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

67°F

19°C

Humidity 69%
Wind Speed S 13 mph
Barometer 29.90 in
Dewpoint 56°F (13°C)
Visibility 10.00 mi
Last update 31 Mar 6:15 am CDT
Extended Forecast for

Maryville IL

  • Today

    Today: A chance of rain and thunderstorms before 2pm, then a slight chance of rain and thunderstorms after 4pm. Partly sunny, with a high near 84. Breezy, with a southwest wind 13 to 21 mph, with gusts as high as 31 mph. Chance of precipitation is 30%.

    High: 84 °F

    Breezy.
    Chance
    T-storms then
    Mostly Cloudy

  • Tonight

    Tonight: A chance of rain and thunderstorms, then rain likely after 1am. Mostly cloudy, with a low around 60. South wind 6 to 11 mph, with gusts as high as 21 mph. Chance of precipitation is 70%.

    Low: 60 °F

    Chance
    T-storms then
    Rain Likely

  • Wednesday

    Wednesday: Rain and possibly a thunderstorm. High near 74. South wind 5 to 11 mph. Chance of precipitation is 80%.

    High: 74 °F

    Rain

  • Wednesday Night

    Wednesday Night: A chance of rain, with thunderstorms also possible after 1am. Mostly cloudy, with a low around 64. Southeast wind 11 to 15 mph, with gusts as high as 24 mph. Chance of precipitation is 40%.

    Low: 64 °F

    Chance Rain
    then Chance
    T-storms

  • Thursday

    Thursday: Rain and possibly a thunderstorm. High near 77. Breezy, with a south wind 17 to 23 mph, with gusts as high as 34 mph. Chance of precipitation is 80%.

    High: 77 °F

    Rain and
    Breezy

  • Thursday Night

    Thursday Night: Rain likely and possibly a thunderstorm. Mostly cloudy, with a low around 60. Chance of precipitation is 70%.

    Low: 60 °F

    Rain Likely

  • Friday

    Friday: A chance of rain, with thunderstorms also possible after 1pm. Partly sunny, with a high near 80. Chance of precipitation is 50%.

    High: 80 °F

    Chance Rain
    then Chance
    T-storms

  • Friday Night

    Friday Night: A chance of rain and thunderstorms, then rain likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 60. Chance of precipitation is 70%.

    Low: 60 °F

    Chance
    T-storms then
    Rain Likely

  • Saturday

    Saturday: Rain likely and possibly a thunderstorm. Mostly cloudy, with a high near 68. Breezy. Chance of precipitation is 70%.

    High: 68 °F

    Rain Likely
    and Breezy

Detailed Forecast

Today
A chance of rain and thunderstorms before 2pm, then a slight chance of rain and thunderstorms after 4pm. Partly sunny, with a high near 84. Breezy, with a southwest wind 13 to 21 mph, with gusts as high as 31 mph. Chance of precipitation is 30%.
Tonight
A chance of rain and thunderstorms, then rain likely after 1am. Mostly cloudy, with a low around 60. South wind 6 to 11 mph, with gusts as high as 21 mph. Chance of precipitation is 70%.
Wednesday
Rain and possibly a thunderstorm. High near 74. South wind 5 to 11 mph. Chance of precipitation is 80%.
Wednesday Night
A chance of rain, with thunderstorms also possible after 1am. Mostly cloudy, with a low around 64. Southeast wind 11 to 15 mph, with gusts as high as 24 mph. Chance of precipitation is 40%.
Thursday
Rain and possibly a thunderstorm. High near 77. Breezy, with a south wind 17 to 23 mph, with gusts as high as 34 mph. Chance of precipitation is 80%.
Thursday Night
Rain likely and possibly a thunderstorm. Mostly cloudy, with a low around 60. Chance of precipitation is 70%.
Friday
A chance of rain, with thunderstorms also possible after 1pm. Partly sunny, with a high near 80. Chance of precipitation is 50%.
Friday Night
A chance of rain and thunderstorms, then rain likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 60. Chance of precipitation is 70%.
Saturday
Rain likely and possibly a thunderstorm. Mostly cloudy, with a high near 68. Breezy. Chance of precipitation is 70%.
Saturday Night
A 40 percent chance of rain. Mostly cloudy, with a low around 40.
Sunday
A 20 percent chance of rain. Mostly sunny, with a high near 57.
Sunday Night
Mostly clear, with a low around 35.
Monday
Sunny, with a high near 61.
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ABOUT THIS FORECAST

 
Point Forecast:
Maryville IL
 38.72°N 89.97°W (Elev. 558 ft)
Last Update:
5:51 am CDT Mar 31, 2026
Forecast Valid:
6am CDT Mar 31, 2026-6pm CDT Apr 6, 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