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

56°F

13°C

Humidity 50%
Wind Speed Calm
Barometer 29.89 in
Dewpoint 38°F (3°C)
Visibility 10.00 mi
Last update 26 Feb 5:35 pm CST
Extended Forecast for

Vandalia IL

  • Tonight

    Tonight: Mostly clear, with a low around 34. Light south wind.

    Low: 34 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 66. Light south wind becoming southwest 9 to 14 mph in the morning.

    High: 66 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 37. South wind 6 to 9 mph becoming north after midnight.

    Low: 37 °F

    Mostly Clear

  • Saturday

    Saturday: A 20 percent chance of rain after noon. Mostly sunny, with a high near 59. Northeast wind around 7 mph becoming southeast in the afternoon.

    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 27. North wind 8 to 11 mph, with gusts as high as 20 mph.

    Low: 27 °F

    Slight Chance
    Rain then
    Partly Cloudy

  • Sunday

    Sunday: A chance of rain and snow after noon. Mostly cloudy, with a high near 40. Chance of precipitation is 30%.

    High: 40 °F

    Mostly Cloudy
    then Chance
    Rain/Snow

  • Sunday Night

    Sunday Night: Rain and snow. Low around 26. Chance of precipitation is 80%.

    Low: 26 °F

    Rain/Snow

  • Monday

    Monday: A slight chance of rain and snow before noon. Mostly cloudy, with a high near 39. Chance of precipitation is 20%.

    High: 39 °F

    Slight Chance
    Rain/Snow
    then Mostly
    Cloudy

  • Monday Night

    Monday Night: A 30 percent chance of rain, mainly after midnight. Mostly cloudy, with a low around 28.

    Low: 28 °F

    Chance Rain

Detailed Forecast

Tonight
Mostly clear, with a low around 34. Light south wind.
Friday
Sunny, with a high near 66. Light south wind becoming southwest 9 to 14 mph in the morning.
Friday Night
Mostly clear, with a low around 37. South wind 6 to 9 mph becoming north after midnight.
Saturday
A 20 percent chance of rain after noon. Mostly sunny, with a high near 59. Northeast wind around 7 mph becoming southeast in the afternoon.
Saturday Night
A 20 percent chance of rain before midnight. Partly cloudy, with a low around 27. North wind 8 to 11 mph, with gusts as high as 20 mph.
Sunday
A chance of rain and snow after noon. Mostly cloudy, with a high near 40. Chance of precipitation is 30%.
Sunday Night
Rain and snow. Low around 26. Chance of precipitation is 80%.
Monday
A slight chance of rain and snow before noon. Mostly cloudy, with a high near 39. Chance of precipitation is 20%.
Monday Night
A 30 percent chance of rain, mainly after midnight. Mostly cloudy, with a low around 28.
Tuesday
Rain likely, mainly after noon. Cloudy, with a high near 44. Chance of precipitation is 60%.
Tuesday Night
Rain likely. Cloudy, with a low around 35. Chance of precipitation is 60%.
Wednesday
Rain likely. Cloudy, with a high near 54. Chance of precipitation is 60%.
Wednesday Night
Rain likely. Cloudy, with a low around 46. Chance of precipitation is 60%.
Thursday
Rain likely. Mostly cloudy, with a high near 63. Chance of precipitation is 70%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Vandalia IL
 38.96°N 89.11°W (Elev. 531 ft)
Last Update:
4:51 pm CST Feb 26, 2026
Forecast Valid:
5pm CST Feb 26, 2026-6pm CST Mar 5, 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