Definitions of codes
Weather types Value Description NA Not available -1 Trace rain 0 Clear night 1 Sunny day 2 Partly cloudy (night) 3 Partly cloudy (day) 4 Not used 5 Mist 6 Fog 7 Cloudy 8 Overcast 9 Light rain shower (night) 10 Light rain shower (day) 11 Drizzle 12 Light rain 13 Heavy rain shower (night) 14 Heavy