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

27°F

-3°C

Humidity 64%
Wind Speed S 10 mph
Barometer 30.19 in
Dewpoint 16°F (-9°C)
Visibility 10.00 mi
Wind Chill18°F (-8°C)
Last update 1 Feb 9:50 pm CST
Extended Forecast for

2 Miles NNW Saint Jacob IL

  • Tonight

    Tonight: A 30 percent chance of snow, mainly before 10pm. Cloudy, with a low around 20. South wind 5 to 9 mph becoming light southwest after midnight. Winds could gust as high as 21 mph.

    Low: 20 °F

    Chance Snow
    then Cloudy

  • Monday

    Monday: Mostly cloudy, with a high near 36. Light and variable wind becoming west around 6 mph.

    High: 36 °F

    Mostly Cloudy

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 28. Calm wind becoming northeast around 5 mph after midnight.

    Low: 28 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: A 20 percent chance of snow. Mostly cloudy, with a high near 33. North wind 5 to 9 mph.

    High: 33 °F

    Slight Chance
    Snow

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 17. North wind 3 to 6 mph.

    Low: 17 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 29.

    High: 29 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 14.

    Low: 14 °F

    Partly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 39.

    High: 39 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 30.

    Low: 30 °F

    Partly Cloudy

Detailed Forecast

Tonight
A 30 percent chance of snow, mainly before 10pm. Cloudy, with a low around 20. South wind 5 to 9 mph becoming light southwest after midnight. Winds could gust as high as 21 mph.
Monday
Mostly cloudy, with a high near 36. Light and variable wind becoming west around 6 mph.
Monday Night
Mostly cloudy, with a low around 28. Calm wind becoming northeast around 5 mph after midnight.
Tuesday
A 20 percent chance of snow. Mostly cloudy, with a high near 33. North wind 5 to 9 mph.
Tuesday Night
Mostly cloudy, with a low around 17. North wind 3 to 6 mph.
Wednesday
Mostly sunny, with a high near 29.
Wednesday Night
Partly cloudy, with a low around 14.
Thursday
Partly sunny, with a high near 39.
Thursday Night
Partly cloudy, with a low around 30.
Friday
Mostly sunny, with a high near 44.
Friday Night
Partly cloudy, with a low around 21.
Saturday
Sunny, with a high near 35.
Saturday Night
Partly cloudy, with a low around 24.
Sunday
Mostly sunny, with a high near 40.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles NNW Saint Jacob IL
 38.74°N 89.77°W (Elev. 453 ft)
Last Update:
8:51 pm CST Feb 1, 2026
Forecast Valid:
9pm CST Feb 1, 2026-6pm CST Feb 8, 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