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

53°F

12°C

Humidity 83%
Wind Speed Calm
Barometer 30.03 in
Dewpoint 48°F (9°C)
Visibility 10.00 mi
Last update 8 Oct 3:15 am CDT
Extended Forecast for

Maryville IL

  • Overnight

    Overnight: Clear, with a low around 57. Calm wind.

    Low: 57 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 86. Light north wind.

    High: 86 °F

    Sunny

  • Thursday Night

    Thursday Night: Clear, with a low around 57. Light and variable wind becoming east around 5 mph after midnight.

    Low: 57 °F

    Clear

  • Friday

    Friday: Sunny, with a high near 90. South wind 5 to 9 mph.

    High: 90 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 61. South wind 6 to 8 mph.

    Low: 61 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 85.

    High: 85 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Showers likely. Mostly cloudy, with a low around 60. Chance of precipitation is 60%.

    Low: 60 °F

    Showers
    Likely

  • Sunday

    Sunday: A 20 percent chance of showers before 1pm. Partly sunny, with a high near 78.

    High: 78 °F

    Slight Chance
    Showers

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 59.

    Low: 59 °F

    Mostly Clear

Detailed Forecast

Overnight
Clear, with a low around 57. Calm wind.
Thursday
Sunny, with a high near 86. Light north wind.
Thursday Night
Clear, with a low around 57. Light and variable wind becoming east around 5 mph after midnight.
Friday
Sunny, with a high near 90. South wind 5 to 9 mph.
Friday Night
Mostly clear, with a low around 61. South wind 6 to 8 mph.
Saturday
Mostly sunny, with a high near 85.
Saturday Night
Showers likely. Mostly cloudy, with a low around 60. Chance of precipitation is 60%.
Sunday
A 20 percent chance of showers before 1pm. Partly sunny, with a high near 78.
Sunday Night
Mostly clear, with a low around 59.
Columbus Day
Sunny, with a high near 90.
Monday Night
Mostly clear, with a low around 62.
Tuesday
A 20 percent chance of showers. Sunny, with a high near 79.
Tuesday Night
Mostly clear, with a low around 53.
Wednesday
Sunny, with a high near 76.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Maryville IL
 38.72°N 89.97°W (Elev. 558 ft)
Last Update:
2:16 am CDT Oct 8, 2026
Forecast Valid:
3am CDT Oct 8, 2026-6pm CDT Oct 14, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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