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.

Fair

62°F

17°C

Humidity 23%
Wind Speed E 6 mph
Barometer 30.21 in
Dewpoint 23°F (-5°C)
Visibility 10.00 mi
Last update 24 Mar 4:35 pm CDT
Extended Forecast for

Vandalia IL

  • Tonight

    Tonight: Mostly cloudy, with a low around 41. Southeast wind 3 to 6 mph.

    Low: 41 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 72. Light southeast wind becoming south 6 to 11 mph in the morning.

    High: 72 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: A slight chance of rain and thunderstorms. Partly cloudy, with a low around 59. South wind 9 to 11 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.

    Low: 59 °F

    Slight Chance
    T-storms

  • Thursday

    Thursday: A 20 percent chance of rain after 1pm. Sunny, with a high near 85. Southwest wind 10 to 15 mph, with gusts as high as 23 mph.

    High: 85 °F

    Sunny then
    Slight Chance
    Rain

  • Thursday Night

    Thursday Night: Rain. Low around 41. Southwest wind 10 to 17 mph becoming north after midnight. Winds could gust as high as 25 mph. Chance of precipitation is 90%.

    Low: 41 °F

    Rain

  • Friday

    Friday: A 30 percent chance of rain before 1pm. Partly sunny, with a high near 48.

    High: 48 °F

    Chance Rain

  • Friday Night

    Friday Night: Mostly clear, with a low around 29.

    Low: 29 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 56.

    High: 56 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 37.

    Low: 37 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly cloudy, with a low around 41. Southeast wind 3 to 6 mph.
Wednesday
Mostly sunny, with a high near 72. Light southeast wind becoming south 6 to 11 mph in the morning.
Wednesday Night
A slight chance of rain and thunderstorms. Partly cloudy, with a low around 59. South wind 9 to 11 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.
Thursday
A 20 percent chance of rain after 1pm. Sunny, with a high near 85. Southwest wind 10 to 15 mph, with gusts as high as 23 mph.
Thursday Night
Rain. Low around 41. Southwest wind 10 to 17 mph becoming north after midnight. Winds could gust as high as 25 mph. Chance of precipitation is 90%.
Friday
A 30 percent chance of rain before 1pm. Partly sunny, with a high near 48.
Friday Night
Mostly clear, with a low around 29.
Saturday
Sunny, with a high near 56.
Saturday Night
Mostly clear, with a low around 37.
Sunday
Mostly sunny, with a high near 61.
Sunday Night
Mostly cloudy, with a low around 47.
Monday
Mostly sunny, with a high near 75.
Monday Night
A 30 percent chance of rain. Mostly cloudy, with a low around 56.
Tuesday
A 40 percent chance of rain and thunderstorms. Partly sunny, with a high near 74.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Vandalia IL
 38.96°N 89.11°W (Elev. 531 ft)
Last Update:
2:56 pm CDT Mar 24, 2026
Forecast Valid:
4pm CDT Mar 24, 2026-6pm CDT Mar 31, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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