| WXSIM Forecast for:
O'Fallon Issued by: OFallonweather.com |
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| Updated: Friday, 06-Nov-2026 05:00 am | ||||||||||||||||||||||||||||||||||||||||||||||||
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| Today |
Partly to mostly cloudy in the morning, becoming sunny in the afternoon. High 60°. Wind north around 6 mph, gusting to 31 mph. |
| Tonight |
Clear. Low 36°. Wind north around 3 mph, gusting to 20 mph. |
| Saturday |
Sunny in the morning, becoming partly cloudy in the afternoon. High 60°. Wind west-northwest around 1 mph, gusting to 21 mph. |
| Saturday night |
Clear. Low 35°. Wind south-southwest around 2 mph. |
| Sunday |
Sunny. Mild. High 67°. Wind southwest around 5 mph, gusting to 23 mph, in the morning, becoming west in the afternoon. |
| Sunday night |
Clear. Low 36°. Wind west around 3 mph. |
| Monday |
Sunny. Mild. High 69°. Wind southwest around 2 mph in the morning, becoming 5 mph, gusting to 22 mph, in the afternoon. |
| Monday night |
Clear. Low 40°. Wind southwest around 4 mph. |
| Tuesday |
Sunny. Mild. High 69°. Wind west around 4 mph, gusting to 21 mph. |
| Tuesday night |
Fair in the evening, becoming partly cloudy after midnight. Low 40°. Wind northwest around 2 mph. |
| Wednesday |
Partly to mostly sunny in the morning, becoming sunny in the afternoon. Mild. High 66°. Wind north-northwest around 2 mph, gusting to 19 mph. |
| Wednesday night |
Fair in the evening, becoming partly cloudy after midnight. Low 39°. Wind north-northwest around 5 mph, gusting to 16 mph. |
| Thursday |
Partly to mostly cloudy in the morning, becoming cloudy in the afternoon. High 52°. Wind north-northeast around 7 mph, gusting to 24 mph. |
| Thursday night |
Partly cloudy. Low 37°. Wind north-northeast around 4 mph, gusting to 21 mph. |
WXSIM forecast formatting script by Saratoga-Weather.org.