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.

Partly Cloudy and Breezy

N/A

Humidity NA
Wind Speed W 24 G 31 mph
Barometer 29.96 in
Dewpoint N/A
Visibility 10.00 mi
Last update 18 Apr 11:35 am CDT
Extended Forecast for

Princeton IL

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 49. Breezy, with a west wind around 20 mph, with gusts as high as 30 mph.

    High: 49 °F

    Mostly Sunny
    and Breezy

  • Tonight

    Tonight: Areas of frost before 4am, then widespread frost after 5am. Otherwise, mostly clear, with a low around 33. West wind 5 to 15 mph, with gusts as high as 25 mph.

    Low: 33 °F

    Mostly Clear
    then Frost

  • Sunday

    Sunday: Widespread frost before 8am. Otherwise, mostly sunny, with a high near 54. Northwest wind 5 to 15 mph, with gusts as high as 25 mph.

    High: 54 °F

    Frost then
    Mostly Sunny

  • Sunday Night

    Sunday Night: Widespread frost after 5am. Otherwise, mostly clear, with a low around 31. Northwest wind 5 to 10 mph becoming light north after midnight. Winds could gust as high as 20 mph.

    Low: 31 °F

    Mostly Clear
    then Frost

  • Monday

    Monday: Widespread frost before 8am. Otherwise, sunny, with a high near 57.

    High: 57 °F

    Frost then
    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 47.

    Low: 47 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 75.

    High: 75 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 52.

    Low: 52 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Sunny, with a high near 77.

    High: 77 °F

    Sunny

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 49. Breezy, with a west wind around 20 mph, with gusts as high as 30 mph.
Tonight
Areas of frost before 4am, then widespread frost after 5am. Otherwise, mostly clear, with a low around 33. West wind 5 to 15 mph, with gusts as high as 25 mph.
Sunday
Widespread frost before 8am. Otherwise, mostly sunny, with a high near 54. Northwest wind 5 to 15 mph, with gusts as high as 25 mph.
Sunday Night
Widespread frost after 5am. Otherwise, mostly clear, with a low around 31. Northwest wind 5 to 10 mph becoming light north after midnight. Winds could gust as high as 20 mph.
Monday
Widespread frost before 8am. Otherwise, sunny, with a high near 57.
Monday Night
Partly cloudy, with a low around 47.
Tuesday
Mostly sunny, with a high near 75.
Tuesday Night
Partly cloudy, with a low around 52.
Wednesday
Sunny, with a high near 77.
Wednesday Night
Mostly clear, with a low around 57.
Thursday
Mostly sunny, with a high near 82.
Thursday Night
Showers likely. Mostly cloudy, with a low around 60. Chance of precipitation is 70%.
Friday
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 73.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Princeton IL
 41.37°N 89.46°W (Elev. 709 ft)
Last Update:
7:31 am CDT Apr 18, 2026
Forecast Valid:
12pm CDT Apr 18, 2026-6pm CDT Apr 24, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation