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

68°F

20°C

Humidity 72%
Wind Speed S 12 G 17 mph
Barometer 29.68 in
Dewpoint 58°F (14°C)
Visibility 10.00 mi
Last update 22 Mar 5:15 am CDT
Extended Forecast for

Vandalia IL

  • Today

    Today: Increasing clouds, with a high near 86. South wind 9 to 13 mph becoming northwest in the afternoon. Winds could gust as high as 21 mph.

    High: 86 °F

    Increasing
    Clouds

  • Tonight

    Tonight: A 40 percent chance of showers and thunderstorms, mainly before 9pm. Mostly cloudy, then gradually becoming mostly clear, with a low around 33. Breezy, with a north wind 13 to 23 mph, with gusts as high as 37 mph.

    Low: 33 °F

    Chance
    Showers and
    Breezy then
    Mostly Clear

  • Monday

    Monday: Mostly sunny, with a high near 53. North wind 8 to 11 mph.

    High: 53 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 36. Northeast wind around 6 mph.

    Low: 36 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 61. Southeast wind around 6 mph.

    High: 61 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 43.

    Low: 43 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 71.

    High: 71 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 57.

    Low: 57 °F

    Chance
    Showers

  • Thursday

    Thursday: A 30 percent chance of showers and thunderstorms after 1pm. Sunny, with a high near 82.

    High: 82 °F

    Sunny then
    Chance
    Showers

Detailed Forecast

Today
Increasing clouds, with a high near 86. South wind 9 to 13 mph becoming northwest in the afternoon. Winds could gust as high as 21 mph.
Tonight
A 40 percent chance of showers and thunderstorms, mainly before 9pm. Mostly cloudy, then gradually becoming mostly clear, with a low around 33. Breezy, with a north wind 13 to 23 mph, with gusts as high as 37 mph.
Monday
Mostly sunny, with a high near 53. North wind 8 to 11 mph.
Monday Night
Mostly cloudy, with a low around 36. Northeast wind around 6 mph.
Tuesday
Mostly sunny, with a high near 61. Southeast wind around 6 mph.
Tuesday Night
Mostly cloudy, with a low around 43.
Wednesday
Partly sunny, with a high near 71.
Wednesday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 57.
Thursday
A 30 percent chance of showers and thunderstorms after 1pm. Sunny, with a high near 82.
Thursday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 40. Chance of precipitation is 50%.
Friday
A 40 percent chance of showers. Partly sunny, with a high near 50.
Friday Night
A 20 percent chance of showers. Partly cloudy, with a low around 30.
Saturday
Mostly sunny, with a high near 55.
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:
4:16 am CDT Mar 22, 2026
Forecast Valid:
5am CDT Mar 22, 2026-6pm CDT Mar 28, 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