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.

Fair

38°F

3°C

Humidity 71%
Wind Speed Calm
Barometer 29.70 in
Dewpoint 29°F (-2°C)
Visibility 10.00 mi
Last update 25 Feb 6:15 am CST
Extended Forecast for

Vandalia IL

  • Today

    Today: Mostly cloudy, with a high near 49. Calm wind becoming northwest around 5 mph.

    High: 49 °F

    Mostly Cloudy

  • Tonight

    Tonight: A chance of rain after 8pm, mixing with snow after 4am. Mostly cloudy, with a low around 32. Calm wind becoming northeast around 5 mph after midnight. Chance of precipitation is 50%.

    Low: 32 °F

    Chance Rain
    then Chance
    Rain/Snow

  • Thursday

    Thursday: A 20 percent chance of rain before 7am. Mostly sunny, with a high near 51. Northwest wind around 6 mph becoming calm in the afternoon.

    High: 51 °F

    Slight Chance
    Rain then
    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 32. Light south wind.

    Low: 32 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 63. Light south wind becoming southwest 5 to 10 mph in the morning.

    High: 63 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 39.

    Low: 39 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 59.

    High: 59 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: A 20 percent chance of rain. Partly cloudy, with a low around 30.

    Low: 30 °F

    Slight Chance
    Rain

  • Sunday

    Sunday: A slight chance of rain before noon, then a chance of rain and snow. Mostly cloudy, with a high near 43. Chance of precipitation is 30%.

    High: 43 °F

    Slight Chance
    Rain then
    Chance
    Rain/Snow

Detailed Forecast

Today
Mostly cloudy, with a high near 49. Calm wind becoming northwest around 5 mph.
Tonight
A chance of rain after 8pm, mixing with snow after 4am. Mostly cloudy, with a low around 32. Calm wind becoming northeast around 5 mph after midnight. Chance of precipitation is 50%.
Thursday
A 20 percent chance of rain before 7am. Mostly sunny, with a high near 51. Northwest wind around 6 mph becoming calm in the afternoon.
Thursday Night
Mostly clear, with a low around 32. Light south wind.
Friday
Sunny, with a high near 63. Light south wind becoming southwest 5 to 10 mph in the morning.
Friday Night
Mostly clear, with a low around 39.
Saturday
Mostly sunny, with a high near 59.
Saturday Night
A 20 percent chance of rain. Partly cloudy, with a low around 30.
Sunday
A slight chance of rain before noon, then a chance of rain and snow. Mostly cloudy, with a high near 43. Chance of precipitation is 30%.
Sunday Night
Rain and snow likely, mainly before midnight. Mostly cloudy, with a low around 29. Chance of precipitation is 60%.
Monday
A 40 percent chance of rain. Mostly cloudy, with a high near 39.
Monday Night
A 40 percent chance of rain and thunderstorms. Mostly cloudy, with a low around 28.
Tuesday
A 50 percent chance of rain. Mostly cloudy, with a high near 43.
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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:
5:26 am CST Feb 25, 2026
Forecast Valid:
6am CST Feb 25, 2026-6pm CST Mar 3, 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