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Current Weather Conditions for O Fallon, IL

A slight chance of showers and thunderstorms between 1pm and 3pm. Mostly sunny, with a high near 91. South wind 7 to 28 mph, with gusts as high as 46 mph. Chance of precipitation is 20%.
66°F

Conditions

Wind: 7 mph S
Humidity: 93%
Probability of Precipitation: 2%

Hourly Forcast (next 12 hours)

12 PM 1 PM 2 PM 3 PM 4 PM 5 PM 6 PM 7 PM 8 PM 9 PM 10 PM 11 PM 12 AM
66° 71° 75° 79° 82° 84° 86° 88° 90° 91° 91° 89° 87°

Upcoming Week

Day Forecast High Low
Today
Mostly Sunny then Slight Chance Showers And Thunderstorms
A slight chance of showers and thunderstorms between 1pm and 3pm. Mostly sunny, with a high near 91. South wind 7 to 28 mph, with gusts as high as 46 mph. Chance of precipitation is 20%.
81°F 63°F
Tonight
Showers And Thunderstorms Likely
Showers and thunderstorms likely between 7pm and 2am. Mostly cloudy, with a low around 69. West wind 7 to 25 mph, with gusts as high as 38 mph. Chance of precipitation is 60%.
81°F 63°F
Thursday
Mostly Sunny then Slight Chance Showers And Thunderstorms
A slight chance of showers and thunderstorms between 1pm and 3pm, then a chance of showers and thunderstorms. Mostly sunny, with a high near 80. Northwest wind around 9 mph. Chance of precipitation is 30%.
81°F 63°F
Thursday Night
Partly Cloudy
Partly cloudy, with a low around 61. Northwest wind 1 to 8 mph.
81°F 63°F
Juneteenth
Sunny
Sunny, with a high near 83. Northwest wind 1 to 5 mph.
81°F 63°F
Friday Night
Mostly Clear
Mostly clear, with a low around 64.
81°F 63°F
Saturday
Mostly Sunny
Mostly sunny, with a high near 87.
81°F 63°F
Saturday Night
Chance Showers And Thunderstorms
A chance of showers and thunderstorms after 7pm. Partly cloudy, with a low around 68. Chance of precipitation is 40%.
81°F 63°F
Sunday
Chance Showers And Thunderstorms then Showers And Thunderstorms Likely
A chance of showers and thunderstorms before 7am, then showers and thunderstorms likely. Partly sunny, with a high near 85. Chance of precipitation is 70%.
81°F 63°F
Sunday Night
Showers And Thunderstorms
Showers and thunderstorms. Mostly cloudy, with a low around 68. Chance of precipitation is 80%.
81°F 63°F
Monday
Showers And Thunderstorms Likely then Slight Chance Showers And Thunderstorms
Showers and thunderstorms likely before 7am, then a slight chance of showers and thunderstorms between 7am and 1pm. Mostly cloudy, with a high near 81. Chance of precipitation is 60%.
81°F 63°F
Monday Night
Partly Cloudy
Partly cloudy, with a low around 63.
81°F 63°F
Tuesday
Mostly Sunny then Slight Chance Rain Showers
A slight chance of rain showers after 1pm. Mostly sunny, with a high near 82. Chance of precipitation is 20%.
81°F 63°F
Tuesday Night
Slight Chance Rain Showers then Partly Cloudy
A slight chance of rain showers before 7pm. Partly cloudy, with a low around 64. Chance of precipitation is 20%.
81°F 63°F
Data provided by weather.gov