O’Fallon 48 Hour Forecast

Clear
Wednesday
09/20 20%
Clear
Mostly clear. Lows overnight in the low 70s.
High 98° / Low 70°
Clear
Wednesday Night
09/20 20%
Clear
Clear to partly cloudy. A stray shower or thunderstorm is possible. Low around 70F. Winds light and variable.
High 98° / Low 70°
Partly Cloudy
Thursday
09/21 10%
Partly Cloudy
Partly cloudy skies. High 94F. Winds S at 5 to 10 mph.
High 94° / Low 69°
Partly Cloudy
Thursday Night
09/21 10%
Partly Cloudy
Some clouds early will give way to generally clear conditions overnight. Low 69F. Winds light and variable.
High 94° / Low 69°
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Current O’Fallon Weather

Clear
Currently
86°
Clear
Tomorrow is forecast to be Cooler than today.
Clear
Wednesday 09/20 20%
High 98° / Low 70°
Clear
Mostly clear. Lows overnight in the low 70s.

O’Fallon Extended Forecast

Clear
Wednesday
Clear
High 98°/Low 70°
20%
Partly Cloudy
Thursday
Partly Cloudy
High 94°/Low 69°
10%
Clear
Friday
Clear
High 93°/Low 67°
10%
Clear
Saturday
Clear
High 92°/Low 65°
10%
Clear
Sunday
Clear
High 91°/Low 65°
10%
Partly Cloudy
Monday
Partly Cloudy
High 90°/Low 65°
20%
Clear
Tuesday
Clear
High 86°/Low 61°
10%
Chance of Rain
Wednesday
Chance of Rain
High 76°/Low 55°
40%
Partly Cloudy
Thursday
Partly Cloudy
High 73°/Low 52°
10%
Clear
Friday
Clear
High 72°/Low 50°
10%