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.

Mostly Cloudy

78°F

26°C

Humidity 63%
Wind Speed SW 15 G 24 mph
Barometer 29.92 in
Dewpoint 64°F (18°C)
Visibility 10.00 mi
Heat Index80°F (27°C)
Last update 15 Apr 9:55 am CDT
Extended Forecast for

Vandalia IL

  • Today

    Today: Showers and thunderstorms likely, mainly before 1pm. Cloudy, with a high near 81. Southwest wind 13 to 15 mph, with gusts as high as 22 mph. Chance of precipitation is 70%.

    High: 81 °F

    Showers
    Likely then
    Chance
    T-storms

  • Tonight

    Tonight: Showers and thunderstorms. Low around 62. South wind around 10 mph. Chance of precipitation is 90%.

    Low: 62 °F

    Showers

  • Thursday

    Thursday: Showers likely, with thunderstorms also possible after 1pm. Cloudy through mid morning, then gradual clearing, with a high near 79. Southwest wind 9 to 13 mph, with gusts as high as 20 mph. Chance of precipitation is 60%.

    High: 79 °F

    Showers
    Likely then
    Chance
    T-storms

  • Thursday Night

    Thursday Night: A chance of thunderstorms before 7pm. Mostly clear, with a low around 57. Southwest wind around 6 mph becoming calm in the evening. Chance of precipitation is 30%.

    Low: 57 °F

    Chance
    T-storms then
    Mostly Clear

  • Friday

    Friday: A 30 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 83. Light south wind increasing to 9 to 14 mph in the morning. Winds could gust as high as 21 mph.

    High: 83 °F

    Mostly Sunny
    then Chance
    T-storms

  • Friday Night

    Friday Night: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 1am. Low around 55. Chance of precipitation is 80%.

    Low: 55 °F

    Chance
    T-storms then
    Showers

  • Saturday

    Saturday: A chance of showers and thunderstorms. Partly sunny, with a high near 67. Chance of precipitation is 50%.

    High: 67 °F

    Chance
    T-storms

  • Saturday Night

    Saturday Night: A slight chance of rain showers before 4am, then a slight chance of rain and snow showers. Partly cloudy, with a low around 38. Chance of precipitation is 20%.

    Low: 38 °F

    Slight Chance
    Showers then
    Slight Chance
    Rain/Snow

  • Sunday

    Sunday: Sunny, with a high near 59.

    High: 59 °F

    Sunny

Detailed Forecast

Today
Showers and thunderstorms likely, mainly before 1pm. Cloudy, with a high near 81. Southwest wind 13 to 15 mph, with gusts as high as 22 mph. Chance of precipitation is 70%.
Tonight
Showers and thunderstorms. Low around 62. South wind around 10 mph. Chance of precipitation is 90%.
Thursday
Showers likely, with thunderstorms also possible after 1pm. Cloudy through mid morning, then gradual clearing, with a high near 79. Southwest wind 9 to 13 mph, with gusts as high as 20 mph. Chance of precipitation is 60%.
Thursday Night
A chance of thunderstorms before 7pm. Mostly clear, with a low around 57. Southwest wind around 6 mph becoming calm in the evening. Chance of precipitation is 30%.
Friday
A 30 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 83. Light south wind increasing to 9 to 14 mph in the morning. Winds could gust as high as 21 mph.
Friday Night
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 1am. Low around 55. Chance of precipitation is 80%.
Saturday
A chance of showers and thunderstorms. Partly sunny, with a high near 67. Chance of precipitation is 50%.
Saturday Night
A slight chance of rain showers before 4am, then a slight chance of rain and snow showers. Partly cloudy, with a low around 38. Chance of precipitation is 20%.
Sunday
Sunny, with a high near 59.
Sunday Night
Clear, with a low around 38.
Monday
Sunny, with a high near 66.
Monday Night
Mostly clear, with a low around 48.
Tuesday
Mostly sunny, with a high near 73.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Vandalia IL
 38.96°N 89.11°W (Elev. 531 ft)
Last Update:
9:21 am CDT Apr 15, 2026
Forecast Valid:
9am CDT Apr 15, 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