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.

Fog/Mist

52°F

11°C

Humidity 100%
Wind Speed Vrbl 3 mph
Barometer 30.08 in
Dewpoint 52°F (11°C)
Visibility 1.00 mi
Last update 25 Dec 7:45 am CST
Extended Forecast for

Maryville IL

Dense Fog Advisory December 25, 08:01am until December 25, 10:00am
Click here for hazard details and duration
...
  •  
    Dense Fog Advisory December 25, 08:01am until December 25, 10:00am

    NOW until 10:00am Thu

    Dense Fog Advisory

  • Christmas Day

    High: 65 °F

    Dense Fog

  • Tonight

    Tonight: Mostly cloudy, with a low around 57. East wind 6 to 8 mph becoming south after midnight.

    Low: 57 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 69. Southwest wind 6 to 10 mph becoming northwest in the afternoon.

    High: 69 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 46. Northwest wind around 5 mph becoming calm in the evening.

    Low: 46 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly cloudy, with a high near 66. Southeast wind 5 to 10 mph.

    High: 66 °F

    Mostly Cloudy

  • Saturday Night

    Saturday Night: A 20 percent chance of rain after midnight. Cloudy, with a steady temperature around 62.

    Low: 62 °F

    Cloudy then
    Slight Chance
    Rain

  • Sunday

    Sunday: A chance of rain, then rain likely and possibly a thunderstorm after noon. Cloudy, with a high near 66. Chance of precipitation is 70%.

    High: 66 °F

    Rain Likely

  • Sunday Night

    Sunday Night: A chance of rain and snow before midnight. Mostly cloudy, with a low around 20. Blustery. Chance of precipitation is 40%.

    Low: 20 °F

    Blustery.
    Chance
    Rain/Snow
    then Mostly
    Cloudy

Detailed Forecast

Christmas Day
Widespread dense fog, mainly before 10am. Otherwise, cloudy, with a high near 65. Light and variable wind becoming east around 6 mph in the afternoon.
Tonight
Mostly cloudy, with a low around 57. East wind 6 to 8 mph becoming south after midnight.
Friday
Mostly sunny, with a high near 69. Southwest wind 6 to 10 mph becoming northwest in the afternoon.
Friday Night
Partly cloudy, with a low around 46. Northwest wind around 5 mph becoming calm in the evening.
Saturday
Mostly cloudy, with a high near 66. Southeast wind 5 to 10 mph.
Saturday Night
A 20 percent chance of rain after midnight. Cloudy, with a steady temperature around 62.
Sunday
A chance of rain, then rain likely and possibly a thunderstorm after noon. Cloudy, with a high near 66. Chance of precipitation is 70%.
Sunday Night
A chance of rain and snow before midnight. Mostly cloudy, with a low around 20. Blustery. Chance of precipitation is 40%.
Monday
Sunny, with a high near 28. Blustery.
Monday Night
Mostly clear, with a low around 18.
Tuesday
Sunny, with a high near 34.
Tuesday Night
Mostly clear, with a low around 24.
Wednesday
Partly sunny, with a high near 42.
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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:
4:41 am CST Dec 25, 2025
Forecast Valid:
8am CST Dec 25, 2025-6pm CST Dec 31, 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