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

28°F

-2°C

Humidity 75%
Wind Speed NW 25 G 37 mph
Barometer 29.75 in
Dewpoint 21°F (-6°C)
Visibility 10.00 mi
Wind Chill13°F (-11°C)
Last update 16 Mar 4:55 am CDT
Extended Forecast for

Saint Jacob IL

Wind Advisory March 16, 05:22am until March 16, 12:00pm
Click here for hazard details and duration
Wind Advisory
  •  
    Wind Advisory March 16, 05:22am until March 16, 12:00pm

    NOW until 12:00pm Mon

    Wind Advisory

  • Today

    High: 28 °F

    Chance Snow
    and Windy

  • Tonight

    Tonight: Partly cloudy, with a low around 14. Blustery, with a northwest wind 13 to 21 mph, with gusts as high as 28 mph.

    Low: 14 °F

    Mostly Cloudy
    and Blustery
    then Partly
    Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 35. Northwest wind 6 to 10 mph becoming southwest in the afternoon.

    High: 35 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: A 40 percent chance of snow. 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 62. South wind 10 to 14 mph becoming west in the afternoon. Winds could gust as high as 22 mph.

    High: 62 °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 71.

    High: 71 °F

    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 43.

    Low: 43 °F

    Partly Cloudy

Detailed Forecast

Today
A chance of snow, mainly before 2pm, then a chance of flurries after 3pm. Cloudy, with a high near 28. Windy, with a northwest wind 25 to 31 mph, with gusts as high as 40 mph. Chance of precipitation is 30%.
Tonight
Partly cloudy, with a low around 14. Blustery, with a northwest wind 13 to 21 mph, with gusts as high as 28 mph.
Tuesday
Mostly sunny, with a high near 35. Northwest wind 6 to 10 mph becoming southwest in the afternoon.
Tuesday Night
A 40 percent chance of snow. 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 62. South wind 10 to 14 mph becoming west in the afternoon. Winds could gust as high as 22 mph.
Wednesday Night
Partly cloudy, with a low around 42.
Thursday
Sunny, with a high near 71.
Thursday Night
Partly cloudy, with a low around 43.
Friday
Mostly sunny, with a high near 73.
Friday Night
Partly cloudy, with a low around 52.
Saturday
Sunny, with a high near 76.
Saturday Night
Partly cloudy, with a low around 49.
Sunday
Sunny, with a high near 69.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Saint Jacob IL
 38.7°N 89.77°W (Elev. 509 ft)
Last Update:
3:56 am CDT Mar 16, 2026
Forecast Valid:
5am CDT Mar 16, 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