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

63°F

17°C

Humidity 88%
Wind Speed SW 12 mph
Barometer 29.91 in
Dewpoint 59°F (15°C)
Visibility 10.00 mi
Last update 16 Apr 8:45 am CDT
Extended Forecast for

Maryville IL

  • Today

    Today: Sunny, with a high near 82. Southwest wind 8 to 10 mph.

    High: 82 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 61. South wind around 6 mph.

    Low: 61 °F

    Mostly Clear

  • Friday

    Friday: A 50 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 85. South wind 6 to 11 mph increasing to 12 to 17 mph in the afternoon. Winds could gust as high as 25 mph.

    High: 85 °F

    Mostly Sunny
    then Chance
    T-storms

  • Friday Night

    Friday Night: Showers and thunderstorms, mainly before 4am, then showers and possibly a thunderstorm after 4am. Low around 51. South wind 13 to 15 mph becoming west after midnight. Winds could gust as high as 23 mph. Chance of precipitation is 90%.

    Low: 51 °F

    T-storms
    Likely then
    T-storms

  • Saturday

    Saturday: A chance of showers and thunderstorms. Partly sunny, with a steady temperature around 56. Northwest wind 14 to 16 mph, with gusts as high as 24 mph. Chance of precipitation is 50%.

    High: 56 °F

    Chance
    T-storms then
    Chance
    Showers

  • Saturday Night

    Saturday Night: A 20 percent chance of showers before 1am. Mostly clear, with a low around 41.

    Low: 41 °F

    Slight Chance
    Showers

  • Sunday

    Sunday: Sunny, with a high near 64.

    High: 64 °F

    Sunny

  • Sunday Night

    Sunday Night: Clear, with a low around 42.

    Low: 42 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 71.

    High: 71 °F

    Sunny

Detailed Forecast

Today
Sunny, with a high near 82. Southwest wind 8 to 10 mph.
Tonight
Mostly clear, with a low around 61. South wind around 6 mph.
Friday
A 50 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 85. South wind 6 to 11 mph increasing to 12 to 17 mph in the afternoon. Winds could gust as high as 25 mph.
Friday Night
Showers and thunderstorms, mainly before 4am, then showers and possibly a thunderstorm after 4am. Low around 51. South wind 13 to 15 mph becoming west after midnight. Winds could gust as high as 23 mph. Chance of precipitation is 90%.
Saturday
A chance of showers and thunderstorms. Partly sunny, with a steady temperature around 56. Northwest wind 14 to 16 mph, with gusts as high as 24 mph. Chance of precipitation is 50%.
Saturday Night
A 20 percent chance of showers before 1am. Mostly clear, with a low around 41.
Sunday
Sunny, with a high near 64.
Sunday Night
Clear, with a low around 42.
Monday
Sunny, with a high near 71.
Monday Night
Mostly clear, with a low around 53.
Tuesday
Mostly sunny, with a high near 75.
Tuesday Night
A 20 percent chance of showers. Mostly clear, with a low around 55.
Wednesday
A 20 percent chance of showers and thunderstorms. Sunny, with a high near 78.
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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:
9:01 am CDT Apr 16, 2026
Forecast Valid:
9am CDT Apr 16, 2026-6pm CDT Apr 22, 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