| WXSIM Forecast for:
O'Fallon Issued by: OFallonweather.com |
||||||||||||||||||||||||||||||||||||||||||||||||
| Updated: Thursday, 30-Apr-2026 05:00 am | ||||||||||||||||||||||||||||||||||||||||||||||||
|
| Today |
Sunny in the morning, becoming partly to mostly cloudy in the afternoon. High 67°. UV index up to 6. Wind south-southwest around 4 mph, gusting to 22 mph. |
| Tonight |
Cloudy in the evening, becoming partly cloudy after midnight. A chance of rain. Cool. Low 43°. Wind west around 6 mph, gusting to 21 mph, in the evening, becoming north-northwest after midnight. 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. High 63°. UV index up to 7. Wind north-northwest around 5 mph, gusting to 24 mph. |
| Friday night |
Fair to partly cloudy in the evening, becoming mostly cloudy after midnight. Cool. Low 43°. Wind north around 2 mph, gusting to 20 mph. |
| Saturday |
Partly to mostly cloudy in the morning, becoming partly cloudy in the afternoon. A slight chance of rain. Cool. High 59°. UV index up to 6. Wind north around 5 mph, gusting to 25 mph, in the morning, becoming 9 mph, gusting to 26 mph, in the afternoon. Chance of precipitation 20 percent. Precipitation mostly less than a tenth of an inch. |
| Saturday night |
Clear. Unusually cold. Low 41°. Wind north-northwest around 4 mph, gusting to 24 mph, in the evening, becoming southwest after midnight. |
| Sunday |
Sunny in the morning, becoming partly cloudy in the afternoon. High 68°. UV index up to 6. Wind southwest around 8 mph, gusting to 27 mph, in the morning, becoming 11 mph, gusting to 27 mph, in the afternoon. |
| Sunday night |
Fair in the evening, becoming partly cloudy after midnight. Cool. Low 48°. Wind southwest around 8 mph, gusting to 23 mph. |
| Monday |
Partly cloudy in the morning, becoming partly to mostly cloudy in the afternoon. A slight chance of rain in the morning, then a chance of rain in the afternoon. Scattered thundershowers possible. Breezy. High 73°. UV index up to 5. Wind southwest around 10 mph, gusting to 28 mph, in the morning, becoming 14 mph, gusting to 29 mph, in the afternoon. Chance of precipitation 40 percent. Precipitation mostly around a tenth of an inch. |
| Monday night |
Partly to mostly cloudy in the evening, becoming mostly cloudy after midnight. Light to moderate fog after midnight. A chance of rain. Scattered thundershowers possible. Low 57°. Wind southwest around 10 mph, gusting to 25 mph. Chance of precipitation 50 percent. Precipitation mostly around a tenth of an inch. |
| Tuesday |
Cloudy. Light to moderate fog in the morning. A chance of rain. Scattered thundershowers possible. High 64°. Wind north-northeast around 6 mph, gusting to 22 mph. Chance of precipitation 50 percent. Precipitation mostly less than a quarter of an inch. |
| Tuesday night |
Cloudy in the evening, becoming mostly cloudy to cloudy after midnight. A chance of rain in the evening, then a slight chance of rain after midnight. Cool. Low 49°. Wind north-northeast around 10 mph, gusting to 29 mph. Chance of precipitation 50 percent. Precipitation mostly less than a quarter of an inch. |
| Wednesday |
Cloudy in the morning, becoming mostly cloudy to cloudy in the afternoon. High 62°. UV index up to 5. Wind northwest around 7 mph, gusting to 24 mph. |
| Wednesday night |
Partly cloudy in the evening, becoming fair after midnight. Cool. Low 47°. Wind west-southwest around 6 mph, gusting to 21 mph. |
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