Yosemite National Park is definitely worth a visit
Vast forests, blue lakes, towering sequoias, and majestic waterfalls hint at the beauty of Yosemite National Park—a true natural masterpiece.
Princeton Weather in September
With daytime temperatures of 26°C (79°F) and nighttime lows of 13°C (55°F), September in Princeton brings high temperatures during the day. Do keep in mind that quite a bit of rainfall is typical. Around 88 mm (3.5 in) falls on average.
Rainfall in Princeton in September
Records from the past 30 years suggest around 8 days of rain, with 88 mm (3.5 in) average for the month. Rainfall intensity is on the higher side this month. Expect more substantial showers rather than light, passing rain.
Temperature in Princeton in September
September is a excellent month in Princeton, with 26°C (79°F) during the day and 13°C (55°F) at night. Overall, the month follows a fairly predictable daily temperature pattern. At 13°C (55°F) overnight, it can feel quite a bit cooler after dark. Worth packing something warmer for evenings, but the cooler temperatures are ideal for sleeping.
Sunshine in Princeton in September
The city usually sees around 215 hours of sunlight, indicating many sunny days , a great month for sightseeing.Our weather planner can help you find worldwide destinations with pleasant weather during this period. September typically offers the best weather for Princeton.
Princeton Temperature in September
Min Temperature
13°C (55°F)
Max Temperature
26°C (79°F)
Chance of Rain
27%
Precipitation
88 mm (3.5 in)
Rainy days
8 days
Sunshine
215 hours *
Percentage Sunshine
57% *
* Data from: Trenton, the United States of America (16 KM, 10 Miles).
Princeton Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Princeton - and find the best time to visit.
Best Places in the United States of America in September
Find out more about the weather in the United States of America and which places have the best travel conditions in this month. See all of the United States of America in September →
perfect weather
pleasant
tolerable
unpleasant
poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).
What to Wear in Princeton in September
Warm temperatures in September make for comfortable sightseeing weather. Pack breathable fabrics like cotton shirts, knee-length shorts or skirts, and comfortable walking shoes. A thin long sleeve for indoor spaces is handy. Prepare for significant rainfall with proper waterproof clothing and shoes. And with plenty of sunshine hours, don’t forget sunglasses, sunscreen, and maybe a sun hat.
What To Do in Princeton in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
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Swimming9/10 -
Cycling7/10 -
Walking7/10 -
Camping8/10 -
Outdoor sports7/10
Princeton 3-Day Forecast
More climate data for Princeton
See the full Princeton climate overview or explore weather in the United States of America.
Popular in September
Where to go in September - average daytime high across popular destinations.
Bucket list
Need travel inspiration? Check out our bucket list articles and be inspired.
Yosemite National Park is definitely worth a visit
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