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

43°F

6°C

Humidity 58%
Wind Speed S 9 mph
Barometer 30.08 in
Dewpoint 29°F (-2°C)
Visibility 10.00 mi
Wind Chill38°F (3°C)
Last update 13 Feb 10:55 pm CST
Extended Forecast for

Maryville IL

  • Tonight

    Tonight: Mostly cloudy, with a low around 37. South wind around 6 mph becoming calm after midnight.

    Low: 37 °F

    Mostly Cloudy

  • Saturday

    Saturday: Rain, mainly after 9am. High near 51. Calm wind becoming southeast 5 to 8 mph in the morning. Chance of precipitation is 90%.

    High: 51 °F

    Rain Likely
    then Rain

  • Saturday Night

    Saturday Night: Rain, mainly before 5am. Low around 45. East wind around 8 mph. Chance of precipitation is 90%.

    Low: 45 °F

    Rain

  • Sunday

    Sunday: A 20 percent chance of rain before noon. Cloudy, then gradually becoming mostly sunny, with a high near 57. Northeast wind 7 to 10 mph.

    High: 57 °F

    Slight Chance
    Rain then
    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 38. North wind around 6 mph becoming calm in the evening.

    Low: 38 °F

    Mostly Clear

  • Washington's Birthday

    Washington's Birthday: Mostly sunny, with a high near 61.

    High: 61 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 44.

    Low: 44 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 65.

    High: 65 °F

    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 55.

    Low: 55 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Mostly cloudy, with a low around 37. South wind around 6 mph becoming calm after midnight.
Saturday
Rain, mainly after 9am. High near 51. Calm wind becoming southeast 5 to 8 mph in the morning. Chance of precipitation is 90%.
Saturday Night
Rain, mainly before 5am. Low around 45. East wind around 8 mph. Chance of precipitation is 90%.
Sunday
A 20 percent chance of rain before noon. Cloudy, then gradually becoming mostly sunny, with a high near 57. Northeast wind 7 to 10 mph.
Sunday Night
Mostly clear, with a low around 38. North wind around 6 mph becoming calm in the evening.
Washington's Birthday
Mostly sunny, with a high near 61.
Monday Night
Mostly cloudy, with a low around 44.
Tuesday
Mostly cloudy, with a high near 65.
Tuesday Night
Mostly cloudy, with a low around 55.
Wednesday
Partly sunny, with a high near 71.
Wednesday Night
A 20 percent chance of rain. Mostly cloudy, with a low around 47.
Thursday
A 20 percent chance of rain. Partly sunny, with a high near 64.
Thursday Night
Partly cloudy, with a low around 41.
Friday
A 20 percent chance of rain. Mostly sunny, with a high near 57.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Maryville IL
 38.72°N 89.97°W (Elev. 558 ft)
Last Update:
8:37 pm CST Feb 13, 2026
Forecast Valid:
11pm CST Feb 13, 2026-6pm CST Feb 20, 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