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

72°F

22°C

Humidity 65%
Wind Speed S 9 mph
Barometer 29.93 in
Dewpoint 59°F (15°C)
Visibility 10.00 mi
Last update 16 Apr 8:35 pm CDT
Extended Forecast for

Vandalia IL

  • Tonight

    Tonight: Mostly clear, with a low around 57. Calm wind.

    Low: 57 °F

    Mostly Clear

  • Friday

    Friday: Mostly sunny, with a high near 82. South wind 5 to 15 mph, with gusts as high as 22 mph.

    High: 82 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Showers and thunderstorms likely, then showers and possibly a thunderstorm after 1am. Low around 50. South wind around 14 mph, with gusts as high as 22 mph. Chance of precipitation is 100%.

    Low: 50 °F

    T-storms
    Likely then
    T-storms

  • Saturday

    Saturday: Showers likely, mainly before 1pm. Partly sunny, with a steady temperature around 55. Northwest wind 14 to 17 mph. Chance of precipitation is 60%.

    High: 55 °F

    Showers
    Likely

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 37. Northwest wind 6 to 13 mph, with gusts as high as 20 mph.

    Low: 37 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 62.

    High: 62 °F

    Sunny

  • Sunday Night

    Sunday Night: Clear, with a low around 38.

    Low: 38 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 67.

    High: 67 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 50.

    Low: 50 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly clear, with a low around 57. Calm wind.
Friday
Mostly sunny, with a high near 82. South wind 5 to 15 mph, with gusts as high as 22 mph.
Friday Night
Showers and thunderstorms likely, then showers and possibly a thunderstorm after 1am. Low around 50. South wind around 14 mph, with gusts as high as 22 mph. Chance of precipitation is 100%.
Saturday
Showers likely, mainly before 1pm. Partly sunny, with a steady temperature around 55. Northwest wind 14 to 17 mph. Chance of precipitation is 60%.
Saturday Night
Mostly clear, with a low around 37. Northwest wind 6 to 13 mph, with gusts as high as 20 mph.
Sunday
Sunny, with a high near 62.
Sunday Night
Clear, with a low around 38.
Monday
Sunny, with a high near 67.
Monday Night
Mostly clear, with a low around 50.
Tuesday
Mostly sunny, with a high near 75.
Tuesday Night
Partly cloudy, with a low around 54.
Wednesday
Mostly sunny, with a high near 75.
Wednesday Night
A 20 percent chance of showers. Mostly clear, with a low around 54.
Thursday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 76.
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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:
7:06 pm CDT Apr 16, 2026
Forecast Valid:
8pm CDT Apr 16, 2026-6pm CDT Apr 23, 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