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.

Overcast

46°F

8°C

Humidity 76%
Wind Speed NW 15 mph
Barometer 29.98 in
Dewpoint 39°F (4°C)
Visibility 10.00 mi
Wind Chill40°F (4°C)
Last update 9 Jan 7:50 am CST
Extended Forecast for

3 Miles NNE Chesterfield IL

  • Today

    Today: Mostly cloudy, with a high near 48. West wind 11 to 16 mph becoming north 5 to 10 mph in the afternoon. Winds could gust as high as 24 mph.

    High: 48 °F

    Mostly Cloudy

  • Tonight

    Tonight: A 40 percent chance of rain, mainly after 4am. Increasing clouds, with a low around 34. Light and variable wind becoming northwest 5 to 7 mph after midnight.

    Low: 34 °F

    Partly Cloudy
    then Chance
    Rain

  • Saturday

    Saturday: A 30 percent chance of rain, mainly before 7am. Cloudy through mid morning, then gradual clearing, with a high near 45. West wind 8 to 16 mph, with gusts as high as 24 mph.

    High: 45 °F

    Chance Rain
    then Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 21. West wind 14 to 16 mph, with gusts as high as 25 mph.

    Low: 21 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 35. Northwest wind 6 to 16 mph, with gusts as high as 25 mph.

    High: 35 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 23.

    Low: 23 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 49.

    High: 49 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 35.

    Low: 35 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 53.

    High: 53 °F

    Mostly Cloudy

Detailed Forecast

Today
Mostly cloudy, with a high near 48. West wind 11 to 16 mph becoming north 5 to 10 mph in the afternoon. Winds could gust as high as 24 mph.
Tonight
A 40 percent chance of rain, mainly after 4am. Increasing clouds, with a low around 34. Light and variable wind becoming northwest 5 to 7 mph after midnight.
Saturday
A 30 percent chance of rain, mainly before 7am. Cloudy through mid morning, then gradual clearing, with a high near 45. West wind 8 to 16 mph, with gusts as high as 24 mph.
Saturday Night
Partly cloudy, with a low around 21. West wind 14 to 16 mph, with gusts as high as 25 mph.
Sunday
Sunny, with a high near 35. Northwest wind 6 to 16 mph, with gusts as high as 25 mph.
Sunday Night
Mostly clear, with a low around 23.
Monday
Sunny, with a high near 49.
Monday Night
Partly cloudy, with a low around 35.
Tuesday
Mostly cloudy, with a high near 53.
Tuesday Night
A 20 percent chance of rain before midnight. Mostly cloudy, with a low around 33.
Wednesday
A slight chance of rain and snow. Mostly cloudy, with a high near 40. Chance of precipitation is 20%.
Wednesday Night
Mostly cloudy, with a low around 22.
Thursday
Mostly sunny, with a high near 36.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles NNE Chesterfield IL
 39.3°N 90.06°W (Elev. 558 ft)
Last Update:
6:21 am CST Jan 9, 2026
Forecast Valid:
7am CST Jan 9, 2026-6pm CST Jan 15, 2026
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation