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.

Fair

36°F

2°C

Humidity 87%
Wind Speed E 7 mph
Barometer 29.93 in
Dewpoint 32°F (0°C)
Visibility 10.00 mi
Wind Chill30°F (-1°C)
Last update 6 Dec 7:50 pm CST
Extended Forecast for

2 Miles NNW Saint Jacob IL

  • Tonight

    Tonight: Cloudy, with a low around 33. South wind 5 to 8 mph.

    Low: 33 °F

    Cloudy

  • Sunday

    Sunday: A slight chance of drizzle, mixing with snow after 4pm, then gradually ending. Cloudy, with a high near 38. Light and variable wind becoming north 8 to 13 mph in the morning. Winds could gust as high as 23 mph. Chance of precipitation is 20%.

    High: 38 °F

    Slight Chance
    Drizzle then
    Slight Chance
    Drizzle/Snow

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 19. North wind 7 to 13 mph, with gusts as high as 22 mph.

    Low: 19 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly cloudy, then gradually becoming sunny, with a high near 33. North wind 5 to 7 mph becoming calm in the morning.

    High: 33 °F

    Decreasing
    Clouds

  • Monday Night

    Monday Night: Partly cloudy, with a low around 23. Light south wind increasing to 5 to 10 mph in the evening.

    Low: 23 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 50.

    High: 50 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 39.

    Low: 39 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 47.

    High: 47 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: A slight chance of rain and snow before midnight, then a slight chance of snow. Mostly cloudy, with a low around 27. Chance of precipitation is 20%.

    Low: 27 °F

    Slight Chance
    Rain/Snow
    then Slight
    Chance Snow

Detailed Forecast

Tonight
Cloudy, with a low around 33. South wind 5 to 8 mph.
Sunday
A slight chance of drizzle, mixing with snow after 4pm, then gradually ending. Cloudy, with a high near 38. Light and variable wind becoming north 8 to 13 mph in the morning. Winds could gust as high as 23 mph. Chance of precipitation is 20%.
Sunday Night
Mostly cloudy, with a low around 19. North wind 7 to 13 mph, with gusts as high as 22 mph.
Monday
Mostly cloudy, then gradually becoming sunny, with a high near 33. North wind 5 to 7 mph becoming calm in the morning.
Monday Night
Partly cloudy, with a low around 23. Light south wind increasing to 5 to 10 mph in the evening.
Tuesday
Mostly sunny, with a high near 50.
Tuesday Night
Mostly cloudy, with a low around 39.
Wednesday
Partly sunny, with a high near 47.
Wednesday Night
A slight chance of rain and snow before midnight, then a slight chance of snow. Mostly cloudy, with a low around 27. Chance of precipitation is 20%.
Thursday
A 20 percent chance of snow before noon. Mostly cloudy, with a high near 37.
Thursday Night
Mostly cloudy, with a low around 18.
Friday
Partly sunny, with a high near 27.
Friday Night
Mostly cloudy, with a low around 7.
Saturday
Mostly sunny, with a high near 22.
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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:
7:52 pm CST Dec 6, 2025
Forecast Valid:
8pm CST Dec 6, 2025-6pm CST Dec 13, 2025
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation