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.

Fair

73°F

23°C

Humidity 87%
Wind Speed S 3 mph
Barometer 29.95 in
Dewpoint 69°F (21°C)
Visibility 10.00 mi
Last update 11 Jul 3:15 am CDT
Extended Forecast for

Vandalia IL

  • Overnight

    Overnight: Mostly clear, with a low around 70. Calm wind.

    Low: 70 °F

    Mostly Clear

  • Friday

    Friday: Mostly sunny, with a high near 91. Calm wind becoming south 5 to 8 mph in the morning.

    High: 91 °F

    Mostly Sunny

  • Friday Night

    Friday Night: A 40 percent chance of showers and thunderstorms, mainly after 1am. Partly cloudy, with a low around 71. South wind around 6 mph.

    Low: 71 °F

    Chance
    T-storms

  • Saturday

    Saturday: A chance of showers and thunderstorms before 1pm, then showers likely and possibly a thunderstorm between 1pm and 4pm, then showers and thunderstorms likely after 4pm. Mostly sunny, with a high near 90. Southwest wind 5 to 9 mph. Chance of precipitation is 60%.

    High: 90 °F

    Chance
    T-storms then
    T-storms
    Likely

  • Saturday Night

    Saturday Night: Showers and thunderstorms likely, mainly before 7pm. Mostly cloudy, with a low around 70. Southwest wind around 6 mph becoming calm in the evening. Chance of precipitation is 60%.

    Low: 70 °F

    T-storms
    Likely

  • Sunday

    Sunday: A 40 percent chance of showers and thunderstorms, mainly after 1pm. Partly sunny, with a high near 86.

    High: 86 °F

    Chance
    T-storms

  • Sunday Night

    Sunday Night: A 20 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 68.

    Low: 68 °F

    Slight Chance
    T-storms

  • Monday

    Monday: Sunny, with a high near 89.

    High: 89 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 70.

    Low: 70 °F

    Partly Cloudy

Detailed Forecast

Overnight
Mostly clear, with a low around 70. Calm wind.
Friday
Mostly sunny, with a high near 91. Calm wind becoming south 5 to 8 mph in the morning.
Friday Night
A 40 percent chance of showers and thunderstorms, mainly after 1am. Partly cloudy, with a low around 71. South wind around 6 mph.
Saturday
A chance of showers and thunderstorms before 1pm, then showers likely and possibly a thunderstorm between 1pm and 4pm, then showers and thunderstorms likely after 4pm. Mostly sunny, with a high near 90. Southwest wind 5 to 9 mph. Chance of precipitation is 60%.
Saturday Night
Showers and thunderstorms likely, mainly before 7pm. Mostly cloudy, with a low around 70. Southwest wind around 6 mph becoming calm in the evening. Chance of precipitation is 60%.
Sunday
A 40 percent chance of showers and thunderstorms, mainly after 1pm. Partly sunny, with a high near 86.
Sunday Night
A 20 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 68.
Monday
Sunny, with a high near 89.
Monday Night
Partly cloudy, with a low around 70.
Tuesday
A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 91.
Tuesday Night
Mostly cloudy, with a low around 73.
Wednesday
A 50 percent chance of showers and thunderstorms. Mostly sunny, with a high near 91.
Wednesday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 68.
Thursday
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 82.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Vandalia IL
 38.96°N 89.11°W (Elev. 531 ft)
Last Update:
1:21 am CDT Jul 11, 2025
Forecast Valid:
3am CDT Jul 11, 2025-6pm CDT Jul 17, 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