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Current Weather Conditions for O Fallon, IL

A slight chance of rain showers between midnight and 1am, then a chance of showers and thunderstorms between 1am and 4am, then a chance of showers and thunderstorms between 4am and 5am, then showers and thunderstorms likely. Mostly cloudy, with a low around 62. Southeast wind 6 to 13 mph, with gusts as high as 22 mph. Chance of precipitation is 60%.
70°F

Conditions

Wind: 6 mph SE
Humidity: 59%
Probability of Precipitation: 1%

Hourly Forcast (next 12 hours)

2 AM 3 AM 4 AM 5 AM 6 AM 7 AM 8 AM 9 AM 10 AM 11 AM 12 PM 1 PM 2 PM
70° 69° 67° 66° 66° 65° 64° 64° 64° 62° 64° 64° 66°

Upcoming Week

Day Forecast High Low
Tonight
Mostly Cloudy then Chance Showers And Thunderstorms
A slight chance of rain showers between midnight and 1am, then a chance of showers and thunderstorms between 1am and 4am, then a chance of showers and thunderstorms between 4am and 5am, then showers and thunderstorms likely. Mostly cloudy, with a low around 62. Southeast wind 6 to 13 mph, with gusts as high as 22 mph. Chance of precipitation is 60%.
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Monday
Chance Showers And Thunderstorms
A chance of showers and thunderstorms. Some of the storms could produce heavy rain. Mostly cloudy, with a high near 81. South wind 14 to 22 mph, with gusts as high as 35 mph. Chance of precipitation is 50%.
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Monday Night
Showers And Thunderstorms Likely then Partly Cloudy
Showers and thunderstorms likely before 7pm, then showers and thunderstorms between 7pm and 9pm, then a chance of showers and thunderstorms between 9pm and 10pm, then a chance of showers and thunderstorms between 10pm and 11pm, then a slight chance of showers and thunderstorms between 11pm and midnight. Some of the storms could produce heavy rain. Partly cloudy, with a low around 55. Southwest wind 7 to 22 mph, with gusts as high as 32 mph. Chance of precipitation is 90%.
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Tuesday
Sunny then Chance Showers And Thunderstorms
A chance of rain showers between 1pm and 4pm, then a chance of showers and thunderstorms. Sunny, with a high near 72. North wind around 7 mph. Chance of precipitation is 30%.
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Tuesday Night
Chance Showers And Thunderstorms then Showers And Thunderstorms Likely
A chance of showers and thunderstorms before 7pm, then showers and thunderstorms likely. Mostly cloudy, with a low around 52. North wind 6 to 9 mph. Chance of precipitation is 70%.
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Wednesday
Chance Rain Showers then Sunny
A chance of rain showers before 7am. Sunny, with a high near 66. Chance of precipitation is 30%.
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Wednesday Night
Partly Cloudy
Partly cloudy, with a low around 44.
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Thursday
Mostly Sunny
Mostly sunny, with a high near 68.
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Thursday Night
Partly Cloudy
Partly cloudy, with a low around 47.
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Friday
Mostly Sunny
Mostly sunny, with a high near 65.
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Friday Night
Partly Cloudy
Partly cloudy, with a low around 44.
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Saturday
Mostly Sunny
Mostly sunny, with a high near 68.
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Saturday Night
Partly Cloudy
Partly cloudy, with a low around 45.
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Sunday
Sunny
Sunny, with a high near 72.
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Data provided by weather.gov