Spring
62°F / 42°F
March, April, May: about 11.6 in of rain and 5 in of snow.
Plan a visit
Best time to visit Princeton
May, September, October bring mild highs and the least rain.
Best time to visit
May · September · October
Highs between 65°F and 85°F with the least rain of the year. Hottest: July (86°F). Coldest nights: January (24°F). Wettest: July.
Princeton by season
Month-by-month planner
| Month | Weather | High / low | Rain | Local guides |
|---|---|---|---|---|
| January | Cold | 40°F / 24°F | 3.3 in | |
| February | Wet | 43°F / 26°F | 2.6 in | Valentine’s Day |
| March | Wet | 51°F / 33°F | 4.0 in | St. Patrick’s Day |
| April | Wet | 63°F / 42°F | 3.6 in | |
| May | Wet | 72°F / 52°F | 4.0 in | |
| June | Wet | 81°F / 61°F | 4.3 in | Fourth of July |
| July | Wet | 86°F / 67°F | 4.4 in | Fourth of July |
| August | Wet | 84°F / 65°F | 4.2 in | |
| September | Wet | 77°F / 58°F | 4.0 in | Halloween |
| October | Wet | 66°F / 46°F | 3.8 in | Halloween |
| November | Wet | 55°F / 36°F | 3.2 in | Halloween, Thanksgiving, Christmas |
| December | Wet | 44°F / 29°F | 4.0 in | Christmas, New Year’s Eve |
“Great” means highs between 65°F and 85°F with fewer than 10 wet days. Averages are NOAA’s 1991–2020 normals for the Trenton Mercer Co Ap station, not a forecast.
Around Princeton
See Princeton before you go
THINGS TO DO · YOUTUBE SHORT
Princeton University, NJ!
A local activity Short shared by Elizabeth Walk.
Watch on YouTube ↗
THINGS TO DO · YOUTUBE SHORT
Things to do in New Jersey | Explore Princeton
A local activity Short shared by Papali Dash.
Watch on YouTube ↗Questions
What is the best month to visit Princeton?
May, September, October: highs between 65°F and 85°F with the least rain.
What is the hottest month in Princeton?
July, averaging 86°F highs.
What is the coldest month in Princeton?
January, with average lows of 24°F.
What is the rainiest month in Princeton?
July, averaging 4.4 in of precipitation.
When are the big holidays in Princeton?
See the local guides: Halloween (October), Thanksgiving (November), Christmas lights (late November to December), New Year’s Eve.