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

Illinois Valley Regional Airport (KVYS)

Lat: 41.35°NLon: 89.15°WElev: 650ft.

Overcast

N/A

Humidity NA
Wind Speed N 9 mph
Barometer 30.10 in
Dewpoint N/A
Visibility 10.00 mi
Last update 14 Oct 3:35 pm CDT
Extended Forecast for

Troy Grove IL

  • Tonight

    Tonight: A 20 percent chance of showers after 1am. Mostly cloudy, with a low around 56. East northeast wind around 10 mph, with gusts as high as 15 mph.

    Low: 56 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Thursday

    Thursday: Showers, with thunderstorms also possible after 4pm. High near 62. East wind 5 to 10 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

    High: 62 °F

    Showers

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 47. Breezy, with an east wind 5 to 10 mph becoming west northwest 15 to 20 mph in the evening. Winds could gust as high as 30 mph. Chance of precipitation is 50%.

    Low: 47 °F

    Chance
    Showers and
    Breezy

  • Friday

    Friday: A 50 percent chance of showers. Partly sunny, with a high near 55. Breezy, with a northwest wind around 20 mph, with gusts as high as 30 mph.

    High: 55 °F

    Chance
    Showers and
    Breezy

  • Friday Night

    Friday Night: Patchy frost after 4am. Otherwise, mostly clear, with a low around 35. Breezy, with a north wind 15 to 20 mph decreasing to 10 to 15 mph after midnight.

    Low: 35 °F

    Partly Cloudy
    and Breezy
    then Patchy
    Frost

  • Saturday

    Saturday: Areas of frost before 8am. Otherwise, sunny, with a high near 58.

    High: 58 °F

    Areas Frost
    then Sunny

  • Saturday Night

    Saturday Night: Clear, with a low around 38.

    Low: 38 °F

    Clear

  • Sunday

    Sunday: Sunny, with a high near 65.

    High: 65 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 41.

    Low: 41 °F

    Mostly Clear

Detailed Forecast

Tonight
A 20 percent chance of showers after 1am. Mostly cloudy, with a low around 56. East northeast wind around 10 mph, with gusts as high as 15 mph.
Thursday
Showers, with thunderstorms also possible after 4pm. High near 62. East wind 5 to 10 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Thursday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 47. Breezy, with an east wind 5 to 10 mph becoming west northwest 15 to 20 mph in the evening. Winds could gust as high as 30 mph. Chance of precipitation is 50%.
Friday
A 50 percent chance of showers. Partly sunny, with a high near 55. Breezy, with a northwest wind around 20 mph, with gusts as high as 30 mph.
Friday Night
Patchy frost after 4am. Otherwise, mostly clear, with a low around 35. Breezy, with a north wind 15 to 20 mph decreasing to 10 to 15 mph after midnight.
Saturday
Areas of frost before 8am. Otherwise, sunny, with a high near 58.
Saturday Night
Clear, with a low around 38.
Sunday
Sunny, with a high near 65.
Sunday Night
Mostly clear, with a low around 41.
Monday
Mostly sunny, with a high near 69.
Monday Night
Partly cloudy, with a low around 44.
Tuesday
Sunny, with a high near 72.
Tuesday Night
Mostly clear, with a low around 47.
Wednesday
Sunny, with a high near 74.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Troy Grove IL
 41.47°N 89.08°W
Last Update:
3:56 pm CDT Oct 14, 2026
Forecast Valid:
5pm CDT Oct 14, 2026-6pm CDT Oct 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