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

71°F

22°C

Humidity 77%
Wind Speed S 17 G 23 mph
Barometer 29.82 in
Dewpoint 64°F (18°C)
Visibility 10.00 mi
Last update 2 Apr 7:15 pm CDT
Extended Forecast for

Vandalia IL

  • Tonight

    Tonight: Showers and thunderstorms likely, mainly before 1am. Mostly cloudy, with a low around 63. Breezy, with a southwest wind 15 to 20 mph decreasing to 7 to 12 mph after midnight. Winds could gust as high as 32 mph. Chance of precipitation is 60%.

    Low: 63 °F

    Chance
    T-storms and
    Breezy then
    Showers
    Likely

  • Friday

    Friday: A chance of showers and thunderstorms before 1pm, then showers likely and possibly a thunderstorm between 1pm and 2pm, then a chance of showers and thunderstorms after 2pm. Mostly cloudy, with a high near 76. South wind 6 to 14 mph, with gusts as high as 22 mph. Chance of precipitation is 60%.

    High: 76 °F

    Showers
    Likely

  • Friday Night

    Friday Night: A slight chance of showers and thunderstorms, then showers and possibly a thunderstorm after 7pm. Low around 60. South wind 10 to 14 mph, with gusts as high as 22 mph. Chance of precipitation is 90%.

    Low: 60 °F

    Showers
    Likely then
    T-storms

  • Saturday

    Saturday: Showers and possibly a thunderstorm before 1pm, then a chance of showers. Temperature falling to around 57 by 5pm. Southwest wind 11 to 15 mph becoming west in the afternoon. Winds could gust as high as 22 mph. Chance of precipitation is 80%.

    High: 65 °F⇓

    Showers

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 38. West wind 8 to 13 mph, with gusts as high as 20 mph.

    Low: 38 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 55.

    High: 55 °F

    Sunny

  • Sunday Night

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

    Low: 37 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 59.

    High: 59 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 34.

    Low: 34 °F

    Partly Cloudy

Detailed Forecast

Tonight
Showers and thunderstorms likely, mainly before 1am. Mostly cloudy, with a low around 63. Breezy, with a southwest wind 15 to 20 mph decreasing to 7 to 12 mph after midnight. Winds could gust as high as 32 mph. Chance of precipitation is 60%.
Friday
A chance of showers and thunderstorms before 1pm, then showers likely and possibly a thunderstorm between 1pm and 2pm, then a chance of showers and thunderstorms after 2pm. Mostly cloudy, with a high near 76. South wind 6 to 14 mph, with gusts as high as 22 mph. Chance of precipitation is 60%.
Friday Night
A slight chance of showers and thunderstorms, then showers and possibly a thunderstorm after 7pm. Low around 60. South wind 10 to 14 mph, with gusts as high as 22 mph. Chance of precipitation is 90%.
Saturday
Showers and possibly a thunderstorm before 1pm, then a chance of showers. Temperature falling to around 57 by 5pm. Southwest wind 11 to 15 mph becoming west in the afternoon. Winds could gust as high as 22 mph. Chance of precipitation is 80%.
Saturday Night
Partly cloudy, with a low around 38. West wind 8 to 13 mph, with gusts as high as 20 mph.
Sunday
Sunny, with a high near 55.
Sunday Night
Mostly clear, with a low around 37.
Monday
Sunny, with a high near 59.
Monday Night
Partly cloudy, with a low around 34.
Tuesday
Sunny, with a high near 53.
Tuesday Night
Mostly clear, with a low around 36.
Wednesday
Mostly sunny, with a high near 65.
Wednesday Night
Partly cloudy, with a low around 49.
Thursday
A 20 percent chance of showers. Mostly sunny, with a high near 71.
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:
6:56 pm CDT Apr 2, 2026
Forecast Valid:
7pm CDT Apr 2, 2026-6pm CDT Apr 9, 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