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

78°F

26°C

Humidity 49%
Wind Speed S 10 G 16 mph
Barometer 29.98 in
Dewpoint 57°F (14°C)
Visibility 10.00 mi
Heat Index79°F (26°C)
Last update 22 Apr 4:55 pm CDT
Extended Forecast for

Vandalia IL

  • Tonight

    Tonight: Mostly clear, with a low around 57. South wind 3 to 7 mph.

    Low: 57 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 79. South wind 6 to 16 mph, with gusts as high as 23 mph.

    High: 79 °F

    Sunny

  • Thursday Night

    Thursday Night: A 50 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 61. South wind 10 to 13 mph, with gusts as high as 21 mph.

    Low: 61 °F

    Mostly Clear
    then Chance
    T-storms

  • Friday

    Friday: Showers and possibly a thunderstorm. High near 73. South wind 10 to 13 mph, with gusts as high as 20 mph. Chance of precipitation is 90%.

    High: 73 °F

    Showers

  • Friday Night

    Friday Night: A chance of showers and thunderstorms before 10pm, then a chance of showers between 10pm and 1am. Partly cloudy, with a low around 53. West wind around 6 mph becoming north after midnight. Chance of precipitation is 40%.

    Low: 53 °F

    Chance
    Showers

  • Saturday

    Saturday: Sunny, with a high near 74.

    High: 74 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 51.

    Low: 51 °F

    Partly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 73.

    High: 73 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 60.

    Low: 60 °F

    Chance
    Showers

Detailed Forecast

Tonight
Mostly clear, with a low around 57. South wind 3 to 7 mph.
Thursday
Sunny, with a high near 79. South wind 6 to 16 mph, with gusts as high as 23 mph.
Thursday Night
A 50 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 61. South wind 10 to 13 mph, with gusts as high as 21 mph.
Friday
Showers and possibly a thunderstorm. High near 73. South wind 10 to 13 mph, with gusts as high as 20 mph. Chance of precipitation is 90%.
Friday Night
A chance of showers and thunderstorms before 10pm, then a chance of showers between 10pm and 1am. Partly cloudy, with a low around 53. West wind around 6 mph becoming north after midnight. Chance of precipitation is 40%.
Saturday
Sunny, with a high near 74.
Saturday Night
Partly cloudy, with a low around 51.
Sunday
Partly sunny, with a high near 73.
Sunday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 60.
Monday
Showers and possibly a thunderstorm. High near 76. Breezy. Chance of precipitation is 80%.
Monday Night
A 50 percent chance of showers. Partly cloudy, with a low around 52.
Tuesday
Mostly sunny, with a high near 68.
Tuesday Night
Partly cloudy, with a low around 49.
Wednesday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 67.
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:
3:56 pm CDT Apr 22, 2026
Forecast Valid:
5pm CDT Apr 22, 2026-6pm CDT Apr 29, 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