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

56°F

13°C

Humidity 31%
Wind Speed N 13 mph
Barometer 29.98 in
Dewpoint 26°F (-3°C)
Visibility 10.00 mi
Last update 13 Mar 6:15 pm CDT
Extended Forecast for

Vandalia IL

  • Tonight

    Tonight: Partly cloudy, with a low around 34. West wind 5 to 9 mph becoming calm.

    Low: 34 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 58. Southeast wind 6 to 11 mph.

    High: 58 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 50. Southeast wind 9 to 14 mph, with gusts as high as 24 mph.

    Low: 50 °F

    Partly Cloudy

  • Sunday

    Sunday: Rain, mainly between 1pm and 4pm, then showers and possibly a thunderstorm after 4pm. High near 67. Breezy, with a south wind 18 to 28 mph, with gusts as high as 40 mph. Chance of precipitation is 80%.

    High: 67 °F

    Breezy.
    Chance Rain
    then Showers

  • Sunday Night

    Sunday Night: Rain before 1am, then a chance of snow. Some thunder is also possible. Low around 23. Breezy, with a southwest wind 21 to 25 mph becoming west after midnight. Winds could gust as high as 40 mph. Chance of precipitation is 90%. New snow accumulation of less than one inch possible.

    Low: 23 °F

    Breezy.
    Showers then
    Rain/Snow

  • Monday

    Monday: A 40 percent chance of snow before 1pm. Mostly cloudy, with a high near 26. Breezy.

    High: 26 °F

    Chance Snow
    and Breezy

  • Monday Night

    Monday Night: Partly cloudy, with a low around 11. Blustery.

    Low: 11 °F

    Mostly Cloudy
    and Blustery
    then Mostly
    Clear

  • Tuesday

    Tuesday: Sunny, with a high near 32.

    High: 32 °F

    Sunny

  • Tuesday Night

    Tuesday Night: A slight chance of snow before 1am, then a chance of rain and snow. Mostly cloudy, with a low around 24. Chance of precipitation is 30%.

    Low: 24 °F

    Slight Chance
    Snow then
    Chance
    Rain/Snow

Detailed Forecast

Tonight
Partly cloudy, with a low around 34. West wind 5 to 9 mph becoming calm.
Saturday
Mostly sunny, with a high near 58. Southeast wind 6 to 11 mph.
Saturday Night
Partly cloudy, with a low around 50. Southeast wind 9 to 14 mph, with gusts as high as 24 mph.
Sunday
Rain, mainly between 1pm and 4pm, then showers and possibly a thunderstorm after 4pm. High near 67. Breezy, with a south wind 18 to 28 mph, with gusts as high as 40 mph. Chance of precipitation is 80%.
Sunday Night
Rain before 1am, then a chance of snow. Some thunder is also possible. Low around 23. Breezy, with a southwest wind 21 to 25 mph becoming west after midnight. Winds could gust as high as 40 mph. Chance of precipitation is 90%. New snow accumulation of less than one inch possible.
Monday
A 40 percent chance of snow before 1pm. Mostly cloudy, with a high near 26. Breezy.
Monday Night
Partly cloudy, with a low around 11. Blustery.
Tuesday
Sunny, with a high near 32.
Tuesday Night
A slight chance of snow before 1am, then a chance of rain and snow. Mostly cloudy, with a low around 24. Chance of precipitation is 30%.
Wednesday
Partly sunny, with a high near 56.
Wednesday Night
Mostly clear, with a low around 37.
Thursday
Mostly sunny, with a high near 64.
Thursday Night
Partly cloudy, with a low around 43.
Friday
Mostly sunny, with a high near 62.
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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:
6:16 pm CDT Mar 13, 2026
Forecast Valid:
6pm CDT Mar 13, 2026-6pm CDT Mar 20, 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