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.

Fog/Mist

49°F

9°C

Humidity 95%
Wind Speed SE 3 mph
Barometer 30.00 in
Dewpoint 47°F (8°C)
Visibility 1.50 mi
Last update 27 Dec 8:15 am CST
Extended Forecast for

Vandalia IL

  • Today

    Today: Areas of fog before 11am. Otherwise, mostly cloudy, with a high near 60. Southeast wind 6 to 8 mph.

    High: 60 °F

    Areas Fog
    then Mostly
    Cloudy

  • Tonight

    Tonight: A 30 percent chance of showers, mainly between 8pm and 4am. Cloudy, with a low around 57. South wind 7 to 9 mph.

    Low: 57 °F

    Chance
    Showers

  • Sunday

    Sunday: Showers and thunderstorms likely, then showers and possibly a thunderstorm after 4pm. High near 69. South wind 9 to 18 mph, with gusts as high as 25 mph. Chance of precipitation is 80%.

    High: 69 °F

    Chance
    Showers then
    Showers

  • Sunday Night

    Sunday Night: Rain showers likely, possibly mixing with snow after 9pm, then gradually ending. Cloudy, then gradually becoming partly cloudy, with a low around 18. Breezy, with a west wind 16 to 23 mph, with gusts as high as 34 mph. Chance of precipitation is 60%. Little or no snow accumulation expected.

    Low: 18 °F

    Breezy.
    Rain/Snow
    Likely then
    Mostly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 25. Breezy, with a west wind 16 to 23 mph, with gusts as high as 33 mph.

    High: 25 °F

    Partly Sunny
    and Breezy

  • Monday Night

    Monday Night: Partly cloudy, with a low around 15.

    Low: 15 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 30.

    High: 30 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 23.

    Low: 23 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 40.

    High: 40 °F

    Mostly Sunny

Detailed Forecast

Today
Areas of fog before 11am. Otherwise, mostly cloudy, with a high near 60. Southeast wind 6 to 8 mph.
Tonight
A 30 percent chance of showers, mainly between 8pm and 4am. Cloudy, with a low around 57. South wind 7 to 9 mph.
Sunday
Showers and thunderstorms likely, then showers and possibly a thunderstorm after 4pm. High near 69. South wind 9 to 18 mph, with gusts as high as 25 mph. Chance of precipitation is 80%.
Sunday Night
Rain showers likely, possibly mixing with snow after 9pm, then gradually ending. Cloudy, then gradually becoming partly cloudy, with a low around 18. Breezy, with a west wind 16 to 23 mph, with gusts as high as 34 mph. Chance of precipitation is 60%. Little or no snow accumulation expected.
Monday
Partly sunny, with a high near 25. Breezy, with a west wind 16 to 23 mph, with gusts as high as 33 mph.
Monday Night
Partly cloudy, with a low around 15.
Tuesday
Mostly sunny, with a high near 30.
Tuesday Night
Partly cloudy, with a low around 23.
Wednesday
Mostly sunny, with a high near 40.
Wednesday Night
Mostly cloudy, with a low around 21.
New Year's Day
Mostly sunny, with a high near 30.
Thursday Night
Mostly clear, with a low around 12.
Friday
Mostly sunny, with a high near 29.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Vandalia IL
 38.96°N 89.11°W (Elev. 531 ft)
Last Update:
8:01 am CST Dec 27, 2025
Forecast Valid:
8am CST Dec 27, 2025-6pm CST Jan 2, 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