PRINCETON, IL 61356 Weather Forecast & Current Conditions

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PERU, IL
Current Weather

4:35 AM CDT JUL 21, 2025
Overcast
66°F
Feels Like: 66°F
Dewpoint: 64°F
Rel. Hum.: 93%
Visibility: 10 miles
Wind: ENE at 7 mph
Pressure: 30.02 inches
Last 72 hours

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PRINCETON, IL 61356
Weather Forecast

Snowfall Forecast pages
Snow Depth pages
TODAY
Mostly cloudy. Humid with highs in the lower 80s. East winds 5 to 10 mph.
TONIGHT
Partly cloudy. Humid with lows in the upper 60s. East winds 5 to 10 mph.
TUESDAY
Partly sunny. Humid with highs in the mid 80s. Southeast winds 5 to 10 mph.
TUESDAY NIGHT
Partly cloudy in the evening, then becoming mostly clear. Humid with lows in the lower 70s. Southeast winds 5 to 10 mph.
WEDNESDAY
Sunny, hot with highs in the lower 90s. South winds 5 to 10 mph. Heat index values up to 106.
WEDNESDAY NIGHT AND THURSDAY
Mostly clear. Hot. Lows in the mid 70s. Highs in the lower 90s. Heat index values up to 105.
THURSDAY NIGHT
Partly cloudy with a chance of showers and thunderstorms. Lows in the lower 70s. Chance of rain 50 percent. Heat index values up to 100 early in the evening.
FRIDAY AND FRIDAY NIGHT
Mostly cloudy. A chance of showers and thunderstorms. Highs in the upper 80s. Lows around 70. Chance of rain 50 percent.
SATURDAY
Mostly sunny. A chance of showers and thunderstorms in the morning. Highs in the upper 80s. Chance of rain 40 percent.
SATURDAY NIGHT
Mostly clear. Lows in the upper 60s.
SUNDAY
Mostly sunny. Highs in the upper 80s.

Visible Weather Satellite
PRINCETON, IL 61356
Infrared Weather Satellite
PRINCETON, IL 61356
NEXRAD Weather Radar
PRINCETON, IL 61356

PERU, IL 3 hourly weather forecast

weather forecast created  7:00 PM CDT  7/20/2025
Monday
21 JUL 2025
PRINCETON, IL 61356 weather forecast Day 1, 0 hours 1 AM 66° 66° Partly Cloudy 13%
RAIN
<.01 in
0% Thunder
( 8% severe)
ENE   8 90% 63°
Low 63° PRINCETON, IL 61356 weather forecast Day 1, 3 hours 4 AM 64° 64° Partly Cloudy ENE   8 93% 62°
High 83° PRINCETON, IL 61356 weather forecast Day 1, 6 hours 7 AM 66° 66° Mostly Cloudy 4%

0% Thunder
( 9% severe)
ENE   8 93% 64°

Partly Cloudy



PRINCETON, IL 61356 weather forecast Day 1, 9 hours 10 AM 75° 75° Partly Cloudy E   9 79% 68°
PRINCETON, IL 61356 weather forecast Day 1, 12 hours 1 PM 80° 83° Partly Cloudy 5%

0% Thunder
( 15% severe)
ESE   10 72% 70°
PRINCETON, IL 61356 weather forecast Day 1, 15 hours 4 PM 82° 86° Partly Cloudy E   9 67% 70°
PRINCETON, IL 61356 weather forecast Day 1, 18 hours 7 PM 79° 82° Partly Cloudy 8%

0% Thunder
( 15% severe)
E   8 77% 71°
PRINCETON, IL 61356 weather forecast Day 1, 21 hours 10 PM 73° 73° Partly Cloudy E   8 87% 69°
Tuesday
22 JUL 2025
PRINCETON, IL 61356 weather forecast Day 2, 0 hours 1 AM 70° 70° Partly Cloudy 10%
RAIN
<.01 in
0% Thunder
( 18% severe)
E   7 90% 67°
Low 68° PRINCETON, IL 61356 weather forecast Day 2, 3 hours 4 AM 69° 69° Partly Cloudy E   7 90% 66°
High 86° PRINCETON, IL 61356 weather forecast Day 2, 6 hours 7 AM 70° 70° Partly Cloudy 4%

0% Thunder
( 14% severe)
ESE   8 90% 67°

Partly Cloudy



PRINCETON, IL 61356 weather forecast Day 2, 9 hours 10 AM 77° 79° Mostly Cloudy SE   9 79% 70°
PRINCETON, IL 61356 weather forecast Day 2, 12 hours 1 PM 83° 89° Partly Cloudy 4%

0% Thunder
( 18% severe)
SSE   9 72% 73°
PRINCETON, IL 61356 weather forecast Day 2, 15 hours 4 PM 85° 93° Partly Cloudy SSE   9 70% 74°
PRINCETON, IL 61356 weather forecast Day 2, 18 hours 7 PM 83° 90° Partly Cloudy 2%

0% Thunder
( 12% severe)
SSE   8 77% 75°
PRINCETON, IL 61356 weather forecast Day 2, 21 hours 10 PM 77° 78° Partly Cloudy SSE   7 90% 74°

PERU, IL extended weather forecast

BAD DAY
BAD DATE
BAD DAY
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Low 69° Low 73° Low 76° Low 72° Low 71°
High 89° High 95° High 93° High 89° High 91°
PRINCETON, IL 61356 weather forecast Day 3 PRINCETON, IL 61356 weather forecast Day 4 PRINCETON, IL 61356 weather forecast Day 5 PRINCETON, IL 61356 weather forecast Day 6 PRINCETON, IL 61356 weather forecast Day 7
Mostly Cloudy
15% Rain
Partly Cloudy
20% Rain
Partly Cloudy
36% Rain
Mostly Cloudy
58% Rain
Partly Cloudy
34% Rain
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