Heavy Rainfall on the Western Gulf Coast; Severe Thunderstorms in the Southern Plains Friday

A multi-day heavy rainfall event will continue over the western Gulf Coast through Monday. Slight Risks of excessive rainfall have been issued, and Flood Watches remain in effect through Monday evening. Scattered severe storms capable of producing large hail and damaging winds are possible across western portions of Texas and Oklahoma on Friday. Read More >

Current conditions at

Illinois Valley Regional Airport (KVYS)

Lat: 41.35°NLon: 89.15°WElev: 650ft.

Partly Cloudy

N/A

Humidity NA
Wind Speed NE 13 mph
Barometer 30.17 in
Dewpoint N/A
Visibility 10.00 mi
Last update 21 May 10:10 pm CDT
Extended Forecast for

Princeton IL

  • Tonight

    Tonight: Mostly cloudy, with a low around 49. East wind around 10 mph, with gusts as high as 20 mph.

    Low: 49 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly cloudy, with a high near 70. East wind 10 to 15 mph, with gusts as high as 20 mph.

    High: 70 °F

    Mostly Cloudy

  • Friday Night

    Friday Night: A 30 percent chance of showers, mainly between 10pm and 1am.  Mostly cloudy, with a low around 54. East wind 5 to 10 mph, with gusts as high as 20 mph.

    Low: 54 °F

    Chance
    Showers

  • Saturday

    Saturday: Partly sunny, with a high near 76. Northeast wind around 5 mph.

    High: 76 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: A 40 percent chance of showers.  Mostly cloudy, with a low around 56.

    Low: 56 °F

    Chance
    Showers

  • Sunday

    Sunday: Partly sunny, with a high near 78.

    High: 78 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 56.

    Low: 56 °F

    Partly Cloudy

  • Memorial Day

    Memorial Day: Mostly sunny, with a high near 84.

    High: 84 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 59.

    Low: 59 °F

    Partly Cloudy

Detailed Forecast

Tonight
Mostly cloudy, with a low around 49. East wind around 10 mph, with gusts as high as 20 mph.
Friday
Mostly cloudy, with a high near 70. East wind 10 to 15 mph, with gusts as high as 20 mph.
Friday Night
A 30 percent chance of showers, mainly between 10pm and 1am. Mostly cloudy, with a low around 54. East wind 5 to 10 mph, with gusts as high as 20 mph.
Saturday
Partly sunny, with a high near 76. Northeast wind around 5 mph.
Saturday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 56.
Sunday
Partly sunny, with a high near 78.
Sunday Night
Partly cloudy, with a low around 56.
Memorial Day
Mostly sunny, with a high near 84.
Monday Night
Partly cloudy, with a low around 59.
Tuesday
Mostly sunny, with a high near 85.
Tuesday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 62.
Wednesday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 84.
Wednesday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 63.
Thursday
Mostly sunny, with a high near 86.
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ABOUT THIS FORECAST

 
Point Forecast:
Princeton IL
 41.37°N 89.46°W (Elev. 709 ft)
7:21 pm CDT May 21, 2026
10pm CDT May 21, 2026-6pm CDT May 28, 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