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Current Weather Conditions for O Fallon, IL

Mostly cloudy, with a low around 58. East wind around 8 mph.
66°F

Conditions

Wind: 8 mph E
Humidity: 70%
Probability of Precipitation: 1%

Hourly Forcast (next 12 hours)

11 PM 12 AM 1 AM 2 AM 3 AM 4 AM 5 AM 6 AM 7 AM 8 AM 9 AM 10 AM 11 AM
66° 65° 65° 65° 63° 62° 62° 60° 60° 59° 59° 58° 58°

Upcoming Week

Day Forecast High Low
Tonight
Mostly Cloudy
Mostly cloudy, with a low around 58. East wind around 8 mph.
82°F 66°F
Friday
Chance Rain Showers
A chance of rain showers after 9am. Cloudy, with a high near 69. Northeast wind 6 to 9 mph. Chance of precipitation is 50%.
82°F 66°F
Friday Night
Chance Rain Showers
A chance of rain showers. Cloudy, with a low around 59. North wind 2 to 7 mph. Chance of precipitation is 40%.
82°F 66°F
Saturday
Chance Rain Showers then Partly Sunny
A chance of rain showers before 7am. Partly sunny, with a high near 79. Northwest wind around 5 mph. Chance of precipitation is 40%.
82°F 66°F
Saturday Night
Chance Rain Showers
A chance of rain showers after 7pm. Mostly cloudy, with a low around 62. East wind 0 to 3 mph. Chance of precipitation is 30%.
82°F 66°F
Sunday
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. Mostly cloudy, with a high near 80. Chance of precipitation is 50%.
82°F 66°F
Sunday Night
Chance Showers And Thunderstorms
A chance of showers and thunderstorms. Mostly cloudy, with a low around 63. Chance of precipitation is 30%.
82°F 66°F
Memorial Day
Chance Showers And Thunderstorms
A slight chance of rain showers 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 82. Chance of precipitation is 30%.
82°F 66°F
Monday Night
Chance Showers And Thunderstorms
A chance of showers and thunderstorms. Mostly cloudy, with a low around 65. Chance of precipitation is 30%.
82°F 66°F
Tuesday
Chance Showers And Thunderstorms
A slight chance of rain showers 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 82. Chance of precipitation is 50%.
82°F 66°F
Tuesday Night
Chance Showers And Thunderstorms then Showers And Thunderstorms Likely
A chance of showers and thunderstorms before 7pm, then showers and thunderstorms likely. Mostly cloudy, with a low around 66. Chance of precipitation is 60%.
82°F 66°F
Wednesday
Chance Showers And Thunderstorms
A chance of showers and thunderstorms before 1pm, then a chance of showers and thunderstorms. Partly sunny, with a high near 84. Chance of precipitation is 50%.
82°F 66°F
Wednesday Night
Chance Showers And Thunderstorms
A chance of showers and thunderstorms. Partly cloudy, with a low around 67. Chance of precipitation is 50%.
82°F 66°F
Thursday
Chance Showers And Thunderstorms
A slight chance of rain showers before 7am, then a chance of showers and thunderstorms. Mostly sunny, with a high near 86. Chance of precipitation is 40%.
82°F 66°F
Data provided by weather.gov