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

Hazardous Weather Conditions

Current conditions at

Illinois Valley Regional Airport (KVYS)

Lat: 41.35°NLon: 89.15°WElev: 650ft.

Fair

81°F

27°C

Humidity 70%
Wind Speed SW 8 mph
Barometer 30.05 in
Dewpoint 70°F (21°C)
Visibility 10.00 mi
Heat Index85°F (29°C)
Last update 4 Aug 11:02 am CDT
Extended Forecast for

Spring Valley IL

  • Today

    Today: Mostly sunny, with a high near 87. Southwest wind around 5 mph.

    High: 87 °F

    Mostly Sunny

  • Tonight

    Tonight: A 20 percent chance of showers and thunderstorms after 4am. Mostly cloudy, with a low around 68. South wind around 5 mph.

    Low: 68 °F

    Mostly Cloudy
    then Slight
    Chance
    T-storms

  • Wednesday

    Wednesday: A 50 percent chance of showers and thunderstorms, mainly after 3pm. Mostly cloudy, with a high near 82. Calm wind becoming southwest around 5 mph in the morning.

    High: 82 °F

    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: Showers and possibly a thunderstorm before 4am, then showers likely. Low around 65. Northwest wind around 5 mph becoming calm in the evening. Chance of precipitation is 90%. New rainfall amounts between 1 and 2 inches possible.

    Low: 65 °F

    Showers

  • Thursday

    Thursday: A chance of showers, with thunderstorms also possible after 4pm. Partly sunny, with a high near 80. Chance of precipitation is 30%.

    High: 80 °F

    Chance
    Showers then
    Chance
    T-storms

  • Thursday Night

    Thursday Night: A chance of thunderstorms before 7pm. Partly cloudy, with a low around 63. Chance of precipitation is 30%.

    Low: 63 °F

    Chance
    T-storms then
    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 82.

    High: 82 °F

    Mostly Sunny

  • Friday Night

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

    Low: 65 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 85.

    High: 85 °F

    Mostly Sunny

Detailed Forecast

Today
Mostly sunny, with a high near 87. Southwest wind around 5 mph.
Tonight
A 20 percent chance of showers and thunderstorms after 4am. Mostly cloudy, with a low around 68. South wind around 5 mph.
Wednesday
A 50 percent chance of showers and thunderstorms, mainly after 3pm. Mostly cloudy, with a high near 82. Calm wind becoming southwest around 5 mph in the morning.
Wednesday Night
Showers and possibly a thunderstorm before 4am, then showers likely. Low around 65. Northwest wind around 5 mph becoming calm in the evening. Chance of precipitation is 90%. New rainfall amounts between 1 and 2 inches possible.
Thursday
A chance of showers, with thunderstorms also possible after 4pm. Partly sunny, with a high near 80. Chance of precipitation is 30%.
Thursday Night
A chance of thunderstorms before 7pm. Partly cloudy, with a low around 63. Chance of precipitation is 30%.
Friday
Mostly sunny, with a high near 82.
Friday Night
Mostly clear, with a low around 65.
Saturday
Mostly sunny, with a high near 85.
Saturday Night
Mostly clear, with a low around 70.
Sunday
Mostly sunny, with a high near 87.
Sunday Night
A 30 percent chance of showers. Partly cloudy, with a low around 71.
Monday
Partly sunny, with a high near 87.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Spring Valley IL
 41.32°N 89.17°W (Elev. 571 ft)
Last Update:
9:01 am CDT Aug 4, 2026
Forecast Valid:
11am CDT Aug 4, 2026-6pm CDT Aug 10, 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