Current conditions at

St. Louis Regional Airport (KALN)

Lat: 38.89°NLon: 90.03°WElev: 518ft.

Overcast

35°F

2°C

Humidity 63%
Wind Speed SE 6 mph
Barometer 30.31 in
Dewpoint 23°F (-5°C)
Visibility 10.00 mi
Wind Chill30°F (-1°C)
Last update 29 Nov 3:15 am CST
Extended Forecast for

Saint Jacob IL

Winter Weather Advisory November 29, 03:27am until November 30, 12:00am
Click here for hazard details and duration
Winter Weather Advisory
  •  
    Winter Weather Advisory November 29, 03:27am until November 30, 12:00am

    NOW until 12:00am Sun

    Winter Weather Advisory

  • Overnight

    Low: 29 °F

    Snow

  • Saturday

    Saturday: Rain and snow, possibly mixed with sleet before 3pm, then rain, possibly mixed with snow between 3pm and 4pm, then rain likely after 4pm. The snow could be heavy at times.  High near 38. Breezy, with a southeast wind 13 to 20 mph, with gusts as high as 33 mph.  Chance of precipitation is 100%. New snow and sleet accumulation of 2 to 4 inches possible.

    High: 38 °F

    Wintry Mix
    and Breezy

  • Saturday Night

    Saturday Night: A 50 percent chance of rain before 10pm.  Cloudy, with a low around 25. Breezy, with a south wind 17 to 21 mph becoming west after midnight. Winds could gust as high as 34 mph.

    Low: 25 °F

    Breezy.
    Chance Rain
    then Cloudy

  • Sunday

    Sunday: Mostly cloudy, with a high near 29. Northwest wind 11 to 18 mph, with gusts as high as 30 mph.

    High: 29 °F

    Mostly Cloudy

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 17. Northwest wind 5 to 10 mph becoming light and variable  in the evening.

    Low: 17 °F

    Mostly Cloudy

  • Monday

    Monday: A 20 percent chance of snow after noon.  Cloudy, with a high near 31.

    High: 31 °F

    Mostly Cloudy
    then Slight
    Chance Snow

  • Monday Night

    Monday Night: Snow likely.  Cloudy, with a low around 21. Chance of precipitation is 70%.

    Low: 21 °F

    Snow Likely

  • Tuesday

    Tuesday: Partly sunny, with a high near 30.

    High: 30 °F

    Partly Sunny

Detailed Forecast

Overnight
Snow. Low around 29. Southeast wind 9 to 11 mph, with gusts as high as 25 mph. Chance of precipitation is 100%. Total nighttime snow accumulation of less than one inch possible.
Saturday
Rain and snow, possibly mixed with sleet before 3pm, then rain, possibly mixed with snow between 3pm and 4pm, then rain likely after 4pm. The snow could be heavy at times. High near 38. Breezy, with a southeast wind 13 to 20 mph, with gusts as high as 33 mph. Chance of precipitation is 100%. New snow and sleet accumulation of 2 to 4 inches possible.
Saturday Night
A 50 percent chance of rain before 10pm. Cloudy, with a low around 25. Breezy, with a south wind 17 to 21 mph becoming west after midnight. Winds could gust as high as 34 mph.
Sunday
Mostly cloudy, with a high near 29. Northwest wind 11 to 18 mph, with gusts as high as 30 mph.
Sunday Night
Mostly cloudy, with a low around 17. Northwest wind 5 to 10 mph becoming light and variable in the evening.
Monday
A 20 percent chance of snow after noon. Cloudy, with a high near 31.
Monday Night
Snow likely. Cloudy, with a low around 21. Chance of precipitation is 70%.
Tuesday
Partly sunny, with a high near 30.
Tuesday Night
Partly cloudy, with a low around 15.
Wednesday
Mostly sunny, with a high near 38.
Wednesday Night
Mostly cloudy, with a low around 16.
Thursday
Partly sunny, with a high near 26.
Thursday Night
Mostly cloudy, with a low around 17.
Friday
A slight chance of rain and snow. Partly sunny, with a high near 37. Chance of precipitation is 20%.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
Saint Jacob IL
 38.72°N 89.77°W (Elev. 499 ft)
3:16 am CST Nov 29, 2025
3am CST Nov 29, 2025-6pm CST Dec 5, 2025
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database