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

58°F

14°C

Humidity 39%
Wind Speed NW 12 mph
Barometer 30.26 in
Dewpoint 33°F (1°C)
Visibility 10.00 mi
Last update 5 Apr 5:15 pm CDT
Extended Forecast for

Vandalia IL

  • Tonight

    Tonight: Clear, with a low around 39. Northwest wind 5 to 10 mph becoming light and variable.

    Low: 39 °F

    Clear

  • Monday

    Monday: Mostly sunny, with a high near 59. Northwest wind 7 to 13 mph, with gusts as high as 21 mph.

    High: 59 °F

    Mostly Sunny

  • Monday Night

    Monday Night: A 20 percent chance of showers after 1am. Mostly cloudy, with a low around 36. North wind 7 to 10 mph, with gusts as high as 20 mph.

    Low: 36 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 50. East wind around 8 mph.

    High: 50 °F

    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 38. Southeast wind 6 to 8 mph.

    Low: 38 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 69.

    High: 69 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 53.

    Low: 53 °F

    Partly Cloudy

  • Thursday

    Thursday: A slight chance of showers, with thunderstorms also possible after 1pm. Mostly sunny, with a high near 69. Chance of precipitation is 20%.

    High: 69 °F

    Slight Chance
    Showers then
    Slight Chance
    T-storms

  • Thursday Night

    Thursday Night: A slight chance of showers and thunderstorms, then a chance of showers after 1am. Mostly cloudy, with a low around 55. Chance of precipitation is 30%.

    Low: 55 °F

    Slight Chance
    T-storms then
    Chance
    Showers

Detailed Forecast

Tonight
Clear, with a low around 39. Northwest wind 5 to 10 mph becoming light and variable.
Monday
Mostly sunny, with a high near 59. Northwest wind 7 to 13 mph, with gusts as high as 21 mph.
Monday Night
A 20 percent chance of showers after 1am. Mostly cloudy, with a low around 36. North wind 7 to 10 mph, with gusts as high as 20 mph.
Tuesday
Mostly cloudy, with a high near 50. East wind around 8 mph.
Tuesday Night
Partly cloudy, with a low around 38. Southeast wind 6 to 8 mph.
Wednesday
Mostly sunny, with a high near 69.
Wednesday Night
Partly cloudy, with a low around 53.
Thursday
A slight chance of showers, with thunderstorms also possible after 1pm. Mostly sunny, with a high near 69. Chance of precipitation is 20%.
Thursday Night
A slight chance of showers and thunderstorms, then a chance of showers after 1am. Mostly cloudy, with a low around 55. Chance of precipitation is 30%.
Friday
A chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 73. Chance of precipitation is 40%.
Friday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 55.
Saturday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 76.
Saturday Night
A 20 percent chance of showers. Mostly cloudy, with a low around 60.
Sunday
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 79.
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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:
1:26 pm CDT Apr 5, 2026
Forecast Valid:
5pm CDT Apr 5, 2026-6pm CDT Apr 12, 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