Grantham (Lincolnshire) weather
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Forecast days
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Today. Maximum daytime temperature: 20 degrees Celsius; Minimum nighttime temperature: 9 degrees Celsius. Sunny. Sunrise: ; Sunset: . UV: High; Pollution: Low; Pollen: Low.Today. Maximum daytime temperature: 20 degrees Celsius; Minimum nighttime temperature: 9 degrees Celsius. Sunny. Sunrise: ; Sunset: . UV: High; Pollution: Low; Pollen: Low.
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Sunday 19 May. Maximum daytime temperature: 20 degrees Celsius; Minimum nighttime temperature: 9 degrees Celsius. Sunny. Sunrise: ; Sunset: . UV: High; Pollution: Low; Pollen: Low.Sunday 19 May. Maximum daytime temperature: 20 degrees Celsius; Minimum nighttime temperature: 9 degrees Celsius. Sunny. Sunrise: ; Sunset: . UV: High; Pollution: Low; Pollen: Low.
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Monday 20 May. Maximum daytime temperature: 18 degrees Celsius; Minimum nighttime temperature: 8 degrees Celsius. Overcast changing to sunny intervals by lunchtime. Sunrise: ; Sunset: . UV: High; Pollution: Low; Pollen: Low.Monday 20 May. Maximum daytime temperature: 18 degrees Celsius; Minimum nighttime temperature: 8 degrees Celsius. Overcast changing to sunny intervals by lunchtime. Sunrise: ; Sunset: . UV: High; Pollution: Low; Pollen: Low.
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Tuesday 21 May. Maximum daytime temperature: 19 degrees Celsius; Minimum nighttime temperature: 11 degrees Celsius. Cloudy changing to sunny intervals in the afternoon. Sunrise: ; Sunset: . UV: High; Pollution: Low; Pollen: Low.Tuesday 21 May. Maximum daytime temperature: 19 degrees Celsius; Minimum nighttime temperature: 11 degrees Celsius. Cloudy changing to sunny intervals in the afternoon. Sunrise: ; Sunset: . UV: High; Pollution: Low; Pollen: Low.
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Wednesday 22 May. Maximum daytime temperature: 18 degrees Celsius; Minimum nighttime temperature: 11 degrees Celsius. Cloudy. Sunrise: ; Sunset: . UV: Moderate; Pollution: Low; Pollen: Low.Wednesday 22 May. Maximum daytime temperature: 18 degrees Celsius; Minimum nighttime temperature: 11 degrees Celsius. Cloudy. Sunrise: ; Sunset: . UV: Moderate; Pollution: Low; Pollen: Low.
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Thursday 23 May. Maximum daytime temperature: 17 degrees Celsius; Minimum nighttime temperature: 9 degrees Celsius. Cloudy changing to light showers in the afternoon. Sunrise: ; Sunset: . UV: Moderate;Thursday 23 May. Maximum daytime temperature: 17 degrees Celsius; Minimum nighttime temperature: 9 degrees Celsius. Cloudy changing to light showers in the afternoon. Sunrise: ; Sunset: . UV: Moderate;
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Friday 24 May. Maximum daytime temperature: 17 degrees Celsius; Minimum nighttime temperature: 8 degrees Celsius. Overcast changing to sunny intervals by early evening. Sunrise: ; Sunset: . UV: Moderate;Friday 24 May. Maximum daytime temperature: 17 degrees Celsius; Minimum nighttime temperature: 8 degrees Celsius. Overcast changing to sunny intervals by early evening. Sunrise: ; Sunset: . UV: Moderate;
Seven day forecast for Grantham
| Time | 15:00 | 16:00 | 17:00 | 18:00 | 19:00 | 20:00 | 21:00 | 22:00 | 23:00 |
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| Weather symbols |
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Chance of precipitation
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<5% | <5% | <5% | <5% | <5% | <5% | <5% | <5% | <5% |
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19°
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19°
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19°
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19°
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18°
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16°
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14°
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12°
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11°
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17° | 18° | 18° | 17° | 16° | 14° | 13° | 11° | 10° |
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NNE
8
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NE
8
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NE
8
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NE
10
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NE
10
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NE
8
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NNE
6
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NNE
6
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N
7
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12 | 11 | 13 | 15 | 16 | 15 | 15 | 14 | 15 |
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M | G | VG | VG | VG | VG | VG | VG | VG |
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Humidity
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68% | 63% | 61% | 59% | 62% | 68% | 75% | 80% | 83% |
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UV
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4 | 4 | 3 | 2 | 1 | 1 | - | - | - |
| Time | 00:00 | 01:00 | 02:00 | 03:00 | 04:00 | 05:00 | 06:00 | 07:00 | 08:00 | 09:00 | 10:00 | 11:00 | 12:00 | 13:00 | 14:00 | 15:00 | 16:00 | 17:00 | 18:00 | 19:00 | 20:00 | 21:00 | 22:00 | 23:00 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Weather symbols |
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Chance of precipitation
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<5% | <5% | <5% | <5% | <5% | <5% | <5% | <5% | <5% | <5% | <5% | <5% | <5% | <5% | <5% | <5% | <5% | <5% | <5% | <5% | <5% | <5% | <5% | <5% |
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11°
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10°
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10°
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10°
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9°
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9°
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10°
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10°
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12°
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14°
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16°
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17°
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19°
