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Current Weather Conditions for O Fallon, IL

Scattered showers and thunderstorms before 3pm, then scattered showers and thunderstorms. Cloudy. High near 89, with temperatures falling to around 84 in the afternoon. Northwest wind around 7 mph. Chance of precipitation is 50%.
85°F

Conditions

Wind: 7 mph SW
Humidity: 65%
Probability of Precipitation: 32%

Hourly Forcast (next 12 hours)

7 PM 8 PM 9 PM 10 PM 11 PM 12 AM 1 AM 2 AM 3 AM 4 AM 5 AM 6 AM 7 AM
85° 85° 85° 84° 85° 83° 82° 80° 79° 77° 76° 76° 74°

Upcoming Week

Day Forecast High Low
This Afternoon
Scattered Showers And Thunderstorms
Scattered showers and thunderstorms before 3pm, then scattered showers and thunderstorms. Cloudy. High near 89, with temperatures falling to around 84 in the afternoon. Northwest wind around 7 mph. Chance of precipitation is 50%.
89°F 76°F
Tonight
Chance Showers And Thunderstorms
A chance of showers and thunderstorms. Mostly cloudy, with a low around 73. South wind 3 to 7 mph. Chance of precipitation is 70%.
89°F 76°F
Friday
Scattered Showers And Thunderstorms
Scattered showers and thunderstorms. Partly sunny, with a high near 89. Heat index values as high as 100. West wind around 7 mph. Chance of precipitation is 30%.
89°F 76°F
Friday Night
Chance Showers And Thunderstorms
A chance of showers and thunderstorms. Mostly cloudy, with a low around 71. Southeast wind 1 to 6 mph. Chance of precipitation is 70%.
89°F 76°F
Saturday
Chance Showers And Thunderstorms
A chance of showers and thunderstorms. Partly sunny, with a high near 86. Southwest wind 1 to 6 mph. Chance of precipitation is 70%.
89°F 76°F
Saturday Night
Chance Showers And Thunderstorms
A chance of showers and thunderstorms before 1am, then a chance of showers and thunderstorms. Partly cloudy, with a low around 69. Chance of precipitation is 50%.
89°F 76°F
Sunday
Chance Showers And Thunderstorms then Slight Chance Showers And Thunderstorms
A chance of showers and thunderstorms before 7am, then a slight chance of showers and thunderstorms. Mostly sunny, with a high near 86. Chance of precipitation is 30%.
89°F 76°F
Sunday Night
Slight Chance Showers And Thunderstorms then Mostly Clear
A slight chance of showers and thunderstorms before 7pm. Mostly clear, with a low around 68. Chance of precipitation is 20%.
89°F 76°F
Monday
Sunny
Sunny, with a high near 88.
89°F 76°F
Monday Night
Mostly Clear
Mostly clear, with a low around 70.
89°F 76°F
Tuesday
Sunny
Sunny, with a high near 89.
89°F 76°F
Tuesday Night
Mostly Clear
Mostly clear, with a low around 71.
89°F 76°F
Wednesday
Sunny
Sunny, with a high near 91.
89°F 76°F
Wednesday Night
Mostly Clear
Mostly clear, with a low around 72.
89°F 76°F
Data provided by weather.gov