July weather forecast
Trenton, NJ

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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 is Trenton's warmest month and sits at the height of the summer season. High daily average temperatures reach a toasty 85.1°F (29.5°C), the highest on record for the year. Coupled with relatively low cloud cover, the city enjoys ample sunshine. Leisure activities continue in full swing, benefiting from the extended daylight hours. Despite being the warmest month, July inherits the crown for Trenton's summer charm.

Temperature

Trenton registers the highest average temperatures during the month of July, with peaks of 85.1°F (29.5°C) and lows of 67.3°F (19.6°C).

Heat index

The heat index value during July is calculated to be a sweltering 95°F (35°C). Emphasize additional safety, risk of heat cramps and heat exhaustion is high. Continuous activity might result in heatstroke.
The heat index's values are generally associated with conditions in shade and light breezes. Direct exposure to sunlight could raise the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', evaluates the perceived heat by adding the effect of moisture in the air. Depending on the activity and the individual's heat perception, which may vary due to factors including wind, clothing, and metabolic variations, this effect remains subjective. When in direct sunlight, one should be cautious as it can raise the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for babies and toddlers. Young ones often underestimate the need for rest and rehydration. Thirst appears late in dehydration - hence, it is important to keep hydrated, particularly during prolonged physical activities.
When faced with excessive heat, the human body begins to perspire, utilizing the cooling benefits of sweat evaporation. Under high air temperature and high humidity (high heat index) conditions, the body's ability to perspire is compromised, increasing the sensation of heat. Overheating and dehydration threats arise when heat gain goes beyond what the body can comfortably shed.

Humidity

The average relative humidity in July in Trenton is 74%.

Rainfall

July is the month with the most rainfall. Rain falls for 18.5 days and accumulates 3.74" (95mm) of precipitation.

Snowfall

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

Daylight

In Trenton, New Jersey, the average length of the day in July is 14h and 42min.
On the first day of July, sunrise is at 5:33 am and sunset at 8:32 pm. On the last day of the month, sunrise is at 5:56 am and sunset at 8:14 pm EDT.

Sunshine

July has the most sunshine of the year in Trenton, New Jersey, with an average of 10.6h of sunshine.

UV index

The months with the highest UV index in Trenton are May through August, with an average maximum UV index of 6. A UV Index estimate of 6 to 7 represents a high health hazard from unprotected exposure to Sun's UV rays for the average person.
Note: In July, an average UV index of 6 transforms into the following instructions:
Persist with safeguards and heed sun safety doctrines. Keeping sunburn at bay is of prime importance. Avoid direct Sun exposure and stay in the shade between 10 a.m. and 4 p.m., a time when UV radiation is most intense, noting that not all shade structures offer full protection. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage.
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Frequently asked questions

What are the warmest months in Trenton?

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

How hot does it get in Trenton in July?

In Trenton, in July, the average high-temperature is 85.1°F (29.5°C), and the average low-temperature is 67.3°F (19.6°C). The average heat index (a.k.a. 'felt air temperature', 'feels like'), which takes the relative humidity and factors it into the air temperature reading, in July is calculated to be 95°F (35°C).

What is the average humidity in July in Trenton?

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

What is the wettest month in Trenton?

July is the month with the most rainfall in Trenton, New Jersey. Rain falls for 18.5 days and accumulates 3.74" (95mm) of precipitation.

How much does it rain in Trenton in July?

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

When it does not snow in Trenton?

In Trenton, snow does not fall in June through September.

How many hours of daylight does Trenton have in July?

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

When is the sunrise / sunset in July in Trenton?

On the first day of July, sunrise is at 5:33 am and sunset at 8:32 pm. On the last day of the month, sunrise is at 5:56 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 in Trenton, New Jersey.

How long on average sun shines in July in Trenton?

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

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

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

What is the UV index reading in July in Trenton?

In Trenton, the average daily maximum UV index in July is 6. A UV Index estimate of 6 to 7 represents a high health vulnerability from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
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 4min

The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 24min).

  • Average sunshine in July: 10h and 4min

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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Trenton, New Jersey, USA

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