National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Salem, Salem-Leckrone Airport (KSLO)

Lat: 38.64°NLon: 88.96°WElev: 574ft.

Fair

47°F

8°C

Humidity 77%
Wind Speed SE 3 mph
Barometer 30.01 in
Dewpoint 40°F (4°C)
Visibility 10.00 mi
Last update 17 Feb 1:15 am CST
Extended Forecast for

Vandalia IL

  • Overnight

    Overnight: Partly cloudy, with a low around 41. South wind around 6 mph.

    Low: 41 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 58. South wind 6 to 15 mph, with gusts as high as 28 mph.

    High: 58 °F

    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: A slight chance of rain between midnight and 3am. Mostly cloudy, with a low around 53. South wind 14 to 18 mph, with gusts as high as 37 mph. Chance of precipitation is 20%.

    Low: 53 °F

    Cloudy then
    Slight Chance
    Rain

  • Wednesday

    Wednesday: Sunny, with a high near 69. Southwest wind 6 to 16 mph, with gusts as high as 25 mph.

    High: 69 °F

    Sunny

  • Wednesday Night

    Wednesday Night: A 30 percent chance of showers, mainly after midnight. Partly cloudy, with a low around 48. South wind around 6 mph.

    Low: 48 °F

    Chance
    Showers

  • Thursday

    Thursday: A chance of showers, with thunderstorms also possible after noon. Partly sunny, with a high near 68. Chance of precipitation is 50%.

    High: 68 °F

    Chance
    Showers then
    Chance
    T-storms

  • Thursday Night

    Thursday Night: A 30 percent chance of showers and thunderstorms before midnight. Mostly clear, with a low around 36.

    Low: 36 °F

    Chance
    T-storms then
    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 48.

    High: 48 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 29.

    Low: 29 °F

    Partly Cloudy

Detailed Forecast

Overnight
Partly cloudy, with a low around 41. South wind around 6 mph.
Tuesday
Mostly cloudy, with a high near 58. South wind 6 to 15 mph, with gusts as high as 28 mph.
Tuesday Night
A slight chance of rain between midnight and 3am. Mostly cloudy, with a low around 53. South wind 14 to 18 mph, with gusts as high as 37 mph. Chance of precipitation is 20%.
Wednesday
Sunny, with a high near 69. Southwest wind 6 to 16 mph, with gusts as high as 25 mph.
Wednesday Night
A 30 percent chance of showers, mainly after midnight. Partly cloudy, with a low around 48. South wind around 6 mph.
Thursday
A chance of showers, with thunderstorms also possible after noon. Partly sunny, with a high near 68. Chance of precipitation is 50%.
Thursday Night
A 30 percent chance of showers and thunderstorms before midnight. Mostly clear, with a low around 36.
Friday
Sunny, with a high near 48.
Friday Night
Partly cloudy, with a low around 29.
Saturday
A 30 percent chance of snow, mainly after noon. Mostly sunny, with a high near 43.
Saturday Night
A 20 percent chance of snow. Partly cloudy, with a low around 25.
Sunday
Sunny, with a high near 37.
Sunday Night
Mostly clear, with a low around 18.
Monday
Sunny, with a high near 37.
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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:
1:01 am CST Feb 17, 2026
Forecast Valid:
1am CST Feb 17, 2026-6pm CST Feb 23, 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