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.

Fair

N/A

Humidity NA
Wind Speed SW 8 mph
Barometer 29.83 in
Dewpoint N/A
Visibility 10.00 mi
Last update 5 Jan 8:15 am CST
Extended Forecast for

Princeton IL

  • Today

    Today: Mostly sunny, with a high near 46. Southwest wind 5 to 10 mph becoming southeast in the afternoon.

    High: 46 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 36. Southeast wind around 5 mph.

    Low: 36 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Patchy fog between 7am and 9am. Otherwise, partly sunny, with a high near 47. South wind 5 to 10 mph becoming west in the morning. Winds could gust as high as 20 mph.

    High: 47 °F

    Patchy Fog
    then Partly
    Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 31. West wind around 5 mph.

    Low: 31 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Sunny, with a high near 52.

    High: 52 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 39.

    Low: 39 °F

    Partly Cloudy

  • Thursday

    Thursday: A 40 percent chance of rain after noon. Mostly cloudy, with a high near 54.

    High: 54 °F

    Partly Sunny
    then Chance
    Rain

  • Thursday Night

    Thursday Night: Rain likely. Mostly cloudy, with a low around 39. Chance of precipitation is 60%.

    Low: 39 °F

    Rain Likely

  • Friday

    Friday: Rain likely, mainly after noon. Mostly cloudy, with a high near 46. Chance of precipitation is 60%.

    High: 46 °F

    Rain Likely

Detailed Forecast

Today
Mostly sunny, with a high near 46. Southwest wind 5 to 10 mph becoming southeast in the afternoon.
Tonight
Mostly cloudy, with a low around 36. Southeast wind around 5 mph.
Tuesday
Patchy fog between 7am and 9am. Otherwise, partly sunny, with a high near 47. South wind 5 to 10 mph becoming west in the morning. Winds could gust as high as 20 mph.
Tuesday Night
Partly cloudy, with a low around 31. West wind around 5 mph.
Wednesday
Sunny, with a high near 52.
Wednesday Night
Partly cloudy, with a low around 39.
Thursday
A 40 percent chance of rain after noon. Mostly cloudy, with a high near 54.
Thursday Night
Rain likely. Mostly cloudy, with a low around 39. Chance of precipitation is 60%.
Friday
Rain likely, mainly after noon. Mostly cloudy, with a high near 46. Chance of precipitation is 60%.
Friday Night
A chance of rain before midnight, then a chance of rain and snow. Mostly cloudy, with a low around 30. Chance of precipitation is 50%.
Saturday
A 30 percent chance of snow. Partly sunny, with a high near 34.
Saturday Night
Mostly cloudy, with a low around 19.
Sunday
Mostly sunny, with a high near 29.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Princeton IL
 41.37°N 89.46°W (Elev. 709 ft)
Last Update:
4:51 am CST Jan 5, 2026
Forecast Valid:
8am CST Jan 5, 2026-6pm CST Jan 11, 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