Princeton, NJ Weather & Climate Normals
Princeton's real weather, in one number
Princeton, NJ scores 47/100 on this site's reading of NOAA's own 30-year normals: strongly seasonal. Comfortable weather is limited to a shorter window; summers, winters, or precipitation swing wide. 5 of the year's 12 months average between 55 and 75°F, the range this site counts as mild.
Princeton's hottest and coldest months
Princeton's hottest month is Jul, averaging 75°F; its coldest is Jan, averaging 30°F, a 44.7°F swing across the year, a middling gap by national standards.
Princeton's weather across the year
| Month | Avg high | Avg low | Precip | Snow |
|---|---|---|---|---|
| Jan | 38°F | 22°F | 3.76in | 5.9in |
| Feb | 41°F | 23°F | 3.02in | 8.3in |
| Mar | 50°F | 30°F | 4.3in | 3.9in |
| Apr | 62°F | 40°F | 4.05in | 0.9in |
| May | 71°F | 50°F | 4.35in | 0in |
| Jun | 80°F | 59°F | 4.69in | 0in |
| Jul | 85°F | 64°F | 5.51in | 0in |
| Aug | 83°F | 62°F | 4.27in | 0in |
| Sep | 77°F | 55°F | 4.48in | 0in |
| Oct | 65°F | 44°F | 4.44in | 0in |
| Nov | 54°F | 35°F | 3.49in | 0.3in |
| Dec | 43°F | 28°F | 4.62in | 4.6in |
May, Jun, Jul, Aug, and Sep are the best time to see Princeton at its mildest; the rest of the year, plan around Jan's cold.
Rain and snow in Princeton
Princeton averages 50.98in of precipitation a year across roughly 131 days with measurable rain or snow, and 23.9in of snow a year.
Where Princeton ranks
Princeton ranks 2611 of 4876 US cities in this dataset for comfort score, and 75 of 194 within NJ. About 31,445 people live there.
If you need tomorrow's forecast, not the 30-year average
Everything above is a 30-year average from Wertsville 4 Ne, NJ US, 8.8 miles from Princeton, not a prediction for any specific day.
More on how this is worked out
What a 30-year climate normal actually is · Why this uses the nearest NOAA station