New Haven
Connecticut, USA
Long-term weather forecast
Long-term weather forecast

July weather forecast and climate
New Haven, CT

A scenic shot from above of the greeny New Haven Green in Connecticut, with the rest of the city and a far away dramatic landscape
A scenic shot from above of the greeny New Haven Green in Connecticut, with the rest of the city and a far away dramatic landscape
July, like June, in New Haven, Connecticut, is another warm summer month, with temperature in the range of an average low of 65.5°F (18.6°C) and an average high of 82.6°F (28.1°C).

Temperature

July is the warmest month, with an average high-temperature of 82.6°F (28.1°C) and an average low-temperature of 65.5°F (18.6°C).

Rainfall

In July, in New Haven, the rain falls for 9 days. Throughout July, 4" (101.9mm) of precipitation is accumulated. Throughout the year, in New Haven, there are 119 rainfall days, and 47.1" (1196.6mm) of precipitation is accumulated.

Ocean temperature

In New Haven, Connecticut, the average water temperature is 71.1°F (21.7°C). For most, swimming in 71.1°F (21.7°C) is not an enjoyable activity. Furthermore, controlling your breathing becomes progressively more difficult as the water temperature decreases from 69.8°F (21°C) to 59°F (15°C).

Daylight

In New Haven, the average length of the day is 14.8h.

Sunshine

Months with the most sunshine are May through July, with an average of 9h of sunshine.

UV index

Months with the highest UV index are June through August, with an average maximum UV index of 8. A UV Index value of 8 to 10 symbolizes a very high threat to health from unprotected exposure to the Sun's UV rays for the average person.
In July, the average maximum UV index of 8 translate into the following recommendations:
Take extra precautions. Fair-skinned individuals may get burned in less than 10 minutes. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Beware! The reflection of water and sand dramatically increases exposure to the UV rays.

What is the warmest month in New Haven?

With an average high-temperature of 82.6°F (28.1°C) and an average low-temperature of 65.5°F (18.6°C), July is the warmest month in New Haven.

What is the temperature in July in New Haven?

In New Haven, Connecticut, in July, the average high-temperature is 82.6°F (28.1°C), and the average low-temperature is 65.5°F (18.6°C).

How many days does it rain in July in New Haven?

In New Haven, Connecticut, in July, it is raining for 9 days, with typically 4" (101.9mm) of accumulated precipitation.

What is the ocean temperature in July in New Haven?

In July, the average ocean temperature in New Haven is 71.1°F (21.7°C). For most, swimming in 71.1°F (21.7°C) is not an enjoyable activity. Furthermore, controlling your breathing becomes progressively more difficult as the water temperature decreases from 69.8°F (21°C) to 59°F (15°C).

How many hours of daylight does New Haven have in July?

In July, the average length of the day in New Haven is 14.8h.

What is the month with the most sunshine in New Haven?

May through July, with an average of 9h of sunshine, are months with the most sunshine in New Haven, Connecticut.

How many hours of sunshine does New Haven have in July?

In July, the average sunshine in New Haven, Connecticut, is 9h.

What is the month with the highest UV index in New Haven?

Months with the highest UV index are June through August, with an average maximum UV index of 8.

How high is the UV index in July in New Haven?

The average daily maximum UV index in July in New Haven is 8. A UV Index reading of 8 to 10 represents a very high health vulnerability from unprotected exposure to the UV radiation.
Average temperature in July - New Haven, CT
  • Average high temperature in July: 82.5°F

The warmest month (with the highest average high temperature) is July (82.5°F).
The month with the lowest average high temperature is January (37.8°F).

  • Average low temperature in July: 65.5°F

The month with the highest average low temperature is July (65.5°F).
The coldest month (with the lowest average low temperature) is January (22.2°F).

Average rainfall in July - New Haven, CT
  • Average rainfall in July: 4"

Wettest months (with the highest rainfall) are April and September (4.4").
The driest month (with the lowest rainfall) is February (2.9").

Average rainfall days in July - New Haven, CT
  • Average rainfall days in July: 9 days

The month with the highest number of rainy days is December (12 days).
The month with the lowest number of rainy days is October (7 days).

Average sea temperature in July - New Haven, CT
  • Average sea temperature in July: 71°F

The best month for swimming (with the highest average sea temperature) is August (73°F).
The coldest month (with the lowest average sea temperature) is February (38.5°F).

Average daylight in July / Average sunshine in July - New Haven, CT
  • Average daylight in July: 14.8h

The month with the longest days is June (Average daylight: 15.1h).
The month with shortest days is December (Average daylight: 9.2h).

  • Average sunshine in July: 9h

Months with most sunshine are May, June and July (Average sunshine: 9h).
Months with least sunshine are November and December (Average sunshine: 5).

Average UV index in July - New Haven, CT
  • Average UV index in July: 8

Months with the highest UV index are June, July and August (UV index 8).
The month with the lowest UV index is December (UV index 1).