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

77°F

25°C

Humidity 51%
Wind Speed W 16 mph
Barometer 29.65 in
Dewpoint 57°F (14°C)
Visibility 10.00 mi
Heat Index79°F (26°C)
Last update 15 Nov 1:50 pm CST
Extended Forecast for

Maryville IL

  • This Afternoon

    This Afternoon: Sunny, with a high near 79. West wind 10 to 15 mph, with gusts as high as 23 mph.

    High: 79 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 43. North wind 7 to 11 mph, with gusts as high as 21 mph.

    Low: 43 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 58. North wind 6 to 10 mph.

    High: 58 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 33. Light and variable wind.

    Low: 33 °F

    Mostly Clear

  • Monday

    Monday: A 20 percent chance of showers after 3pm. Mostly sunny, with a high near 60. Light east wind becoming southeast 6 to 11 mph in the morning.

    High: 60 °F

    Sunny then
    Slight Chance
    Showers

  • Monday Night

    Monday Night: Showers likely, with thunderstorms also possible after midnight. Mostly cloudy, with a low around 47. Chance of precipitation is 70%.

    Low: 47 °F

    Showers
    Likely

  • Tuesday

    Tuesday: A slight chance of showers and thunderstorms. Partly sunny, with a high near 71. Chance of precipitation is 20%.

    High: 71 °F

    Slight Chance
    T-storms then
    Slight Chance
    Showers

  • Tuesday Night

    Tuesday Night: A 20 percent chance of showers. Mostly cloudy, with a low around 47.

    Low: 47 °F

    Slight Chance
    Showers

  • Wednesday

    Wednesday: A 30 percent chance of rain, mainly after noon. Partly sunny, with a high near 64.

    High: 64 °F

    Chance Rain

Detailed Forecast

This Afternoon
Sunny, with a high near 79. West wind 10 to 15 mph, with gusts as high as 23 mph.
Tonight
Mostly clear, with a low around 43. North wind 7 to 11 mph, with gusts as high as 21 mph.
Sunday
Sunny, with a high near 58. North wind 6 to 10 mph.
Sunday Night
Mostly clear, with a low around 33. Light and variable wind.
Monday
A 20 percent chance of showers after 3pm. Mostly sunny, with a high near 60. Light east wind becoming southeast 6 to 11 mph in the morning.
Monday Night
Showers likely, with thunderstorms also possible after midnight. Mostly cloudy, with a low around 47. Chance of precipitation is 70%.
Tuesday
A slight chance of showers and thunderstorms. Partly sunny, with a high near 71. Chance of precipitation is 20%.
Tuesday Night
A 20 percent chance of showers. Mostly cloudy, with a low around 47.
Wednesday
A 30 percent chance of rain, mainly after noon. Partly sunny, with a high near 64.
Wednesday Night
Rain likely, mainly after midnight. Mostly cloudy, with a low around 52. Chance of precipitation is 60%.
Thursday
Rain and possibly a thunderstorm. High near 65. Chance of precipitation is 80%.
Thursday Night
Rain and possibly a thunderstorm. Low around 53. Chance of precipitation is 80%.
Friday
Rain likely. Partly sunny, with a high near 63. Chance of precipitation is 60%.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Maryville IL
 38.7°N 89.94°W (Elev. 551 ft)
Last Update:
2:26 pm CST Nov 15, 2025
Forecast Valid:
2pm CST Nov 15, 2025-6pm CST Nov 21, 2025
 
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