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.

Thunderstorm in Vicinity

75°F

24°C

Humidity 88%
Wind Speed NA
Barometer 29.95 in
Dewpoint 71°F (22°C)
Visibility 10.00 mi
Last update 14 Oct 5:55 am CDT
Extended Forecast for

Vandalia IL

  • Today

    Today: Showers and possibly a thunderstorm, mainly before 1pm, then a chance of showers and thunderstorms after 1pm. High near 78. West wind around 5 mph becoming calm in the afternoon. Chance of precipitation is 80%.

    High: 78 °F

    Showers

  • Tonight

    Tonight: A slight chance of showers, then a chance of showers and thunderstorms after 1am. Partly cloudy during the early evening, then becoming cloudy, with a low around 63. Northeast wind 3 to 8 mph. Chance of precipitation is 40%.

    Low: 63 °F

    Chance
    Showers

  • Thursday

    Thursday: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 10am. Mostly cloudy, with a high near 82. East wind 6 to 9 mph becoming southwest in the afternoon. Chance of precipitation is 70%.

    High: 82 °F

    Showers
    Likely

  • Thursday Night

    Thursday Night: Showers and possibly a thunderstorm before 1am, then a chance of showers. Low around 48. Southwest wind 6 to 16 mph becoming northwest after midnight. Winds could gust as high as 25 mph. Chance of precipitation is 80%.

    Low: 48 °F

    Showers

  • Friday

    Friday: Partly sunny, with a high near 60. Breezy, with a northwest wind 17 to 21 mph, with gusts as high as 31 mph.

    High: 60 °F

    Partly Sunny
    and Breezy

  • Friday Night

    Friday Night: Mostly clear, with a low around 37.

    Low: 37 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 62.

    High: 62 °F

    Sunny

  • Saturday Night

    Saturday Night: Clear, with a low around 36.

    Low: 36 °F

    Clear

  • Sunday

    Sunday: Sunny, with a high near 70.

    High: 70 °F

    Sunny

Detailed Forecast

Today
Showers and possibly a thunderstorm, mainly before 1pm, then a chance of showers and thunderstorms after 1pm. High near 78. West wind around 5 mph becoming calm in the afternoon. Chance of precipitation is 80%.
Tonight
A slight chance of showers, then a chance of showers and thunderstorms after 1am. Partly cloudy during the early evening, then becoming cloudy, with a low around 63. Northeast wind 3 to 8 mph. Chance of precipitation is 40%.
Thursday
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 10am. Mostly cloudy, with a high near 82. East wind 6 to 9 mph becoming southwest in the afternoon. Chance of precipitation is 70%.
Thursday Night
Showers and possibly a thunderstorm before 1am, then a chance of showers. Low around 48. Southwest wind 6 to 16 mph becoming northwest after midnight. Winds could gust as high as 25 mph. Chance of precipitation is 80%.
Friday
Partly sunny, with a high near 60. Breezy, with a northwest wind 17 to 21 mph, with gusts as high as 31 mph.
Friday Night
Mostly clear, with a low around 37.
Saturday
Sunny, with a high near 62.
Saturday Night
Clear, with a low around 36.
Sunday
Sunny, with a high near 70.
Sunday Night
Partly cloudy, with a low around 42.
Monday
Partly sunny, with a high near 71.
Monday Night
Partly cloudy, with a low around 46.
Tuesday
Mostly sunny, with a high near 77.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Vandalia IL
 38.98°N 89.1°W (Elev. 499 ft)
Last Update:
5:06 am CDT Oct 14, 2026
Forecast Valid:
6am CDT Oct 14, 2026-6pm CDT Oct 20, 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