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.

Partly Cloudy

51°F

11°C

Humidity 44%
Wind Speed Calm
Barometer 29.79 in
Dewpoint 30°F (-1°C)
Visibility 10.00 mi
Last update 25 Feb 4:55 pm CST
Extended Forecast for

Vandalia IL

  • Tonight

    Tonight: A 50 percent chance of rain, mainly before 4am. Mostly cloudy, with a low around 31. Calm wind becoming northeast around 5 mph after midnight.

    Low: 31 °F

    Slight Chance
    Rain then
    Chance Rain

  • Thursday

    Thursday: Mostly cloudy, then gradually becoming sunny, with a high near 51. Northeast wind around 5 mph becoming calm in the morning.

    High: 51 °F

    Decreasing
    Clouds

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 32. Calm wind becoming south around 5 mph after midnight.

    Low: 32 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 64. Southwest wind 5 to 11 mph.

    High: 64 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 38. South wind 6 to 8 mph becoming north after midnight.

    Low: 38 °F

    Mostly Clear

  • Saturday

    Saturday: A 20 percent chance of rain after noon. Mostly sunny, with a high near 59.

    High: 59 °F

    Mostly Sunny
    then Slight
    Chance Rain

  • Saturday Night

    Saturday Night: A 20 percent chance of rain before midnight. Partly cloudy, with a low around 28.

    Low: 28 °F

    Slight Chance
    Rain then
    Mostly Cloudy

  • Sunday

    Sunday: A chance of rain and snow after noon. Cloudy, with a high near 41. Chance of precipitation is 40%.

    High: 41 °F

    Mostly Cloudy
    then Chance
    Rain/Snow

  • Sunday Night

    Sunday Night: Rain, snow, and freezing rain likely before midnight, then a chance of rain and snow. Cloudy, with a low around 26. Chance of precipitation is 70%.

    Low: 26 °F

    Wintry Mix
    Likely

Detailed Forecast

Tonight
A 50 percent chance of rain, mainly before 4am. Mostly cloudy, with a low around 31. Calm wind becoming northeast around 5 mph after midnight.
Thursday
Mostly cloudy, then gradually becoming sunny, with a high near 51. Northeast wind around 5 mph becoming calm in the morning.
Thursday Night
Mostly clear, with a low around 32. Calm wind becoming south around 5 mph after midnight.
Friday
Sunny, with a high near 64. Southwest wind 5 to 11 mph.
Friday Night
Mostly clear, with a low around 38. South wind 6 to 8 mph becoming north after midnight.
Saturday
A 20 percent chance of rain after noon. Mostly sunny, with a high near 59.
Saturday Night
A 20 percent chance of rain before midnight. Partly cloudy, with a low around 28.
Sunday
A chance of rain and snow after noon. Cloudy, with a high near 41. Chance of precipitation is 40%.
Sunday Night
Rain, snow, and freezing rain likely before midnight, then a chance of rain and snow. Cloudy, with a low around 26. Chance of precipitation is 70%.
Monday
A 30 percent chance of rain, mainly before noon. Mostly cloudy, with a high near 37.
Monday Night
A chance of rain or freezing rain. Cloudy, with a low around 25. Chance of precipitation is 40%.
Tuesday
A 50 percent chance of rain. Mostly cloudy, with a high near 42.
Tuesday Night
A 40 percent chance of rain. Mostly cloudy, with a low around 30.
Wednesday
A 30 percent chance of rain. Mostly cloudy, with a high near 48.
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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:
4:56 pm CST Feb 25, 2026
Forecast Valid:
5pm CST Feb 25, 2026-6pm CST Mar 4, 2026
 
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