July weather forecast and climate
Durham, CT

Weather in July

July, like June, in Durham, Connecticut, is another warm summer month, with average temperature varying between 64°F (17.8°C) and 82.8°F (28.2°C).

Temperature

July is the warmest month, with an average high-temperature of 82.8°F (28.2°C) and an average low-temperature of 64°F (17.8°C).

Heat index

In July, the average heat index is evaluated at a hot 89.6°F (32°C). Constant exposure and activity lead to possible fatigue. Prolonged exercise may result in heat cramps.
Note that heat index values are valued for light wind and location in the shade. With the exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like', 'felt air temperature', 'apparent temperature', or 'real feel', is an index that combines air temperature and relative humidity to determine the human-perceived temperature equivalent. This effect is subjective, depending on the activity and individual's heat perception influenced by various reasons (differences in body mass, height, and shape, wind, pregnancy). Be aware that direct exposure to sunlight increases heat impact, and may raise the heat index additionally, by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it is vital to remain hydrated, particularly during prolonged physical activities.

Humidity

The average relative humidity in Durham is 76%.

Rainfall

In Durham, Connecticut, during 17.3 rainfall days, 3.19" (81mm) of precipitation is typically accumulated. Throughout the year, there are 160 rainfall days, and 34.57" (878mm) of precipitation is accumulated.

Snowfall

June through October are months without snowfall in Durham.

Daylight

The average length of the day in Durham is 14.8h.

Sunshine

July and August, with an average of 10.2h of sunshine, are months with the most sunshine in Durham.

UV index

Months with the highest UV index in Durham are June through August, with an average maximum UV index of 6. A UV Index estimate of 6 to 7 represents a high health risk from unsafe exposure to the UV radiation for ordinary individuals.
Note: The average daily UV index of 6 transform into the following instructions:
Take precautions against overexposure. Protection against sun damage is needed. 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. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun.
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FAQ

What is the warmest month in Durham?

July is the warmest month, with an average high-temperature of 82.8°F (28.2°C) and an average low-temperature of 64°F (17.8°C).

What is the temperature in July in Durham?

The average high-temperature, in July, in Durham, Connecticut, is 82.8°F (28.2°C), while the average low-temperature is 64°F (17.8°C). In July, the average heat index (a.k.a. 'real feel', 'feels like'), that represents influence of the relative humidity to air temperaure, is calculated to 89.6°F (32°C).

What is the average humidity in July in Durham?

In Durham, Connecticut, the average relative humidity in July is 76%.

How many days does it rain in July in Durham?

In Durham, Connecticut, in July, it is raining for 17.3 days, with typically 3.19" (81mm) of accumulated precipitation.

When it does not snow in Durham?

June through October are months without snowfall in Durham.

What is the average length of the day in July in Durham?

The average length of the day in July in Durham is 14.8h.

What is the month with the most sunshine in Durham?

July and August, with an average of 10.2h of sunshine, are months with the most sunshine.

How many hours of sunshine does Durham have in July?

In July, the average sunshine in Durham, Connecticut, is 10.2h.

What are the months with the highest UV index in Durham?

Months with the highest UV index in Durham, Connecticut, are June through August, with an average maximum UV index of 6.

How high is the UV index in July in Durham?

In Durham, the average daily maximum UV index in July is 6. A UV Index value of 6 to 7 symbolizes a high health vulnerability from unsafe exposure to the Sun's UV rays.

Average temperature in July
Durham, CT

Average temperature in July - Durham, CT
  • Average high temperature in July: 82.8°F

The warmest month (with the highest average high temperature) is July (82.8°F).
The month with the lowest average high temperature is January (34°F).

  • Average low temperature in July: 64°F

The month with the highest average low temperature is July (64°F).
The coldest month (with the lowest average low temperature) is January (22.3°F).

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Average pressure in July
Durham, CT

Average pressure in July - Durham, CT
  • Average pressure in July: 29.95"

The month with the highest atmospheric pressure is November (30.09").
The month with the lowest atmospheric pressure is June (29.93").

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Average wind speed in July
Durham, CT

Average wind speed in July - Durham, CT
  • Average wind speed in July: 5.5mph

The windiest month (with the highest average wind speed) is January (8.4mph).
The calmest month (with the lowest average wind speed) is August (5.4mph).

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Average humidity in July
Durham, CT

Average humidity in July - Durham, CT
  • Average humidity in July: 76%

The month with the highest relative humidity is February (78%).
The month with the lowest relative humidity is April (71%).

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Average rainfall in July
Durham, CT

Average rainfall in July - Durham, CT
  • Average rainfall in July: 3.19"

The wettest month (with the highest rainfall) is December (3.74").
The driest month (with the least rainfall) is September (1.97").

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Average rainfall days in July
Durham, CT

Average rainfall days in July - Durham, CT
  • Average rainfall days in July: 17.3 days

The month with the highest number of rainy days is July (17.3 days).
The month with the least rainy days is January (8.3 days).

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Average snowfall in July
Durham, CT

Average snowfall in July - Durham, CT
  • Average snowfall in July: 0"

The month with the highest snowfall is March (4.33").
Months with the least snowfall are June, July, August, September and October (0").

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Average snowfall days in July
Durham, CT

Average snowfall days in July - Durham, CT
  • Average snowfall days in July: 0 days

The month with the highest number of snowfall days is February (8.5 days).
Months with the least snowfall days are June, July, August and September (0 days).

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Average daylight in July /
Average sunshine in July
Durham, CT

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

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

  • Average sunshine in July: 10.2h

Months with the most sunshine are July and August (Average sunshine: 10.2h).
The month with the least sunshine is February (Average sunshine: 4.6h).

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Average sunshine days in July
Durham, CT

Average sunshine days in July - Durham, CT
  • Average sunshine days in July: 12.2 days

The month with the most sunshine days is November (17.4 days).
The month with the least sunshine days is June (11.5 days).

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Average UV index in July
Durham, CT

Average UV index in July - Durham, CT
  • Average UV index in July: 6

Months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is December (UV index 1).

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Average cloud cover in July
Durham, CT

Average cloud cover in July - Durham, CT
  • Average cloud cover in July: 36

The month with the most cloud cover is February (Cloud cover 51).
The month with the least cloud cover is August (Cloud cover 35).

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Average visibility in July
Durham, CT

Average visibility in July - Durham, CT
  • Average visibility in July: 5mi

Months with the highest visibility are January, March, April, August, October, November and December (6mi).
Months with the lowest visibility are February, May, June, July and September (5mi).

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