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Current Weather Conditions for O Fallon, IL

A chance of showers and thunderstorms before noon, then showers and thunderstorms between noon and 3pm, then showers and thunderstorms likely between 3pm and 4pm, then showers and thunderstorms likely. Mostly cloudy, with a high near 83. Southeast wind 3 to 8 mph. Chance of precipitation is 80%.
73°F

Conditions

Wind: 6 mph SW
Humidity: 97%
Probability of Precipitation: 43%

Hourly Forcast (next 12 hours)

11 AM 12 PM 1 PM 2 PM 3 PM 4 PM 5 PM 6 PM 7 PM 8 PM 9 PM 10 PM 11 PM
73° 74° 74° 75° 77° 79° 80° 81° 81° 81° 82° 81° 81°

Upcoming Week

Day Forecast High Low
Today
Chance Showers And Thunderstorms then Showers And Thunderstorms
A chance of showers and thunderstorms before noon, then showers and thunderstorms between noon and 3pm, then showers and thunderstorms likely between 3pm and 4pm, then showers and thunderstorms likely. Mostly cloudy, with a high near 83. Southeast wind 3 to 8 mph. Chance of precipitation is 80%.
91°F 74°F
Tonight
Chance Showers And Thunderstorms then Partly Cloudy
A chance of showers and thunderstorms before 7pm, then a chance of showers and thunderstorms between 7pm and 10pm. Partly cloudy, with a low around 69. North wind 5 to 9 mph. Chance of precipitation is 50%.
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Sunday
Mostly Sunny
Mostly sunny, with a high near 85. Northeast wind 7 to 13 mph.
91°F 74°F
Sunday Night
Clear
Clear, with a low around 67. Northeast wind 5 to 12 mph.
91°F 74°F
Monday
Sunny
Sunny, with a high near 87. Northeast wind 5 to 12 mph.
91°F 74°F
Monday Night
Mostly Clear
Mostly clear, with a low around 69.
91°F 74°F
Tuesday
Sunny then Slight Chance Showers And Thunderstorms
A slight chance of showers and thunderstorms after 1pm. Sunny, with a high near 88. Chance of precipitation is 20%.
91°F 74°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 71. Chance of precipitation is 20%.
91°F 74°F
Wednesday
Mostly Sunny then Slight Chance Showers And Thunderstorms
A slight chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 90. Chance of precipitation is 20%.
91°F 74°F
Wednesday Night
Slight Chance Showers And Thunderstorms then Mostly Clear
A slight chance of showers and thunderstorms before 7pm. Mostly clear, with a low around 72. Chance of precipitation is 20%.
91°F 74°F
Thursday
Sunny
Sunny, with a high near 91.
91°F 74°F
Thursday Night
Mostly Clear
Mostly clear, with a low around 73.
91°F 74°F
Friday
Sunny
Sunny, with a high near 92.
91°F 74°F
Friday Night
Mostly Clear
Mostly clear, with a low around 73.
91°F 74°F
Data provided by weather.gov