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Current Weather Conditions for O Fallon, IL

Mostly sunny, with a high near 81. East wind around 8 mph.
76°F

Conditions

Wind: 6 mph E
Humidity: 50%
Probability of Precipitation: 0%

Hourly Forcast (next 12 hours)

4 PM 5 PM 6 PM 7 PM 8 PM 9 PM 10 PM 11 PM 12 AM 1 AM 2 AM 3 AM 4 AM
76° 77° 78° 79° 80° 81° 80° 79° 78° 74° 69° 67° 66°

Upcoming Week

Day Forecast High Low
Memorial Day
Mostly Sunny
Mostly sunny, with a high near 81. East wind around 8 mph.
81°F 69°F
Tonight
Mostly Cloudy
Mostly cloudy, with a low around 60. Northeast wind 2 to 7 mph.
81°F 69°F
Tuesday
Mostly Cloudy then Slight Chance Showers And Thunderstorms
A slight chance of showers and thunderstorms after 4pm. Mostly cloudy, with a high near 80. East wind 2 to 7 mph. Chance of precipitation is 20%.
81°F 69°F
Tuesday Night
Slight Chance Showers And Thunderstorms
A slight chance of showers and thunderstorms before 7pm, then a chance of showers and thunderstorms between 7pm and 8pm, then a slight chance of showers and thunderstorms between 8pm and 4am, then a chance of showers and thunderstorms. Mostly cloudy, with a low around 64. Southeast wind 1 to 6 mph. Chance of precipitation is 30%.
81°F 69°F
Wednesday
Chance Showers And Thunderstorms
A chance of rain showers before 10am, then a chance of showers and thunderstorms between 10am and 1pm, then a chance of showers and thunderstorms. Partly sunny, with a high near 83. East wind 1 to 5 mph. Chance of precipitation is 50%.
81°F 69°F
Wednesday Night
Chance Showers And Thunderstorms
A chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 66. Chance of precipitation is 50%.
81°F 69°F
Thursday
Partly Sunny then Chance Showers And Thunderstorms
A chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 84. Chance of precipitation is 30%.
81°F 69°F
Thursday Night
Chance Showers And Thunderstorms
A chance of showers and thunderstorms. Mostly cloudy, with a low around 67. Chance of precipitation is 40%.
81°F 69°F
Friday
Chance Rain Showers then Chance Showers And Thunderstorms
A chance of rain showers before 1pm, then a chance of showers and thunderstorms. Mostly cloudy, with a high near 79. Chance of precipitation is 50%.
81°F 69°F
Friday Night
Chance Showers And Thunderstorms
A chance of showers and thunderstorms before 7pm, then a chance of showers and thunderstorms. Mostly cloudy, with a low around 64. Chance of precipitation is 50%.
81°F 69°F
Saturday
Chance Showers And Thunderstorms
A chance of rain showers before 7am, then a chance of showers and thunderstorms between 7am and 1pm, then a chance of showers and thunderstorms. Mostly cloudy, with a high near 78. Chance of precipitation is 40%.
81°F 69°F
Saturday Night
Chance Showers And Thunderstorms
A chance of showers and thunderstorms. Mostly cloudy, with a low around 61. Chance of precipitation is 40%.
81°F 69°F
Sunday
Slight Chance Rain Showers then Mostly Sunny
A slight chance of rain showers before 7am. Mostly sunny, with a high near 78.
81°F 69°F
Sunday Night
Partly Cloudy
Partly cloudy, with a low around 60.
81°F 69°F
Data provided by weather.gov