| WXSIM Forecast for:
O'Fallon Issued by: OFallonweather.com |
||||||||||||||||||||||||||||||||||||||||||||||||
| Updated: Sunday, 01-Mar-2026 05:00 am | ||||||||||||||||||||||||||||||||||||||||||||||||
|
| Today |
Partly to mostly cloudy in the morning, becoming mostly cloudy in the afternoon. High 49°. Wind northeast around 8 mph, gusting to 26 mph. |
| Tonight |
Cloudy in the evening, becoming dense overcast after midnight. A chance of a mix of rain and sleet in the evening, then a chance of a mix of rain, freezing rain, and snow after midnight. Low 31°. Wind chill ranging from 25 to 42. Wind east-northeast around 7 mph, gusting to 24 mph. Chance of precipitation 60 percent. Precipitation (liquid equivalent) mostly around a quarter of an inch. Little or no snow or ice (on ground) accumulation expected. Little if any freezing rain accumulation. |
| Monday |
Cloudy. High 46°. Wind east around 7 mph, gusting to 20 mph. |
| Monday night |
Cloudy in the evening, becoming dense overcast after midnight. A slight chance of rain in the evening, then a chance of rain after midnight. Low 40°. Wind east-southeast around 5 mph, gusting to 17 mph. Chance of precipitation 40 percent. Precipitation mostly less than a tenth of an inch. |
| Tuesday |
Cloudy. Patchy light fog in the morning. Rain likely in the morning, then a slight chance of rain in the afternoon. Mild. High 60°. Wind southeast around 5 mph, gusting to 17 mph, in the morning, becoming south in the afternoon. Chance of precipitation 60 percent. Precipitation mostly around a quarter of an inch. |
| Tuesday night |
Cloudy. Light to moderate fog after midnight. A slight chance of rain in the evening, then rain likely after midnight. Low 45°. Wind north-northeast around 5 mph in the evening, becoming east-northeast after midnight. Chance of precipitation 70 percent. Precipitation mostly around half an inch. |
| Wednesday |
Dense overcast. Patchy light fog in the morning. Rain likely in the morning, then a chance of rain in the afternoon. Scattered thunderstorms likely. Mild. High 60°. Wind south-southwest around 4 mph. Chance of precipitation 70 percent. Precipitation mostly between a quarter and half an inch. |
| Wednesday night |
Mostly cloudy. Light to moderate fog in the evening, then moderate fog after midnight. A chance of rain. Scattered thundershowers possible. Relatively mild. Low 48°. Wind west-southwest around 4 mph in the evening, becoming south-southwest after midnight. Chance of precipitation 50 percent. Precipitation mostly less than a quarter of an inch. |
| Thursday |
Partly to mostly sunny in the morning, becoming partly cloudy in the afternoon. Light to moderate fog in the morning. Unusually warm. High 71°. UV index up to 5. Wind south-southwest around 4 mph, gusting to 19 mph, in the morning, becoming 8 mph, gusting to 25 mph, in the afternoon. |
| Thursday night |
Mostly cloudy to cloudy in the evening, becoming partly to mostly cloudy after midnight. Patchy light fog in the evening, then light to moderate fog after midnight. A slight chance of rain in the evening, then a chance of rain after midnight. Relatively mild. Low 54°. Wind south-southwest around 6 mph, gusting to 19 mph. Chance of precipitation 40 percent. Precipitation mostly less than a tenth of an inch. |
| Friday |
Partly to mostly cloudy. Light to moderate fog in the morning. A slight chance of rain in the morning. Scattered thundershowers possible. Unusually warm. High 76°. UV index up to 5. Wind south around 8 mph, gusting to 19 mph, in the morning, becoming 12 mph, gusting to 25 mph, in the afternoon. Chance of precipitation 30 percent. Precipitation mostly less than a tenth of an inch. |
| Friday night |
Mostly cloudy in the evening, becoming dense overcast after midnight. Patchy light fog after midnight. A chance of rain in the evening, then rain likely after midnight. Thunderstorms very likely, some possibly severe. Breezy and mild. Low 56°. Wind south around 12 mph, gusting to 24 mph, in the evening, becoming southwest after midnight. Chance of precipitation 80 percent. Precipitation mostly around an inch. |
| Saturday |
Mostly cloudy in the morning, becoming partly to mostly sunny in the afternoon. Patchy light fog in the morning. Mild. High 61°. UV index up to 4. Wind northwest around 9 mph, gusting to 28 mph. |
| Saturday night |
Clear in the evening, becoming mostly clear after midnight. Patchy light fog after midnight. Low 41°. Wind northwest around 2 mph, gusting to 20 mph, in the evening, becoming south-southwest after midnight. |
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