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Current Weather Conditions for O Fallon, IL

A chance of showers and thunderstorms before 9pm, then showers and thunderstorms between 9pm and midnight, then a slight chance of showers and thunderstorms between midnight and 1am. Some of the storms could be severe. Mostly cloudy, with a low around 65. West wind 5 to 14 mph, with gusts as high as 22 mph. Chance of precipitation is 100%.
84°F

Conditions

Wind: 14 mph SW
Humidity: 70%
Probability of Precipitation: 46%

Hourly Forcast (next 12 hours)

1 AM 2 AM 3 AM 4 AM 5 AM 6 AM 7 AM 8 AM 9 AM 10 AM 11 AM 12 PM 1 PM
84° 81° 78° 76° 73° 72° 70° 67° 67° 66° 65° 66° 67°

Upcoming Week

Day Forecast High Low
Tonight
Chance Showers And Thunderstorms
A chance of showers and thunderstorms before 9pm, then showers and thunderstorms between 9pm and midnight, then a slight chance of showers and thunderstorms between midnight and 1am. Some of the storms could be severe. Mostly cloudy, with a low around 65. West wind 5 to 14 mph, with gusts as high as 22 mph. Chance of precipitation is 100%.
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Friday
Sunny
Sunny, with a high near 84. Northwest wind 2 to 6 mph.
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Friday Night
Mostly Clear
Mostly clear, with a low around 64. Southeast wind 0 to 3 mph.
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Saturday
Chance Showers And Thunderstorms
A slight chance of rain showers before 7am, then a chance of showers and thunderstorms between 7am and 1pm, then showers and thunderstorms likely. Partly sunny, with a high near 84. South wind 3 to 10 mph. Chance of precipitation is 60%.
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Saturday Night
Showers And Thunderstorms
Showers and thunderstorms. Mostly cloudy, with a low around 68. Southwest wind 5 to 13 mph. Chance of precipitation is 90%.
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Sunday
Showers And Thunderstorms then Partly Sunny
Showers and thunderstorms before 7am. Partly sunny, with a high near 77. Chance of precipitation is 90%.
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Sunday Night
Partly Cloudy
Partly cloudy, with a low around 60.
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Monday
Mostly Sunny
Mostly sunny, with a high near 79.
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Monday Night
Partly Cloudy
Partly cloudy, with a low around 61.
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Tuesday
Mostly Sunny
Mostly sunny, with a high near 82.
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Tuesday Night
Partly Cloudy
Partly cloudy, with a low around 64.
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Wednesday
Mostly Sunny then Slight Chance Showers And Thunderstorms
A slight chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 88. Chance of precipitation is 20%.
85°F 71°F
Wednesday Night
Chance Showers And Thunderstorms
A chance of showers and thunderstorms before 1am, then showers and thunderstorms likely. Partly cloudy, with a low around 70. Chance of precipitation is 60%.
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Thursday
Showers And Thunderstorms Likely then Chance Showers And Thunderstorms
Showers and thunderstorms likely before 7am, then a chance of showers and thunderstorms. Mostly sunny, with a high near 88. Chance of precipitation is 60%.
85°F 71°F
Data provided by weather.gov