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

48°F

9°C

Humidity 88%
Wind Speed Calm
Barometer 30.35 in
Dewpoint 45°F (7°C)
Visibility 10.00 mi
Last update 11 Apr 3:55 am CDT
Extended Forecast for

Maryville IL

  • Today

    Today: A 20 percent chance of showers after 3pm. Mostly sunny, with a high near 72. East wind 7 to 9 mph.

    High: 72 °F

    Mostly Sunny
    then Slight
    Chance
    Showers

  • Tonight

    Tonight: A 20 percent chance of showers before 8pm. Partly cloudy, with a low around 61. Southeast wind around 9 mph.

    Low: 61 °F

    Slight Chance
    Showers then
    Partly Cloudy

  • Sunday

    Sunday: A 20 percent chance of showers after 1pm. Increasing clouds, with a high near 80. Breezy, with a south wind 9 to 14 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 31 mph.

    High: 80 °F

    Mostly Sunny
    then Slight
    Chance
    Showers and
    Breezy

  • Sunday Night

    Sunday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 67. Southwest wind 14 to 17 mph, with gusts as high as 25 mph. Chance of precipitation is 60%.

    Low: 67 °F

    Chance
    T-storms then
    Showers
    Likely

  • Monday

    Monday: A chance of showers, with thunderstorms also possible after 10am. Mostly sunny, with a high near 84. South wind 11 to 17 mph, with gusts as high as 25 mph. Chance of precipitation is 30%.

    High: 84 °F

    Chance
    Showers

  • Monday Night

    Monday Night: Partly cloudy, with a low around 69.

    Low: 69 °F

    Partly Cloudy

  • Tuesday

    Tuesday: A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 87.

    High: 87 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 70.

    Low: 70 °F

    Chance
    T-storms

  • Wednesday

    Wednesday: Showers likely and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 84. Chance of precipitation is 60%.

    High: 84 °F

    Showers
    Likely

Detailed Forecast

Today
A 20 percent chance of showers after 3pm. Mostly sunny, with a high near 72. East wind 7 to 9 mph.
Tonight
A 20 percent chance of showers before 8pm. Partly cloudy, with a low around 61. Southeast wind around 9 mph.
Sunday
A 20 percent chance of showers after 1pm. Increasing clouds, with a high near 80. Breezy, with a south wind 9 to 14 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 31 mph.
Sunday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 67. Southwest wind 14 to 17 mph, with gusts as high as 25 mph. Chance of precipitation is 60%.
Monday
A chance of showers, with thunderstorms also possible after 10am. Mostly sunny, with a high near 84. South wind 11 to 17 mph, with gusts as high as 25 mph. Chance of precipitation is 30%.
Monday Night
Partly cloudy, with a low around 69.
Tuesday
A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 87.
Tuesday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 70.
Wednesday
Showers likely and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 84. Chance of precipitation is 60%.
Wednesday Night
A chance of showers and thunderstorms, then showers likely after 1am. Mostly cloudy, with a low around 65. Chance of precipitation is 60%.
Thursday
Showers and thunderstorms likely. Mostly cloudy, with a high near 78. Chance of precipitation is 60%.
Thursday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 62.
Friday
A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 83.
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ABOUT THIS FORECAST

 
Point Forecast:
Maryville IL
 38.72°N 89.97°W (Elev. 558 ft)
Last Update:
4:06 am CDT Apr 11, 2026
Forecast Valid:
4am CDT Apr 11, 2026-6pm CDT Apr 17, 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