National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Salem, Salem-Leckrone Airport (KSLO)

Lat: 38.64°NLon: 88.96°WElev: 574ft.

Partly Cloudy

65°F

18°C

Humidity 77%
Wind Speed S 6 mph
Barometer 29.97 in
Dewpoint 58°F (14°C)
Visibility 10.00 mi
Last update 17 Apr 8:15 am CDT
Extended Forecast for

Vandalia IL

  • Today

    Today: A 30 percent chance of showers and thunderstorms, mainly after 4pm. Mostly sunny, with a high near 82. South wind 6 to 16 mph, with gusts as high as 23 mph.

    High: 82 °F

    Partly Sunny
    then Chance
    T-storms

  • Tonight

    Tonight: Showers and thunderstorms likely, then showers and possibly a thunderstorm after 1am. Some of the storms could produce heavy rainfall. Low around 49. South wind around 14 mph becoming west after midnight. Winds could gust as high as 22 mph. Chance of precipitation is 100%.

    Low: 49 °F

    Chance
    T-storms then
    Heavy Rain

  • Saturday

    Saturday: Showers likely, mainly before 10am. Cloudy, then gradually becoming mostly sunny, with a high near 59. Northwest wind 14 to 17 mph. Chance of precipitation is 60%.

    High: 59 °F

    Showers
    Likely

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 37. Northwest wind 5 to 11 mph, with gusts as high as 20 mph.

    Low: 37 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 62. West wind 5 to 14 mph, with gusts as high as 21 mph.

    High: 62 °F

    Sunny

  • Sunday Night

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

    Low: 39 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 66.

    High: 66 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 49.

    Low: 49 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 76.

    High: 76 °F

    Mostly Sunny

Detailed Forecast

Today
A 30 percent chance of showers and thunderstorms, mainly after 4pm. Mostly sunny, with a high near 82. South wind 6 to 16 mph, with gusts as high as 23 mph.
Tonight
Showers and thunderstorms likely, then showers and possibly a thunderstorm after 1am. Some of the storms could produce heavy rainfall. Low around 49. South wind around 14 mph becoming west after midnight. Winds could gust as high as 22 mph. Chance of precipitation is 100%.
Saturday
Showers likely, mainly before 10am. Cloudy, then gradually becoming mostly sunny, with a high near 59. Northwest wind 14 to 17 mph. Chance of precipitation is 60%.
Saturday Night
Mostly clear, with a low around 37. Northwest wind 5 to 11 mph, with gusts as high as 20 mph.
Sunday
Sunny, with a high near 62. West wind 5 to 14 mph, with gusts as high as 21 mph.
Sunday Night
Mostly clear, with a low around 39.
Monday
Sunny, with a high near 66.
Monday Night
Mostly clear, with a low around 49.
Tuesday
Mostly sunny, with a high near 76.
Tuesday Night
Mostly clear, with a low around 55.
Wednesday
A 20 percent chance of showers and thunderstorms. Sunny, with a high near 77.
Wednesday Night
Mostly clear, with a low around 57.
Thursday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 80.
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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:
8:01 am CDT Apr 17, 2026
Forecast Valid:
8am CDT Apr 17, 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