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

57°F

14°C

Humidity 39%
Wind Speed W 15 mph
Barometer 29.76 in
Dewpoint 32°F (0°C)
Visibility 10.00 mi
Last update 13 Jan 5:50 pm CST
Extended Forecast for

Saint Jacob IL

  • Tonight

    Tonight: A 20 percent chance of rain before 11pm. Cloudy, with a low around 38. West wind 8 to 14 mph becoming northwest after midnight. Winds could gust as high as 26 mph.

    Low: 38 °F

    Slight Chance
    Rain then
    Cloudy

  • Wednesday

    Wednesday: A chance of sprinkles and flurries before 10am, then a chance of flurries between 10am and 11am. Cloudy through mid morning, then gradual clearing, with a temperature falling to around 30 by 5pm. Breezy, with a north wind 15 to 23 mph, with gusts as high as 32 mph.

    High: 39 °F⇓

    Breezy.
    Chance
    Sprinkles/Flurries
    then
    Decreasing
    Clouds

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 17. Northwest wind 9 to 15 mph, with gusts as high as 26 mph.

    Low: 17 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 32. Northwest wind 6 to 9 mph becoming south in the afternoon.

    High: 32 °F

    Sunny

  • Thursday Night

    Thursday Night: A 30 percent chance of snow. Mostly cloudy, with a low around 26. South wind 6 to 14 mph becoming west after midnight. Winds could gust as high as 23 mph.

    Low: 26 °F

    Chance Snow

  • Friday

    Friday: Partly sunny, with a high near 43. Breezy.

    High: 43 °F

    Partly Sunny
    and Breezy

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 19.

    Low: 19 °F

    Mostly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 26.

    High: 26 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 10.

    Low: 10 °F

    Partly Cloudy

Detailed Forecast

Tonight
A 20 percent chance of rain before 11pm. Cloudy, with a low around 38. West wind 8 to 14 mph becoming northwest after midnight. Winds could gust as high as 26 mph.
Wednesday
A chance of sprinkles and flurries before 10am, then a chance of flurries between 10am and 11am. Cloudy through mid morning, then gradual clearing, with a temperature falling to around 30 by 5pm. Breezy, with a north wind 15 to 23 mph, with gusts as high as 32 mph.
Wednesday Night
Mostly clear, with a low around 17. Northwest wind 9 to 15 mph, with gusts as high as 26 mph.
Thursday
Sunny, with a high near 32. Northwest wind 6 to 9 mph becoming south in the afternoon.
Thursday Night
A 30 percent chance of snow. Mostly cloudy, with a low around 26. South wind 6 to 14 mph becoming west after midnight. Winds could gust as high as 23 mph.
Friday
Partly sunny, with a high near 43. Breezy.
Friday Night
Mostly cloudy, with a low around 19.
Saturday
Partly sunny, with a high near 26.
Saturday Night
Partly cloudy, with a low around 10.
Sunday
Mostly sunny, with a high near 29.
Sunday Night
Partly cloudy, with a low around 16.
M.L.King Day
Sunny, with a high near 32.
Monday Night
Mostly clear, with a low around 11.
Tuesday
Mostly sunny, with a high near 30.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Saint Jacob IL
 38.74°N 89.77°W (Elev. 453 ft)
Last Update:
4:31 pm CST Jan 13, 2026
Forecast Valid:
6pm CST Jan 13, 2026-6pm CST Jan 20, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation