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

70°F

21°C

Humidity 73%
Wind Speed S 10 mph
Barometer 30.03 in
Dewpoint 61°F (16°C)
Visibility 10.00 mi
Last update 13 Apr 6:55 am CDT
Extended Forecast for

Vandalia IL

  • Today

    Today: Partly sunny, with a high near 81. South wind 10 to 17 mph, with gusts as high as 25 mph.

    High: 81 °F

    Partly Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 66. South wind 14 to 16 mph, with gusts as high as 31 mph.

    Low: 66 °F

    Partly Cloudy

  • Tuesday

    Tuesday: A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 84. Southwest wind 11 to 18 mph, with gusts as high as 28 mph.

    High: 84 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 68. South wind 10 to 16 mph, with gusts as high as 26 mph. Chance of precipitation is 40%.

    Low: 68 °F

    Chance
    T-storms then
    Chance
    Showers

  • Wednesday

    Wednesday: Showers likely, with thunderstorms also possible after 10am. Mostly cloudy, with a high near 79. South wind 10 to 15 mph. Chance of precipitation is 70%.

    High: 79 °F

    Showers
    Likely

  • Wednesday Night

    Wednesday Night: Showers and possibly a thunderstorm. Low around 62. Chance of precipitation is 80%.

    Low: 62 °F

    Showers

  • Thursday

    Thursday: A 50 percent chance of showers and thunderstorms. Mostly sunny, with a high near 79.

    High: 79 °F

    Chance
    T-storms

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 60.

    Low: 60 °F

    Mostly Clear

  • Friday

    Friday: A 20 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 83.

    High: 83 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

Detailed Forecast

Today
Partly sunny, with a high near 81. South wind 10 to 17 mph, with gusts as high as 25 mph.
Tonight
Partly cloudy, with a low around 66. South wind 14 to 16 mph, with gusts as high as 31 mph.
Tuesday
A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 84. Southwest wind 11 to 18 mph, with gusts as high as 28 mph.
Tuesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 68. South wind 10 to 16 mph, with gusts as high as 26 mph. Chance of precipitation is 40%.
Wednesday
Showers likely, with thunderstorms also possible after 10am. Mostly cloudy, with a high near 79. South wind 10 to 15 mph. Chance of precipitation is 70%.
Wednesday Night
Showers and possibly a thunderstorm. Low around 62. Chance of precipitation is 80%.
Thursday
A 50 percent chance of showers and thunderstorms. Mostly sunny, with a high near 79.
Thursday Night
Mostly clear, with a low around 60.
Friday
A 20 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 83.
Friday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 61. Chance of precipitation is 70%.
Saturday
Showers and thunderstorms likely. Partly sunny, with a high near 73. Chance of precipitation is 60%.
Saturday Night
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 42.
Sunday
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:
6:46 am CDT Apr 13, 2026
Forecast Valid:
7am CDT Apr 13, 2026-6pm CDT Apr 19, 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