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

72°F

22°C

Humidity 77%
Wind Speed S 18 mph
Barometer 29.78 in
Dewpoint 65°F (18°C)
Visibility 10.00 mi
Last update 10 Mar 9:15 pm CDT
Extended Forecast for

Vandalia IL

  • Tonight

    Tonight: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 4am. Mostly cloudy, with a low around 56. Southwest wind 14 to 17 mph, with gusts as high as 29 mph. Chance of precipitation is 60%.

    Low: 56 °F

    Mostly Cloudy
    then Showers
    Likely

  • Wednesday

    Wednesday: Showers and possibly a thunderstorm before 3pm, then a slight chance of showers between 3pm and 4pm. Temperature falling to around 48 by 5pm. Breezy, with a southwest wind 17 to 21 mph becoming northwest in the afternoon. Winds could gust as high as 29 mph. Chance of precipitation is 90%.

    High: 67 °F⇓

    Showers and
    Breezy

  • Wednesday Night

    Wednesday Night: Mostly cloudy, then gradually becoming mostly clear, with a low around 30. Blustery, with a northwest wind 15 to 20 mph decreasing to 8 to 13 mph after midnight. Winds could gust as high as 28 mph.

    Low: 30 °F

    Mostly Cloudy
    and Blustery
    then Partly
    Cloudy

  • Thursday

    Thursday: Sunny, with a high near 51. Light and variable wind becoming southwest 5 to 8 mph in the morning.

    High: 51 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 41. Breezy, with a south wind 8 to 13 mph increasing to 15 to 20 mph after midnight. Winds could gust as high as 30 mph.

    Low: 41 °F

    Mostly Cloudy
    then Mostly
    Cloudy and
    Breezy

  • Friday

    Friday: Partly sunny, with a high near 58.

    High: 58 °F

    Partly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 36.

    Low: 36 °F

    Mostly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 62.

    High: 62 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: A 20 percent chance of rain after 1am. Mostly cloudy, with a low around 48.

    Low: 48 °F

    Mostly Cloudy
    then Slight
    Chance Rain

Detailed Forecast

Tonight
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 4am. Mostly cloudy, with a low around 56. Southwest wind 14 to 17 mph, with gusts as high as 29 mph. Chance of precipitation is 60%.
Wednesday
Showers and possibly a thunderstorm before 3pm, then a slight chance of showers between 3pm and 4pm. Temperature falling to around 48 by 5pm. Breezy, with a southwest wind 17 to 21 mph becoming northwest in the afternoon. Winds could gust as high as 29 mph. Chance of precipitation is 90%.
Wednesday Night
Mostly cloudy, then gradually becoming mostly clear, with a low around 30. Blustery, with a northwest wind 15 to 20 mph decreasing to 8 to 13 mph after midnight. Winds could gust as high as 28 mph.
Thursday
Sunny, with a high near 51. Light and variable wind becoming southwest 5 to 8 mph in the morning.
Thursday Night
Mostly cloudy, with a low around 41. Breezy, with a south wind 8 to 13 mph increasing to 15 to 20 mph after midnight. Winds could gust as high as 30 mph.
Friday
Partly sunny, with a high near 58.
Friday Night
Mostly cloudy, with a low around 36.
Saturday
Partly sunny, with a high near 62.
Saturday Night
A 20 percent chance of rain after 1am. Mostly cloudy, with a low around 48.
Sunday
Rain likely and possibly a thunderstorm, then rain after 1pm. High near 62. Breezy. Chance of precipitation is 80%.
Sunday Night
A chance of rain and snow. Mostly cloudy, with a low around 20. Blustery. Chance of precipitation is 40%.
Monday
Mostly sunny, with a high near 33.
Monday Night
Partly cloudy, with a low around 16.
Tuesday
Partly sunny, with a high near 40.
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ABOUT THIS FORECAST

 
Point Forecast:
Vandalia IL
 38.96°N 89.11°W (Elev. 531 ft)
Last Update:
6:00 pm CDT Mar 10, 2026
Forecast Valid:
9pm CDT Mar 10, 2026-6pm CDT Mar 17, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation