Current conditions at

Illinois Valley Regional Airport (KVYS)

Lat: 41.35°NLon: 89.15°WElev: 650ft.

Fair

43°F

6°C

Humidity 66%
Wind Speed E 5 mph
Barometer 29.97 in
Dewpoint 32°F (0°C)
Visibility 10.00 mi
Wind Chill40°F (4°C)
Last update 14 Feb 6:21 pm CST
Extended Forecast for

Princeton IL

  • Tonight

    Tonight: Cloudy, then gradually becoming partly cloudy, with a low around 35. Southeast wind around 5 mph becoming calm  in the evening.

    Low: 35 °F

    Decreasing
    Clouds

  • Sunday

    Sunday: Sunny, with a high near 59. West wind 5 to 10 mph.

    High: 59 °F

    Sunny

  • Sunday Night

    Sunday Night: Increasing clouds, with a low around 37. Calm wind becoming south around 5 mph after midnight.

    Low: 37 °F

    Increasing
    Clouds

  • Washington's Birthday

    Washington's Birthday: Mostly sunny, with a high near 63. Southwest wind 5 to 15 mph, with gusts as high as 20 mph.

    High: 63 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 42.

    Low: 42 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 62.

    High: 62 °F

    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: A 30 percent chance of rain after midnight.  Partly cloudy, with a low around 53.

    Low: 53 °F

    Partly Cloudy
    then Chance
    Rain

  • Wednesday

    Wednesday: Sunny, with a high near 66. Breezy.

    High: 66 °F

    Sunny and
    Breezy

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 38.

    Low: 38 °F

    Mostly Clear

Detailed Forecast

Tonight
Cloudy, then gradually becoming partly cloudy, with a low around 35. Southeast wind around 5 mph becoming calm in the evening.
Sunday
Sunny, with a high near 59. West wind 5 to 10 mph.
Sunday Night
Increasing clouds, with a low around 37. Calm wind becoming south around 5 mph after midnight.
Washington's Birthday
Mostly sunny, with a high near 63. Southwest wind 5 to 15 mph, with gusts as high as 20 mph.
Monday Night
Mostly cloudy, with a low around 42.
Tuesday
Mostly cloudy, with a high near 62.
Tuesday Night
A 30 percent chance of rain after midnight. Partly cloudy, with a low around 53.
Wednesday
Sunny, with a high near 66. Breezy.
Wednesday Night
Mostly clear, with a low around 38.
Thursday
A 30 percent chance of rain after noon. Mostly sunny, with a high near 56.
Thursday Night
A 30 percent chance of rain. Mostly cloudy, with a low around 31.
Friday
Partly sunny, with a high near 43.
Friday Night
Mostly cloudy, with a low around 23.
Saturday
Partly sunny, with a high near 42.
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ABOUT THIS FORECAST

 
Point Forecast:
Princeton IL
 41.37°N 89.46°W (Elev. 709 ft)
6:22 pm CST Feb 14, 2026
6pm CST Feb 14, 2026-6pm CST Feb 21, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database