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.

Fair

65°F

18°C

Humidity 81%
Wind Speed N 8 mph
Barometer 29.96 in
Dewpoint 59°F (15°C)
Visibility 10.00 mi
Last update 1 Apr 4:55 pm CDT
Extended Forecast for

Vandalia IL

  • This Afternoon

    This Afternoon: A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 58. Northeast wind around 7 mph.

    High: 58 °F

    Chance
    T-storms

  • Tonight

    Tonight: A chance of showers and thunderstorms before 3am, then a slight chance of showers between 3am and 4am. Mostly cloudy, with a temperature falling to near 55 by 8pm, then rising to around 64 during the remainder of the night. Northeast wind 8 to 11 mph becoming south after midnight. Winds could gust as high as 22 mph. Chance of precipitation is 50%.

    Low: 55 °F⇑

    Chance
    T-storms

  • Thursday

    Thursday: A slight chance of showers between noon and 1pm, then a chance of showers and thunderstorms after 1pm. Cloudy, with a high near 75. Breezy, with a south wind 16 to 26 mph, with gusts as high as 38 mph. Chance of precipitation is 50%.

    High: 75 °F

    Breezy.
    Mostly Cloudy
    then Chance
    T-storms

  • Thursday Night

    Thursday Night: Showers likely and possibly a thunderstorm. Partly cloudy, with a low around 62. Breezy, with a south wind 16 to 21 mph decreasing to 10 to 15 mph after midnight. Winds could gust as high as 32 mph. Chance of precipitation is 70%.

    Low: 62 °F

    Showers
    Likely and
    Breezy

  • Friday

    Friday: A chance of showers, with thunderstorms also possible after 10am. Partly sunny, with a high near 78. South wind 8 to 16 mph, with gusts as high as 23 mph. Chance of precipitation is 50%.

    High: 78 °F

    Chance
    Showers then
    Chance
    T-storms

  • Friday Night

    Friday Night: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 1am. Low around 56. Chance of precipitation is 80%.

    Low: 56 °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 64. Chance of precipitation is 80%.

    High: 64 °F

    Showers

  • Saturday Night

    Saturday Night: A 20 percent chance of showers before 1am. Mostly cloudy, with a low around 38.

    Low: 38 °F

    Slight Chance
    Showers

  • Sunday

    Sunday: Sunny, with a high near 55.

    High: 55 °F

    Sunny

Detailed Forecast

This Afternoon
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 58. Northeast wind around 7 mph.
Tonight
A chance of showers and thunderstorms before 3am, then a slight chance of showers between 3am and 4am. Mostly cloudy, with a temperature falling to near 55 by 8pm, then rising to around 64 during the remainder of the night. Northeast wind 8 to 11 mph becoming south after midnight. Winds could gust as high as 22 mph. Chance of precipitation is 50%.
Thursday
A slight chance of showers between noon and 1pm, then a chance of showers and thunderstorms after 1pm. Cloudy, with a high near 75. Breezy, with a south wind 16 to 26 mph, with gusts as high as 38 mph. Chance of precipitation is 50%.
Thursday Night
Showers likely and possibly a thunderstorm. Partly cloudy, with a low around 62. Breezy, with a south wind 16 to 21 mph decreasing to 10 to 15 mph after midnight. Winds could gust as high as 32 mph. Chance of precipitation is 70%.
Friday
A chance of showers, with thunderstorms also possible after 10am. Partly sunny, with a high near 78. South wind 8 to 16 mph, with gusts as high as 23 mph. Chance of precipitation is 50%.
Friday Night
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 1am. Low around 56. Chance of precipitation is 80%.
Saturday
Showers and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms after 1pm. High near 64. Chance of precipitation is 80%.
Saturday Night
A 20 percent chance of showers before 1am. Mostly cloudy, with a low around 38.
Sunday
Sunny, with a high near 55.
Sunday Night
Clear, with a low around 36.
Monday
Sunny, with a high near 61.
Monday Night
Partly cloudy, with a low around 38.
Tuesday
Mostly sunny, with a high near 55.
Tuesday Night
Partly cloudy, with a low around 35.
Wednesday
Mostly sunny, with a high near 64.
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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:
1:51 pm CDT Apr 1, 2026
Forecast Valid:
5pm CDT Apr 1, 2026-6pm CDT Apr 8, 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