National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Salem, Salem-Leckrone Airport (KSLO)

Lat: 38.64°NLon: 88.96°WElev: 574ft.

Partly Cloudy

84°F

29°C

Humidity 51%
Wind Speed S 17 G 30 mph
Barometer 29.86 in
Dewpoint 64°F (18°C)
Visibility 10.00 mi
Heat Index85°F (29°C)
Last update 14 Apr 6:15 pm CDT
Extended Forecast for

Vandalia IL

  • Tonight

    Tonight: Isolated showers and thunderstorms between 8pm and 9pm. Mostly cloudy, with a low around 68. South wind 10 to 15 mph, with gusts as high as 28 mph. Chance of precipitation is 20%.

    Low: 68 °F

    Isolated
    T-storms then
    Mostly Cloudy

  • Wednesday

    Wednesday: Showers and thunderstorms likely, mainly after 5pm. Mostly cloudy, with a high near 79. Southwest wind 10 to 16 mph, with gusts as high as 23 mph. Chance of precipitation is 60%.

    High: 79 °F

    T-storms
    Likely

  • Wednesday Night

    Wednesday Night: Showers and thunderstorms likely before 1am, then showers and possibly a thunderstorm between 1am and 4am, then showers after 4am. Low around 62. Southwest wind 9 to 11 mph. Chance of precipitation is 80%.

    Low: 62 °F

    T-storms
    Likely then
    Showers

  • Thursday

    Thursday: Showers likely, with thunderstorms also possible after 7am. Mostly cloudy, then gradually becoming sunny, with a high near 77. Southwest wind 9 to 13 mph. Chance of precipitation is 70%.

    High: 77 °F

    Showers
    Likely

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 58. South wind 3 to 6 mph.

    Low: 58 °F

    Mostly Clear

  • Friday

    Friday: A 30 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 82.

    High: 82 °F

    Mostly Sunny
    then Chance
    T-storms

  • Friday Night

    Friday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 58. Chance of precipitation is 70%.

    Low: 58 °F

    Chance
    T-storms then
    Showers
    Likely

  • Saturday

    Saturday: Showers likely and possibly a thunderstorm before 1pm, then a chance of showers. Partly sunny, with a high near 71. Chance of precipitation is 70%.

    High: 71 °F

    Showers
    Likely

  • Saturday Night

    Saturday Night: A 20 percent chance of showers before 1am. Partly cloudy, with a low around 40.

    Low: 40 °F

    Slight Chance
    Showers

Detailed Forecast

Tonight
Isolated showers and thunderstorms between 8pm and 9pm. Mostly cloudy, with a low around 68. South wind 10 to 15 mph, with gusts as high as 28 mph. Chance of precipitation is 20%.
Wednesday
Showers and thunderstorms likely, mainly after 5pm. Mostly cloudy, with a high near 79. Southwest wind 10 to 16 mph, with gusts as high as 23 mph. Chance of precipitation is 60%.
Wednesday Night
Showers and thunderstorms likely before 1am, then showers and possibly a thunderstorm between 1am and 4am, then showers after 4am. Low around 62. Southwest wind 9 to 11 mph. Chance of precipitation is 80%.
Thursday
Showers likely, with thunderstorms also possible after 7am. Mostly cloudy, then gradually becoming sunny, with a high near 77. Southwest wind 9 to 13 mph. Chance of precipitation is 70%.
Thursday Night
Mostly clear, with a low around 58. South wind 3 to 6 mph.
Friday
A 30 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 82.
Friday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 58. Chance of precipitation is 70%.
Saturday
Showers likely and possibly a thunderstorm before 1pm, then a chance of showers. Partly sunny, with a high near 71. Chance of precipitation is 70%.
Saturday Night
A 20 percent chance of showers before 1am. Partly cloudy, with a low around 40.
Sunday
Sunny, with a high near 58.
Sunday Night
Mostly clear, with a low around 37.
Monday
Sunny, with a high near 64.
Monday Night
Mostly clear, with a low around 44.
Tuesday
Sunny, with a high near 69.
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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:
5:41 pm CDT Apr 14, 2026
Forecast Valid:
6pm CDT Apr 14, 2026-6pm CDT Apr 21, 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