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

70°F

21°C

Humidity 99%
Wind Speed Calm
Barometer 29.90 in
Dewpoint 70°F (21°C)
Visibility 5.00 mi
Last update 17 Jun 12:55 am CDT
Extended Forecast for

Vandalia IL

  • Overnight

    Overnight: Mostly cloudy, with a low around 69. Calm wind.

    Low: 69 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly cloudy, then gradually becoming sunny, with a high near 86. Calm wind becoming south around 6 mph in the afternoon.

    High: 86 °F

    Decreasing
    Clouds

  • Tuesday Night

    Tuesday Night: A slight chance of showers and thunderstorms between 11pm and midnight. Partly cloudy, with a low around 71. South wind 3 to 6 mph. Chance of precipitation is 20%.

    Low: 71 °F

    Slight Chance
    T-storms then
    Partly Cloudy

  • Wednesday

    Wednesday: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 1pm. High near 84. Southwest wind 8 to 14 mph. Chance of precipitation is 80%.

    High: 84 °F

    Chance
    Showers then
    Showers

  • Wednesday Night

    Wednesday Night: A 50 percent chance of showers and thunderstorms before 1am. Mostly cloudy, with a low around 67. Southwest wind 6 to 10 mph.

    Low: 67 °F

    Chance
    T-storms

  • Juneteenth

    Juneteenth: Sunny, with a high near 83.

    High: 83 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 66.

    Low: 66 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 88.

    High: 88 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 73.

    Low: 73 °F

    Mostly Clear

Detailed Forecast

Overnight
Mostly cloudy, with a low around 69. Calm wind.
Tuesday
Mostly cloudy, then gradually becoming sunny, with a high near 86. Calm wind becoming south around 6 mph in the afternoon.
Tuesday Night
A slight chance of showers and thunderstorms between 11pm and midnight. Partly cloudy, with a low around 71. South wind 3 to 6 mph. Chance of precipitation is 20%.
Wednesday
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 1pm. High near 84. Southwest wind 8 to 14 mph. Chance of precipitation is 80%.
Wednesday Night
A 50 percent chance of showers and thunderstorms before 1am. Mostly cloudy, with a low around 67. Southwest wind 6 to 10 mph.
Juneteenth
Sunny, with a high near 83.
Thursday Night
Mostly clear, with a low around 66.
Friday
Sunny, with a high near 88.
Friday Night
Mostly clear, with a low around 73.
Saturday
Sunny, with a high near 91.
Saturday Night
Mostly clear, with a low around 75.
Sunday
Sunny, with a high near 92.
Sunday Night
Mostly clear, with a low around 74.
Monday
A 20 percent chance of showers and thunderstorms. Sunny, with a high near 92.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Vandalia IL
 38.98°N 89.1°W (Elev. 499 ft)
Last Update:
10:21 pm CDT Jun 16, 2025
Forecast Valid:
1am CDT Jun 17, 2025-6pm CDT Jun 23, 2025
 
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