| WXSIM Forecast for:
O'Fallon Issued by: OFallonweather.com |
||||||||||||||||||||||||||||||||||||||||||||||||
| Updated: Saturday, 28-Mar-2026 05:00 am | ||||||||||||||||||||||||||||||||||||||||||||||||
|
| Today |
Sunny. High 60°. UV index up to 7. Wind east-northeast around 5 mph, gusting to 25 mph, in the morning, becoming southeast in the afternoon. |
| Tonight |
Mostly clear in the evening, becoming partly cloudy after midnight. Low 37°. Wind southeast around 6 mph, gusting to 22 mph. |
| Sunday |
Partly cloudy. Warm. High 73°. UV index up to 6. Wind south around 8 mph, gusting to 24 mph, in the morning, becoming 11 mph, gusting to 28 mph, in the afternoon. |
| Sunday night |
Partly cloudy in the evening, becoming clear after midnight. Low 43°. Wind south around 8 mph, gusting to 23 mph. |
| Monday |
Sunny in the morning, becoming mostly sunny in the afternoon. Unusually hot. High 84°. UV index up to 7. Wind south around 11 mph, gusting to 29 mph. |
| Monday night |
Partly cloudy. Breezy. Low 55°. Wind south around 11 mph, gusting to 23 mph. |
| Tuesday |
Partly to mostly cloudy in the morning, becoming mostly cloudy to cloudy in the afternoon. A slight chance of rain in the morning, then rain likely in the afternoon. Scattered thundershowers possible. Breezy and unusually hot. High 82°. UV index up to 5. Wind south around 12 mph, gusting to 29 mph, in the morning, becoming west-southwest in the afternoon. Chance of precipitation 60 percent. Precipitation mostly between a quarter and half an inch. |
| Tuesday night |
Dense overcast in the evening, becoming cloudy after midnight. Patchy light fog in the evening, then light to moderate fog after midnight. Rain likely. Scattered thundershowers possible. Low 48°. Wind north around 9 mph, gusting to 24 mph. Chance of precipitation 70 percent. Precipitation mostly between 1 and 2 inches. |
| Wednesday |
Mostly cloudy to cloudy. Patchy light fog in the morning. A chance of rain in the morning, then a slight chance of rain in the afternoon. High 55°. Wind north-northeast around 8 mph, gusting to 26 mph. Chance of precipitation 30 percent. Precipitation mostly less than a tenth of an inch. |
| Wednesday night |
Dense overcast. A chance of rain in the evening, then rain likely after midnight. Low 42°. Wind northeast around 8 mph, gusting to 24 mph. Chance of precipitation 70 percent. Precipitation mostly around a quarter of an inch. |
| Thursday |
Dense overcast. Patchy light fog. Rain likely. Cold. High 46°. Wind northeast around 7 mph, gusting to 17 mph. Chance of precipitation 80 percent. Precipitation mostly between half an inch and one inch. |
| Thursday night |
Mostly cloudy in the evening, becoming partly to mostly cloudy after midnight. Low 41°. Wind north-northeast around 5 mph, gusting to 17 mph. |
| Friday |
Mostly cloudy to cloudy in the morning, becoming dense overcast in the afternoon. A slight chance of rain in the morning, then a chance of rain in the afternoon. Scattered thundershowers possible. High 58°. Wind east-southeast around 7 mph, gusting to 20 mph. Chance of precipitation 50 percent. Precipitation mostly around a tenth of an inch. |
| Friday night |
Dense overcast in the evening, becoming mostly cloudy after midnight. Patchy light fog. Rain likely. Scattered thundershowers possible. Low 49°. Wind southeast around 6 mph, gusting to 19 mph, in the evening, becoming northwest around 14 mph, gusting to 27 mph, after midnight. Chance of precipitation 80 percent. Precipitation mostly between half an inch and one inch. |
WXSIM forecast formatting script by Saratoga-Weather.org.
Powered by Davis Vantage Pro2
and
CumulusMX
v 4.6.4 (b4128)
MXUI Template v 2.2.6 by
Silver Acorn
Valid HTML5