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.

Rain

45°F

7°C

Humidity 97%
Wind Speed E 6 mph
Barometer 29.85 in
Dewpoint 44°F (7°C)
Visibility 5.00 mi
Wind Chill42°F (6°C)
Last update 15 Feb 4:55 am CST
Extended Forecast for

Vandalia IL

  • Overnight

    Overnight: A 20 percent chance of rain. Cloudy, with a low around 42. Northeast wind around 6 mph.

    Low: 42 °F

    Slight Chance
    Rain

  • Sunday

    Sunday: Cloudy through mid morning, then gradual clearing, with a high near 54. Northeast wind 5 to 10 mph becoming light northwest in the afternoon.

    High: 54 °F

    Gradual
    Clearing

  • Sunday Night

    Sunday Night: Patchy fog after 2am. Otherwise, mostly clear, with a low around 35. Calm wind.

    Low: 35 °F

    Mostly Clear
    then Patchy
    Fog

  • Washington's Birthday

    Washington's Birthday: Patchy fog before 11am. Otherwise, mostly sunny, with a high near 60. Light southwest wind becoming south 6 to 11 mph in the morning.

    High: 60 °F

    Patchy Fog
    then Partly
    Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 41. South wind around 7 mph.

    Low: 41 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 62.

    High: 62 °F

    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 55. Breezy.

    Low: 55 °F

    Mostly Cloudy
    then Mostly
    Cloudy and
    Breezy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 66.

    High: 66 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 41.

    Low: 41 °F

    Mostly Clear

Detailed Forecast

Overnight
A 20 percent chance of rain. Cloudy, with a low around 42. Northeast wind around 6 mph.
Sunday
Cloudy through mid morning, then gradual clearing, with a high near 54. Northeast wind 5 to 10 mph becoming light northwest in the afternoon.
Sunday Night
Patchy fog after 2am. Otherwise, mostly clear, with a low around 35. Calm wind.
Washington's Birthday
Patchy fog before 11am. Otherwise, mostly sunny, with a high near 60. Light southwest wind becoming south 6 to 11 mph in the morning.
Monday Night
Mostly cloudy, with a low around 41. South wind around 7 mph.
Tuesday
Mostly cloudy, with a high near 62.
Tuesday Night
Mostly cloudy, with a low around 55. Breezy.
Wednesday
Mostly sunny, with a high near 66.
Wednesday Night
Mostly clear, with a low around 41.
Thursday
A 30 percent chance of showers after noon. Mostly sunny, with a high near 68.
Thursday Night
A 30 percent chance of showers. Partly cloudy, with a low around 38.
Friday
A 20 percent chance of showers. Partly sunny, with a high near 51.
Friday Night
A 20 percent chance of showers. Mostly cloudy, with a low around 28.
Saturday
Mostly sunny, with a high near 47.
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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:
4:21 am CST Feb 15, 2026
Forecast Valid:
5am CST Feb 15, 2026-6pm CST Feb 21, 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