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Current Weather Conditions for O Fallon, IL

Mostly sunny, with a high near 82. Southwest wind 9 to 17 mph, with gusts as high as 25 mph.
66°F

Conditions

Wind: 9 mph S
Humidity: 87%
Probability of Precipitation: 3%

Hourly Forcast (next 12 hours)

12 PM 1 PM 2 PM 3 PM 4 PM 5 PM 6 PM 7 PM 8 PM 9 PM 10 PM 11 PM 12 AM
66° 68° 71° 73° 75° 78° 80° 81° 82° 82° 81° 81° 79°

Upcoming Week

Day Forecast High Low
Today
Mostly Sunny
Mostly sunny, with a high near 82. Southwest wind 9 to 17 mph, with gusts as high as 25 mph.
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Tonight
Partly Cloudy
Partly cloudy, with a low around 68. South wind 10 to 18 mph, with gusts as high as 29 mph.
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Tuesday
Mostly Sunny then Chance Showers And Thunderstorms
A chance of showers and thunderstorms between 1pm and 4pm, then a chance of showers and thunderstorms. Mostly sunny, with a high near 86. Southwest wind 9 to 17 mph, with gusts as high as 25 mph. Chance of precipitation is 30%.
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Tuesday Night
Chance Showers And Thunderstorms
A chance of showers and thunderstorms before 7pm, then a chance of showers and thunderstorms between 7pm and 10pm, then a chance of showers and thunderstorms. Mostly cloudy, with a low around 70. South wind 9 to 16 mph, with gusts as high as 24 mph. Chance of precipitation is 40%.
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Wednesday
Showers And Thunderstorms Likely
Rain showers likely before 10am, then showers and thunderstorms likely. Mostly cloudy, with a high near 82. Southwest wind 9 to 15 mph. Chance of precipitation is 70%.
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Wednesday Night
Showers And Thunderstorms Likely
Showers and thunderstorms likely. Mostly cloudy, with a low around 63. Chance of precipitation is 70%.
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Thursday
Showers And Thunderstorms Likely
Showers and thunderstorms likely before 1pm, then a chance of showers and thunderstorms. Mostly sunny, with a high near 82. Chance of precipitation is 70%.
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Thursday Night
Chance Showers And Thunderstorms then Mostly Clear
A chance of showers and thunderstorms before 7pm. Mostly clear, with a low around 62. Chance of precipitation is 30%.
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Friday
Partly Sunny then Slight Chance Showers And Thunderstorms
A slight chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 87. Chance of precipitation is 20%.
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Friday Night
Slight Chance Showers And Thunderstorms then Showers And Thunderstorms Likely
A slight chance of showers and thunderstorms before 7pm, then showers and thunderstorms likely. Mostly cloudy, with a low around 62. Chance of precipitation is 70%.
65°F 45°F
Saturday
Showers And Thunderstorms Likely
Showers and thunderstorms likely. Partly sunny, with a high near 74. Chance of precipitation is 70%.
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Saturday Night
Chance Showers And Thunderstorms
A chance of showers and thunderstorms. Partly cloudy, with a low around 45. Chance of precipitation is 50%.
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Sunday
Slight Chance Rain Showers then Sunny
A slight chance of rain showers before 7am. Sunny, with a high near 64. Chance of precipitation is 20%.
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Sunday Night
Mostly Clear
Mostly clear, with a low around 41.
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Data provided by weather.gov