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

75°F

24°C

Humidity 47%
Wind Speed S 12 mph
Barometer 29.93 in
Dewpoint 54°F (12°C)
Visibility 10.00 mi
Last update 31 Mar 9:35 pm CDT
Extended Forecast for

Vandalia IL

  • Tonight

    Tonight: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 2am. Mostly cloudy, with a low around 57. Southwest wind 5 to 7 mph. Chance of precipitation is 70%.

    Low: 57 °F

    Chance
    T-storms then
    Showers
    Likely

  • Wednesday

    Wednesday: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 7am. Mostly cloudy, with a high near 70. Northeast wind around 7 mph. Chance of precipitation is 70%.

    High: 70 °F

    Showers
    Likely

  • Wednesday Night

    Wednesday Night: A 30 percent chance of showers. Mostly cloudy, with a low around 62. East wind 8 to 15 mph becoming south after midnight. Winds could gust as high as 24 mph.

    Low: 62 °F

    Chance
    Showers

  • Thursday

    Thursday: A chance of showers before 10am, then a chance of showers and thunderstorms between 10am and 1pm, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 76. Breezy, with a south wind 18 to 26 mph, with gusts as high as 36 mph. Chance of precipitation is 70%.

    High: 76 °F

    Breezy.
    Chance
    Showers then
    Showers
    Likely

  • Thursday Night

    Thursday Night: Showers and possibly a thunderstorm before 1am, then a chance of showers. Low around 60. Breezy, with a south wind 15 to 20 mph decreasing to 8 to 13 mph after midnight. Winds could gust as high as 28 mph. Chance of precipitation is 80%.

    Low: 60 °F

    Showers and
    Breezy

  • Friday

    Friday: A chance of showers and thunderstorms before 10am, then a chance of showers between 10am and 1pm, then showers likely and possibly a thunderstorm after 1pm. Partly sunny, with a high near 77. Chance of precipitation is 60%.

    High: 77 °F

    Chance
    T-storms then
    Showers
    Likely

  • Friday Night

    Friday Night: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 1am. Low around 54. Chance of precipitation is 80%.

    Low: 54 °F

    Chance
    T-storms then
    Showers

  • Saturday

    Saturday: Showers and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms after 1pm. High near 66. Chance of precipitation is 80%.

    High: 66 °F

    Showers

  • Saturday Night

    Saturday Night: A 30 percent chance of showers, mainly before 1am. Mostly cloudy, with a low around 36.

    Low: 36 °F

    Chance
    Showers

Detailed Forecast

Tonight
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 2am. Mostly cloudy, with a low around 57. Southwest wind 5 to 7 mph. Chance of precipitation is 70%.
Wednesday
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 7am. Mostly cloudy, with a high near 70. Northeast wind around 7 mph. Chance of precipitation is 70%.
Wednesday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 62. East wind 8 to 15 mph becoming south after midnight. Winds could gust as high as 24 mph.
Thursday
A chance of showers before 10am, then a chance of showers and thunderstorms between 10am and 1pm, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 76. Breezy, with a south wind 18 to 26 mph, with gusts as high as 36 mph. Chance of precipitation is 70%.
Thursday Night
Showers and possibly a thunderstorm before 1am, then a chance of showers. Low around 60. Breezy, with a south wind 15 to 20 mph decreasing to 8 to 13 mph after midnight. Winds could gust as high as 28 mph. Chance of precipitation is 80%.
Friday
A chance of showers and thunderstorms before 10am, then a chance of showers between 10am and 1pm, then showers likely and possibly a thunderstorm after 1pm. Partly sunny, with a high near 77. Chance of precipitation is 60%.
Friday Night
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 1am. Low around 54. Chance of precipitation is 80%.
Saturday
Showers and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms after 1pm. High near 66. Chance of precipitation is 80%.
Saturday Night
A 30 percent chance of showers, mainly before 1am. Mostly cloudy, with a low around 36.
Sunday
Mostly sunny, with a high near 52.
Sunday Night
Mostly clear, with a low around 32.
Monday
Sunny, with a high near 60.
Monday Night
Mostly clear, with a low around 39.
Tuesday
Sunny, with a high near 65.
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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:
8:16 pm CDT Mar 31, 2026
Forecast Valid:
9pm CDT Mar 31, 2026-6pm CDT Apr 7, 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