Current conditions at

St. Louis Regional Airport (KALN)

Lat: 38.89°NLon: 90.03°WElev: 518ft.

Fair

32°F

0°C

Humidity 76%
Wind Speed S 8 mph
Barometer 30.03 in
Dewpoint 25°F (-4°C)
Visibility 10.00 mi
Wind Chill25°F (-4°C)
Last update 9 Dec 3:55 am CST
Extended Forecast for

Saint Jacob IL

  • Today

    Today: Mostly cloudy, then gradually becoming sunny, with a high near 50. South wind 10 to 16 mph, with gusts as high as 24 mph.

    High: 50 °F

    Decreasing
    Clouds

  • Tonight

    Tonight: A slight chance of rain between midnight and 3am.  Cloudy, then gradually becoming partly cloudy, with a steady temperature around 45. South wind around 17 mph becoming west after midnight. Winds could gust as high as 33 mph.  Chance of precipitation is 20%.

    Low: 45 °F

    Mostly Cloudy
    then Slight
    Chance Rain

  • Wednesday

    Wednesday: Increasing clouds, with a temperature falling to around 36 by 4pm. Breezy, with a northwest wind 16 to 25 mph, with gusts as high as 39 mph.

    High: 45 °F

    Increasing
    Clouds and
    Breezy

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 26. Northwest wind 6 to 11 mph becoming light  after midnight.

    Low: 26 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly cloudy, with a high near 39. Light and variable wind becoming west around 6 mph in the morning.

    High: 39 °F

    Mostly Cloudy

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 29.

    Low: 29 °F

    Mostly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 42.

    High: 42 °F

    Partly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 17.

    Low: 17 °F

    Mostly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 28.

    High: 28 °F

    Partly Sunny

Detailed Forecast

Today
Mostly cloudy, then gradually becoming sunny, with a high near 50. South wind 10 to 16 mph, with gusts as high as 24 mph.
Tonight
A slight chance of rain between midnight and 3am. Cloudy, then gradually becoming partly cloudy, with a steady temperature around 45. South wind around 17 mph becoming west after midnight. Winds could gust as high as 33 mph. Chance of precipitation is 20%.
Wednesday
Increasing clouds, with a temperature falling to around 36 by 4pm. Breezy, with a northwest wind 16 to 25 mph, with gusts as high as 39 mph.
Wednesday Night
Mostly cloudy, with a low around 26. Northwest wind 6 to 11 mph becoming light after midnight.
Thursday
Mostly cloudy, with a high near 39. Light and variable wind becoming west around 6 mph in the morning.
Thursday Night
Mostly cloudy, with a low around 29.
Friday
Partly sunny, with a high near 42.
Friday Night
Mostly cloudy, with a low around 17.
Saturday
Partly sunny, with a high near 28.
Saturday Night
Mostly cloudy, with a low around 8.
Sunday
Mostly sunny, with a high near 23.
Sunday Night
Partly cloudy, with a low around 13.
Monday
A slight chance of rain and snow. Partly sunny, with a high near 35. Chance of precipitation is 20%.
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ABOUT THIS FORECAST

 
Point Forecast:
Saint Jacob IL
 38.72°N 89.77°W (Elev. 499 ft)
4:01 am CST Dec 9, 2025
4am CST Dec 9, 2025-6pm CST Dec 15, 2025
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database