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.

Overcast

77°F

25°C

Humidity 69%
Wind Speed S 16 mph
Barometer 30.01 in
Dewpoint 66°F (19°C)
Visibility 10.00 mi
Heat Index79°F (26°C)
Last update 3 Apr 11:45 am CDT
Extended Forecast for

Maryville IL

  • This Afternoon

    This Afternoon: A 30 percent chance of showers and thunderstorms, mainly between 1pm and 4pm. Mostly sunny, with a high near 79. South wind 10 to 18 mph, with gusts as high as 26 mph.

    High: 79 °F

    Chance
    T-storms

  • Tonight

    Tonight: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 2am. Low around 57. South wind 13 to 16 mph, with gusts as high as 25 mph. Chance of precipitation is 90%.

    Low: 57 °F

    Chance
    T-storms then
    Showers

  • Saturday

    Saturday: Showers and possibly a thunderstorm before 1pm, then a slight chance of showers between 1pm and 2pm. Temperature falling to around 56 by 5pm. West wind 10 to 17 mph, with gusts as high as 26 mph. Chance of precipitation is 80%.

    High: 62 °F⇓

    Showers then
    Chance
    Showers

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 39. Northwest wind 9 to 15 mph, with gusts as high as 25 mph.

    Low: 39 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 58. Northwest wind 8 to 14 mph, with gusts as high as 21 mph.

    High: 58 °F

    Sunny

  • Sunday Night

    Sunday Night: Clear, with a low around 40.

    Low: 40 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 60.

    High: 60 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 34.

    Low: 34 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 54.

    High: 54 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
A 30 percent chance of showers and thunderstorms, mainly between 1pm and 4pm. Mostly sunny, with a high near 79. South wind 10 to 18 mph, with gusts as high as 26 mph.
Tonight
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 2am. Low around 57. South wind 13 to 16 mph, with gusts as high as 25 mph. Chance of precipitation is 90%.
Saturday
Showers and possibly a thunderstorm before 1pm, then a slight chance of showers between 1pm and 2pm. Temperature falling to around 56 by 5pm. West wind 10 to 17 mph, with gusts as high as 26 mph. Chance of precipitation is 80%.
Saturday Night
Mostly clear, with a low around 39. Northwest wind 9 to 15 mph, with gusts as high as 25 mph.
Sunday
Sunny, with a high near 58. Northwest wind 8 to 14 mph, with gusts as high as 21 mph.
Sunday Night
Clear, with a low around 40.
Monday
Sunny, with a high near 60.
Monday Night
Partly cloudy, with a low around 34.
Tuesday
Mostly sunny, with a high near 54.
Tuesday Night
Partly cloudy, with a low around 39.
Wednesday
Partly sunny, with a high near 69.
Wednesday Night
Partly cloudy, with a low around 52.
Thursday
A 20 percent chance of showers. Mostly sunny, with a high near 75.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Maryville IL
 38.72°N 89.94°W (Elev. 554 ft)
Last Update:
11:51 am CDT Apr 3, 2026
Forecast Valid:
12pm CDT Apr 3, 2026-6pm CDT Apr 9, 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