Best year time to visit Alton

General weather information about Alton

Average annual temperature is 15.6 °C

Absolute maximum temperature: 38.9 °C

Absolute minimum temperature: -8 °C

Number of sunny days: 211

Number of rainy days: 152

Number of snow days: 2

Average annual precipitation: 967 mm

Look at detailed online map of Alton

* Weather data for Alton United States is based on climate observations for 2023 year

Alton air temperature forecast for each month

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Absolute maximum temperature (°C) 19.7 21 24.5 27.7 31.6 37.6 38.2 38.9 32.7 30.3 26.1 17.4
Average daytime temperature (°C) 10.2 13.3 15.1 20.7 26.8 31.4 32.9 31.7 28.7 22 15.4 11.4
Average temperature (°C) 5.2 7.1 8.8 14.3 20.1 24.3 26.5 25.7 22 16.2 9.4 6.9
Average night temperature (°C) 1.8 2.7 4.1 8.8 14.3 18.1 21.5 21 16.6 11.8 4.7 3
Absolute minimum temperature (°C) -7.1 -8 -6.6 2.1 6.9 12.3 16.2 14.6 11.5 -3.3 -4 -4.2

Alton monthly weather indicators

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Daylight maximum duration (h) 10.4 11.4 12.6 13.7 14.5 14.7 14.6 14 13 11.8 10.7 9.9
Daylight mean duration (h) 10 10.9 12 13.1 14.1 14.6 14.4 13.5 12.4 11.3 10.2 9.7
Daylight minimum duration (h) 9.7 10.4 11.4 12.6 13.7 14.5 14.1 13 11.9 10.7 9.9 9.7
Sunshine mean duration (h) 6.5 8.2 8 10.4 10.8 12.6 11.3 10.8 10.6 8.3 8.1 6.8
Precipitation (mm) 124 100 249 32 78 48 76 71 37 69 25 58
Sunny days 15 17 14 19 16 16 14 17 22 19 22 20
Rainy days 15 10 17 11 15 14 17 14 8 12 8 11
Snow days 1 1

Alton - weather forecast by months

January February March April May June July August September October November December

Best time to visit Alton:

The best time to visit Alton during the most sunny months:

  • June — 12.6(h)

The largest precipitation sum in Alton is at

  • January — 124(mm)
  • March — 249(mm)

Weather forecast in the closest to Alton admin centers