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

65°F

18°C

Humidity 73%
Wind Speed S 7 mph
Barometer 30.11 in
Dewpoint 56°F (13°C)
Visibility 10.00 mi
Last update 12 Apr 5:35 am CDT
Extended Forecast for

Vandalia IL

  • Today

    Today: Partly sunny, with a high near 79. Breezy, with a south wind 7 to 12 mph increasing to 16 to 21 mph in the afternoon. Winds could gust as high as 32 mph.

    High: 79 °F

    Mostly Sunny
    then Partly
    Sunny and
    Breezy

  • Tonight

    Tonight: A 50 percent chance of showers and thunderstorms, mainly between 10pm and 4am. Mostly cloudy, with a low around 63. Southwest wind 13 to 16 mph, with gusts as high as 25 mph.

    Low: 63 °F

    Chance
    Showers then
    Chance
    T-storms

  • Monday

    Monday: A slight chance of showers between 7am and 10am, then a slight chance of showers and thunderstorms after 10am. Mostly sunny, with a high near 81. Southwest wind 11 to 17 mph, with gusts as high as 25 mph. Chance of precipitation is 20%.

    High: 81 °F

    Slight Chance
    T-storms

  • Monday Night

    Monday Night: Partly cloudy, with a low around 66. Southwest wind 13 to 16 mph, with gusts as high as 25 mph.

    Low: 66 °F

    Partly Cloudy

  • Tuesday

    Tuesday: A slight chance of showers, then a chance of showers and thunderstorms after 10am. Partly sunny, with a high near 83. South wind 10 to 16 mph, with gusts as high as 23 mph. Chance of precipitation is 40%.

    High: 83 °F

    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 67.

    Low: 67 °F

    Chance
    T-storms

  • Wednesday

    Wednesday: Showers and possibly a thunderstorm. High near 78. Chance of precipitation is 80%.

    High: 78 °F

    Showers

  • Wednesday Night

    Wednesday Night: Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 63. Chance of precipitation is 70%.

    Low: 63 °F

    Showers
    Likely

  • Thursday

    Thursday: A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 80.

    High: 80 °F

    Chance
    Showers then
    Chance
    T-storms

Detailed Forecast

Today
Partly sunny, with a high near 79. Breezy, with a south wind 7 to 12 mph increasing to 16 to 21 mph in the afternoon. Winds could gust as high as 32 mph.
Tonight
A 50 percent chance of showers and thunderstorms, mainly between 10pm and 4am. Mostly cloudy, with a low around 63. Southwest wind 13 to 16 mph, with gusts as high as 25 mph.
Monday
A slight chance of showers between 7am and 10am, then a slight chance of showers and thunderstorms after 10am. Mostly sunny, with a high near 81. Southwest wind 11 to 17 mph, with gusts as high as 25 mph. Chance of precipitation is 20%.
Monday Night
Partly cloudy, with a low around 66. Southwest wind 13 to 16 mph, with gusts as high as 25 mph.
Tuesday
A slight chance of showers, then a chance of showers and thunderstorms after 10am. Partly sunny, with a high near 83. South wind 10 to 16 mph, with gusts as high as 23 mph. Chance of precipitation is 40%.
Tuesday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 67.
Wednesday
Showers and possibly a thunderstorm. High near 78. Chance of precipitation is 80%.
Wednesday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 63. Chance of precipitation is 70%.
Thursday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 80.
Thursday Night
A 20 percent chance of showers before 1am. Mostly clear, with a low around 59.
Friday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 84.
Friday Night
Showers and thunderstorms likely. Mostly cloudy, with a low around 62. Chance of precipitation is 60%.
Saturday
Showers likely and possibly a thunderstorm. Partly sunny, with a high near 76. Chance of precipitation is 60%.
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:
5:16 am CDT Apr 12, 2026
Forecast Valid:
5am CDT Apr 12, 2026-6pm CDT Apr 18, 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