Current conditions at

St. Louis Regional Airport (KALN)

Lat: 38.89°NLon: 90.03°WElev: 518ft.

Fair

39°F

4°C

Humidity 86%
Wind Speed Calm
Barometer 30.05 in
Dewpoint 36°F (2°C)
Visibility 10.00 mi
Last update 19 Mar 6:15 am CDT
Extended Forecast for

Maryville IL

  • Today

    Today: Partly sunny, then gradually becoming sunny, with a high near 74. Calm wind becoming south 5 to 7 mph in the morning.

    High: 74 °F

    Becoming
    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 50. South wind around 6 mph.

    Low: 50 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 81. Southwest wind 6 to 11 mph becoming west in the afternoon.

    High: 81 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 52. West wind around 6 mph becoming light and variable  after midnight.

    Low: 52 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 79. Calm wind becoming southwest around 6 mph in the afternoon.

    High: 79 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 58.

    Low: 58 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 84.

    High: 84 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 41.

    Low: 41 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 55.

    High: 55 °F

    Sunny

Detailed Forecast

Today
Partly sunny, then gradually becoming sunny, with a high near 74. Calm wind becoming south 5 to 7 mph in the morning.
Tonight
Mostly clear, with a low around 50. South wind around 6 mph.
Friday
Sunny, with a high near 81. Southwest wind 6 to 11 mph becoming west in the afternoon.
Friday Night
Partly cloudy, with a low around 52. West wind around 6 mph becoming light and variable after midnight.
Saturday
Sunny, with a high near 79. Calm wind becoming southwest around 6 mph in the afternoon.
Saturday Night
Mostly clear, with a low around 58.
Sunday
Mostly sunny, with a high near 84.
Sunday Night
Partly cloudy, with a low around 41.
Monday
Sunny, with a high near 55.
Monday Night
Partly cloudy, with a low around 36.
Tuesday
Partly sunny, with a high near 58.
Tuesday Night
Mostly cloudy, with a low around 40.
Wednesday
Mostly sunny, with a high near 69.
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ABOUT THIS FORECAST

 
Point Forecast:
Maryville IL
 38.72°N 89.97°W (Elev. 558 ft)
5:41 am CDT Mar 19, 2026
6am CDT Mar 19, 2026-6pm CDT Mar 25, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database