| WXSIM Forecast for:
O'Fallon Issued by: OFallonweather.com |
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| Updated: Friday, 06-Nov-2026 04:00 pm | ||||||||||||||||||||||||||||||||||||||||||||||||
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| Tonight |
Partly cloudy in the evening, becoming partly to mostly cloudy after midnight. Patchy light fog after midnight. Low 34°. Wind north-northwest around 3 mph, gusting to 25 mph. |
| Saturday |
Mostly cloudy in the morning, becoming partly cloudy in the afternoon. Patchy light fog in the morning. High 54°. Wind northwest around 2 mph, gusting to 19 mph. |
| Saturday night |
Fair in the evening, becoming clear after midnight. Low 33°. Wind south-southwest around 2 mph. |
| Sunday |
Sunny. Mild. High 62°. Wind west-southwest around 5 mph, gusting to 20 mph. |
| Sunday night |
Clear. Low 36°. Wind west around 3 mph. |
| Monday |
Sunny. Mild. High 68°. Wind southwest around 3 mph, gusting to 21 mph. |
| Monday night |
Clear. Low 39°. Wind southwest around 4 mph. |
| Tuesday |
Sunny. Mild. High 69°. Wind west around 4 mph, gusting to 20 mph. |
| Tuesday night |
Fair to partly cloudy. Low 42°. Wind west-northwest near calm. |
| Wednesday |
Partly cloudy. Mild. High 66°. Wind west-northwest around 2 mph, gusting to 21 mph. |
| Wednesday night |
Partly cloudy in the evening, becoming partly to mostly cloudy after midnight. Low 45°. Wind west-northwest around 4 mph. |
| Thursday |
Partly cloudy in the morning, becoming mostly cloudy to cloudy in the afternoon. High 60°. Wind west-northwest around 4 mph, gusting to 25 mph, in the morning, becoming north-northeast around 9 mph, gusting to 29 mph, in the afternoon. |
| Thursday night |
Cloudy in the evening, becoming mostly cloudy after midnight. Low 39°. Wind north-northeast around 10 mph, gusting to 27 mph. |
WXSIM forecast formatting script by Saratoga-Weather.org.
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