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

84°F

29°C

Humidity 68%
Wind Speed SE 9 mph
Barometer 30.09 in
Dewpoint 72°F (22°C)
Visibility 10.00 mi
Heat Index90°F (32°C)
Last update 18 Aug 9:15 am CDT
Extended Forecast for

3 Miles ESE Vandalia IL

Heat Advisory August 18, 09:34am until August 18, 08:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory August 18, 09:34am until August 18, 08:00pm

    NOW until 8:00pm Mon

    Heat Advisory

  • Today

    High: 91 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 73. Light southeast wind.

    Low: 73 °F

    Mostly Clear

  • Tuesday

    Tuesday: A 40 percent chance of showers and thunderstorms, mainly after 7am. Mostly sunny, with a high near 91. Heat index values as high as 100. Light and variable wind.

    High: 91 °F

    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A chance of showers and thunderstorms before 4am, then a slight chance of showers. Partly cloudy, with a low around 72. Calm wind. Chance of precipitation is 30%.

    Low: 72 °F

    Chance
    T-storms

  • Wednesday

    Wednesday: A slight chance of showers, with thunderstorms also possible after 7am. Mostly sunny, with a high near 86. North wind 3 to 7 mph. Chance of precipitation is 20%.

    High: 86 °F

    Slight Chance
    T-storms

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 64.

    Low: 64 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 85.

    High: 85 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 63.

    Low: 63 °F

    Mostly Clear

Detailed Forecast

Today
Sunny, with a high near 91. Heat index values as high as 102. South wind 3 to 6 mph.
Tonight
Mostly clear, with a low around 73. Light southeast wind.
Tuesday
A 40 percent chance of showers and thunderstorms, mainly after 7am. Mostly sunny, with a high near 91. Heat index values as high as 100. Light and variable wind.
Tuesday Night
A chance of showers and thunderstorms before 4am, then a slight chance of showers. Partly cloudy, with a low around 72. Calm wind. Chance of precipitation is 30%.
Wednesday
A slight chance of showers, with thunderstorms also possible after 7am. Mostly sunny, with a high near 86. North wind 3 to 7 mph. Chance of precipitation is 20%.
Wednesday Night
Mostly clear, with a low around 64.
Thursday
Sunny, with a high near 85.
Thursday Night
Mostly clear, with a low around 63.
Friday
Sunny, with a high near 86.
Friday Night
Clear, with a low around 64.
Saturday
Sunny, with a high near 86.
Saturday Night
Mostly clear, with a low around 60.
Sunday
Sunny, with a high near 80.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles ESE Vandalia IL
 38.96°N 89.05°W (Elev. 502 ft)
Last Update:
8:46 am CDT Aug 18, 2025
Forecast Valid:
9am CDT Aug 18, 2025-6pm CDT Aug 24, 2025
 
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