National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Salem, Salem-Leckrone Airport (KSLO)

Lat: 38.64°NLon: 88.96°WElev: 574ft.

Overcast

42°F

6°C

Humidity 88%
Wind Speed SW 5 mph
Barometer 30.06 in
Dewpoint 38°F (3°C)
Visibility 10.00 mi
Wind Chill39°F (4°C)
Last update 8 Mar 5:15 am CDT
Extended Forecast for

Vandalia IL

  • Today

    Today: Sunny, with a high near 62. Light west wind becoming southwest 5 to 10 mph in the morning.

    High: 62 °F

    Sunny

  • Tonight

    Tonight: Clear, with a low around 42. Southwest wind 6 to 8 mph.

    Low: 42 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 72. South wind 7 to 16 mph, with gusts as high as 23 mph.

    High: 72 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 58. South wind 10 to 13 mph, with gusts as high as 23 mph.

    Low: 58 °F

    Mostly Clear

  • Tuesday

    Tuesday: Rain likely and possibly a thunderstorm, mainly after 4pm. Mostly cloudy, with a high near 77. South wind 9 to 16 mph, with gusts as high as 24 mph. Chance of precipitation is 60%.

    High: 77 °F

    Partly Sunny
    then Rain
    Likely

  • Tuesday Night

    Tuesday Night: Rain and possibly a thunderstorm. Low around 55. Chance of precipitation is 90%.

    Low: 55 °F

    Rain

  • Wednesday

    Wednesday: Rain and possibly a thunderstorm before 1pm, then rain likely. High near 66. Breezy. Chance of precipitation is 100%.

    High: 66 °F

    Rain and
    Breezy

  • Wednesday Night

    Wednesday Night: A slight chance of rain and snow before 1am. Partly cloudy, with a low around 30. Chance of precipitation is 20%.

    Low: 30 °F

    Slight Chance
    Rain/Snow

  • Thursday

    Thursday: Sunny, with a high near 49.

    High: 49 °F

    Sunny

Detailed Forecast

Today
Sunny, with a high near 62. Light west wind becoming southwest 5 to 10 mph in the morning.
Tonight
Clear, with a low around 42. Southwest wind 6 to 8 mph.
Monday
Sunny, with a high near 72. South wind 7 to 16 mph, with gusts as high as 23 mph.
Monday Night
Mostly clear, with a low around 58. South wind 10 to 13 mph, with gusts as high as 23 mph.
Tuesday
Rain likely and possibly a thunderstorm, mainly after 4pm. Mostly cloudy, with a high near 77. South wind 9 to 16 mph, with gusts as high as 24 mph. Chance of precipitation is 60%.
Tuesday Night
Rain and possibly a thunderstorm. Low around 55. Chance of precipitation is 90%.
Wednesday
Rain and possibly a thunderstorm before 1pm, then rain likely. High near 66. Breezy. Chance of precipitation is 100%.
Wednesday Night
A slight chance of rain and snow before 1am. Partly cloudy, with a low around 30. Chance of precipitation is 20%.
Thursday
Sunny, with a high near 49.
Thursday Night
Mostly cloudy, with a low around 40.
Friday
Partly sunny, with a high near 63. Breezy.
Friday Night
Mostly cloudy, with a low around 36.
Saturday
Mostly cloudy, with a high near 53.
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ABOUT THIS FORECAST

 
Point Forecast:
Vandalia IL
 38.96°N 89.11°W (Elev. 531 ft)
Last Update:
3:21 am CDT Mar 8, 2026
Forecast Valid:
5am CDT Mar 8, 2026-6pm CDT Mar 14, 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