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20°
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20°
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20°
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20°
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19°
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18°
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17°
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15°
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13°
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11°
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10°
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9° | 9° | 8° | 8° | 8° | 7° | 8° | 9° | 10° | 12° | 14° | 16° | 17° | 18° | 18° | 18° | 18° | 17° | 16° | 15° | 13° | 12° | 10° | 9° |
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N
7
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N
8
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N
7
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N
7
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N
7
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N
7
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N
8
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N
8
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N
9
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N
9
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NNE
9
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NNE
9
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NNE
9
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NNE
9
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NE
10
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NE
10
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NE
10
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NE
10
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NE
10
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NE
10
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NE
8
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NE
7
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NE
7
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NNE
7
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17 | 17 | 15 | 15 | 15 | 15 | 16 | 14 | 14 | 14 | 15 | 15 | 15 | 16 | 16 | 16 | 17 | 17 | 17 | 16 | 15 | 13 | 12 | 11 |
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G | G | G | G | G | G | G | G | G | G | G | VG | VG | VG | VG | VG | VG | VG | VG | VG | VG | G | G | G |
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Humidity
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88% | 90% | 90% | 91% | 90% | 90% | 88% | 87% | 82% | 78% | 73% | 66% | 60% | 54% | 52% | 51% | 50% | 53% | 57% | 60% | 68% | 77% | 84% | 88% |
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UV
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- | - | - | - | - | - | 1 | 1 | 3 | 4 | 5 | 6 | 6 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 1 | - | - | - |
| Time | 00:00 | 01:00 | 04:00 | 07:00 | 10:00 | 13:00 | 16:00 | 19:00 | 22:00 |
|---|---|---|---|---|---|---|---|---|---|
| Weather symbols |
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Chance of precipitation
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10% | 10% | 10% | 10% | 10% | <5% | <5% | <5% | <5% |
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10°
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9°
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9°
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10°
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13°
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17°
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18°
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15°
|
10°
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8° | 8° | 7° | 8° | 12° | 15° | 16° | 13° | 9° |
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NNE
7
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NNE
7
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NNE
8
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NNE
9
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NNE
9
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NE
9
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NE
10
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NE
10
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NE
6
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11 | 11 | 14 | 15 | 16 | 17 | 19 | 18 | 10 |
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G | G | G | G | VG | VG | VG | VG | VG |
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Humidity
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91% | 92% | 90% | 88% | 75% | 61% | 57% | 60% | 78% |
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UV
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- | - | - | 1 | 4 | 6 | 4 | 1 | - |
| Time | 01:00 | 04:00 | 07:00 | 10:00 | 13:00 | 16:00 | 19:00 | 22:00 |
|---|---|---|---|---|---|---|---|---|
| Weather symbols |
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Chance of precipitation
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<5% | 10% | 10% | 10% | 10% | 10% | 10% | 10% |
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8°
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8°
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9°
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13°
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18°
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19°
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18°
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14°
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7° | 6° | 7° | 12° | 17° | 18° | 17° | 13° |
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NNE
6
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N
6
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N
8
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N
7
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N
6
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N
6
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NNE
5
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NE
5
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10 | 10 | 14 | 15 | 14 | 14 | 10 | 9 |
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VG | G | VG | VG | VG | G | VG | VG |
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Humidity
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92% | 95% | 89% | 77% | 64% | 63% | 69% | 89% |
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UV
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- | - | 1 | 4 | 6 | 4 | 1 | - |
| Time | 01:00 | 04:00 | 07:00 | 10:00 | 13:00 | 16:00 | 19:00 | 22:00 |
|---|---|---|---|---|---|---|---|---|
| Weather symbols |
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Chance of precipitation
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10% | 10% | 10% | 10% | 20% | 20% | 20% | 10% |
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12°
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12°
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13°
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15°
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17°
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17°
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16°
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14°
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11° | 11° | 11° | 13° | 15° | 15° | 14° | 12° |
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NNE
5
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NNW
6
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NW
8
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NW
10
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NW
11
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NW
10
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NW
11
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WNW
10
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8 | 11 | 15 | 19 | 21 | 20 | 19 | 18 |
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G | G | G | G | G | G | G | G |
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Humidity
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95% | 95% | 92% | 83% | 76% | 75% | 77% | 83% |
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UV
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- | - | 1 | 3 | 4 | 2 | 1 | - |
| Time | 01:00 | 04:00 | 07:00 | 10:00 | 13:00 | 16:00 | 19:00 | 22:00 |
|---|---|---|---|---|---|---|---|---|
| Weather symbols |
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Chance of precipitation
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10% | 10% | 10% | 10% | 10% | 30% | 10% | 10% |
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13°
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12°
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12°
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14°
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16°
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16°
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15°
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12°
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11° | 10° | 10° | 12° | 13° | 14° | 13° | 10° |
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WNW
11
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W
12
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WNW
13
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WNW
14
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WNW
14
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WNW
13
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NNW
11
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NW
9
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20 | 21 | 23 | 25 | 26 | 24 | 20 | 15 |
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G | G | VG | VG | VG | VG | VG | VG |
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Humidity
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87% | 88% | 85% | 75% | 67% | 66% | 69% | 78% |
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UV
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- | - | 1 | 3 | 5 | 3 | 1 | - |
| Time | 01:00 | 04:00 | 07:00 | 10:00 | 13:00 | 16:00 | 19:00 | 22:00 |
|---|---|---|---|---|---|---|---|---|
| Weather symbols |
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Chance of precipitation
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10% | 10% | 10% | 10% | 10% | 10% | 10% | 10% |
|
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11°
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10°
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11°
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13°
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16°
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16°
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15°
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12°
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9° | 9° | 10° | 12° | 14° | 14° | 14° | 11° |
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NNW
7
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NNW
7
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NNW
7
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NNW
8
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NNW
9
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NNW
9
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W
8
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W
7
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12 | 13 | 13 | 16 | 18 | 17 | 15 | 12 |
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VG | VG | VG | VG | VG | VG | VG | VG |
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Humidity
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83% | 85% | 85% | 74% | 64% | 63% | 65% | 77% |
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UV
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- | - | 2 | 3 | 4 | 3 | 1 | - |
Our weather symbols tell you the weather conditions for any given hour in the day or night. This means that the symbol for 9am shows you what you will see from 9am to 10am.
Chance of precipitation represents how likely it is that rain (or other types of precipitation, such as sleet, snow, hail or drizzle) will fall from the sky at a certain time.
This number shows the air temperature for the time period. You can see the temperature in Celsius or Fahrenheit by using the dropdown menu.
Feels like temperature considers other factors, such as wind speed and humidity. This gives you a better idea of how the temperature will actually feel at the time.
Wind gust shows the highest wind speed that you should encounter at that time, as winds peak and lull.
Strong winds are shown in bold for speeds of 29 mph or more.
The arrow shows the direction the wind is blowing. The letters show the direction the wind is blowing from (on a standard 16-point compass).
