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.

Fair

39°F

4°C

Humidity 90%
Wind Speed SE 5 mph
Barometer 29.93 in
Dewpoint 36°F (2°C)
Visibility 10.00 mi
Wind Chill35°F (2°C)
Last update 17 Feb 2:50 am CST
Extended Forecast for

Tiskilwa IL

  • Overnight

    Overnight: Mostly cloudy, with a low around 39. South wind around 5 mph.

    Low: 39 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: A slight chance of sprinkles after 3pm. Mostly cloudy, with a high near 61. South wind 5 to 10 mph increasing to 10 to 15 mph in the afternoon. Winds could gust as high as 35 mph.

    High: 61 °F

    Slight Chance
    Sprinkles

  • Tuesday Night

    Tuesday Night: A 50 percent chance of showers, mainly before 3am. Mostly cloudy, with a low around 51. Breezy, with a southeast wind 15 to 20 mph becoming southwest after midnight. Winds could gust as high as 40 mph.

    Low: 51 °F

    Breezy.
    Slight Chance
    Showers then
    Chance
    Showers

  • Wednesday

    Wednesday: Sunny, with a high near 66. Breezy, with a west wind 10 to 20 mph, with gusts as high as 30 mph.

    High: 66 °F

    Sunny and
    Breezy

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 41.

    Low: 41 °F

    Mostly Cloudy

  • Thursday

    Thursday: A 50 percent chance of showers after noon. Partly sunny, with a high near 65.

    High: 65 °F

    Partly Sunny
    then Chance
    Showers

  • Thursday Night

    Thursday Night: A 50 percent chance of rain. Mostly cloudy, with a low around 34.

    Low: 34 °F

    Chance Rain

  • Friday

    Friday: Partly sunny, with a high near 43. Breezy.

    High: 43 °F

    Partly Sunny
    and Breezy

  • Friday Night

    Friday Night: Mostly clear, with a low around 25.

    Low: 25 °F

    Mostly Clear

Detailed Forecast

Overnight
Mostly cloudy, with a low around 39. South wind around 5 mph.
Tuesday
A slight chance of sprinkles after 3pm. Mostly cloudy, with a high near 61. South wind 5 to 10 mph increasing to 10 to 15 mph in the afternoon. Winds could gust as high as 35 mph.
Tuesday Night
A 50 percent chance of showers, mainly before 3am. Mostly cloudy, with a low around 51. Breezy, with a southeast wind 15 to 20 mph becoming southwest after midnight. Winds could gust as high as 40 mph.
Wednesday
Sunny, with a high near 66. Breezy, with a west wind 10 to 20 mph, with gusts as high as 30 mph.
Wednesday Night
Mostly cloudy, with a low around 41.
Thursday
A 50 percent chance of showers after noon. Partly sunny, with a high near 65.
Thursday Night
A 50 percent chance of rain. Mostly cloudy, with a low around 34.
Friday
Partly sunny, with a high near 43. Breezy.
Friday Night
Mostly clear, with a low around 25.
Saturday
Mostly sunny, with a high near 41.
Saturday Night
Mostly cloudy, with a low around 21.
Sunday
Mostly sunny, with a high near 34.
Sunday Night
Mostly clear, with a low around 17.
Monday
Sunny, with a high near 36.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Tiskilwa IL
 41.29°N 89.5°W (Elev. 535 ft)
Last Update:
2:46 am CST Feb 17, 2026
Forecast Valid:
3am CST Feb 17, 2026-6pm CST Feb 23, 2026
 
Forecast Discussion
 
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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