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

81°F

27°C

Humidity 47%
Wind Speed S 17 G 28 mph
Barometer 29.73 in
Dewpoint 59°F (15°C)
Visibility 10.00 mi
Heat Index81°F (27°C)
Last update 26 Mar 7:55 pm CDT
Extended Forecast for

Vandalia IL

  • Tonight

    Tonight: Showers and thunderstorms before 4am, then showers likely. Low around 38. Breezy, with a south wind 15 to 22 mph becoming north in the evening. Winds could gust as high as 37 mph. Chance of precipitation is 90%.

    Low: 38 °F

    Breezy.
    Showers
    Likely then
    Showers

  • Friday

    Friday: A 30 percent chance of showers before 8am. Cloudy through mid morning, then gradual clearing, with a high near 50. North wind 16 to 18 mph, with gusts as high as 29 mph.

    High: 50 °F

    Chance
    Showers then
    Mostly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 29. North wind 6 to 11 mph, with gusts as high as 20 mph.

    Low: 29 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 53. Light and variable wind becoming southeast around 6 mph in the morning.

    High: 53 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 39. South wind around 6 mph.

    Low: 39 °F

    Mostly Cloudy

  • Sunday

    Sunday: Mostly cloudy, with a high near 63.

    High: 63 °F

    Mostly Cloudy

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 54.

    Low: 54 °F

    Mostly Cloudy

  • Monday

    Monday: A 20 percent chance of rain and thunderstorms before 1pm. Mostly sunny, with a high near 78.

    High: 78 °F

    Slight Chance
    T-storms

  • Monday Night

    Monday Night: A 20 percent chance of rain. Mostly cloudy, with a low around 61.

    Low: 61 °F

    Slight Chance
    Rain

Detailed Forecast

Tonight
Showers and thunderstorms before 4am, then showers likely. Low around 38. Breezy, with a south wind 15 to 22 mph becoming north in the evening. Winds could gust as high as 37 mph. Chance of precipitation is 90%.
Friday
A 30 percent chance of showers before 8am. Cloudy through mid morning, then gradual clearing, with a high near 50. North wind 16 to 18 mph, with gusts as high as 29 mph.
Friday Night
Mostly clear, with a low around 29. North wind 6 to 11 mph, with gusts as high as 20 mph.
Saturday
Sunny, with a high near 53. Light and variable wind becoming southeast around 6 mph in the morning.
Saturday Night
Mostly cloudy, with a low around 39. South wind around 6 mph.
Sunday
Mostly cloudy, with a high near 63.
Sunday Night
Mostly cloudy, with a low around 54.
Monday
A 20 percent chance of rain and thunderstorms before 1pm. Mostly sunny, with a high near 78.
Monday Night
A 20 percent chance of rain. Mostly cloudy, with a low around 61.
Tuesday
A 20 percent chance of rain and thunderstorms. Partly sunny, with a high near 81.
Tuesday Night
A 40 percent chance of rain and thunderstorms. Mostly cloudy, with a low around 57.
Wednesday
A 40 percent chance of rain and thunderstorms. Mostly cloudy, with a high near 73.
Wednesday Night
A 50 percent chance of rain and thunderstorms. Mostly cloudy, with a low around 55.
Thursday
Rain likely and possibly a thunderstorm. Mostly cloudy, with a high near 69. Chance of precipitation is 60%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Vandalia IL
 38.96°N 89.11°W (Elev. 531 ft)
Last Update:
7:51 pm CDT Mar 26, 2026
Forecast Valid:
8pm CDT Mar 26, 2026-6pm CDT Apr 2, 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