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

61°F

16°C

Humidity 39%
Wind Speed W 17 G 23 mph
Barometer 30.23 in
Dewpoint 36°F (2°C)
Visibility 10.00 mi
Last update 19 Apr 12:35 pm CDT
Extended Forecast for

Vandalia IL

  • This Afternoon

    This Afternoon: Increasing clouds, with a high near 63. Southwest wind 6 to 16 mph becoming west. Winds could gust as high as 23 mph.

    High: 63 °F

    Increasing
    Clouds

  • Tonight

    Tonight: Partly cloudy, with a low around 37. Northwest wind 5 to 8 mph becoming calm after midnight.

    Low: 37 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 63. Light and variable wind.

    High: 63 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 47. South wind 5 to 7 mph.

    Low: 47 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 75. Southwest wind 8 to 16 mph, with gusts as high as 23 mph.

    High: 75 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 56.

    Low: 56 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 76.

    High: 76 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 57.

    Low: 57 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 78.

    High: 78 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Increasing clouds, with a high near 63. Southwest wind 6 to 16 mph becoming west. Winds could gust as high as 23 mph.
Tonight
Partly cloudy, with a low around 37. Northwest wind 5 to 8 mph becoming calm after midnight.
Monday
Sunny, with a high near 63. Light and variable wind.
Monday Night
Mostly clear, with a low around 47. South wind 5 to 7 mph.
Tuesday
Sunny, with a high near 75. Southwest wind 8 to 16 mph, with gusts as high as 23 mph.
Tuesday Night
Mostly clear, with a low around 56.
Wednesday
Sunny, with a high near 76.
Wednesday Night
Mostly clear, with a low around 57.
Thursday
Mostly sunny, with a high near 78.
Thursday Night
A slight chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 61. Chance of precipitation is 70%.
Friday
Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 74. Chance of precipitation is 70%.
Friday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 52.
Saturday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 68.
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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:
12:31 pm CDT Apr 19, 2026
Forecast Valid:
12pm CDT Apr 19, 2026-6pm CDT Apr 25, 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