WXSIM Forecast for: O'Fallon
Issued by: OFallonweather.com
Updated: Sunday, 21-Jul-2024 05:00 am
 
Today

Partly Cloudy
Partly Cloudy
Tonight

Fog
Fog
Monday

Fog a.m.
Fog a.m.
Monday
night
Fog late
Fog late
Tuesday

Thunder storm
Thunder storm
Tuesday
night
Fog late
Fog late
Wednesday

Fog a.m.
Fog a.m.
Wednesday
night
Thunder storm
Thunder storm
<.1 in. <.1 in.
High: 83° Low: 65° High: 84° Low: 68° High: 85° Low: 72° High: 88° Low: 72°
            Heat: 95°  
NE
4-23
mph
E→NE
1-15
mph
N
2-20
mph
ENE→SSE
2
mph
SE
3-20
mph
SE→SSW
5-17
mph
SW→W
5-23
mph
SSE→NNW
3-15
mph
UV: 8
 Very High 
UV: 8
 Very High 
UV: 7
 High 
UV: 8
 Very High 

 

Today
 
Mostly sunny in the morning, becoming partly cloudy in the afternoon. High 83°. UV index up to 8. Wind northeast around 4 mph, gusting to 23 mph.
Tonight
 
Fair to partly cloudy in the evening, becoming fair after midnight. Patchy light fog. Relatively cool. Low 65°. Wind east around 1 mph, gusting to 15 mph, in the evening, becoming northeast after midnight.
Monday
 
Mostly sunny in the morning, becoming partly cloudy in the afternoon. Patchy light fog in the morning. High 84°. UV index up to 8. Wind north around 2 mph, gusting to 20 mph.
Monday night
 
Fair in the evening, becoming mostly clear after midnight. Patchy light fog in the evening, then light to moderate fog after midnight. Low 68°. Wind east-northeast around 2 mph in the evening, becoming south-southeast after midnight.
Tuesday
 
Mostly sunny in the morning, becoming partly to mostly cloudy in the afternoon. Light to moderate fog in the morning. A slight chance of rain. Scattered thunderstorms likely, some possibly severe. High 85°. UV index up to 7. Wind southeast around 3 mph, gusting to 20 mph. Chance of precipitation 20 percent. Precipitation mostly less than a tenth of an inch.
Tuesday night
 
Fair in the evening, becoming partly cloudy after midnight. Light to moderate fog in the evening, then moderate fog after midnight. Low 72°. Wind southeast around 5 mph, gusting to 17 mph, in the evening, becoming south-southwest after midnight.
Wednesday
 
Partly cloudy in the morning, becoming mostly sunny in the afternoon. Light to moderate fog in the morning. High 88°. Heat index up to 95°. UV index up to 8. Wind southwest around 5 mph, gusting to 23 mph, in the morning, becoming west in the afternoon.
Wednesday night
 
Fair to partly cloudy in the evening, becoming partly cloudy after midnight. Light to moderate fog in the evening, then moderate fog after midnight. A slight chance of rain. Scattered thundershowers possible. Low 72°. Wind south-southeast around 3 mph, gusting to 15 mph, in the evening, becoming north-northwest after midnight. Chance of precipitation 20 percent. Precipitation mostly less than a tenth of an inch.
Thursday
 
Mostly sunny in the morning, becoming sunny in the afternoon. Moderate fog in the morning. High 86°. Heat index up to 92°. UV index up to 8. Wind north-northwest around 6 mph, gusting to 24 mph.
Thursday night
 
Clear in the evening, becoming fair after midnight. Moderate fog after midnight. Low 70°. Wind northeast around 4 mph, gusting to 20 mph, in the evening, becoming east-southeast after midnight.
Friday
 
Mostly cloudy in the morning, becoming mostly cloudy to cloudy in the afternoon. Moderate fog in the morning. High 83°. Wind east around 4 mph, gusting to 16 mph.
Friday night
 
Partly to mostly cloudy. Patchy light fog in the evening, then light to moderate fog after midnight. Low 72°. Wind east around 5 mph, gusting to 16 mph, in the evening, becoming south-southeast after midnight.
Saturday
 
Mostly cloudy in the morning, becoming mostly cloudy to cloudy in the afternoon. Patchy light fog in the morning. High 88°. Heat index up to 95°. UV index up to 6. Wind south-southwest around 5 mph, gusting to 21 mph, in the morning, becoming 10 mph, gusting to 25 mph, in the afternoon.
Saturday night
 
Fair to partly cloudy in the evening, becoming mostly cloudy to cloudy after midnight. Patchy light fog in the evening, then light to moderate fog after midnight. Low 74°. Wind south-southwest around 6 mph, gusting to 23 mph.

WXSIM forecast formatting script by Saratoga-Weather.org.

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