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 and Breezy

37°F

3°C

Humidity 82%
Wind Speed W 24 G 35 mph
Barometer 29.58 in
Dewpoint 31°F (-1°C)
Visibility 10.00 mi
Wind Chill26°F (-3°C)
Last update 15 Mar 10:15 pm CDT
Extended Forecast for

Maryville IL

Wind Advisory March 15, 10:36pm until March 16, 12:00pm
Click here for hazard details and duration
Wind Advisory
  •  
    Wind Advisory March 15, 10:36pm until March 16, 12:00pm

    NOW until 12:00pm Mon

    Wind Advisory

  • Tonight

    Low: 22 °F

    Breezy.
    Rain/Snow
    Likely then
    Chance Snow

  • Monday

    Monday: A slight chance of snow before 1pm, then scattered flurries between 1pm and 2pm. Cloudy, with a high near 28. Blustery, with a northwest wind 24 to 26 mph, with gusts as high as 40 mph. Chance of precipitation is 20%.

    High: 28 °F

    Slight Chance
    Snow and
    Blustery

  • Monday Night

    Monday Night: Partly cloudy, with a low around 14. Blustery, with a northwest wind 13 to 20 mph, with gusts as high as 28 mph.

    Low: 14 °F

    Partly Cloudy
    and Blustery
    then Mostly
    Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 34. Northwest wind 6 to 9 mph becoming southwest in the afternoon.

    High: 34 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: A 30 percent chance of snow, mainly after 1am. Mostly cloudy, with a low around 30. Southeast wind 6 to 14 mph, with gusts as high as 23 mph.

    Low: 30 °F

    Chance Snow

  • Wednesday

    Wednesday: Mostly sunny, with a high near 61.

    High: 61 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 42.

    Low: 42 °F

    Partly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 70.

    High: 70 °F

    Sunny

Detailed Forecast

Tonight
Rain and snow likely before midnight, then a chance of snow. Cloudy, with a low around 22. Breezy, with a west wind around 26 mph, with gusts as high as 48 mph. Chance of precipitation is 60%. Total nighttime snow accumulation of less than a half inch possible.
Monday
A slight chance of snow before 1pm, then scattered flurries between 1pm and 2pm. Cloudy, with a high near 28. Blustery, with a northwest wind 24 to 26 mph, with gusts as high as 40 mph. Chance of precipitation is 20%.
Monday Night
Partly cloudy, with a low around 14. Blustery, with a northwest wind 13 to 20 mph, with gusts as high as 28 mph.
Tuesday
Mostly sunny, with a high near 34. Northwest wind 6 to 9 mph becoming southwest in the afternoon.
Tuesday Night
A 30 percent chance of snow, mainly after 1am. Mostly cloudy, with a low around 30. Southeast wind 6 to 14 mph, with gusts as high as 23 mph.
Wednesday
Mostly sunny, with a high near 61.
Wednesday Night
Partly cloudy, with a low around 42.
Thursday
Sunny, with a high near 70.
Thursday Night
Mostly clear, with a low around 44.
Friday
Mostly sunny, with a high near 73.
Friday Night
Partly cloudy, with a low around 51.
Saturday
Sunny, with a high near 75.
Saturday Night
Mostly clear, with a low around 47.
Sunday
Mostly sunny, with a high near 72.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Maryville IL
 38.72°N 89.97°W (Elev. 558 ft)
Last Update:
7:30 pm CDT Mar 15, 2026
Forecast Valid:
10pm CDT Mar 15, 2026-6pm CDT Mar 22, 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