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.

Heavy Rain

45°F

7°C

Humidity 95%
Wind Speed NE 8 mph
Barometer 29.93 in
Dewpoint 44°F (7°C)
Visibility 4.00 mi
Wind Chill41°F (5°C)
Last update 14 Feb 9:35 pm CST
Extended Forecast for

Vandalia IL

  • Tonight

    Tonight: Rain, mainly before 5am. Low around 42. East wind around 8 mph. Chance of precipitation is 100%.

    Low: 42 °F

    Rain

  • Sunday

    Sunday: A 20 percent chance of rain before 7am. Cloudy through mid morning, then gradual clearing, with a high near 56. Northeast wind 5 to 10 mph becoming light north in the afternoon.

    High: 56 °F

    Slight Chance
    Rain then
    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 36. Calm wind.

    Low: 36 °F

    Mostly Clear

  • Washington's Birthday

    Washington's Birthday: Partly sunny, with a high near 59. Calm wind becoming south 5 to 9 mph in the morning.

    High: 59 °F

    Partly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 42. South wind around 6 mph.

    Low: 42 °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 56.

    Low: 56 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 68.

    High: 68 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: A 20 percent chance of rain before midnight. Mostly clear, with a low around 44.

    Low: 44 °F

    Slight Chance
    Rain then
    Mostly Clear

Detailed Forecast

Tonight
Rain, mainly before 5am. Low around 42. East wind around 8 mph. Chance of precipitation is 100%.
Sunday
A 20 percent chance of rain before 7am. Cloudy through mid morning, then gradual clearing, with a high near 56. Northeast wind 5 to 10 mph becoming light north in the afternoon.
Sunday Night
Mostly clear, with a low around 36. Calm wind.
Washington's Birthday
Partly sunny, with a high near 59. Calm wind becoming south 5 to 9 mph in the morning.
Monday Night
Mostly cloudy, with a low around 42. South wind around 6 mph.
Tuesday
Mostly cloudy, with a high near 62.
Tuesday Night
Mostly cloudy, with a low around 56.
Wednesday
Mostly sunny, with a high near 68.
Wednesday Night
A 20 percent chance of rain before midnight. Mostly clear, with a low around 44.
Thursday
A 30 percent chance of rain, mainly after noon. Mostly sunny, with a high near 66.
Thursday Night
A 30 percent chance of rain. Partly cloudy, with a low around 39.
Friday
A 20 percent chance of rain. Partly sunny, with a high near 51.
Friday Night
A 20 percent chance of snow. Partly cloudy, with a low around 30.
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:
7:06 pm CST Feb 14, 2026
Forecast Valid:
9pm CST Feb 14, 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