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.

Light Snow

25°F

-4°C

Humidity 86%
Wind Speed S 5 mph
Barometer 30.29 in
Dewpoint 21°F (-6°C)
Visibility 2.00 mi
Wind Chill19°F (-7°C)
Last update 1 Dec 11:45 am CST
Extended Forecast for

Mount Olive IL

Winter Weather Advisory until December 2, 12:00am
Click here for hazard details and duration
Winter Weather Advisory
  •  
    Winter Weather Advisory until December 2, 12:00am

    NOW until 12:00am Tue

    Winter Weather Advisory

  • This Afternoon

    High: 26 °F

    Snow

  • Tonight

    Tonight: Snow, mainly before 11pm. Low around 15. Calm wind becoming northwest 5 to 8 mph in the evening. Chance of precipitation is 100%. New snow accumulation of 1 to 3 inches possible.

    Low: 15 °F

    Snow then
    Cloudy

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 24. Northwest wind 5 to 7 mph becoming light and variable in the afternoon.

    High: 24 °F

    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 17. Calm wind becoming south around 6 mph in the evening.

    Low: 17 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 36. South wind 5 to 8 mph becoming west in the afternoon.

    High: 36 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 10.

    Low: 10 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly sunny and cold, with a high near 19.

    High: 19 °F

    Cold

  • Thursday Night

    Thursday Night: A 20 percent chance of snow after midnight. Mostly cloudy, with a low around 6.

    Low: 6 °F

    Mostly Cloudy
    then Slight
    Chance Snow

Detailed Forecast

This Afternoon
Snow. High near 26. Southeast wind around 6 mph becoming calm. Chance of precipitation is 90%. Total daytime snow accumulation of 1 to 3 inches possible.
Tonight
Snow, mainly before 11pm. Low around 15. Calm wind becoming northwest 5 to 8 mph in the evening. Chance of precipitation is 100%. New snow accumulation of 1 to 3 inches possible.
Tuesday
Mostly cloudy, with a high near 24. Northwest wind 5 to 7 mph becoming light and variable in the afternoon.
Tuesday Night
Partly cloudy, with a low around 17. Calm wind becoming south around 6 mph in the evening.
Wednesday
Partly sunny, with a high near 36. South wind 5 to 8 mph becoming west in the afternoon.
Wednesday Night
Mostly cloudy, with a low around 10.
Thursday
Mostly sunny and cold, with a high near 19.
Thursday Night
A 20 percent chance of snow after midnight. Mostly cloudy, with a low around 6.
Friday
A 30 percent chance of snow. Mostly cloudy, with a high near 31.
Friday Night
A 20 percent chance of snow before midnight. Mostly cloudy, with a low around 22.
Saturday
Mostly cloudy, with a high near 35.
Saturday Night
Mostly cloudy, with a low around 22.
Sunday
Mostly cloudy, with a high near 34.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Mount Olive IL
 39.07°N 89.73°W (Elev. 669 ft)
Last Update:
11:51 am CST Dec 1, 2025
Forecast Valid:
12pm CST Dec 1, 2025-6pm CST Dec 7, 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