July weather forecast
Trenton, NJ

A full aerial view of Trenton, New Jersey, with the George Washington statue
A full aerial view of Trenton, New Jersey, with the George Washington statue

Weather in July

July, the same as June, is a moderately hot summer month in Trenton, New Jersey, with an average temperature fluctuating between 67.3°F (19.6°C) and 85.1°F (29.5°C).

Temperature

July is the warmest month, with an average high-temperature of 85.1°F (29.5°C) and an average low-temperature of 67.3°F (19.6°C).

Heat index

In July, the average heat index is appraised at a very hot 95°F (35°C). Take extra precautions, as heat cramps and heat exhaustion are possible. Sustained activity may result in heatstroke.
Note that heat index values are valued for light wind and location in the shade. With 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', 'real feel', 'felt air temperature', or 'apparent temperature', is a measure that combines air temperature and relative humidity into a single value that indicates how hot the weather feels. 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). 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 especially crucial for babies and toddlers. 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.
The human body normally cools itself by perspiration. Excessive warmth is eliminated from the body by evaporation of sweat. A higher relative humidity affects normal body cooling by reducing the evaporation rate, subsequently lowering the rate at which the body cools and increasing the perception of heat. When heat gain exceeds the level the body can remove, body temperature begins to rise, and heat-related illnesses and disorders may develop.

Humidity

In July, the average relative humidity is 74%.

Rainfall

The month with the most rainfall is July, when the rain falls for 18.5 days and typically aggregates up to 3.74" (95mm) of precipitation.

Snowfall

June through September are months without snowfall in Trenton, New Jersey.

Daylight

In Trenton, the average length of the day in July is 14h and 42min.
On the first day of the month, sunrise is at 5:33 am and sunset at 8:32 pm. On the last day of July, sunrise is at 5:55 am and sunset at 8:14 pm EDT.

Sunshine

The month with the most sunshine in Trenton is July, with an average of 10.6h of sunshine.

UV index

May through August, with an average maximum UV index of 6, are months with the highest UV index. A UV Index value of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV radiation for the ordinary person.
Note: The average daily UV index of 6 in July transform into the following instructions:
Take precautions and adopt sun safety practices. Protection against sunburn is obliged. 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.
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FAQ

What is the warmest month in Trenton?

With an average high-temperature of 85.1°F (29.5°C) and an average low-temperature of 67.3°F (19.6°C), July is the warmest month in Trenton, New Jersey.

What is the temperature in July in Trenton?

The average high-temperature, in July, is 85.1°F (29.5°C), while the average low-temperature is 67.3°F (19.6°C). The average heat index (a.k.a. 'apparent temperature', 'real feel'), which represents the influence of relative humidity on air temperature, in July is appraised at 95°F (35°C).

What is the average humidity in July in Trenton?

In Trenton, the average relative humidity in July is 74%.

What is the rainiest month in Trenton?

The month with the most rainfall in Trenton is July, when the rain falls for 18.5 days and typically aggregates up to 3.74" (95mm) of precipitation.

How many days does it rain in July in Trenton?

In Trenton, New Jersey, in July, during 18.5 rainfall days, 3.74" (95mm) of precipitation is typically accumulated.

When it does not snow in Trenton?

June through September are months without snowfall.

How many hours of daylight does Trenton have in July?

The average day length in July in Trenton, New Jersey, is 14h and 42min.

When are sunrise and sunset in July in Trenton?

On the first day of July in Trenton, sunrise is at 5:33 am and sunset at 8:32 pm. On the last day of the month, sunrise is at 5:55 am and sunset at 8:14 pm EDT.

What month has the most sunshine in Trenton?

With an average of 10.6h of sunshine, July has the most sunshine of the year.

How many hours of sunshine does Trenton have in July?

In Trenton, New Jersey, the average sunshine duration in July is 10.6h.

What is the month with the highest UV index in Trenton?

May through August, with an average maximum UV index of 6, are months with the highest UV index in Trenton.

What is the UV index reading in July in Trenton?

In July, the average daily maximum UV index in Trenton, New Jersey, is 6. A UV Index reading of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in July
Trenton, NJ

Average temperature in July - Trenton, NJ
  • Average high temperature in July: 85.1°F

The warmest month (with the highest average high temperature) is July (85.1°F).
The month with the lowest average high temperature is January (36.9°F).

  • Average low temperature in July: 67.3°F

The month with the highest average low temperature is July (67.3°F).
The coldest month (with the lowest average low temperature) is January (24.8°F).

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Average pressure in July
Trenton, NJ

Average pressure in July - Trenton, NJ
  • Average pressure in July: 29.96"Hg

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

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Average wind speed in July
Trenton, NJ

Average wind speed in July - Trenton, NJ
  • Average wind speed in July: 5.5mph

The windiest month (with the highest average wind speed) is March (8.6mph).
The calmest month (with the lowest average wind speed) is August (5.4mph).

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Average humidity in July
Trenton, NJ

Average humidity in July - Trenton, NJ
  • Average humidity in July: 74%

The months with the highest relative humidity are February and October (78%).
The month with the lowest relative humidity is April (72%).

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Average rainfall in July
Trenton, NJ

Average rainfall in July - Trenton, NJ
  • Average rainfall in July: 3.74"

The wettest month (with the highest rainfall) is July (3.74").
The driest month (with the least rainfall) is January (1.85").

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Average rainfall days in July
Trenton, NJ

Average rainfall days in July - Trenton, NJ
  • Average rainfall days in July: 18.5 days

The month with the highest number of rainy days is July (18.5 days).
The month with the least rainy days is January (7.9 days).

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Average snowfall in July
Trenton, NJ

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

The month with the highest snowfall is March (2.72").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in July
Trenton, NJ

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

The month with the highest number of snowfall days is January (4.8 days).
The 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
Trenton, NJ

Average daylight in July / Average sunshine in July - Trenton, NJ
  • Average daylight in July: 14h and 42min

The month with the longest days is June (Average daylight: 14h and 59min).
The month with the shortest days is December (Average daylight: 9h and 22min).

  • Average sunshine in July: 10h and 36min

The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is February (Average sunshine: 4h and 48min).

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Average sunshine days in July
Trenton, NJ

Average sunshine days in July - Trenton, NJ
  • Average sunshine days in July: 9.3 days

The month with the most sunshine days is November (20.6 days).
The month with the least sunshine days is July (9.3 days).

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Average UV index in July
Trenton, NJ

Average UV index in July - Trenton, NJ
  • Average UV index in July: 6

The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).

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Average cloud cover in July
Trenton, NJ

Average cloud cover in July - Trenton, NJ
  • Average cloud cover in July: 32

The months with the most cloud cover are February, March and December (Cloud cover 47).
The months with the least cloud cover are July and August (Cloud cover 32).

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Average visibility in July
Trenton, NJ

Average visibility in July - Trenton, NJ
  • Average visibility in July: 6mi

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

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