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.

Mostly Cloudy

31°F

-1°C

Humidity 30%
Wind Speed S 12 G 18 mph
Barometer 30.41 in
Dewpoint 2°F (-17°C)
Visibility 10.00 mi
Wind Chill22°F (-6°C)
Last update 20 Jan 12:35 pm CST
Extended Forecast for

Vandalia IL

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 31. South wind 9 to 13 mph, with gusts as high as 23 mph.

    High: 31 °F

    Mostly Sunny

  • Tonight

    Tonight: Increasing clouds, with a low around 25. South wind 8 to 14 mph, with gusts as high as 24 mph.

    Low: 25 °F

    Increasing
    Clouds

  • Wednesday

    Wednesday: Cloudy through mid morning, then gradual clearing, with a high near 43. West wind 7 to 14 mph, with gusts as high as 24 mph.

    High: 43 °F

    Becoming
    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 22. Southwest wind 5 to 9 mph becoming northwest after midnight.

    Low: 22 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 35. Northwest wind 3 to 6 mph.

    High: 35 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 10.

    Low: 10 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly cloudy and cold, with a high near 15.

    High: 15 °F

    Cold

  • Friday Night

    Friday Night: A 30 percent chance of snow, mainly after midnight. Mostly cloudy, with a low around 2.

    Low: 2 °F

    Chance Snow

  • Saturday

    Saturday: A 40 percent chance of snow, mainly after noon. Mostly cloudy and cold, with a high near 14.

    High: 14 °F

    Chance Snow

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 31. South wind 9 to 13 mph, with gusts as high as 23 mph.
Tonight
Increasing clouds, with a low around 25. South wind 8 to 14 mph, with gusts as high as 24 mph.
Wednesday
Cloudy through mid morning, then gradual clearing, with a high near 43. West wind 7 to 14 mph, with gusts as high as 24 mph.
Wednesday Night
Mostly clear, with a low around 22. Southwest wind 5 to 9 mph becoming northwest after midnight.
Thursday
Mostly sunny, with a high near 35. Northwest wind 3 to 6 mph.
Thursday Night
Mostly cloudy, with a low around 10.
Friday
Mostly cloudy and cold, with a high near 15.
Friday Night
A 30 percent chance of snow, mainly after midnight. Mostly cloudy, with a low around 2.
Saturday
A 40 percent chance of snow, mainly after noon. Mostly cloudy and cold, with a high near 14.
Saturday Night
A 30 percent chance of snow, mainly before midnight. Mostly cloudy, with a low around 6.
Sunday
Mostly sunny, with a high near 21.
Sunday Night
Partly cloudy, with a low around 5.
Monday
Sunny, with a high near 24.
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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:
10:51 am CST Jan 20, 2026
Forecast Valid:
1pm CST Jan 20, 2026-6pm CST Jan 26, 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