| WXSIM Forecast for:
O'Fallon Issued by: OFallonweather.com |
||||||||||||||||||||||||||||||||||||||||||||||||
| Updated: Thursday, 26-Jun-2025 04:00 pm | ||||||||||||||||||||||||||||||||||||||||||||||||
|
| Tonight |
Fair to partly cloudy in the evening, becoming fair after midnight. Patchy light fog after midnight. Low 74°. Wind southwest around 5 mph, gusting to 24 mph. |
| Friday |
Partly 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. Scattered thunderstorms likely. Hot. High 94°. Heat index up to 101°. UV index up to 8. Wind southwest around 8 mph, gusting to 28 mph. Chance of precipitation 40 percent. Precipitation mostly less than a tenth of an inch. |
| Friday night |
Fair to partly cloudy. Patchy light fog after midnight. A chance of rain. Scattered thundershowers possible. Low 74°. Wind southwest around 4 mph, gusting to 23 mph. Chance of precipitation 30 percent. Precipitation mostly less than a tenth of an inch. |
| Saturday |
Partly to mostly sunny in the morning, becoming partly cloudy in the afternoon. A slight chance of rain in the morning, then a chance of rain in the afternoon. Scattered thunderstorms likely. Hot. High 95°. Heat index up to 104°. UV index up to 9. Wind west-southwest around 3 mph, gusting to 22 mph. Chance of precipitation 50 percent. Precipitation mostly around a tenth of an inch. |
| Saturday night |
Partly to mostly cloudy in the evening, becoming partly cloudy after midnight. Moderate fog. A chance of rain in the evening, then a slight chance of rain after midnight. Scattered thunderstorms likely. Low 75°. Wind south around 4 mph. Chance of precipitation 50 percent. Precipitation mostly around a tenth of an inch. |
| Sunday |
Partly to mostly cloudy in the morning, becoming partly cloudy in the afternoon. Patchy light fog in the morning. A chance of rain. Scattered thunderstorms likely. Hot. High 91°. Heat index up to 101°. UV index up to 8. Wind southwest around 5 mph, gusting to 24 mph. Chance of precipitation 50 percent. Precipitation mostly less than a tenth of an inch. |
| Sunday night |
Fair to partly cloudy in the evening, becoming partly to mostly cloudy after midnight. Moderate fog. A chance of rain in the evening, then rain likely after midnight. Scattered thunderstorms likely. Low 75°. Wind southwest around 4 mph, gusting to 17 mph. Chance of precipitation 80 percent. Precipitation mostly between a quarter and half an inch. |
| Monday |
Partly cloudy. Moderate fog in the morning, then patchy light fog in the afternoon. A chance of rain in the morning, then a slight chance of rain in the afternoon. Scattered thunderstorms likely. High 88°. Heat index up to 97°. UV index up to 10. Wind west around 4 mph, gusting to 21 mph. Chance of precipitation 60 percent. Precipitation mostly around a tenth of an inch. |
| Monday night |
Partly cloudy. Patchy light fog in the evening, then moderate fog after midnight. A chance of rain in the evening, then a slight chance of rain after midnight. Scattered thundershowers possible. Low 74°. Wind northwest around 3 mph, gusting to 19 mph. Chance of precipitation 40 percent. Precipitation mostly less than a tenth of an inch. |
| Tuesday |
Partly to mostly cloudy in the morning, becoming sunny in the afternoon. Patchy light fog in the morning. Hot. High 90°. Heat index up to 97°. UV index up to 10. Wind north-northwest around 4 mph, gusting to 22 mph. |
| Tuesday night |
Fair. Patchy light fog after midnight. Low 70°. Wind north around 3 mph, gusting to 18 mph. |
| Wednesday |
Partly to mostly sunny in the morning, becoming sunny in the afternoon. Patchy light fog in the morning. High 89°. Heat index up to 94°. UV index up to 10. Wind north-northwest around 3 mph, gusting to 22 mph. |
| Wednesday night |
Clear in the evening, becoming fair after midnight. Patchy light fog after midnight. Low 68°. Wind northeast around 4 mph, gusting to 20 mph, in the evening, becoming east-southeast after midnight. |
WXSIM forecast formatting script by Saratoga-Weather.org.
Powered by Davis Vantage Pro2
and
CumulusMX
v 4.4.5 (b4088)
MXUI Template v 2.2.6 by
Silver Acorn
Valid HTML5