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

Salem, Salem-Leckrone Airport (KSLO)

Lat: 38.64°NLon: 88.96°WElev: 574ft.

Overcast

21°F

-6°C

Humidity 70%
Wind Speed N 3 mph
Barometer 30.25 in
Dewpoint 12°F (-11°C)
Visibility 10.00 mi
Last update 4 Dec 8:55 pm CST
Extended Forecast for

Vandalia IL

  • Tonight

    Tonight: Patchy fog between midnight and 5am. Otherwise, cloudy early, then gradual clearing, with a low around 7. Calm wind.

    Low: 7 °F

    Cloudy then
    Patchy Fog

  • Friday

    Friday: Sunny, with a high near 34. Calm wind becoming south 5 to 7 mph in the morning.

    High: 34 °F

    Sunny

  • Friday Night

    Friday Night: Increasing clouds, with a low around 25. South wind 5 to 7 mph becoming calm after midnight.

    Low: 25 °F

    Increasing
    Clouds

  • Saturday

    Saturday: Cloudy, then gradually becoming mostly sunny, with a high near 35. Calm wind.

    High: 35 °F

    Decreasing
    Clouds

  • Saturday Night

    Saturday Night: A 20 percent chance of snow after midnight. Mostly cloudy, with a low around 26. Calm wind becoming east around 5 mph after midnight.

    Low: 26 °F

    Mostly Cloudy
    then Slight
    Chance Snow

  • Sunday

    Sunday: A chance of rain and snow before noon, then a slight chance of snow. Mostly cloudy, with a high near 34. Chance of precipitation is 30%.

    High: 34 °F

    Chance
    Rain/Snow
    then Slight
    Chance Snow

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 13.

    Low: 13 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 30.

    High: 30 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 20.

    Low: 20 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Patchy fog between midnight and 5am. Otherwise, cloudy early, then gradual clearing, with a low around 7. Calm wind.
Friday
Sunny, with a high near 34. Calm wind becoming south 5 to 7 mph in the morning.
Friday Night
Increasing clouds, with a low around 25. South wind 5 to 7 mph becoming calm after midnight.
Saturday
Cloudy, then gradually becoming mostly sunny, with a high near 35. Calm wind.
Saturday Night
A 20 percent chance of snow after midnight. Mostly cloudy, with a low around 26. Calm wind becoming east around 5 mph after midnight.
Sunday
A chance of rain and snow before noon, then a slight chance of snow. Mostly cloudy, with a high near 34. Chance of precipitation is 30%.
Sunday Night
Mostly cloudy, with a low around 13.
Monday
Mostly sunny, with a high near 30.
Monday Night
Mostly cloudy, with a low around 20.
Tuesday
Mostly sunny, with a high near 41.
Tuesday Night
Mostly cloudy, with a low around 28.
Wednesday
A 40 percent chance of rain. Mostly cloudy, with a high near 43.
Wednesday Night
Mostly cloudy, with a low around 20.
Thursday
Partly sunny, with a high near 31.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Vandalia IL
 38.96°N 89.11°W (Elev. 531 ft)
Last Update:
8:26 pm CST Dec 4, 2025
Forecast Valid:
9pm CST Dec 4, 2025-6pm CST Dec 11, 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