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Current Weather Conditions for O Fallon, IL

Scattered showers and thunderstorms. Cloudy, with a high near 83. South wind around 8 mph. Chance of precipitation is 40%.
75°F

Conditions

Wind: 6 mph S
Humidity: 82%
Probability of Precipitation: 42%

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
75° 78° 79° 81° 82° 82° 82° 81° 79° 78° 76° 74° 73°

Upcoming Week

Day Forecast High Low
Today
Scattered Showers And Thunderstorms
Scattered showers and thunderstorms. Cloudy, with a high near 83. South wind around 8 mph. Chance of precipitation is 40%.
82°F 73°F
Tonight
Chance Showers And Thunderstorms
A chance of showers and thunderstorms before 3am, then showers and thunderstorms likely between 3am and 5am, then a slight chance of showers and thunderstorms. Some of the storms could produce heavy rain. Mostly cloudy, with a low around 67. Southwest wind 5 to 8 mph. Chance of precipitation is 60%.
82°F 73°F
Sunday
Slight Chance Showers And Thunderstorms then Mostly Sunny
A slight chance of showers and thunderstorms before 10am. Mostly sunny, with a high near 77. Northwest wind 10 to 15 mph. Chance of precipitation is 20%.
82°F 73°F
Sunday Night
Partly Cloudy
Partly cloudy, with a low around 57. Northwest wind 1 to 13 mph.
82°F 73°F
Monday
Mostly Sunny
Mostly sunny, with a high near 77. Northwest wind 0 to 7 mph.
82°F 73°F
Monday Night
Mostly Clear
Mostly clear, with a low around 59.
82°F 73°F
Tuesday
Mostly Sunny
Mostly sunny, with a high near 82.
82°F 73°F
Tuesday Night
Chance Showers And Thunderstorms
A chance of showers and thunderstorms after 7pm. Partly cloudy, with a low around 63. Chance of precipitation is 30%.
82°F 73°F
Wednesday
Slight Chance Rain Showers then Chance Showers And Thunderstorms
A slight chance of rain showers before 1pm, then a chance of showers and thunderstorms. Mostly sunny, with a high near 87. Chance of precipitation is 40%.
82°F 73°F
Wednesday Night
Chance Showers And Thunderstorms then Showers And Thunderstorms Likely
A chance of showers and thunderstorms before 7pm, then showers and thunderstorms likely. Partly cloudy, with a low around 71. Chance of precipitation is 70%.
82°F 73°F
Thursday
Rain Showers Likely
Rain showers likely. Partly sunny, with a high near 84. Chance of precipitation is 60%.
82°F 73°F
Thursday Night
Chance Rain Showers
A chance of rain showers. Partly cloudy, with a low around 65. Chance of precipitation is 40%.
82°F 73°F
Juneteenth
Chance Rain Showers
A chance of rain showers before 1pm. Mostly sunny, with a high near 84. Chance of precipitation is 40%.
82°F 73°F
Friday Night
Partly Cloudy then Slight Chance Rain Showers
A slight chance of rain showers after 1am. Partly cloudy, with a low around 66. Chance of precipitation is 20%.
82°F 73°F
Data provided by weather.gov