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Current Weather Conditions for O Fallon, IL

A slight chance of showers and thunderstorms between 10am and 11am, then a chance of showers and thunderstorms between 11am and 1pm, then a chance of showers and thunderstorms between 1pm and 5pm. Mostly sunny, with a high near 81. Southwest wind 5 to 13 mph, with gusts as high as 21 mph. Chance of precipitation is 50%.
58°F

Conditions

Wind: 5 mph S
Humidity: 87%
Probability of Precipitation: 0%

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
58° 61° 65° 70° 75° 76° 75° 75° 76° 78° 79° 79° 80°

Upcoming Week

Day Forecast High Low
Today
Slight Chance Showers And Thunderstorms then Chance Showers And Thunderstorms
A slight chance of showers and thunderstorms between 10am and 11am, then a chance of showers and thunderstorms between 11am and 1pm, then a chance of showers and thunderstorms between 1pm and 5pm. Mostly sunny, with a high near 81. Southwest wind 5 to 13 mph, with gusts as high as 21 mph. Chance of precipitation is 50%.
85°F 70°F
Tonight
Mostly Clear
Mostly clear, with a low around 59. Southwest wind 0 to 12 mph.
85°F 70°F
Wednesday
Sunny
Sunny, with a high near 91. South wind 5 to 25 mph, with gusts as high as 41 mph.
85°F 70°F
Wednesday Night
Showers And Thunderstorms Likely then Showers And Thunderstorms
Showers and thunderstorms likely between 7pm and 10pm, then showers and thunderstorms between 10pm and 1am, then a slight chance of showers and thunderstorms. Mostly cloudy, with a low around 70. Southwest wind 8 to 24 mph, with gusts as high as 37 mph. Chance of precipitation is 80%.
85°F 70°F
Thursday
Chance Rain Showers
A chance of rain showers before 1pm, then a chance of showers and thunderstorms. Mostly sunny, with a high near 81. Northwest wind around 9 mph. Chance of precipitation is 30%.
85°F 70°F
Thursday Night
Chance Showers And Thunderstorms
A chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 61. Chance of precipitation is 30%.
85°F 70°F
Juneteenth
Sunny
Sunny, with a high near 82.
85°F 70°F
Friday Night
Mostly Clear
Mostly clear, with a low around 62.
85°F 70°F
Saturday
Mostly Sunny
Mostly sunny, with a high near 85.
85°F 70°F
Saturday Night
Chance Showers And Thunderstorms
A slight chance of rain showers between 7pm and 1am, then a chance of showers and thunderstorms. Partly cloudy, with a low around 67. Chance of precipitation is 40%.
85°F 70°F
Sunday
Showers And Thunderstorms Likely
Showers and thunderstorms likely. Partly sunny, with a high near 86. Chance of precipitation is 60%.
85°F 70°F
Sunday Night
Showers And Thunderstorms Likely
Showers and thunderstorms likely. Mostly cloudy, with a low around 70. Chance of precipitation is 70%.
85°F 70°F
Monday
Showers And Thunderstorms Likely then Chance Showers And Thunderstorms
Showers and thunderstorms likely before 7am, then a chance of showers and thunderstorms. Mostly cloudy, with a high near 86. Chance of precipitation is 70%.
85°F 70°F
Monday Night
Chance Showers And Thunderstorms
A chance of showers and thunderstorms. Mostly cloudy, with a low around 68. Chance of precipitation is 30%.
85°F 70°F
Data provided by weather.gov