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

44°F

7°C

Humidity 90%
Wind Speed Calm
Barometer 30.03 in
Dewpoint 41°F (5°C)
Visibility 10.00 mi
Last update 15 Feb 8:15 pm CST
Extended Forecast for

4 Miles N Vandalia IL

  • Tonight

    Tonight: Patchy dense fog after 11pm. Otherwise, partly cloudy, with a low around 36. Calm wind.

    Low: 36 °F

    Patchy Dense
    Fog

  • Washington's Birthday

    Washington's Birthday: Widespread dense fog, mainly before 7am. Otherwise, partly sunny, with a high near 60. Light southwest wind becoming south 5 to 10 mph in the morning.

    High: 60 °F

    Dense Fog
    then Partly
    Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 41. South wind around 6 mph.

    Low: 41 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Cloudy, with a high near 60. South wind 6 to 16 mph, with gusts as high as 24 mph.

    High: 60 °F

    Cloudy

  • Tuesday Night

    Tuesday Night: A 20 percent chance of showers after midnight. Mostly cloudy, with a low around 54. Breezy, with a south wind 14 to 20 mph, with gusts as high as 30 mph.

    Low: 54 °F

    Cloudy then
    Slight Chance
    Showers and
    Breezy

  • Wednesday

    Wednesday: Sunny, with a high near 70.

    High: 70 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 44.

    Low: 44 °F

    Partly Cloudy

  • Thursday

    Thursday: A slight chance of showers, then a chance of showers and thunderstorms after noon. Mostly sunny, with a high near 69. Chance of precipitation is 30%.

    High: 69 °F

    Chance
    Showers

  • Thursday Night

    Thursday Night: A 30 percent chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 37.

    Low: 37 °F

    Chance
    Showers then
    Partly Cloudy

Detailed Forecast

Tonight
Patchy dense fog after 11pm. Otherwise, partly cloudy, with a low around 36. Calm wind.
Washington's Birthday
Widespread dense fog, mainly before 7am. Otherwise, partly sunny, with a high near 60. Light southwest wind becoming south 5 to 10 mph in the morning.
Monday Night
Mostly cloudy, with a low around 41. South wind around 6 mph.
Tuesday
Cloudy, with a high near 60. South wind 6 to 16 mph, with gusts as high as 24 mph.
Tuesday Night
A 20 percent chance of showers after midnight. Mostly cloudy, with a low around 54. Breezy, with a south wind 14 to 20 mph, with gusts as high as 30 mph.
Wednesday
Sunny, with a high near 70.
Wednesday Night
Partly cloudy, with a low around 44.
Thursday
A slight chance of showers, then a chance of showers and thunderstorms after noon. Mostly sunny, with a high near 69. Chance of precipitation is 30%.
Thursday Night
A 30 percent chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 37.
Friday
A 20 percent chance of rain after noon. Mostly sunny, with a high near 51.
Friday Night
A 30 percent chance of rain. Mostly cloudy, with a low around 29.
Saturday
A 20 percent chance of rain. Partly sunny, with a high near 46.
Saturday Night
A slight chance of rain and snow. Partly cloudy, with a low around 25. Chance of precipitation is 20%.
Sunday
Mostly sunny, with a high near 43.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles N Vandalia IL
 39.03°N 89.1°W (Elev. 538 ft)
Last Update:
7:41 pm CST Feb 15, 2026
Forecast Valid:
8pm CST Feb 15, 2026-6pm CST Feb 22, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation