Current conditions at

St. Louis Downtown Airport (KCPS)

Lat: 38.56°NLon: 90.15°WElev: 410ft.

Overcast

35°F

2°C

Humidity 64%
Wind Speed NE 7 mph
Barometer 30.02 in (1016.7 mb)
Dewpoint 24°F (-4°C)
Visibility 10.00 mi
Wind Chill29°F (-2°C)
Last update 11 Feb 10:53 pm CST
Extended Forecast for

O'Fallon IL

Winter Weather Advisory February 12, 03:00am until February 12, 09:00pm
Click here for hazard details and duration
Winter Weather Advisory
  • Tonight

    Tonight: Cloudy, with a low around 30. Northeast wind around 9 mph.

    Low: 30 °F

    Cloudy

  • Wednesday

    Wednesday: Rain or freezing rain before 3pm, then rain, possibly mixed with snow between 3pm and 5pm, then snow after 5pm.  High near 33. Northeast wind 6 to 9 mph becoming north in the afternoon.  Chance of precipitation is 100%. New ice accumulation of less than a 0.1 of an inch possible.  New snow accumulation of less than a half inch possible.

    High: 33 °F

    Wintry Mix

  • Wednesday Night

    Wednesday Night: A chance of rain, snow, and sleet before 10pm, then a slight chance of snow between 10pm and midnight.  Cloudy, with a low around 19. Northwest wind 7 to 15 mph, with gusts as high as 23 mph.  Chance of precipitation is 40%.

    Low: 19 °F

    Chance Wintry
    Mix then
    Cloudy

  • Thursday

    Thursday: Mostly cloudy, then gradually becoming sunny, with a high near 27. Northwest wind 5 to 14 mph, with gusts as high as 21 mph.

    High: 27 °F

    Decreasing
    Clouds

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 13. Light and variable wind.

    Low: 13 °F

    Mostly Clear

  • Friday

    Friday: Partly sunny, with a high near 38.

    High: 38 °F

    Partly Sunny

  • Friday Night

    Friday Night: Rain, mainly after midnight.  Low around 35. Chance of precipitation is 80%.

    Low: 35 °F

    Chance Rain
    then Rain

  • Saturday

    Saturday: Rain.  High near 44. Chance of precipitation is 80%.

    High: 44 °F

    Rain

  • Saturday Night

    Saturday Night: Rain and snow before midnight, then a chance of snow.  Low around 20. Chance of precipitation is 80%.

    Low: 20 °F

    Rain/Snow
    then Chance
    Snow

Detailed Forecast

Tonight
Cloudy, with a low around 30. Northeast wind around 9 mph.
Wednesday
Rain or freezing rain before 3pm, then rain, possibly mixed with snow between 3pm and 5pm, then snow after 5pm. High near 33. Northeast wind 6 to 9 mph becoming north in the afternoon. Chance of precipitation is 100%. New ice accumulation of less than a 0.1 of an inch possible. New snow accumulation of less than a half inch possible.
Wednesday Night
A chance of rain, snow, and sleet before 10pm, then a slight chance of snow between 10pm and midnight. Cloudy, with a low around 19. Northwest wind 7 to 15 mph, with gusts as high as 23 mph. Chance of precipitation is 40%.
Thursday
Mostly cloudy, then gradually becoming sunny, with a high near 27. Northwest wind 5 to 14 mph, with gusts as high as 21 mph.
Thursday Night
Mostly clear, with a low around 13. Light and variable wind.
Friday
Partly sunny, with a high near 38.
Friday Night
Rain, mainly after midnight. Low around 35. Chance of precipitation is 80%.
Saturday
Rain. High near 44. Chance of precipitation is 80%.
Saturday Night
Rain and snow before midnight, then a chance of snow. Low around 20. Chance of precipitation is 80%.
Sunday
Partly sunny, with a high near 25.
Sunday Night
Partly cloudy, with a low around 9.
Washington's Birthday
Partly sunny, with a high near 29.
Monday Night
A 20 percent chance of snow. Mostly cloudy, with a low around 21.
Tuesday
A 30 percent chance of snow. Mostly cloudy, with a high near 37.
Click Map For Forecast

ABOUT THIS FORECAST

 
Point Forecast:
O'Fallon IL
 38.59°N 89.92°W (Elev. 551 ft)
4:16 pm CST Feb 11, 2025
11pm CST Feb 11, 2025-6pm CST Feb 18, 2025
 
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Additional Resources

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