| WXSIM Forecast for:
O'Fallon Issued by: OFallonweather.com |
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| Updated: Saturday, 14-Nov-2026 04:00 pm | ||||||||||||||||||||||||||||||||||||||||||||||||
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| Tonight |
Partly cloudy. Low 24°. Wind northeast near calm. |
| Sunday |
Partly to mostly cloudy in the morning, becoming partly cloudy in the afternoon. High 50°. Wind east around 1 mph, gusting to 25 mph. |
| Sunday night |
Partly cloudy. Low 27°. Wind east-northeast near calm in the evening, becoming south after midnight. |
| Monday |
Partly cloudy. High 53°. Wind south-southeast around 1 mph, gusting to 17 mph. |
| Monday night |
Partly cloudy. Low 30°. Wind southeast around 3 mph in the evening, becoming south after midnight. |
| Tuesday |
Partly cloudy. High 57°. Wind south around 4 mph, gusting to 21 mph. |
| Tuesday night |
Partly cloudy. Low 33°. Wind south around 5 mph. |
| Wednesday |
Partly cloudy in the morning, becoming partly to mostly cloudy in the afternoon. Mild. High 62°. Wind south around 7 mph, gusting to 23 mph. |
| Wednesday night |
Partly cloudy in the evening, becoming mostly cloudy after midnight. Low 42°. Wind south around 7 mph, gusting to 16 mph. |
| Thursday |
Partly cloudy. Mild. High 67°. Wind south-southwest around 6 mph, gusting to 21 mph. |
| Thursday night |
Mostly cloudy in the evening, becoming dense overcast after midnight. Relatively mild. Low 47°. Wind southwest around 3 mph. |
| Friday |
Mostly cloudy in the morning, becoming partly cloudy in the afternoon. Mild. High 68°. Wind south around 5 mph, gusting to 21 mph. |
| Friday night |
Mostly cloudy in the evening, becoming mostly cloudy to cloudy after midnight. Low 47°. Wind south around 7 mph. |
WXSIM forecast formatting script by Saratoga-Weather.org.
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