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.

Overcast

53°F

12°C

Humidity 87%
Wind Speed S 9 G 18 mph
Barometer 29.85 in
Dewpoint 49°F (9°C)
Visibility 10.00 mi
Wind Chill50°F (10°C)
Last update 17 Feb 2:55 pm CST
Extended Forecast for

Vandalia IL

  • Tonight

    Tonight: A slight chance of showers between midnight and 3am. Cloudy, with a low around 53. Breezy, with a south wind 16 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 20%.

    Low: 53 °F

    Breezy.
    Cloudy then
    Slight Chance
    Showers

  • Wednesday

    Wednesday: Mostly cloudy through mid morning, then gradual clearing, with a high near 69. Southwest wind 7 to 14 mph, with gusts as high as 25 mph.

    High: 69 °F

    Becoming
    Sunny

  • Wednesday Night

    Wednesday Night: A 20 percent chance of showers after midnight. Increasing clouds, with a low around 50. South wind 3 to 6 mph.

    Low: 50 °F

    Partly Cloudy
    then Slight
    Chance
    Showers

  • Thursday

    Thursday: A chance of showers, then showers likely and possibly a thunderstorm after noon. Partly sunny, with a high near 67. South wind 6 to 15 mph. Chance of precipitation is 60%.

    High: 67 °F

    Showers
    Likely

  • Thursday Night

    Thursday Night: A 20 percent chance of showers and thunderstorms before midnight. Mostly clear, with a low around 36. West wind 9 to 15 mph, with gusts as high as 23 mph.

    Low: 36 °F

    Slight Chance
    T-storms then
    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 47.

    High: 47 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 29.

    Low: 29 °F

    Partly Cloudy

  • Saturday

    Saturday: A 30 percent chance of snow after noon. Partly sunny, with a high near 42.

    High: 42 °F

    Mostly Sunny
    then Chance
    Snow

  • Saturday Night

    Saturday Night: A 40 percent chance of snow, mainly before midnight. Partly cloudy, with a low around 25.

    Low: 25 °F

    Chance Snow

Detailed Forecast

Tonight
A slight chance of showers between midnight and 3am. Cloudy, with a low around 53. Breezy, with a south wind 16 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 20%.
Wednesday
Mostly cloudy through mid morning, then gradual clearing, with a high near 69. Southwest wind 7 to 14 mph, with gusts as high as 25 mph.
Wednesday Night
A 20 percent chance of showers after midnight. Increasing clouds, with a low around 50. South wind 3 to 6 mph.
Thursday
A chance of showers, then showers likely and possibly a thunderstorm after noon. Partly sunny, with a high near 67. South wind 6 to 15 mph. Chance of precipitation is 60%.
Thursday Night
A 20 percent chance of showers and thunderstorms before midnight. Mostly clear, with a low around 36. West wind 9 to 15 mph, with gusts as high as 23 mph.
Friday
Sunny, with a high near 47.
Friday Night
Partly cloudy, with a low around 29.
Saturday
A 30 percent chance of snow after noon. Partly sunny, with a high near 42.
Saturday Night
A 40 percent chance of snow, mainly before midnight. Partly cloudy, with a low around 25.
Sunday
A 20 percent chance of snow before noon. Mostly sunny, with a high near 35.
Sunday Night
Mostly clear, with a low around 19.
Monday
Mostly sunny, with a high near 35.
Monday Night
Partly cloudy, with a low around 18.
Tuesday
Mostly sunny, with a high near 43.
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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:
1:36 pm CST Feb 17, 2026
Forecast Valid:
3pm CST Feb 17, 2026-6pm CST Feb 24, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation