| WXSIM Forecast for:
O'Fallon Issued by: OFallonweather.com |
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| Updated: Wednesday, 26-Mar-2025 05:00 am | ||||||||||||||||||||||||||||||||||||||||||||||||
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| Today |
Mostly sunny. High 64°. UV index up to 7. Wind northwest around 3 mph, gusting to 25 mph, in the morning, becoming 7 mph, gusting to 26 mph, in the afternoon. |
| Tonight |
Partly to mostly cloudy in the evening, becoming mostly cloudy after midnight. A chance of rain. Low 45°. Wind northwest around 2 mph, gusting to 18 mph, in the evening, becoming east-southeast after midnight. Chance of precipitation 30 percent. Precipitation mostly less than a tenth of an inch. |
| Thursday |
Partly to mostly cloudy in the morning, becoming mostly cloudy in the afternoon. A slight chance of rain in the morning, then a chance of rain in the afternoon. High 65°. UV index up to 5. Wind south-southeast around 8 mph, gusting to 23 mph. Chance of precipitation 40 percent. Precipitation mostly around a tenth of an inch. |
| Thursday night |
Partly to mostly cloudy. A chance of rain. Low 50°. Wind south-southwest around 6 mph, gusting to 15 mph. Chance of precipitation 30 percent. Precipitation mostly less than a tenth of an inch. |
| Friday |
Sunny in the morning, becoming partly cloudy in the afternoon. Breezy and unusually warm. High 79°. UV index up to 6. Wind south-southwest around 9 mph, gusting to 28 mph, in the morning, becoming 15 mph, gusting to 31 mph, in the afternoon. |
| Friday night |
Partly to mostly cloudy in the evening, becoming mostly cloudy after midnight. Mild. Low 60°. Wind south-southwest around 9 mph, gusting to 28 mph. |
| Saturday |
Dense overcast in the morning, becoming cloudy in the afternoon. Rain likely. Scattered thunderstorms likely. Mild. High 68°. Wind south-southeast around 8 mph, gusting to 24 mph. Chance of precipitation 60 percent. Precipitation mostly less than a quarter of an inch. |
| Saturday night |
Mostly cloudy in the evening, becoming mostly cloudy to cloudy after midnight. Patchy light fog after midnight. A slight chance of rain in the evening, then a chance of rain after midnight. Scattered thunderstorms likely. Mild. Low 60°. Wind south-southeast around 8 mph, gusting to 23 mph. Chance of precipitation 40 percent. Precipitation mostly around a tenth of an inch. |
| Sunday |
Mostly cloudy to cloudy in the morning, becoming partly to mostly cloudy in the afternoon. Patchy light fog in the morning. A slight chance of rain in the morning, then a chance of rain in the afternoon. Thunderstorms very likely, some possibly severe. Warm. High 73°. UV index up to 5. Wind southwest around 7 mph, gusting to 23 mph. Chance of precipitation 50 percent. Precipitation mostly around a tenth of an inch. |
| Sunday night |
Mostly cloudy in the evening, becoming cloudy after midnight. Patchy light fog. A chance of rain in the evening, then a slight chance of rain after midnight. Low 47°. Wind west-northwest around 10 mph, gusting to 26 mph. Chance of precipitation 40 percent. Precipitation mostly less than a tenth of an inch. |
| Monday |
Mostly cloudy to cloudy in the morning, becoming cloudy in the afternoon. Patchy light fog in the morning. High 49°. UV index up to 4. Wind west-northwest around 11 mph, gusting to 29 mph. |
| Monday night |
Cloudy in the evening, becoming fair after midnight. Patchy light fog after midnight. A chance of rain. Low 35°. Wind north-northwest around 7 mph, gusting to 25 mph. Chance of precipitation 30 percent. Precipitation mostly less than a tenth of an inch. |
| Tuesday |
Sunny in the morning, becoming mostly cloudy in the afternoon. Patchy light fog in the morning. High 55°. UV index up to 5. Wind north-northeast around 5 mph, gusting to 25 mph, in the morning, becoming east in the afternoon. |
| Tuesday night |
Mostly cloudy to cloudy. Low 43°. Wind east-southeast around 8 mph, gusting to 23 mph. |
WXSIM forecast formatting script by Saratoga-Weather.org.
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