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Current Weather Conditions for O Fallon, IL

Mostly cloudy, with a high near 67. Northeast wind around 8 mph.
67°F

Conditions

Wind: 8 mph NE
Humidity: 65%
Probability of Precipitation: 3%

Hourly Forcast (next 12 hours)

10 PM 11 PM 12 AM 1 AM 2 AM 3 AM 4 AM 5 AM 6 AM 7 AM 8 AM 9 AM 10 AM
67° 67° 65° 63° 62° 61° 60° 59° 58° 57° 57° 55° 55°

Upcoming Week

Day Forecast High Low
This Afternoon
Mostly Cloudy
Mostly cloudy, with a high near 67. Northeast wind around 8 mph.
81°F 67°F
Tonight
Mostly Cloudy
Mostly cloudy, with a low around 54. Northeast wind 3 to 8 mph.
81°F 67°F
Thursday
Partly Sunny
Partly sunny, with a high near 71. Northeast wind around 9 mph.
81°F 67°F
Thursday Night
Mostly Cloudy then Slight Chance Rain Showers
A slight chance of rain showers after 4am. Mostly cloudy, with a low around 58. East wind around 9 mph. Chance of precipitation is 20%.
81°F 67°F
Friday
Rain Showers
Rain showers. Cloudy, with a high near 73. East wind around 10 mph. Chance of precipitation is 90%.
81°F 67°F
Friday Night
Rain Showers
Rain showers before 1am. Mostly cloudy, with a low around 60. Chance of precipitation is 90%.
81°F 67°F
Saturday
Partly Sunny then Slight Chance Showers And Thunderstorms
A slight chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 80. Chance of precipitation is 20%.
81°F 67°F
Saturday Night
Chance Showers And Thunderstorms
A chance of showers and thunderstorms. Mostly cloudy, with a low around 62. Chance of precipitation is 40%.
81°F 67°F
Sunday
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 80. Chance of precipitation is 40%.
81°F 67°F
Sunday 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 62. Chance of precipitation is 40%.
81°F 67°F
Memorial Day
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 81. Chance of precipitation is 40%.
81°F 67°F
Monday 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 40%.
81°F 67°F
Tuesday
Chance Rain Showers then Chance Showers And Thunderstorms
A chance of rain showers before 1pm, then a chance of showers and thunderstorms. Partly sunny, with a high near 83. Chance of precipitation is 40%.
81°F 67°F
Tuesday Night
Chance Showers And Thunderstorms
A chance of showers and thunderstorms before 1am, then a chance of showers and thunderstorms. Mostly cloudy, with a low around 67. Chance of precipitation is 40%.
81°F 67°F
Data provided by weather.gov