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

41°F

5°C

Humidity 61%
Wind Speed NW 10 mph
Barometer 30.33 in
Dewpoint 28°F (-2°C)
Visibility 10.00 mi
Wind Chill35°F (2°C)
Last update 12 Mar 9:50 am CDT
Extended Forecast for

Maryville IL

  • Today

    Today: Sunny, with a high near 55. West wind 8 to 11 mph becoming southwest in the afternoon.

    High: 55 °F

    Sunny

  • Tonight

    Tonight: Increasing clouds, with a low around 44. Breezy, with a south wind 11 to 20 mph, with gusts as high as 37 mph.

    Low: 44 °F

    Mostly Clear
    then Partly
    Cloudy and
    Breezy

  • Friday

    Friday: Partly sunny, with a high near 60. West wind 16 to 18 mph, with gusts as high as 31 mph.

    High: 60 °F

    Partly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 37. Northwest wind 5 to 8 mph becoming east after midnight.

    Low: 37 °F

    Partly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 62. Southeast wind 7 to 13 mph.

    High: 62 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 53.

    Low: 53 °F

    Mostly Cloudy

  • Sunday

    Sunday: Rain and possibly a thunderstorm. High near 66. Breezy. Chance of precipitation is 80%.

    High: 66 °F

    Rain and
    Breezy

  • Sunday Night

    Sunday Night: Rain likely, possibly mixed with snow before 1am, then a chance of snow. Some thunder is also possible. Mostly cloudy, with a low around 23. Breezy. Chance of precipitation is 60%.

    Low: 23 °F

    Rain/Snow
    Likely and
    Breezy

  • Monday

    Monday: Mostly sunny, with a high near 32. Breezy.

    High: 32 °F

    Mostly Sunny
    and Breezy

Detailed Forecast

Today
Sunny, with a high near 55. West wind 8 to 11 mph becoming southwest in the afternoon.
Tonight
Increasing clouds, with a low around 44. Breezy, with a south wind 11 to 20 mph, with gusts as high as 37 mph.
Friday
Partly sunny, with a high near 60. West wind 16 to 18 mph, with gusts as high as 31 mph.
Friday Night
Partly cloudy, with a low around 37. Northwest wind 5 to 8 mph becoming east after midnight.
Saturday
Partly sunny, with a high near 62. Southeast wind 7 to 13 mph.
Saturday Night
Mostly cloudy, with a low around 53.
Sunday
Rain and possibly a thunderstorm. High near 66. Breezy. Chance of precipitation is 80%.
Sunday Night
Rain likely, possibly mixed with snow before 1am, then a chance of snow. Some thunder is also possible. Mostly cloudy, with a low around 23. Breezy. Chance of precipitation is 60%.
Monday
Mostly sunny, with a high near 32. Breezy.
Monday Night
Mostly clear, with a low around 16.
Tuesday
Partly sunny, with a high near 39.
Tuesday Night
A slight chance of rain and snow. Mostly cloudy, with a low around 30. Chance of precipitation is 20%.
Wednesday
Mostly cloudy, with a high near 57.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Maryville IL
 38.72°N 89.97°W (Elev. 558 ft)
Last Update:
5:56 am CDT Mar 12, 2026
Forecast Valid:
10am CDT Mar 12, 2026-6pm CDT Mar 18, 2026
 
Forecast Discussion
 
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Additional Resources

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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