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

49°F

9°C

Humidity 39%
Wind Speed W 15 G 21 mph
Barometer 30.03 in
Dewpoint 25°F (-4°C)
Visibility 10.00 mi
Wind Chill43°F (6°C)
Last update 21 Jan 12:55 pm CST
Extended Forecast for

Vandalia IL

  • This Afternoon

    This Afternoon: Sunny, with a high near 45. West wind 9 to 14 mph, with gusts as high as 24 mph.

    High: 45 °F

    Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 21. Southwest wind 6 to 11 mph becoming northwest after midnight. Winds could gust as high as 24 mph.

    Low: 21 °F

    Partly Cloudy

  • Thursday

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

    High: 35 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 7. Light and variable wind becoming north 10 to 15 mph after midnight. Winds could gust as high as 24 mph.

    Low: 7 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly cloudy and cold, with a high near 12. North wind 11 to 15 mph, with gusts as high as 23 mph.

    High: 12 °F

    Cold

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 0.

    Low: 0 °F

    Mostly Cloudy

  • Saturday

    Saturday: A 50 percent chance of snow, mainly after noon. Cloudy and cold, with a high near 13.

    High: 13 °F

    Slight Chance
    Snow then
    Chance Snow

  • Saturday Night

    Saturday Night: A 50 percent chance of snow. Mostly cloudy, with a low around 7.

    Low: 7 °F

    Chance Snow

  • Sunday

    Sunday: A 20 percent chance of snow. Partly sunny and cold, with a high near 18.

    High: 18 °F

    Slight Chance
    Snow

Detailed Forecast

This Afternoon
Sunny, with a high near 45. West wind 9 to 14 mph, with gusts as high as 24 mph.
Tonight
Partly cloudy, with a low around 21. Southwest wind 6 to 11 mph becoming northwest after midnight. Winds could gust as high as 24 mph.
Thursday
Partly sunny, with a high near 35. Northwest wind 3 to 6 mph.
Thursday Night
Mostly cloudy, with a low around 7. Light and variable wind becoming north 10 to 15 mph after midnight. Winds could gust as high as 24 mph.
Friday
Mostly cloudy and cold, with a high near 12. North wind 11 to 15 mph, with gusts as high as 23 mph.
Friday Night
Mostly cloudy, with a low around 0.
Saturday
A 50 percent chance of snow, mainly after noon. Cloudy and cold, with a high near 13.
Saturday Night
A 50 percent chance of snow. Mostly cloudy, with a low around 7.
Sunday
A 20 percent chance of snow. Partly sunny and cold, with a high near 18.
Sunday Night
Partly cloudy, with a low around 3.
Monday
Sunny and cold, with a high near 20.
Monday Night
Mostly clear, with a low around 7.
Tuesday
Mostly sunny, with a high near 31.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Vandalia IL
 38.96°N 89.11°W (Elev. 531 ft)
Last Update:
10:57 am CST Jan 21, 2026
Forecast Valid:
1pm CST Jan 21, 2026-6pm CST Jan 27, 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