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

59°F

15°C

Humidity 90%
Wind Speed E 6 mph
Barometer 29.92 in
Dewpoint 56°F (13°C)
Visibility 10.00 mi
Last update 2 Apr 12:35 am CDT
Extended Forecast for

Vandalia IL

  • Overnight

    Overnight: A chance of showers and thunderstorms before 4am, then a slight chance of showers. Mostly cloudy, with a temperature rising to around 61 by 5am. Southeast wind 8 to 11 mph, with gusts as high as 20 mph. Chance of precipitation is 40%.

    Low: 55 °F⇑

    Chance
    T-storms

  • Thursday

    Thursday: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 3pm. High near 75. Breezy, with a south wind 17 to 22 mph increasing to 23 to 28 mph in the afternoon. Winds could gust as high as 36 mph. Chance of precipitation is 80%.

    High: 75 °F

    Breezy.
    Mostly Cloudy
    then Showers

  • Thursday Night

    Thursday Night: Showers and thunderstorms likely before 4am, then a chance of showers. Partly cloudy, with a low around 62. Breezy, with a south wind 17 to 22 mph decreasing to 10 to 15 mph after midnight. Winds could gust as high as 31 mph. Chance of precipitation is 70%.

    Low: 62 °F

    Chance
    T-storms and
    Breezy then
    Showers
    Likely

  • Friday

    Friday: A chance of showers, with thunderstorms also possible after 10am. Partly sunny, with a high near 78. South wind 8 to 16 mph, with gusts as high as 23 mph. Chance of precipitation is 50%.

    High: 78 °F

    Chance
    Showers then
    Chance
    T-storms

  • Friday Night

    Friday Night: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 1am. Low around 56. South wind 11 to 13 mph, with gusts as high as 22 mph. Chance of precipitation is 80%.

    Low: 56 °F

    Chance
    T-storms then
    Showers

  • Saturday

    Saturday: Showers and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms after 1pm. Steady temperature around 59. Chance of precipitation is 80%.

    High: 59 °F

    Showers

  • Saturday Night

    Saturday Night: A 20 percent chance of showers before 1am. Mostly cloudy, with a low around 38.

    Low: 38 °F

    Slight Chance
    Showers

  • Sunday

    Sunday: Sunny, with a high near 55.

    High: 55 °F

    Sunny

  • Sunday Night

    Sunday Night: Clear, with a low around 36.

    Low: 36 °F

    Clear

Detailed Forecast

Overnight
A chance of showers and thunderstorms before 4am, then a slight chance of showers. Mostly cloudy, with a temperature rising to around 61 by 5am. Southeast wind 8 to 11 mph, with gusts as high as 20 mph. Chance of precipitation is 40%.
Thursday
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 3pm. High near 75. Breezy, with a south wind 17 to 22 mph increasing to 23 to 28 mph in the afternoon. Winds could gust as high as 36 mph. Chance of precipitation is 80%.
Thursday Night
Showers and thunderstorms likely before 4am, then a chance of showers. Partly cloudy, with a low around 62. Breezy, with a south wind 17 to 22 mph decreasing to 10 to 15 mph after midnight. Winds could gust as high as 31 mph. Chance of precipitation is 70%.
Friday
A chance of showers, with thunderstorms also possible after 10am. Partly sunny, with a high near 78. South wind 8 to 16 mph, with gusts as high as 23 mph. Chance of precipitation is 50%.
Friday Night
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 1am. Low around 56. South wind 11 to 13 mph, with gusts as high as 22 mph. Chance of precipitation is 80%.
Saturday
Showers and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms after 1pm. Steady temperature around 59. Chance of precipitation is 80%.
Saturday Night
A 20 percent chance of showers before 1am. Mostly cloudy, with a low around 38.
Sunday
Sunny, with a high near 55.
Sunday Night
Clear, with a low around 36.
Monday
Sunny, with a high near 61.
Monday Night
Partly cloudy, with a low around 38.
Tuesday
Mostly sunny, with a high near 55.
Tuesday Night
Partly cloudy, with a low around 35.
Wednesday
Mostly sunny, with a high near 64.
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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:
10:31 pm CDT Apr 1, 2026
Forecast Valid:
12am CDT Apr 2, 2026-6pm CDT Apr 8, 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