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.

Mostly Cloudy

78°F

26°C

Humidity 67%
Wind Speed S 15 G 21 mph
Barometer 30.04 in
Dewpoint 65°F (18°C)
Visibility 10.00 mi
Heat Index80°F (27°C)
Last update 3 Apr 12:55 pm CDT
Extended Forecast for

Vandalia IL

  • This Afternoon

    This Afternoon: A 30 percent chance of showers and thunderstorms, mainly before 4pm. Partly sunny, with a high near 76. South wind 14 to 16 mph, with gusts as high as 23 mph.

    High: 76 °F

    Chance
    T-storms

  • Tonight

    Tonight: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 4am. Increasing clouds, with a low around 59. South wind 9 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 60%.

    Low: 59 °F

    Slight Chance
    T-storms then
    Showers
    Likely

  • Saturday

    Saturday: Showers and possibly a thunderstorm before 2pm, then a slight chance of showers between 2pm and 3pm. Temperature falling to around 56 by 5pm. Southwest wind 10 to 15 mph becoming west in the afternoon. Winds could gust as high as 23 mph. Chance of precipitation is 90%.

    High: 64 °F⇓

    Showers then
    Chance
    Showers

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 37. West wind 8 to 14 mph, with gusts as high as 24 mph.

    Low: 37 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 55. Northwest wind 7 to 13 mph, with gusts as high as 20 mph.

    High: 55 °F

    Sunny

  • Sunday Night

    Sunday Night: Clear, with a low around 37.

    Low: 37 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 57.

    High: 57 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 32.

    Low: 32 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 52.

    High: 52 °F

    Sunny

Detailed Forecast

This Afternoon
A 30 percent chance of showers and thunderstorms, mainly before 4pm. Partly sunny, with a high near 76. South wind 14 to 16 mph, with gusts as high as 23 mph.
Tonight
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 4am. Increasing clouds, with a low around 59. South wind 9 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 60%.
Saturday
Showers and possibly a thunderstorm before 2pm, then a slight chance of showers between 2pm and 3pm. Temperature falling to around 56 by 5pm. Southwest wind 10 to 15 mph becoming west in the afternoon. Winds could gust as high as 23 mph. Chance of precipitation is 90%.
Saturday Night
Partly cloudy, with a low around 37. West wind 8 to 14 mph, with gusts as high as 24 mph.
Sunday
Sunny, with a high near 55. Northwest wind 7 to 13 mph, with gusts as high as 20 mph.
Sunday Night
Clear, with a low around 37.
Monday
Sunny, with a high near 57.
Monday Night
Partly cloudy, with a low around 32.
Tuesday
Sunny, with a high near 52.
Tuesday Night
Partly cloudy, with a low around 37.
Wednesday
Partly sunny, with a high near 66.
Wednesday Night
Partly cloudy, with a low around 50.
Thursday
A 20 percent chance of showers. Mostly sunny, with a high near 72.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Vandalia IL
 38.96°N 89.11°W (Elev. 531 ft)
Last Update:
11:51 am CDT Apr 3, 2026
Forecast Valid:
1pm CDT Apr 3, 2026-6pm CDT Apr 9, 2026
 
Forecast Discussion
 
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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