Current conditions at

Illinois Valley Regional Airport (KVYS)

Lat: 41.35°NLon: 89.15°WElev: 650ft.

Fair

67°F

19°C

Humidity 51%
Wind Speed NW 6 mph
Barometer 29.87 in
Dewpoint 48°F (9°C)
Visibility 10.00 mi
Last update 20 Mar 6:55 pm CDT
Extended Forecast for

Princeton IL

  • Tonight

    Tonight: Mostly cloudy, with a low around 42. North wind around 5 mph becoming east after midnight.

    Low: 42 °F

    Mostly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 75. Southeast wind 5 to 10 mph becoming southwest in the afternoon. Winds could gust as high as 20 mph.

    High: 75 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 56. South wind around 10 mph, with gusts as high as 20 mph.

    Low: 56 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly cloudy, with a high near 63. Breezy, with a southwest wind 10 to 20 mph becoming north in the afternoon. Winds could gust as high as 25 mph.

    High: 63 °F

    Mostly Cloudy
    then Mostly
    Cloudy and
    Breezy

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 32.

    Low: 32 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 50.

    High: 50 °F

    Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 34.

    Low: 34 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 58.

    High: 58 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 37.

    Low: 37 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Mostly cloudy, with a low around 42. North wind around 5 mph becoming east after midnight.
Saturday
Sunny, with a high near 75. Southeast wind 5 to 10 mph becoming southwest in the afternoon. Winds could gust as high as 20 mph.
Saturday Night
Partly cloudy, with a low around 56. South wind around 10 mph, with gusts as high as 20 mph.
Sunday
Mostly cloudy, with a high near 63. Breezy, with a southwest wind 10 to 20 mph becoming north in the afternoon. Winds could gust as high as 25 mph.
Sunday Night
Partly cloudy, with a low around 32.
Monday
Sunny, with a high near 50.
Monday Night
Mostly cloudy, with a low around 34.
Tuesday
Partly sunny, with a high near 58.
Tuesday Night
Mostly cloudy, with a low around 37.
Wednesday
Mostly cloudy, with a high near 56.
Wednesday Night
Mostly cloudy, with a low around 46.
Thursday
Partly sunny, with a high near 70.
Thursday Night
Mostly cloudy, with a low around 31.
Friday
Partly sunny, with a high near 46.
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ABOUT THIS FORECAST

 
Point Forecast:
Princeton IL
 41.37°N 89.46°W (Elev. 709 ft)
6:26 pm CDT Mar 20, 2026
7pm CDT Mar 20, 2026-6pm CDT Mar 27, 2026
 
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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