July weather forecast and climate
Delaware, NJ

Weather in July

July, like June, in Delaware, New Jersey, is another warm summer month, with average temperature ranging between max 82.2°F (27.9°C) and min 61.2°F (16.2°C).

Temperature

With an average high-temperature of 82.2°F (27.9°C) and an average low-temperature of 61.2°F (16.2°C), July is the warmest month.

Heat index

The average heat index in July is estimated at a hot 88.5°F (31.4°C). Exhaustion is likely with prolonged exposure and activity. Sustaining activity may result in heat cramps.
Take into consideration that the heat index values are calculated for shade and light wind conditions. 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', 'apparent temperature', 'felt air temperature', or 'real feel', is an index that combines air temperature and relative humidity to determine the human-perceived temperature equivalent. Additional factors like activity, pregnancy, clothing, and wind affect individual temperature impact. Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Young children are generally more endangered than adults, as they usually less sweat. And also, due to larger skin surface relative to their small bodies and higher heat production as a result of their activity.

Humidity

In Delaware, the average relative humidity is 77%.

Rainfall

July is the month with the most rainfall. Rain falls for 17.4 days and accumulates 3.11" (79mm) of precipitation.

Snowfall

June through September are months without snowfall.

Daylight

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

Sunshine

With an average of 10.2h of sunshine, July has the most sunshine of the year.

UV index

The average daily maximum UV index in July is 5. A UV Index reading of 3 to 5 represents a medium health hazard from the exposure to the Sun's UV rays for the average person.
Note: In July, the average maximum UV index of 5 translate into the following recommendations:
Take precautions - Protection against sun damage is advised. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. 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 Delaware?

With an average high-temperature of 82.2°F (27.9°C) and an average low-temperature of 61.2°F (16.2°C), July is the warmest month in Delaware, New Jersey.

What is the temperature in July in Delaware?

In Delaware, in July, the average high-temperature is 82.2°F (27.9°C), and the average low-temperature is 61.2°F (16.2°C). In July, the average heat index (a.k.a. 'felt air temperature', 'real feel'), that combines air temperature and relative humidity, is evaluated at 88.5°F (31.4°C).

What is the average humidity in July in Delaware?

In July, the average relative humidity in Delaware is 77%.

How much does it rain in Delaware in July?

In Delaware, New Jersey, in July, it is raining for 17.4 days, with typically 3.11" (79mm) of accumulated precipitation.

What is the wettest month in Delaware?

The month with the most rainfall in Delaware, New Jersey, is July when the rain falls for 17.4 days and typically aggregates up to 3.11" (79mm) of precipitation.

When it does not snow in Delaware?

In Delaware snow does not fall in June through September.

How many hours of daylight does Delaware have in July?

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

What month has the most sunshine in Delaware?

With an average of 10.2h of sunshine, July has the most sunshine of the year in Delaware, New Jersey.

How long on average sun shines in July in Delaware?

In Delaware, New Jersey, the average sunshine in July is 10.2h.

What is the UV index intensity in July in Delaware?

The average daily maximum UV index in July in Delaware, New Jersey, is 5. A UV Index reading of 3 to 5 represents a medium health risk from unprotected exposure to the UV radiation.

Average temperature in July
Delaware, NJ

Average temperature in July - Delaware, NJ
  • Average high temperature in July: 82.2°F

The warmest month (with the highest average high temperature) is July (82.2°F).
The month with the lowest average high temperature is January (32.5°F).

  • Average low temperature in July: 61.2°F

The month with the highest average low temperature is July (61.2°F).
The coldest month (with the lowest average low temperature) is January (19.8°F).

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Average pressure in July
Delaware, NJ

Average pressure in July - Delaware, NJ
  • Average pressure in July: 29.96"

The month with the highest atmospheric pressure is November (30.11").
The month with the lowest atmospheric pressure is June (29.93").

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Average wind speed in July
Delaware, NJ

Average wind speed in July - Delaware, NJ
  • Average wind speed in July: 5mph

The windiest months (with the highest average wind speed) are January, February and March (7.8mph).
The calmest month (with the lowest average wind speed) is August (4.9mph).

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Average humidity in July
Delaware, NJ

Average humidity in July - Delaware, NJ
  • Average humidity in July: 77%

Months with the highest relative humidity are February, October and December (82%).
The month with the lowest relative humidity is April (76%).

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Average rainfall in July
Delaware, NJ

Average rainfall in July - Delaware, NJ
  • Average rainfall in July: 3.11"

The wettest month (with the highest rainfall) is July (3.11").
The driest month (with the least rainfall) is September (1.81").

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Average rainfall days in July
Delaware, NJ

Average rainfall days in July - Delaware, NJ
  • Average rainfall days in July: 17.4 days

The month with the highest number of rainy days is July (17.4 days).
The month with the least rainy days is February (9.5 days).

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Average snowfall in July
Delaware, NJ

Average snowfall in July - Delaware, NJ
  • Average snowfall in July: 0"

The month with the highest snowfall is February (5.67").
Months with the least snowfall are June, July, August and September (0").

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Average snowfall days in July
Delaware, NJ

Average snowfall days in July - Delaware, NJ
  • Average snowfall days in July: 0 days

The month with the highest number of snowfall days is January (11.4 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
Delaware, NJ

Average daylight in July / Average sunshine in July - Delaware, NJ
  • 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: 9.3h).

  • Average sunshine in July: 10.2h

The month with the most sunshine is July (Average sunshine: 10.2h).
The month with the least sunshine is February (Average sunshine: 4.3h).

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Average sunshine days in July
Delaware, NJ

Average sunshine days in July - Delaware, NJ
  • Average sunshine days in July: 12.1 days

The month with the most sunshine days is November (16.4 days).
The month with the least sunshine days is June (11.1 days).

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Average UV index in July
Delaware, NJ

Average UV index in July - Delaware, NJ
  • Average UV index in July: 5

The month with the highest UV index is June (UV index 6).
The month with the lowest UV index is December (UV index 1).

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Average cloud cover in July
Delaware, NJ

Average cloud cover in July - Delaware, NJ
  • Average cloud cover in July: 35

The month with the most cloud cover is February (Cloud cover 52).
The month with the least cloud cover is July (Cloud cover 35).

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Average visibility in July
Delaware, NJ

Average visibility in July - Delaware, NJ
  • Average visibility in July: 5mi

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

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