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Current Weather Conditions for O Fallon, IL

A chance of showers and thunderstorms. Partly sunny, with a high near 88. South wind around 8 mph. Chance of precipitation is 30%.
87°F

Conditions

Wind: 8 mph S
Humidity: 52%
Probability of Precipitation: 25%

Hourly Forcast (next 12 hours)

10 PM 11 PM 12 AM 1 AM 2 AM 3 AM 4 AM 5 AM 6 AM 7 AM 8 AM 9 AM 10 AM
87° 85° 83° 81° 78° 77° 75° 74° 74° 73° 73° 73° 72°

Upcoming Week

Day Forecast High Low
This Afternoon
Chance Showers And Thunderstorms
A chance of showers and thunderstorms. Partly sunny, with a high near 88. South wind around 8 mph. Chance of precipitation is 30%.
87°F 71°F
Tonight
Chance Showers And Thunderstorms
A chance of showers and thunderstorms before 1am, then a chance of showers and thunderstorms. Mostly cloudy, with a low around 72. South wind 7 to 12 mph. Chance of precipitation is 40%.
87°F 71°F
Monday
Showers And Thunderstorms Likely
A chance of showers and thunderstorms before 7am, then a chance of showers and thunderstorms between 7am and 11am, then showers and thunderstorms likely between 11am and 4pm, then a chance of showers and thunderstorms. Mostly cloudy, with a high near 84. South wind around 10 mph. Chance of precipitation is 60%.
87°F 71°F
Monday Night
Chance Showers And Thunderstorms
A chance of showers and thunderstorms before 4am, then a chance of showers and thunderstorms. Mostly cloudy, with a low around 72. South wind 3 to 8 mph. Chance of precipitation is 50%.
87°F 71°F
Tuesday
Chance Showers And Thunderstorms
A chance of showers and thunderstorms before 1pm, then a slight chance of showers and thunderstorms. Mostly sunny, with a high near 92. Southwest wind 5 to 8 mph. Chance of precipitation is 40%.
87°F 71°F
Tuesday Night
Slight Chance Showers And Thunderstorms then Mostly Clear
A slight chance of showers and thunderstorms before 7pm. Mostly clear, with a low around 75. Chance of precipitation is 20%.
87°F 71°F
Wednesday
Sunny
Sunny, with a high near 94.
87°F 71°F
Wednesday Night
Slight Chance Showers And Thunderstorms
A slight chance of showers and thunderstorms after 7pm. Mostly clear, with a low around 77. Chance of precipitation is 20%.
87°F 71°F
Thursday
Chance Showers And Thunderstorms
A slight chance of rain showers before 7am, then a chance of showers and thunderstorms. Mostly sunny, with a high near 92. Chance of precipitation is 30%.
87°F 71°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 69. Chance of precipitation is 70%.
87°F 71°F
Friday
Chance Rain Showers
A chance of rain showers. Mostly sunny, with a high near 87. Chance of precipitation is 40%.
87°F 71°F
Friday Night
Slight Chance Rain Showers
A slight chance of rain showers. Mostly clear, with a low around 68. Chance of precipitation is 20%.
87°F 71°F
Saturday
Chance Showers And Thunderstorms
A slight chance of rain showers before 1pm, then a chance of showers and thunderstorms. Mostly sunny, with a high near 89. Chance of precipitation is 30%.
87°F 71°F
Saturday Night
Chance Showers And Thunderstorms
A chance of showers and thunderstorms before 7pm, then a chance of showers and thunderstorms. Partly cloudy, with a low around 69. Chance of precipitation is 30%.
87°F 71°F
Data provided by weather.gov