National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

St. Louis Regional Airport (KALN)

Lat: 38.89°NLon: 90.03°WElev: 518ft.

Fair

54°F

12°C

Humidity 33%
Wind Speed Vrbl 5 mph
Barometer 30.16 in
Dewpoint 25°F (-4°C)
Visibility 10.00 mi
Wind Chill53°F (12°C)
Last update 12 Jan 4:50 pm CST
Extended Forecast for

3 Miles N Chesterfield IL

  • Tonight

    Tonight: Mostly cloudy during the early evening, then clearing, with a low around 35. South wind 7 to 10 mph, with gusts as high as 21 mph.

    Low: 35 °F

    Clearing

  • Tuesday

    Tuesday: Increasing clouds, with a high near 57. West wind 9 to 15 mph, with gusts as high as 29 mph.

    High: 57 °F

    Increasing
    Clouds

  • Tuesday Night

    Tuesday Night: A 20 percent chance of rain before 11pm. Cloudy, then gradually becoming partly cloudy, with a low around 33. West wind 9 to 15 mph, with gusts as high as 25 mph.

    Low: 33 °F

    Slight Chance
    Rain then
    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly cloudy, with a temperature rising to near 38 by 11am, then falling to around 30 during the remainder of the day. Breezy, with a northwest wind 16 to 24 mph, with gusts as high as 34 mph.

    High: 38 °F⇓

    Mostly Cloudy
    and Breezy

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 15. North wind 9 to 17 mph, with gusts as high as 26 mph.

    Low: 15 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 29.

    High: 29 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: A 30 percent chance of snow, mainly before midnight. Mostly cloudy, with a low around 22.

    Low: 22 °F

    Chance Snow

  • Friday

    Friday: A 30 percent chance of snow after noon. Mostly cloudy, with a high near 40.

    High: 40 °F

    Mostly Cloudy
    then Chance
    Snow

  • Friday Night

    Friday Night: A 20 percent chance of snow before midnight. Mostly cloudy, with a low around 15.

    Low: 15 °F

    Slight Chance
    Snow then
    Mostly Cloudy

Detailed Forecast

Tonight
Mostly cloudy during the early evening, then clearing, with a low around 35. South wind 7 to 10 mph, with gusts as high as 21 mph.
Tuesday
Increasing clouds, with a high near 57. West wind 9 to 15 mph, with gusts as high as 29 mph.
Tuesday Night
A 20 percent chance of rain before 11pm. Cloudy, then gradually becoming partly cloudy, with a low around 33. West wind 9 to 15 mph, with gusts as high as 25 mph.
Wednesday
Mostly cloudy, with a temperature rising to near 38 by 11am, then falling to around 30 during the remainder of the day. Breezy, with a northwest wind 16 to 24 mph, with gusts as high as 34 mph.
Wednesday Night
Mostly clear, with a low around 15. North wind 9 to 17 mph, with gusts as high as 26 mph.
Thursday
Mostly sunny, with a high near 29.
Thursday Night
A 30 percent chance of snow, mainly before midnight. Mostly cloudy, with a low around 22.
Friday
A 30 percent chance of snow after noon. Mostly cloudy, with a high near 40.
Friday Night
A 20 percent chance of snow before midnight. Mostly cloudy, with a low around 15.
Saturday
Mostly cloudy, with a high near 24.
Saturday Night
Mostly cloudy, with a low around 6.
Sunday
Mostly sunny, with a high near 23.
Sunday Night
Partly cloudy, with a low around 9.
M.L.King Day
Mostly sunny, with a high near 32.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles N Chesterfield IL
 39.3°N 90.09°W (Elev. 515 ft)
Last Update:
4:46 pm CST Jan 12, 2026
Forecast Valid:
4pm CST Jan 12, 2026-6pm CST Jan 19, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation