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

24°F

-4°C

Humidity 51%
Wind Speed NW 7 mph
Barometer 30.12 in
Dewpoint 8°F (-13°C)
Visibility 10.00 mi
Wind Chill16°F (-9°C)
Last update 15 Jan 12:15 am CST
Extended Forecast for

Maryville IL

  • Overnight

    Overnight: Clear, with a low around 17. Northwest wind 7 to 10 mph.

    Low: 17 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 34. Northwest wind 6 to 8 mph becoming south in the afternoon.

    High: 34 °F

    Sunny

  • Thursday Night

    Thursday Night: A chance of snow between 9pm and midnight. Mostly cloudy, with a low around 28. South wind 6 to 10 mph becoming west after midnight. Chance of precipitation is 30%.

    Low: 28 °F

    Chance Snow
    then Mostly
    Cloudy

  • Friday

    Friday: Mostly cloudy, with a high near 44. West wind 11 to 18 mph, with gusts as high as 26 mph.

    High: 44 °F

    Mostly Cloudy

  • Friday Night

    Friday Night: A 20 percent chance of snow showers. Mostly cloudy, with a low around 21. West wind 11 to 15 mph, with gusts as high as 23 mph.

    Low: 21 °F

    Slight Chance
    Snow Showers

  • Saturday

    Saturday: Partly sunny, with a high near 26.

    High: 26 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 9.

    Low: 9 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 24.

    High: 24 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 15.

    Low: 15 °F

    Partly Cloudy

Detailed Forecast

Overnight
Clear, with a low around 17. Northwest wind 7 to 10 mph.
Thursday
Sunny, with a high near 34. Northwest wind 6 to 8 mph becoming south in the afternoon.
Thursday Night
A chance of snow between 9pm and midnight. Mostly cloudy, with a low around 28. South wind 6 to 10 mph becoming west after midnight. Chance of precipitation is 30%.
Friday
Mostly cloudy, with a high near 44. West wind 11 to 18 mph, with gusts as high as 26 mph.
Friday Night
A 20 percent chance of snow showers. Mostly cloudy, with a low around 21. West wind 11 to 15 mph, with gusts as high as 23 mph.
Saturday
Partly sunny, with a high near 26.
Saturday Night
Partly cloudy, with a low around 9.
Sunday
Mostly sunny, with a high near 24.
Sunday Night
Partly cloudy, with a low around 15.
M.L.King Day
Mostly sunny, with a high near 26.
Monday Night
Mostly clear, with a low around 10.
Tuesday
Sunny, with a high near 32.
Tuesday Night
Mostly clear, with a low around 20.
Wednesday
Mostly sunny, with a high near 41.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Maryville IL
 38.75°N 89.97°W (Elev. 499 ft)
Last Update:
12:21 am CST Jan 15, 2026
Forecast Valid:
12am CST Jan 15, 2026-6pm CST Jan 21, 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