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April 2026 Review and Outlooks to May and May-July

Current conditions at

Illinois Valley Regional Airport (KVYS)

Lat: 41.35°NLon: 89.15°WElev: 650ft.

Partly Cloudy

45°F

7°C

Humidity	66%
Wind Speed	N 6 mph
Barometer	29.88 in
Dewpoint	34°F (1°C)
Visibility	10.00 mi
Wind Chill	42°F (6°C)
Last update	6 May 3:40 am CDT

More Information:

Local Forecast Office More Local Wx 3 Day History Hourly Weather Forecast

Extended Forecast for

Princeton IL

Overnight
Low: 40 °F
Partly Cloudy
Wednesday
High: 57 °F
Partly Sunny
Wednesday Night
Low: 38 °F
Decreasing
Clouds
Thursday
High: 62 °F
Sunny then
Chance
Showers
Thursday Night
Low: 46 °F
Partly Cloudy
Friday
High: 66 °F
Chance
Showers
Friday Night
Low: 47 °F
Partly Cloudy
Saturday
High: 76 °F
Mostly Sunny
Saturday Night
Low: 51 °F
Chance
Showers

Detailed Forecast

Overnight

Partly cloudy, with a low around 40. North wind around 5 mph.

Wednesday

Partly sunny, with a high near 57. Northwest wind 5 to 15 mph.

Wednesday Night

Mostly cloudy, then gradually becoming clear, with a low around 38. Northwest wind 5 to 10 mph becoming light west in the evening.

Thursday

A 30 percent chance of showers, mainly between 1pm and 4pm. Sunny, with a high near 62. Light southwest wind becoming west 10 to 15 mph in the morning. Winds could gust as high as 20 mph.

Thursday Night

Partly cloudy, with a low around 46.

Friday

A 50 percent chance of showers. Mostly cloudy, with a high near 66.

Friday Night

Partly cloudy, with a low around 47.

Saturday

Mostly sunny, with a high near 76.

Saturday Night

A 50 percent chance of showers. Mostly cloudy, with a low around 51.

Sunday

Partly sunny, with a high near 66.