July weather forecast
Morristown, NJ

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Downtown Morristown, New Jersey, in a perfect aerial shot of the rest of the city, the green tree cover, and the stunning colorful clear sky above
Downtown Morristown, New Jersey, in a perfect aerial shot of the rest of the city, the green tree cover, and the stunning colorful clear sky above

Weather in July

July is the apex of summer, featuring the hottest temperatures and longest daylight hours. Whilst temperature soars to an average high of 83.7°F (28.7°C), intense sunshine keeps the city sunny and vibrant. Residents prepare with light cotton clothing, sunglasses, and sunscreen to bear the scorching sunny days. Light breezes interrupt the high heat, providing some degree of coolness. Rainfall occasionally interrupts the blue skies, offering a brief respite from the unrelenting sun.

Temperature

In Morristown, July is identified by the highest average temperatures, reaching a peak of 83.7°F (28.7°C) and a low of 65.7°F (18.7°C).

Heat index

In July, the heat index is computed to be a hot 91.4°F (33°C). Heightened precautions are necessary, heat cramps and heat exhaustion are potential risks. Continuous activity could lead to heatstroke.
Take note of the fact that heat index values are based on shaded circumstances with light airflows. The heat index could experience an increase of 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'felt air temperature' or 'real feel', integrates the air's temperature and its humidity to showcase the felt temperature by people. Factors including metabolic differences, physical activity, and clothing are additional elements that influence the individual's temperature experience. Always consider that direct sunlight exposure might heighten the heat's effects, pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values remain especially vital for babies and toddlers. Children often fail to recognize the requirement to rest and rehydrate. Thirst, being a late symptom of dehydration, underlines the importance of maintaining hydration, especially during ongoing physical activities.

Humidity

The average relative humidity in July is 75%.

Rainfall

July is the month with the most rainfall. Rain falls for 17.4 days and accumulates 3.27" (83mm) of precipitation.

Snowfall

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

Daylight

In Morristown, the average length of the day in July is 14h and 46min.
On the first day of the month, sunrise is at 5:30 am and sunset at 8:33 pm. On the last day of July, in Morristown, sunrise is at 5:54 am and sunset at 8:14 pm EDT.

Sunshine

July has the most sunshine of the year in Morristown, New Jersey, with an average of 10.3h of sunshine.

UV index

The months with the highest UV index are June through August, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high health hazard from exposure to the Sun's UV rays for the average person.
Note: The daily high UV index of 6 in July translates into this advice:
Steer clear of overexposure. Fair-skinned individuals can be scorched in less than 20 minutes. Between 10 a.m. and 4 p.m., the Sun's UV radiation is at its peak. Limit your exposure to direct sunlight during these hours. Safeguard your eyes, ears, and face from sun rays with the aid of a wide-brim hat.
Updated: Feb 13, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What part of the year is the hottest in Morristown?

July, known for its average high temperature of 83.7°F (28.7°C) and an average low temperature of 65.7°F (18.7°C), is the warmest month in Morristown, New Jersey.

Is it hot in Morristown during July?

During July, Morristown experiences an average high-temperature of 83.7°F (28.7°C) and a low-temperature of 65.7°F (18.7°C). The average heat index (a.k.a. 'apparent temperature', 'real feel'), which calculates the temperature value influenced by the moisture in the air, in July is computed to be 91.4°F (33°C).

What is the average humidity in July in Morristown?

In Morristown, the average relative humidity in July is 75%.

What is the wettest month in Morristown?

The month with the most rainfall is July, when the rain falls for 17.4 days and typically aggregates up to 3.27" (83mm) of precipitation.

How much does it rain in Morristown in July?

In July, in Morristown, the rain falls for 17.4 days. Throughout July, 3.27" (83mm) of precipitation is accumulated.

When it does not snow in Morristown?

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

How many hours of daylight does Morristown have in July?

In Morristown, the average day length in July is 14h and 46min.

What time are sunrise and sunset in July in Morristown?

On the first day of July in Morristown, sunrise is at 5:30 am and sunset at 8:33 pm. On the last day of the month, sunrise is at 5:54 am and sunset at 8:14 pm EDT.

What month has the most sunshine in Morristown?

The month with the most sunshine is July, with an average of 10.3h of sunshine.

How many hours of sunshine does Morristown have in July?

In July, the average sunshine duration in Morristown is 10.3h.

When is the highest UV index in Morristown?

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

What is the UV index reading in July in Morristown?

In Morristown, New Jersey, the average daily maximum UV index in July is 6. A UV Index value of 6 to 7 symbolizes a high health vulnerability from unprotected exposure to UV radiation.
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
Morristown, NJ

Average temperature in July - Morristown, NJ
  • Average high temperature in July: 83.7°F

The warmest month (with the highest average high temperature) is July (83.7°F).
The month with the lowest average high temperature is January (35.1°F).

  • Average low temperature in July: 65.7°F

The month with the highest average low temperature is July (65.7°F).
The coldest month (with the lowest average low temperature) is January (22.5°F).

Average pressure in July
Morristown, NJ

Average pressure in July - Morristown, 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).

Average wind speed in July
Morristown, NJ

Average wind speed in July - Morristown, NJ
  • Average wind speed in July: 5.4mph

The windiest month (with the highest average wind speed) is March (8.5mph).
The calmest month (with the lowest average wind speed) is August (5.3mph).

Average humidity in July
Morristown, NJ

Average humidity in July - Morristown, NJ
  • Average humidity in July: 75%

The months with the highest relative humidity are February and December (80%).
The months with the lowest relative humidity are April and August (74%).

Average rainfall in July
Morristown, NJ

Average rainfall in July - Morristown, NJ
  • Average rainfall in July: 3.27"

The wettest month (with the highest rainfall) is July (3.27").
The driest month (with the least rainfall) is September (1.69").

Average rainfall days in July
Morristown, NJ

Average rainfall days in July - Morristown, 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 January (8.8 days).

Average snowfall in July
Morristown, NJ

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

The month with the highest snowfall is March (3.5").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in July
Morristown, NJ

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

The month with the highest number of snowfall days is January (7.6 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in July /
Average sunshine in July
Morristown, NJ

Average daylight in July / Average sunshine in July - Morristown, NJ
  • Average daylight in July: 14h and 5min

The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).

  • Average sunshine in July: 10h and 2min

The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is February (Average sunshine: 4h and 36min).

Average sunshine days in July
Morristown, NJ

Average sunshine days in July - Morristown, NJ
  • Average sunshine days in July: 11.9 days

The month with the most sunshine days is November (18.3 days).
The month with the least sunshine days is June (10.5 days).

Average UV index in July
Morristown, NJ

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

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

Average cloud cover in July
Morristown, NJ

Average cloud cover in July - Morristown, NJ
  • Average cloud cover in July: 34

The months with the most cloud cover are February and March (Cloud cover 49).
The months with the least cloud cover are July and August (Cloud cover 34).

Average visibility in July
Morristown, NJ

Average visibility in July - Morristown, 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).

Morristown, New Jersey, USA

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