ClimateForecastMayJune >>

10-Day Weather Forecast, O'Fallon (IL)

Mon   May 20
30°C | 19°C
S 22 km/h
partly cloudy and no rain

partly cloudy and no rain

Tue   May 21
32°C | 20°C
S 29 km/h
10 mm
almost clear and no rain

almost clear and no rain

Wed   May 22
25°C | 18°C
W 14 km/h
1.5 mm
broken clouds and thunder

broken clouds and thunder

Thu   May 23
26°C | 17°C
SE 11 km/h
3.1 mm
broken clouds and  chance of slight rain

broken clouds and chance of slight rain

Fri   May 24
27°C | 19°C
S 18 km/h
13 mm
broken clouds and thunder

broken clouds and thunder

Sat   May 25
30°C | 20°C
S 18 km/h
10 mm
broken clouds and  chance of rain

broken clouds and chance of rain

Sun   May 26
26°C | 20°C
SE 11 km/h
24 mm
broken clouds and thunder

broken clouds and thunder

Mon   May 27
28°C | 18°C
NW 18 km/h
0.5 mm
partly cloudy and  chance of slight rain

partly cloudy and chance of slight rain

Tue   May 28
24°C | 17°C
NW 25 km/h
partly cloudy and no rain

partly cloudy and no rain

Wed   May 29
26°C | 16°C
NW 22 km/h
almost clear and no rain

almost clear and no rain

See the 10-day forecast for popular European destinations

Europe Forecast

Weather for today Tuesday 21 May

For Tuesday the predicted weather in O'Fallon is almost clear with no rain reaching up to 10 mm. The maximum temperature is a very warm 32°C, while the minimum temperature is a pleasant 20°C.

Weather for tomorrow Wednesday 22 May

For Wednesday the forecast for O'Fallon is broken clouds with thunder reaching up to 1.5 mm. The maximum predicted temperature is a warm 25°C, while the minimum temperature is a pleasant 18°C.

Get more details in the extended 10 day forecast. Check out our May climate page to see if the current temperatures in O'Fallon is typical for this time of year.