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Current Weather Conditions for O Fallon, IL

Clear, with a low around 35. South wind around 8 mph, with gusts as high as 21 mph.
36°F

Conditions

Wind: 8 mph S
Humidity: 54%
Probability of Precipitation: 0%

Hourly Forcast (next 12 hours)

6 AM 7 AM 8 AM 9 AM 10 AM 11 AM 12 PM 1 PM 2 PM 3 PM 4 PM 5 PM 6 PM
36° 35° 36° 36° 36° 36° 36° 36° 42° 49° 56° 59° 64°

Upcoming Week

Day Forecast High Low
Overnight
Clear
Clear, with a low around 35. South wind around 8 mph, with gusts as high as 21 mph.
56°F 39°F
Sunday
Sunny
Sunny. High near 70, with temperatures falling to around 65 in the afternoon. Southwest wind 7 to 12 mph, with gusts as high as 23 mph.
56°F 39°F
Sunday Night
Clear
Clear, with a low around 45. Southwest wind 5 to 8 mph.
56°F 39°F
Monday
Sunny
Sunny. High near 73, with temperatures falling to around 68 in the afternoon. South wind 6 to 15 mph, with gusts as high as 23 mph.
56°F 39°F
Monday Night
Mostly Cloudy then Slight Chance Light Rain
A slight chance of rain after midnight. Mostly cloudy, with a low around 57. South wind 12 to 16 mph, with gusts as high as 25 mph. Chance of precipitation is 20%.
56°F 39°F
Tuesday
Partly Sunny
Partly sunny. High near 78, with temperatures falling to around 73 in the afternoon.
56°F 39°F
Tuesday Night
Chance Showers And Thunderstorms
A chance of showers and thunderstorms. Mostly cloudy, with a low around 33. Chance of precipitation is 50%.
56°F 39°F
Wednesday
Chance Showers And Thunderstorms then Mostly Sunny
A chance of showers and thunderstorms before noon. Mostly sunny, with a high near 39. Chance of precipitation is 30%.
56°F 39°F
Wednesday Night
Mostly Clear
Mostly clear, with a low around 23.
56°F 39°F
Thursday
Sunny
Sunny, with a high near 46.
56°F 39°F
Thursday Night
Mostly Clear then Slight Chance Light Rain
A slight chance of rain after midnight. Mostly clear, with a low around 30. Chance of precipitation is 20%.
56°F 39°F
Friday
Sunny
Sunny, with a high near 55.
56°F 39°F
Friday Night
Mostly Clear
Mostly clear, with a low around 38.
56°F 39°F
Saturday
Sunny
Sunny, with a high near 64.
56°F 39°F
Data provided by weather.gov