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

Hazardous Weather Conditions

Current conditions at

St. Louis Regional Airport (KALN)

Lat: 38.89°NLon: 90.03°WElev: 518ft.

Fair

1°F

-17°C

Humidity 78%
Wind Speed S 5 mph
Barometer 30.40 in
Dewpoint -4°F (-20°C)
Visibility 10.00 mi
Wind Chill-9°F (-23°C)
Last update 1 Feb 6:45 am CST
Extended Forecast for

Maryville IL

  • Today

    Today: A 40 percent chance of snow, mainly after 3pm. Increasing clouds, with a high near 27. Light south wind increasing to 6 to 11 mph in the morning.

    High: 27 °F

    Partly Sunny
    then Chance
    Snow

  • Tonight

    Tonight: A 40 percent chance of snow, mainly before 8pm. Cloudy, then gradually becoming partly cloudy, with a low around 16. South wind 5 to 8 mph becoming light and variable after midnight.

    Low: 16 °F

    Chance Snow
    then Mostly
    Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 36. West wind 5 to 7 mph becoming light and variable in the afternoon.

    High: 36 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 25. Calm wind becoming east around 5 mph after midnight.

    Low: 25 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 34. Northeast wind 5 to 8 mph becoming north in the afternoon.

    High: 34 °F

    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 16.

    Low: 16 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 29.

    High: 29 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 12.

    Low: 12 °F

    Mostly Clear

  • Thursday

    Thursday: Partly sunny, with a high near 37.

    High: 37 °F

    Partly Sunny

Detailed Forecast

Today
A 40 percent chance of snow, mainly after 3pm. Increasing clouds, with a high near 27. Light south wind increasing to 6 to 11 mph in the morning.
Tonight
A 40 percent chance of snow, mainly before 8pm. Cloudy, then gradually becoming partly cloudy, with a low around 16. South wind 5 to 8 mph becoming light and variable after midnight.
Monday
Mostly sunny, with a high near 36. West wind 5 to 7 mph becoming light and variable in the afternoon.
Monday Night
Mostly cloudy, with a low around 25. Calm wind becoming east around 5 mph after midnight.
Tuesday
Mostly cloudy, with a high near 34. Northeast wind 5 to 8 mph becoming north in the afternoon.
Tuesday Night
Mostly cloudy, with a low around 16.
Wednesday
Mostly sunny, with a high near 29.
Wednesday Night
Mostly clear, with a low around 12.
Thursday
Partly sunny, with a high near 37.
Thursday Night
Partly cloudy, with a low around 30.
Friday
Mostly sunny, with a high near 45.
Friday Night
Partly cloudy, with a low around 21.
Saturday
Mostly sunny, with a high near 32.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Maryville IL
 38.72°N 89.94°W (Elev. 554 ft)
Last Update:
6:46 am CST Feb 1, 2026
Forecast Valid:
7am CST Feb 1, 2026-6pm CST Feb 7, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation