July weather forecast and climate
Summit, NJ

July, like June, in Summit, New Jersey, is a moderately hot summer month, with average temperature fluctuating between 65.7°F (18.7°C) and 83.7°F (28.7°C).

Temperature

The warmest month is July, with an average high-temperature of 83.7°F (28.7°C) and an average low-temperature of 65.7°F (18.7°C).

Heat index

In July, the average heat index is estimated at a hot 91.4°F (33°C). Take extra precautions, as heat cramps and heat exhaustion are possible. Sustained activity may result in heatstroke.
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 'real feel', 'felt air temperature', 'feels like', or 'apparent temperature', is calculated by taking the relative humidity value for a specific location and factoring it into the air temperature reading. This effect is individual, with diverse people perceiving weather differently for numerous reasons (clothing, pregnancy, wind), and activity. 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 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 July, the average relative humidity in Summit, New Jersey, is 75%.

Rainfall

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

Snowfall

June through September are months without snowfall in Summit.

Daylight

In Summit, the average length of the day is 14.7h.

Sunshine

July has the most sunshine of the year in Summit, with an average of 10.3h of sunshine.

UV index

June through August, with an average maximum UV index of 6, are months with the highest UV index in Summit. A UV Index of 6 to 7 symbolizes a high threat to health from the exposure to the Sun's UV rays for the ordinary person.
Note: In July, the average maximum UV index of 6 translate into the following recommendations:
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. 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.

What is the warmest month in Summit?

July is the warmest month in Summit, with an average high-temperature of 83.7°F (28.7°C) and an average low-temperature of 65.7°F (18.7°C).

What is the temperature in July in Summit?

In July, in Summit, the average high-temperature is 83.7°F (28.7°C), and the average low-temperature is 65.7°F (18.7°C). In July, the average heat index (a.k.a. 'apparent temperature', 'feels like'), that combines relative humidity and air temperature, is evaluated at 91.4°F (33°C).

What is the average humidity in July in Summit?

In July, the average relative humidity is 75%.

How many days does it rain in July in Summit?

In Summit, in July, it is raining for 17.4 days, with typically 3.27" (83mm) of accumulated precipitation.

What is the rainiest month in Summit?

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

When it does not snow in Summit?

In Summit, New Jersey, snow does not fall in June through September.

How many hours of daylight does Summit have in July?

In Summit, the average length of the day in July is 14.7h.

What month has the most sunshine in Summit?

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

How many hours of sunshine does Summit have in July?

In Summit, the average sunshine in July is 10.3h.

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

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

How high is the UV index in July in Summit?

In Summit, New Jersey, the average daily maximum UV index in July is 6. A UV Index reading of 6 to 7 represents a high health vulnerability from the exposure to the Sun's UV rays.
Average temperature in July - Summit, 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 - Summit, 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").

Average wind speed in July - Summit, 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 - Summit, NJ
  • Average humidity in July: 75%

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

Average rainfall in July - Summit, 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 - Summit, 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 - Summit, NJ
  • Average snowfall in July: 0"

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

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

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

Average daylight in July / Average sunshine in July - Summit, NJ
  • Average daylight in July: 14.7h

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: 10.3h

The month with the most sunshine is July (Average sunshine: 10.3h).
The month with the least sunshine is February (Average sunshine: 4.6h).

Average sunshine days in July - Summit, 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 - Summit, NJ
  • Average UV index in July: 6

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

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

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

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

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).