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Current Weather Conditions for O Fallon, IL

A slight chance of rain showers before 1pm, then a chance of showers and thunderstorms. Mostly cloudy, with a high near 88. Southeast wind 6 to 13 mph. Chance of precipitation is 30%.
82°F

Conditions

Wind: 6 mph S
Humidity: 69%
Probability of Precipitation: 16%

Hourly Forcast (next 12 hours)

3 PM 4 PM 5 PM 6 PM 7 PM 8 PM 9 PM 10 PM 11 PM 12 AM 1 AM 2 AM 3 AM
82° 83° 84° 86° 87° 87° 87° 86° 85° 84° 81° 78° 77°

Upcoming Week

Day Forecast High Low
Today
Slight Chance Rain Showers then Chance Showers And Thunderstorms
A slight chance of rain showers before 1pm, then a chance of showers and thunderstorms. Mostly cloudy, with a high near 88. Southeast wind 6 to 13 mph. Chance of precipitation is 30%.
87°F 79°F
Tonight
Chance Showers And Thunderstorms
A chance of showers and thunderstorms before 1am, then a chance of showers and thunderstorms between 1am and 4am, then a chance of showers and thunderstorms. Mostly cloudy, with a low around 72. South wind 7 to 13 mph. Chance of precipitation is 40%.
87°F 79°F
Monday
Chance Showers And Thunderstorms then Showers And Thunderstorms
A chance of showers and thunderstorms before 7am, then showers and thunderstorms. Mostly cloudy, with a high near 86. South wind around 10 mph. Chance of precipitation is 80%.
87°F 79°F
Monday Night
Chance Showers And Thunderstorms then Showers And Thunderstorms
A chance of showers and thunderstorms before 7pm, then showers and thunderstorms. Mostly cloudy, with a low around 72. South wind 3 to 8 mph. Chance of precipitation is 80%.
87°F 79°F
Tuesday
Showers And Thunderstorms Likely then Mostly Sunny
Showers and thunderstorms likely before 7am. Mostly sunny, with a high near 92. Southwest wind 3 to 7 mph. Chance of precipitation is 60%.
87°F 79°F
Tuesday Night
Mostly Clear
Mostly clear, with a low around 75.
87°F 79°F
Wednesday
Sunny
Sunny, with a high near 95.
87°F 79°F
Wednesday Night
Mostly Clear
Mostly clear, with a low around 76.
87°F 79°F
Thursday
Mostly Sunny then Chance Showers And Thunderstorms
A chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 93. Chance of precipitation is 40%.
87°F 79°F
Thursday Night
Chance Showers And Thunderstorms then Showers And Thunderstorms Likely
A chance of showers and thunderstorms before 7pm, then showers and thunderstorms likely. Partly cloudy, with a low around 72. Chance of precipitation is 60%.
87°F 79°F
Friday
Chance Rain Showers then Slight Chance Showers And Thunderstorms
A chance of rain showers before 1pm, then a slight chance of showers and thunderstorms. Mostly sunny, with a high near 88. Chance of precipitation is 40%.
87°F 79°F
Friday Night
Slight Chance Showers And Thunderstorms
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 69. Chance of precipitation is 20%.
87°F 79°F
Saturday
Slight Chance Rain Showers then Slight Chance Showers And Thunderstorms
A slight chance of rain showers before 7am, then a slight chance of showers and thunderstorms. Mostly sunny, with a high near 87. Chance of precipitation is 20%.
87°F 79°F
Saturday Night
Chance Showers And Thunderstorms
A chance of showers and thunderstorms. Partly cloudy, with a low around 69. Chance of precipitation is 30%.
87°F 79°F
Data provided by weather.gov