Princeton
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Princeton Weather in September

September in Princeton brings high temperatures, with highs of 25°C (77°F) and nights dropping to 13°C (55°F). Rainfall is on the higher side this month, averaging around 67 mm (2.6 in), so keep a rain jacket handy.

Rainfall in Princeton in September

Analyzing past climate data, one can expect approximately 10 days of rain, averaging 67 mm (2.6 in). A fairly balanced picture this month, some wet days but nothing too extreme in terms of intensity.

Temperature in Princeton in September

If you're visiting Princeton in September, expect excellent temperatures with highs of 25°C (77°F) and overnight lows of 13°C (55°F). Overall, the month follows a fairly predictable daily temperature pattern. With lows of 13°C (55°F), nights are cool. If you're out after dark, an extra layer will keep you comfortable. The cooler air at night is also great for getting a good rest.

If you favor pleasant temperatures and minimal rainfall, September is one of the best months to visit Princeton.

Princeton Temperature in September

Min Temperature
13°C (55°F)
Max Temperature
25°C (77°F)
Chance of Rain
33%
Precipitation
67 mm (2.6 in)
Rainy days
10 days

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

Comfortable temperatures call for an easy wardrobe in September. Pack summer basics like t-shirts and shorts, but include a light jacket for cooler moments. A pair of comfortable walking shoes is essential. Wet weather is likely, so pack waterproof gear for multiple rainy days.

What To Do in Princeton in September

We rated the following activities from 1 (least suitable) to 10 (best) to do.

  • Cycling
    10/10
  • Walking
    10/10
  • Camping
    8/10
  • Outdoor sports
    10/10

Princeton 3-Day Forecast

More climate data for Princeton

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.