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

70°F

21°C

Humidity 77%
Wind Speed S 10 mph
Barometer 29.96 in
Dewpoint 62°F (17°C)
Visibility 10.00 mi
Last update 6 Mar 8:55 pm CST
Extended Forecast for

Vandalia IL

  • Tonight

    Tonight: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 3am. Low around 61. South wind 10 to 16 mph, with gusts as high as 36 mph. Chance of precipitation is 100%.

    Low: 61 °F

    Mostly Clear
    then Showers

  • Saturday

    Saturday: Showers and possibly a thunderstorm before 11am, then a slight chance of showers between 11am and 1pm. High near 68. Southwest wind 9 to 17 mph becoming northwest in the afternoon. Winds could gust as high as 30 mph. Chance of precipitation is 100%.

    High: 68 °F

    Showers then
    Slight Chance
    Showers

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 36. West wind 6 to 11 mph becoming light after midnight.

    Low: 36 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 62. Calm wind becoming southwest 5 to 9 mph in the morning.

    High: 62 °F

    Sunny

  • Sunday Night

    Sunday Night: Clear, with a low around 43. South wind 6 to 8 mph.

    Low: 43 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 73.

    High: 73 °F

    Sunny

  • Monday Night

    Monday Night: A slight chance of rain and thunderstorms, then a chance of rain after midnight. Mostly clear, with a low around 57. Chance of precipitation is 30%.

    Low: 57 °F

    Slight Chance
    T-storms then
    Chance Rain

  • Tuesday

    Tuesday: A chance of rain, then rain likely and possibly a thunderstorm after noon. Mostly sunny, with a high near 75. Chance of precipitation is 70%.

    High: 75 °F

    Chance Rain
    then Rain
    Likely

  • Tuesday Night

    Tuesday Night: Rain and possibly a thunderstorm. Low around 51. Chance of precipitation is 90%.

    Low: 51 °F

    Rain

Detailed Forecast

Tonight
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 3am. Low around 61. South wind 10 to 16 mph, with gusts as high as 36 mph. Chance of precipitation is 100%.
Saturday
Showers and possibly a thunderstorm before 11am, then a slight chance of showers between 11am and 1pm. High near 68. Southwest wind 9 to 17 mph becoming northwest in the afternoon. Winds could gust as high as 30 mph. Chance of precipitation is 100%.
Saturday Night
Partly cloudy, with a low around 36. West wind 6 to 11 mph becoming light after midnight.
Sunday
Sunny, with a high near 62. Calm wind becoming southwest 5 to 9 mph in the morning.
Sunday Night
Clear, with a low around 43. South wind 6 to 8 mph.
Monday
Sunny, with a high near 73.
Monday Night
A slight chance of rain and thunderstorms, then a chance of rain after midnight. Mostly clear, with a low around 57. Chance of precipitation is 30%.
Tuesday
A chance of rain, then rain likely and possibly a thunderstorm after noon. Mostly sunny, with a high near 75. Chance of precipitation is 70%.
Tuesday Night
Rain and possibly a thunderstorm. Low around 51. Chance of precipitation is 90%.
Wednesday
Rain likely, mainly before noon. Cloudy, with a high near 58. Chance of precipitation is 70%.
Wednesday Night
A 20 percent chance of rain. Mostly cloudy, with a low around 34.
Thursday
Sunny, with a high near 53.
Thursday Night
Partly cloudy, with a low around 38.
Friday
Mostly sunny, with a high near 63.
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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:
8:51 pm CST Mar 6, 2026
Forecast Valid:
9pm CST Mar 6, 2026-6pm CDT Mar 13, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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