The number represents the average wind speed expected at that time.
The arrow shows the direction of the wind (up is north). If the arrow points from land to sea, the wind will be blowing out to sea (‘offshore’). The number is the average wind speed.
Beware of offshore winds if you are using inflatables, paddle boards or kayaks. These winds can blow you out to sea. Read more about how wind will affect you at the beach.
Visibility measures the distance at which an object can be clearly seen.
| VP (Very Poor) | Less than 1 km |
| P (Poor) | 1.1 km to 4 km |
| M (Moderate) | 4.1 km to 10 km |
| G (Good) | 10.1 km to 20 km |
| VG (Very Good) | 20.1 km to 40 km |
| E (Excellent) | Greater than 40 km |
Humidity is the amount of water vapor in the air. If there is a lot of water vapour, the humidity will be high. The higher the percentage of humidity, the wetter it will feel outside.
UV exposure index and the protection required to help keep you safe:
No risk of UV - It’s safe to stay outside. Low - You can safely stay outside. Consider sunscreen in direct sunlight. Moderate - Take care during midday hours and do not spend too much time in the sun unprotected. Sunscreen advised. High - Seek shade during midday hours, cover up and wear sunscreen. Very high - Spend time in the shade between 11am and 3pm. Shirt, sunscreen and hat are essential. Extreme - Avoid being outside during midday hours. Shirt, sunscreen and hat essential.
This is the average height of the waves, 1-2 miles out to sea. The height of the waves can vary. The individual waves out to sea or at the beach can be higher than this number. If you are close to the water, keep an eye on the waves to stop you or your belongings being swept away.
Read more about calculating the expected height of the waves at the beach.
This is the average number of seconds between one wave and the next, 1-2 miles out to sea. A long wave period (more than 10 seconds) means the waves at the beach may be more powerful. Lifeguards can give you advice on waves if you’re planning to go into the water.
Read more about the period of waves.
The arrow shows the average direction of the waves 1-2 miles out to sea. It indicates how sheltered the beach will be from these waves. If the arrow points towards land, most of the waves’ power will reach the beach. If the arrow is parallel to or pointing away from land, the wave height is likely to be lower on the beach than it is offshore.
Lifeguards can give you advice on waves if you’re planning to go into the water.
Forecast row information
UK video forecast
East Midlands weather forecast
Headline:
Early fog clearing. Sunshine and showers for many later.
Today:
A murky start, with fog, low cloud and perhaps the odd shower. Gradually brightening up to a mainly fine day with increasing sunny periods, perhaps sparking a few further sharp showers in places before becoming dry later. Cooler near coasts. Maximum temperature 23 °C.
Tonight:
Mainly fine during the evening, however fog and low cloud should move in from the east to affect many areas overnight. Becoming chilly in inland sheltered areas that remain clearer. Minimum temperature 6 °C.
Sunday:
Areas of fog and low cloud probably proving slower to retreat coastwards than on Saturday, but warm sunny periods still developing inland. Cooler near coasts, with an onshore breeze. Maximum temperature 23 °C.
Outlook for Monday to Wednesday:
Mainly fine on Monday after early cloud and fog clear but otherwise becoming more showery Tuesday, and perhaps more extensively wet and windy through Wednesday.
Updated:
UK long range weather forecast
Most likely an unsettled start to the period with western showers and eastern rain, potentially heavy in the northeast, before a transient settled spell late in the week. Early in the bank holiday weekend a band of rain, heavy at times moves in from the west, becoming weaker as it moves east becoming more showery in nature with scattered showers also following. Into the new week increasingly settled conditions more likely for most, though rain may threaten north-western areas early on whilst some southern or eastern areas occasionally less settled with showers more likely later in the period though there will be some sunshine between times, the best of this in south-western parts. Temperatures are likely to be a little above average, but some large spatial differences are likely.
Updated:
There is nothing to suggest that conditions will be massively different to climatology at the end of the current month and though the first half of June. That said, both temperatures and rainfall are more-likely to be a little above average overall, with further rain or showers (possibly heavy/thundery at times) but also some spells of warm sunshine.
Updated:
