National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

St. Louis Regional Airport (KALN)

Lat: 38.89°NLon: 90.03°WElev: 518ft.

Overcast

52°F

11°C

Humidity 88%
Wind Speed SE 7 mph
Barometer 29.97 in
Dewpoint 48°F (9°C)
Visibility 10.00 mi
Wind Chill50°F (10°C)
Last update 24 Nov 3:50 pm CST
Extended Forecast for

Saint Jacob IL

  • This Afternoon

    This Afternoon: A 50 percent chance of rain. Cloudy, with a high near 52. Southeast wind around 7 mph.

    High: 52 °F

    Chance Rain

  • Tonight

    Tonight: Rain, mainly before 4am. Patchy fog after 8pm. Low around 50. Southeast wind 5 to 8 mph becoming south after midnight. Chance of precipitation is 100%.

    Low: 50 °F

    Rain and
    Patchy Fog

  • Tuesday

    Tuesday: A 20 percent chance of rain after noon. Patchy fog before 9am. Otherwise, mostly cloudy, with a high near 58. Calm wind becoming west 5 to 8 mph in the morning.

    High: 58 °F

    Patchy Fog
    then Slight
    Chance Rain

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 35. West wind 8 to 18 mph, with gusts as high as 30 mph.

    Low: 35 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 45. Breezy, with a west wind 14 to 21 mph, with gusts as high as 31 mph.

    High: 45 °F

    Mostly Sunny
    and Breezy

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 26.

    Low: 26 °F

    Partly Cloudy

  • Thanksgiving Day

    Thanksgiving Day: Sunny, with a high near 41.

    High: 41 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 21.

    Low: 21 °F

    Mostly Clear

  • Friday

    Friday: Mostly sunny, with a high near 39.

    High: 39 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
A 50 percent chance of rain. Cloudy, with a high near 52. Southeast wind around 7 mph.
Tonight
Rain, mainly before 4am. Patchy fog after 8pm. Low around 50. Southeast wind 5 to 8 mph becoming south after midnight. Chance of precipitation is 100%.
Tuesday
A 20 percent chance of rain after noon. Patchy fog before 9am. Otherwise, mostly cloudy, with a high near 58. Calm wind becoming west 5 to 8 mph in the morning.
Tuesday Night
Mostly cloudy, with a low around 35. West wind 8 to 18 mph, with gusts as high as 30 mph.
Wednesday
Mostly sunny, with a high near 45. Breezy, with a west wind 14 to 21 mph, with gusts as high as 31 mph.
Wednesday Night
Partly cloudy, with a low around 26.
Thanksgiving Day
Sunny, with a high near 41.
Thursday Night
Mostly clear, with a low around 21.
Friday
Mostly sunny, with a high near 39.
Friday Night
A chance of snow before midnight, then snow likely, possibly mixed with rain. Cloudy, with a low around 30. Chance of precipitation is 60%.
Saturday
Rain and snow likely. Cloudy, with a high near 40. Chance of precipitation is 70%.
Saturday Night
Rain likely. Cloudy, with a low around 32. Chance of precipitation is 60%.
Sunday
A 50 percent chance of rain. Mostly cloudy, with a high near 44.
Sunday Night
A 50 percent chance of rain. Cloudy, with a low around 32.
Monday
A 40 percent chance of rain. Mostly cloudy, with a high near 45.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Saint Jacob IL
 38.72°N 89.77°W (Elev. 499 ft)
Last Update:
3:16 pm CST Nov 24, 2025
Forecast Valid:
4pm CST Nov 24, 2025-6pm CST Dec 1, 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