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

63°F

17°C

Humidity 45%
Wind Speed S 8 mph
Barometer 30.17 in
Dewpoint 42°F (6°C)
Visibility 10.00 mi
Last update 9 Apr 1:35 am CDT
Extended Forecast for

Vandalia IL

  • Overnight

    Overnight: Mostly clear, with a low around 53. South wind around 9 mph, with gusts as high as 20 mph.

    Low: 53 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 76. Southwest wind 10 to 16 mph, with gusts as high as 26 mph.

    High: 76 °F

    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 56. South wind 8 to 10 mph.

    Low: 56 °F

    Partly Cloudy

  • Friday

    Friday: A chance of showers, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 69. Southwest wind 8 to 10 mph becoming northwest in the afternoon. Winds could gust as high as 21 mph. Chance of precipitation is 60%.

    High: 69 °F

    Showers
    Likely

  • Friday Night

    Friday Night: A 30 percent chance of showers, mainly before 1am. Mostly cloudy, with a low around 48. Northeast wind around 6 mph.

    Low: 48 °F

    Chance
    Showers

  • Saturday

    Saturday: A 20 percent chance of showers. Mostly cloudy, with a high near 71.

    High: 71 °F

    Slight Chance
    Showers

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 59.

    Low: 59 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly cloudy, with a high near 78. Breezy.

    High: 78 °F

    Partly Sunny
    then Mostly
    Cloudy and
    Breezy

  • Sunday Night

    Sunday Night: A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 63.

    Low: 63 °F

    Chance
    Showers

Detailed Forecast

Overnight
Mostly clear, with a low around 53. South wind around 9 mph, with gusts as high as 20 mph.
Thursday
Sunny, with a high near 76. Southwest wind 10 to 16 mph, with gusts as high as 26 mph.
Thursday Night
Partly cloudy, with a low around 56. South wind 8 to 10 mph.
Friday
A chance of showers, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 69. Southwest wind 8 to 10 mph becoming northwest in the afternoon. Winds could gust as high as 21 mph. Chance of precipitation is 60%.
Friday Night
A 30 percent chance of showers, mainly before 1am. Mostly cloudy, with a low around 48. Northeast wind around 6 mph.
Saturday
A 20 percent chance of showers. Mostly cloudy, with a high near 71.
Saturday Night
Partly cloudy, with a low around 59.
Sunday
Mostly cloudy, with a high near 78. Breezy.
Sunday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 63.
Monday
A 40 percent chance of showers and thunderstorms, mainly before 1pm. Mostly cloudy, with a high near 79. Breezy.
Monday Night
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 67.
Tuesday
Showers and thunderstorms likely. Mostly cloudy, with a high near 80. Chance of precipitation is 60%.
Tuesday Night
Showers and thunderstorms likely. Mostly cloudy, with a low around 61. Chance of precipitation is 60%.
Wednesday
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 74.
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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:
1:26 am CDT Apr 9, 2026
Forecast Valid:
1am CDT Apr 9, 2026-6pm CDT Apr 15, 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