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Current Weather Conditions for O Fallon, IL

A chance of rain showers after 3pm. Mostly cloudy, with a high near 79. South wind 17 to 21 mph, with gusts as high as 31 mph. Chance of precipitation is 30%.
78°F

Conditions

Wind: 17 mph S
Humidity: 50%
Probability of Precipitation: 7%

Hourly Forcast (next 12 hours)

6 PM 7 PM 8 PM 9 PM 10 PM 11 PM 12 AM 1 AM 2 AM 3 AM 4 AM 5 AM 6 AM
78° 79° 79° 77° 76° 75° 74° 72° 71° 70° 69° 68° 67°

Upcoming Week

Day Forecast High Low
This Afternoon
Chance Rain Showers
A chance of rain showers after 3pm. Mostly cloudy, with a high near 79. South wind 17 to 21 mph, with gusts as high as 31 mph. Chance of precipitation is 30%.
79°F 56°F
Tonight
Chance Showers And Thunderstorms
A slight chance of rain showers before 7pm, then a chance of showers and thunderstorms between 7pm and 10pm, then a chance of showers and thunderstorms between 10pm and 3am. Mostly cloudy, with a low around 66. South wind 12 to 17 mph, with gusts as high as 28 mph. Chance of precipitation is 40%.
79°F 56°F
Monday
Partly Sunny
Partly sunny, with a high near 83. Southwest wind 10 to 18 mph, with gusts as high as 26 mph.
79°F 56°F
Monday Night
Slight Chance Showers And Thunderstorms then Partly Cloudy
A slight chance of showers and thunderstorms before 7pm. Partly cloudy, with a low around 68. South wind 10 to 17 mph, with gusts as high as 25 mph. Chance of precipitation is 20%.
79°F 56°F
Tuesday
Partly Sunny then Slight Chance Showers And Thunderstorms
A slight chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 86. Southwest wind 10 to 17 mph, with gusts as high as 26 mph. Chance of precipitation is 20%.
79°F 56°F
Tuesday Night
Slight Chance Showers And Thunderstorms
A slight chance of showers and thunderstorms before 1am, then a chance of showers and thunderstorms between 1am and 4am, then a chance of showers and thunderstorms. Mostly cloudy, with a low around 69. Chance of precipitation is 40%.
79°F 56°F
Wednesday
Chance Showers And Thunderstorms then Showers And Thunderstorms Likely
A chance of showers and thunderstorms before 7am, then showers and thunderstorms likely. Mostly cloudy, with a high near 81. Chance of precipitation is 70%.
79°F 56°F
Wednesday Night
Showers And Thunderstorms Likely
Showers and thunderstorms likely. Mostly cloudy, with a low around 64. Chance of precipitation is 70%.
79°F 56°F
Thursday
Showers And Thunderstorms Likely
Showers and thunderstorms likely before 1pm. Partly sunny, with a high near 83. Chance of precipitation is 60%.
79°F 56°F
Thursday Night
Mostly Clear
Mostly clear, with a low around 63.
79°F 56°F
Friday
Mostly Sunny then Slight Chance Showers And Thunderstorms
A slight chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 87. Chance of precipitation is 20%.
79°F 56°F
Friday Night
Slight Chance Showers And Thunderstorms then Chance Showers And Thunderstorms
A slight 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%.
79°F 56°F
Saturday
Showers And Thunderstorms Likely
Showers and thunderstorms likely. Partly sunny, with a high near 78. Chance of precipitation is 60%.
79°F 56°F
Saturday Night
Showers And Thunderstorms Likely then Chance Showers And Thunderstorms
Showers and thunderstorms likely before 7pm, then a chance of showers and thunderstorms between 7pm and 1am, then a chance of showers and thunderstorms. Mostly cloudy, with a low around 46. Chance of precipitation is 60%.
79°F 56°F
Data provided by weather.gov