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

62°F

17°C

Humidity 43%
Wind Speed S 12 G 18 mph
Barometer 29.88 in
Dewpoint 39°F (4°C)
Visibility 10.00 mi
Last update 27 Feb 7:35 pm CST
Extended Forecast for

Vandalia IL

  • Tonight

    Tonight: Mostly clear, with a low around 35. Southwest wind 5 to 8 mph becoming light and variable.

    Low: 35 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 62. Northeast wind 6 to 8 mph becoming south in the afternoon.

    High: 62 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: A 20 percent chance of rain before midnight. Partly cloudy, with a low around 29. Southeast wind 5 to 11 mph becoming north in the evening. Winds could gust as high as 20 mph.

    Low: 29 °F

    Slight Chance
    Rain then
    Mostly Clear

  • Sunday

    Sunday: Increasing clouds, with a high near 44. Northeast wind 8 to 11 mph.

    High: 44 °F

    Increasing
    Clouds

  • Sunday Night

    Sunday Night: Rain and snow likely. Cloudy, with a low around 30. East wind 8 to 10 mph. Chance of precipitation is 70%. New snow accumulation of less than one inch possible.

    Low: 30 °F

    Rain/Snow
    Likely

  • Monday

    Monday: A chance of rain, snow, and freezing rain before noon, then a slight chance of rain. Cloudy, with a high near 42. Chance of precipitation is 40%.

    High: 42 °F

    Chance Wintry
    Mix then
    Slight Chance
    Rain

  • Monday Night

    Monday Night: Rain likely, mainly after midnight. Cloudy, with a low around 36. Chance of precipitation is 60%.

    Low: 36 °F

    Rain Likely

  • Tuesday

    Tuesday: Rain and possibly a thunderstorm. High near 55. Chance of precipitation is 80%.

    High: 55 °F

    Rain

  • Tuesday Night

    Tuesday Night: Rain, with thunderstorms also possible after midnight. Low around 45. Chance of precipitation is 80%.

    Low: 45 °F

    Rain

Detailed Forecast

Tonight
Mostly clear, with a low around 35. Southwest wind 5 to 8 mph becoming light and variable.
Saturday
Mostly sunny, with a high near 62. Northeast wind 6 to 8 mph becoming south in the afternoon.
Saturday Night
A 20 percent chance of rain before midnight. Partly cloudy, with a low around 29. Southeast wind 5 to 11 mph becoming north in the evening. Winds could gust as high as 20 mph.
Sunday
Increasing clouds, with a high near 44. Northeast wind 8 to 11 mph.
Sunday Night
Rain and snow likely. Cloudy, with a low around 30. East wind 8 to 10 mph. Chance of precipitation is 70%. New snow accumulation of less than one inch possible.
Monday
A chance of rain, snow, and freezing rain before noon, then a slight chance of rain. Cloudy, with a high near 42. Chance of precipitation is 40%.
Monday Night
Rain likely, mainly after midnight. Cloudy, with a low around 36. Chance of precipitation is 60%.
Tuesday
Rain and possibly a thunderstorm. High near 55. Chance of precipitation is 80%.
Tuesday Night
Rain, with thunderstorms also possible after midnight. Low around 45. Chance of precipitation is 80%.
Wednesday
Rain likely and possibly a thunderstorm. Cloudy, with a high near 61. Chance of precipitation is 70%.
Wednesday Night
Rain likely and possibly a thunderstorm. Mostly cloudy, with a low around 50. Chance of precipitation is 70%.
Thursday
Rain likely. Mostly cloudy, with a high near 63. Chance of precipitation is 70%.
Thursday Night
A 50 percent chance of rain and thunderstorms. Mostly cloudy, with a low around 51.
Friday
Rain likely and possibly a thunderstorm. Mostly cloudy, with a high near 68. Chance of precipitation is 70%.
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ABOUT THIS FORECAST

 
Point Forecast:
Vandalia IL
 38.96°N 89.11°W (Elev. 531 ft)
Last Update:
5:06 pm CST Feb 27, 2026
Forecast Valid:
7pm CST Feb 27, 2026-6pm CST Mar 6, 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