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Current Weather Conditions for O Fallon, IL

Mostly cloudy. High near 39, with temperatures falling to around 34 in the afternoon. Southeast wind around 5 mph.
34°F

Conditions

Wind: 5 mph SE
Humidity: 49%
Probability of Precipitation: 0%

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
34° 33° 32° 32° 32° 32° 32° 31° 31° 32° 32° 32° 31°

Upcoming Week

Day Forecast High Low
This Afternoon
Mostly Cloudy
Mostly cloudy. High near 39, with temperatures falling to around 34 in the afternoon. Southeast wind around 5 mph.
34°F 21°F
Tonight
Light Snow
Snow after 11pm. Cloudy, with a low around 30. Southeast wind 5 to 12 mph, with gusts as high as 24 mph. Chance of precipitation is 90%. New snow accumulation of less than one inch possible.
34°F 21°F
Saturday
Snow then Rain And Snow
Snow before 10am, then snow and a slight chance of sleet between 10am and 11am, then sleet and rain and snow between 11am and noon, then rain and snow. Cloudy, with a high near 38. South wind 13 to 18 mph, with gusts as high as 33 mph. Chance of precipitation is 100%. New snow accumulation of 1 to 3 inches possible.
34°F 21°F
Saturday Night
Slight Chance Rain And Snow then Cloudy
Rain likely before 9pm, then a slight chance of rain and snow between 9pm and midnight. Cloudy, with a low around 25. Southwest wind around 18 mph, with gusts as high as 33 mph. Chance of precipitation is 60%.
34°F 21°F
Sunday
Mostly Cloudy
Mostly cloudy, with a high near 30. Northwest wind 10 to 18 mph.
34°F 21°F
Sunday Night
Mostly Cloudy
Mostly cloudy, with a low around 20.
34°F 21°F
Monday
Cloudy then Chance Light Snow
A chance of snow after noon. Cloudy, with a high near 30. Chance of precipitation is 30%.
34°F 21°F
Monday Night
Chance Light Snow
A chance of snow. Mostly cloudy, with a low around 20. Chance of precipitation is 50%. New snow accumulation of less than half an inch possible.
34°F 21°F
Tuesday
Partly Sunny
Partly sunny, with a high near 30.
34°F 21°F
Tuesday Night
Partly Cloudy
Partly cloudy, with a low around 18.
34°F 21°F
Wednesday
Partly Sunny
Partly sunny, with a high near 39.
34°F 21°F
Wednesday Night
Mostly Cloudy
Mostly cloudy, with a low around 20.
34°F 21°F
Thursday
Partly Sunny
Partly sunny, with a high near 31.
34°F 21°F
Thursday Night
Mostly Cloudy
Mostly cloudy, with a low around 20.
34°F 21°F
Data provided by weather.gov