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

82°F

28°C

Humidity 78%
Wind Speed NA
Barometer 29.86 in
Dewpoint 75°F (24°C)
Visibility 10.00 mi
Heat Index88°F (31°C)
Last update 26 Jul 7:55 pm CDT
Extended Forecast for

3 Miles NW Vandalia IL

Extreme Heat Warning July 26, 08:14pm until July 27, 09:00pm
Click here for hazard details and duration
Extreme Heat Warning
  •  
    Extreme Heat Warning July 26, 08:14pm until July 27, 09:00pm

    NOW until 9:00pm Mon

    Extreme Heat Warning

  • Tonight

    Low: 75 °F

    Mostly Cloudy
    then Patchy
    Fog

  • Monday

    Monday: Patchy fog before 8am. Otherwise, mostly sunny, with a high near 94. Heat index values as high as 111. Calm wind becoming southwest 5 to 9 mph in the morning.

    High: 94 °F

    Patchy Fog
    then Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 76. South wind around 6 mph becoming west after midnight.

    Low: 76 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 89. North wind 6 to 10 mph.

    High: 89 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 66. North wind 3 to 8 mph.

    Low: 66 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 85.

    High: 85 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Clear, with a low around 65.

    Low: 65 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 86.

    High: 86 °F

    Sunny

Detailed Forecast

Tonight
Patchy fog after 5am. Otherwise, mostly cloudy, with a low around 75. Light and variable wind.
Monday
Patchy fog before 8am. Otherwise, mostly sunny, with a high near 94. Heat index values as high as 111. Calm wind becoming southwest 5 to 9 mph in the morning.
Monday Night
Mostly clear, with a low around 76. South wind around 6 mph becoming west after midnight.
Tuesday
Sunny, with a high near 89. North wind 6 to 10 mph.
Tuesday Night
Mostly clear, with a low around 66. North wind 3 to 8 mph.
Wednesday
Sunny, with a high near 85.
Wednesday Night
Clear, with a low around 65.
Thursday
Sunny, with a high near 86.
Thursday Night
A 20 percent chance of showers after 1am. Partly cloudy, with a low around 67.
Friday
A chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 83. Chance of precipitation is 40%.
Friday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 67.
Saturday
A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 82.
Saturday Night
Mostly clear, with a low around 66.
Sunday
Sunny, with a high near 85.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles NW Vandalia IL
 39.01°N 89.13°W (Elev. 561 ft)
Last Update:
6:56 pm CDT Jul 26, 2026
Forecast Valid:
8pm CDT Jul 26, 2026-6pm CDT Aug 2, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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