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WeatherLive › Illinois › Princeton

Princeton, IL Weather

Today Hourly 10-Day Weekend Monthly Radar Air Quality Climate
Current WeatherPrinceton · 9:57 AM CDT
83° | 70°
74°F
Feels like 81°
Fog
WindNW 5 mph · Gusts 7 mph
Precip83% · 0.35 in
Humidity97% · Dew point 73°
UV index6 Moderate
Air Quality24 Good
Pressure29.94 inHg
Visibility0 mi
Sunrise / Sunset6:08 AM · 7:56 PM · 13h 48m

Weather map — Princeton

Full radar →
Now
74°
44%
5 mph
10:00
76°
38%
7 mph
11:00
78°
27%
10 mph
12:00
80°
18%
10 mph
13:00
82°
15%
10 mph
14:00
82°
11%
10 mph
15:00
83°
16%
10 mph
16:00
83°
18%
10 mph
17:00
82°
19%
10 mph
18:00
80°
20%
9 mph
19:00
78°
25%
7 mph
20:00
74°
14%
7 mph
21:00
72°
15%
7 mph
22:00
71°
15%
7 mph
23:00
70°
14%
7 mph
00:00
68°
14%
6 mph
01:00
67°
14%
5 mph
02:00
66°
14%
5 mph
03:00
65°
14%
4 mph
04:00
64°
15%
6 mph
05:00
64°
15%
4 mph
06:00
64°
14%
4 mph
07:00
65°
14%
3 mph
08:00
68°
12%
3 mph

Today · Sun 8/16

High 83°
83% / 0.35 in

Showers. Winds NW at 10 mph.

Tonight · Sun 8/16

Low 64°
15% / –

Sunny. Winds N at 7 mph.

Tomorrow · Mon 8/17

80° | 64°
9% / –

Sunny. Winds N at 6 mph.

7-day trend

Princeton · temperature + precipitation

10-day forecast

Updated 9:57 AM

Details & indices

Wind
5 mph NW
Gusts 7 mph
Humidity
97%
Dew point 73°
Pressure
29.94 inHg
Rising
UV index
6 — Moderate
High today
Air Quality
Good
AQI 24 · US EPA
Allergy
None detected
—
Visibility
0 mi
Reduced
Allergy — Princeton

🌿 Conditions right now

View all →
Birch
None
Grass
None
Oak
None
Alder
None
Hazel
None
Mugwort
None
Ragweed
None

Sun & moon

Sunrise6:08 AM
Sunset7:56 PM
Length of day13h 48m
Moonrise10:35 AM
Moonset9:40 PM
Moon phase🌒 Waxing Crescent · 18%
Next full moonAug 27 Sturgeon Moon
Latitude41.3681°N
Longitude-89.4648°E

Water temps nearby

View all →
No beaches within 50 miles
🌤️No rain expected in the next 90 minutes
Now+30+60+90 min
Minute-by-minute precip · HRRR nowcast

Daily planner

computed from today's forecast
Laundry day
Poor
Line-drying weather
Grilling
Fair
Fire up the grill
Running
Poor
Lace up outside
Patio
Fair
Dinner outdoors
Nearby places in {{REGION}}
🌤️
Chicago
—
— 🌤️
Aurora
—
— 🌤️
Rockford
—
—
Joliet
Fog
74° 🌤️
Naperville
—
—
Data sources · Sunday, August 16
Where the Princeton forecast comes from
This page blends NOAA/NWS model guidance with global ensembles for the 10-day outlook, air quality and alerts. Data refreshes every hour, current conditions every 15 minutes. Coordinates: 41.3681°N, -89.4648°.
NBM + global weather models
Updated: 9:57 AM
ZIP codes in Princeton
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61314
Princeton
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61323
Princeton
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61328
Princeton
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61337
Princeton
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61338
Princeton
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61349
Princeton
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61356
Princeton
 📮
61361
Princeton
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61368
Princeton
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61376
Princeton
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61379
Princeton
Weather in Princeton
Princeton's outlook: warmest day near 85° (Monday), coldest night about 57° (Thursday). Models drop roughly 1.6 in of precipitation across the stretch — watch Friday (92%). No active NWS alerts at the moment — quiet on the hazards front. Right now Princeton is running about 4° warmer than Madison. Longer view: variable mid-latitude weather in every season.
Princeton, IL · Elev 719 ft · 41.37°N, 89.46°W · Illinois · Forecast computed for these exact coordinates
Powered by NWS/NOAA guidance, multi-model forecasts and official environmental feeds · NOAA/NWS · EPA AirNow · MET Norway · global models
Updated: 9:57 AM