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Current Weather Conditions for O Fallon, IL

Sunny, with a high near 79. East wind around 13 mph.
78°F

Conditions

Wind: 12 mph E
Humidity: 45%
Probability of Precipitation: 0%

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
78° 79° 79° 78° 78° 77° 71° 68° 66° 65° 63° 61° 59°

Upcoming Week

Day Forecast High Low
This Afternoon
Sunny
Sunny, with a high near 79. East wind around 13 mph.
85°F 75°F
Tonight
Mostly Clear
Mostly clear, with a low around 56. East wind 2 to 12 mph.
85°F 75°F
Wednesday
Sunny
Sunny, with a high near 81. East wind 3 to 7 mph.
85°F 75°F
Wednesday Night
Mostly Clear
Mostly clear, with a low around 60. Southeast wind 2 to 7 mph.
85°F 75°F
Thursday
Sunny
Sunny, with a high near 85. South wind 3 to 12 mph.
85°F 75°F
Thursday Night
Mostly Clear
Mostly clear, with a low around 64.
85°F 75°F
Friday
Mostly Sunny
Mostly sunny, with a high near 86.
85°F 75°F
Friday Night
Mostly Cloudy then Slight Chance Showers And Thunderstorms
A slight chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 68. Chance of precipitation is 20%.
85°F 75°F
Saturday
Slight Chance Showers And Thunderstorms then Chance Showers And Thunderstorms
A slight chance of showers and thunderstorms before 7am, then a chance of showers and thunderstorms between 7am and 1pm, then a chance of showers and thunderstorms. Partly sunny, with a high near 88. Chance of precipitation is 40%.
85°F 75°F
Saturday Night
Chance Showers And Thunderstorms
A chance of showers and thunderstorms. Mostly cloudy, with a low around 70. Chance of precipitation is 40%.
85°F 75°F
Sunday
Chance Showers And Thunderstorms
A slight chance of rain showers before 7am, then a chance of showers and thunderstorms. Partly sunny, with a high near 87. Chance of precipitation is 40%.
85°F 75°F
Sunday Night
Chance Showers And Thunderstorms
A chance of showers and thunderstorms. Mostly cloudy, with a low around 70. Chance of precipitation is 40%.
85°F 75°F
Monday
Chance Showers And Thunderstorms
A chance of showers and thunderstorms before 7am, then a chance of showers and thunderstorms between 7am and 1pm, then a chance of showers and thunderstorms. Partly sunny, with a high near 87. Chance of precipitation is 50%.
85°F 75°F
Monday Night
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 70. Chance of precipitation is 50%.
85°F 75°F
Data provided by weather.gov