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.
New Haven Weather in September
New Haven in September sees high daytime temperatures of 25°C (77°F) and nighttime lows of 14°C (57°F). Rainfall is fairly high this month at around 96 mm (3.8 in), so pack a rain jacket to stay dry.
Rainfall in New Haven in September
Based on our climate data of the past 30 years, about 10 days of rain are anticipated, with 96 mm (3.8 in) on average. Individual showers can be quite heavy this month. A proper umbrella or rain jacket is worth having.
Temperature in New Haven in September
September tends to be one of the excellent months in New Haven, with 25°C (77°F) in the afternoon and 14°C (57°F) overnight. This gives the month a fairly typical daily rhythm, with warmer afternoons and more comfortable nights. Nights cool down to 14°C (57°F), so a light jacket or extra layer is useful once the sun goes down. On the plus side, the cooler nights make for comfortable sleeping conditions.
Sunshine in New Haven in September
There are approximately 223 hours of sunshine this month, resulting in mostly clear days.Our weather planner can help you find worldwide destinations with pleasant weather during this period. July and September typically offer the best weather for New Haven.
New Haven Temperature in September
Min Temperature
14°C (57°F)
Max Temperature
25°C (77°F)
Chance of Rain
33%
Precipitation
96 mm (3.8 in)
Rainy days
10 days
Humidity
72% *
Sunshine
223 hours *
Percentage Sunshine
60% *
* Data from: Hartford, the United States of America (54 KM, 33 Miles).
New Haven Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in New Haven - 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 New Haven 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. Expect heavy rainfall, so bring good rain protection and waterproof bags. And with plenty of sunshine hours, don’t forget sunglasses, sunscreen, and maybe a sun hat.
What To Do in New Haven in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
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Swimming9/10 -
Cycling9/10 -
Walking9/10 -
Barbeque8/10 -
Camping8/10 -
Outdoor sports9/10
New Haven 3-Day Forecast
More climate data for New Haven
Temperature Rainfall Sunshine Humidity
See the full New Haven 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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