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

Heat Builds in the West; Extremely Critical Fire Weather in the Northwest

A heat wave over the Southwest will intensify this week, peaking and expanding into the Intermountain West and northern High Plains this weekend. Critical to extremely critical fire weather conditions are forecast from the Northwest and the northern Great Basin this weekend. Particularly Dangerous Situation Red Flag Warnings have been issued. Read More >

Current conditions at

Salem, Salem-Leckrone Airport (KSLO)

Lat: 38.64°NLon: 88.96°WElev: 574ft.

Overcast

71°F

22°C

Humidity 100%
Wind Speed NA
Barometer 29.68 in
Dewpoint 71°F (22°C)
Visibility 10.00 mi
Last update 1 Aug 11:35 pm CDT
Extended Forecast for

2 Miles S Vandalia IL

  • Overnight

    Overnight: Drizzle. Mostly cloudy, with a low around 66. North wind 11 to 14 mph.

    Low: 66 °F

    Drizzle

  • Sunday

    Sunday: Drizzle likely, mainly before 1pm. Partly sunny, with a high near 79. North wind 13 to 15 mph, with gusts as high as 23 mph.

    High: 79 °F

    Drizzle
    Likely then
    Chance
    Drizzle

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 63. North wind 5 to 9 mph becoming light.

    Low: 63 °F

    Mostly Clear

  • Monday

    Monday: Mostly sunny, with a high near 82. North wind around 6 mph.

    High: 82 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 63. Light northeast wind.

    Low: 63 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 83.

    High: 83 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 65.

    Low: 65 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 84.

    High: 84 °F

    Sunny

  • Wednesday Night

    Wednesday Night: A 30 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 67.

    Low: 67 °F

    Partly Cloudy
    then Chance
    T-storms

Detailed Forecast

Overnight
Drizzle. Mostly cloudy, with a low around 66. North wind 11 to 14 mph.
Sunday
Drizzle likely, mainly before 1pm. Partly sunny, with a high near 79. North wind 13 to 15 mph, with gusts as high as 23 mph.
Sunday Night
Mostly clear, with a low around 63. North wind 5 to 9 mph becoming light.
Monday
Mostly sunny, with a high near 82. North wind around 6 mph.
Monday Night
Mostly clear, with a low around 63. Light northeast wind.
Tuesday
Sunny, with a high near 83.
Tuesday Night
Mostly clear, with a low around 65.
Wednesday
Sunny, with a high near 84.
Wednesday Night
A 30 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 67.
Thursday
A 40 percent chance of showers and thunderstorms, mainly before 1pm. Partly sunny, with a high near 84.
Thursday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 69.
Friday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 86.
Friday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 70.
Saturday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 89.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles S Vandalia IL
 38.96°N 89.11°W (Elev. 531 ft)
Last Update:
11:26 pm CDT Aug 1, 2026
Forecast Valid:
12am CDT Aug 2, 2026-6pm CDT Aug 8, 2026
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation