NimbocastPrinceton, NJ Weather
Live radar, hourly and 7-day forecast, and National Weather Service alerts for Princeton, Mercer County, New Jersey.
Updated Jul 29, 2026, 5:09 PM local time · Radar refreshes every 5 minutes
🌤️
Princeton
83°F
Wind 11 mph
Humidity 48%
Cloud cover 37%
UV index 6
Alerts 0
Active alerts
✓
No active National Weather Service alerts for Princeton, NJ.
Princeton weather radar
Light
Heavy
Next 24 hours
Now
🌤️
83°F
6%
6 PM
☁️
78°F
10%
7 PM
⛅
78°F
9%
8 PM
☁️
75°F
12%
9 PM
☁️
73°F
6%
10 PM
☁️
71°F
5%
11 PM
☁️
71°F
6%
12 AM
☁️
70°F
8%
1 AM
⛅
69°F
8%
2 AM
☀️
68°F
8%
3 AM
☀️
67°F
4%
4 AM
☀️
67°F
5%
5 AM
☀️
66°F
5%
6 AM
☁️
67°F
2%
7 AM
🌤️
69°F
2%
8 AM
☁️
69°F
2%
9 AM
🌦️
69°F
3%
10 AM
⛅
74°F
3%
11 AM
⛅
75°F
7%
12 PM
☁️
77°F
8%
1 PM
☁️
75°F
8%
2 PM
⛅
78°F
6%
3 PM
🌦️
71°F
7%
4 PM
⛅
75°F
10%
7-day forecast
Today
Jul 29
🌦️
84°F
67°F
65%
Thu
Jul 30
🌦️
78°F
66°F
14%
Fri
Jul 31
☁️
84°F
64°F
6%
Sat
Aug 1
☁️
88°F
66°F
3%
Sun
Aug 2
☁️
87°F
66°F
36%
Mon
Aug 3
⛈️
77°F
65°F
36%
Tue
Aug 4
☁️
85°F
60°F
14%
Weather near Princeton
8 mi
Mercerville-Hamilton Square, NJ9 mi
Hillsborough, NJ9 mi
Ewing, NJ10 mi
Trenton, NJ12 mi
North Brunswick, NJ14 mi
New Brunswick, NJ14 mi
East Brunswick, NJ14 mi
Somerset, NJ
Alerts are relayed from the National Weather Service and may lag
the official source. In a life-threatening situation always follow
weather.gov and local emergency
broadcasts.