| WXSIM Forecast for:
O'Fallon Issued by: OFallonweather.com |
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| Updated: Thursday, 05-Nov-2026 04:00 pm | ||||||||||||||||||||||||||||||||||||||||||||||||
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| Tonight |
Dense overcast. Low 43°. Wind west-northwest around 8 mph, gusting to 28 mph. |
| Friday |
Mostly cloudy to cloudy in the morning, becoming partly to mostly cloudy in the afternoon. High 54°. Wind northwest around 7 mph, gusting to 22 mph. |
| Friday night |
Partly to mostly cloudy. Low 36°. Wind northwest around 3 mph, gusting to 17 mph. |
| Saturday |
Mostly cloudy. High 54°. Wind northwest around 2 mph, gusting to 18 mph. |
| Saturday night |
Partly to mostly cloudy. Low 36°. Wind west-southwest around 3 mph. |
| Sunday |
Partly to mostly cloudy. Mild. High 63°. Wind west-southwest around 5 mph, gusting to 18 mph. |
| Sunday night |
Partly to mostly cloudy. Low 39°. Wind west-southwest around 3 mph. |
| Monday |
Partly to mostly cloudy. Mild. High 67°. Wind southwest around 4 mph, gusting to 18 mph. |
| Monday night |
Partly to mostly cloudy. Low 44°. Wind southwest around 5 mph. |
| Tuesday |
Partly to mostly cloudy. Mild. High 67°. Wind west-southwest around 4 mph, gusting to 20 mph. |
| Tuesday night |
Partly to mostly cloudy. Low 45°. Wind west around 3 mph. |
| Wednesday |
Cloudy in the morning, becoming mostly cloudy to cloudy in the afternoon. Mild. High 63°. Wind northwest near calm in the morning, becoming north-northeast in the afternoon. |
| Wednesday night |
Mostly cloudy in the evening, becoming clear after midnight. Patchy light fog after midnight. Low 42°. Wind north-northeast around 6 mph, gusting to 16 mph. |
WXSIM forecast formatting script by Saratoga-Weather.org.