July weather forecastDunellen, NJ
July
Weather in July
July, like June, in Dunellen, New Jersey, is a moderately hot summer month, with an average temperature fluctuating between 66.6°F (19.2°C) and 84.4°F (29.1°C).Temperature
Dunellen experiences its highest average temperatures in July, reaching a peak of 84.4°F (29.1°C) and a minimum of 66.6°F (19.2°C).Heat index
July's average heat index is calculated to be a hot 93.2°F (34°C). Undertake enhanced precautions, heat exhaustion and heat cramps are possible risks. Continuous activity could trigger heatstroke.Keep in mind the heat index values are meant for areas in shade and with light wind. Direct exposure to sunshine could lead to a heat index increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', is a composite of temperature and humidity figures to convey how warm it feels. This impact is subjective, influenced by the person's physical activity and individual heat perception, affected by factors including wind, attire, and metabolic differences. Direct sunlight exposure should be noted as it has the potential to increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly important for children. Children frequently do not comprehend the need for rest and hydration. Thirst is an advanced stage of dehydration - staying hydrated, especially during extended physical exercises, is essential.
Humidity
In Dunellen, the average relative humidity in July is 74%.Rainfall
In Dunellen, during July, the rain falls for 16.4 days and regularly aggregates up to 3.03" (77mm) of precipitation. Throughout the year, there are 155.4 rainfall days, and 31.18" (792mm) of precipitation is accumulated.Snowfall
In Dunellen, snow does not fall in June through September.Daylight
The average length of the day in July is 14h and 44min.On the first day of the month, sunrise is at 5:31 am and sunset at 8:32 pm. On the last day of July, in Dunellen, sunrise is at 5:54 am and sunset at 8:13 pm EDT.
Sunshine
With an average of 10.3h of sunshine, July has the most sunshine of the year.UV index
June through August, with an average maximum UV index of 6, are months with the highest UV index. A UV Index of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV radiation for average individuals.Note: The maximum UV index, 6 during July, leads to the following recommendations:
Use protective steps and abide by sun safety guidelines. Safeguarding against skin and eye harm is necessary. Remember that UV radiation from the Sun is strongest between 10 a.m. and 4 p.m. Make an effort to limit direct sun exposure during this time. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in July
Dunellen, NJ
- Average high temperature in July: 84.4°F
The warmest month (with the highest average high temperature) is July (84.4°F).
The month with the lowest average high temperature is January (35.6°F).
- Average low temperature in July: 66.6°F
The month with the highest average low temperature is July (66.6°F).
The coldest month (with the lowest average low temperature) is January (23.2°F).
Average pressure in July
Dunellen, 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
Dunellen, NJ
- Average wind speed in July: 5.5mph
The windiest month (with the highest average wind speed) is March (8.6mph).
The calmest months (with the lowest average wind speed) are July and August (5.5mph).
Average humidity in July
Dunellen, NJ
- Average humidity in July: 74%
The month with the highest relative humidity is February (79%).
The months with the lowest relative humidity are April and August (73%).
Average rainfall in July
Dunellen, NJ
- Average rainfall in July: 3.03"
The wettest month (with the highest rainfall) is December (3.31").
The driest month (with the least rainfall) is September (1.57").
Average rainfall days in July
Dunellen, NJ
- Average rainfall days in July: 16.4 days
The month with the highest number of rainy days is May (17.5 days).
The month with the least rainy days is January (8.4 days).
Average snowfall in July
Dunellen, NJ
- Average snowfall in July: 0"
The month with the highest snowfall is March (4.06").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in July
Dunellen, NJ
- Average snowfall days in July: 0 days
The month with the highest number of snowfall days is January (7.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in July /
Average sunshine in July
Dunellen, NJ
- Average daylight in July: 14h and 42min
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 18min).
- Average sunshine in July: 10h and 18min
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
Dunellen, NJ
- Average sunshine days in July: 13.1 days
The month with the most sunshine days is November (18.4 days).
The month with the least sunshine days is May (11.6 days).
Average UV index in July
Dunellen, 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
Dunellen, NJ
- Average cloud cover in July: 34
The months with the most cloud cover are February, March and December (Cloud cover 49).
The month with the least cloud cover is July (Cloud cover 34).
Average visibility in July
Dunellen, NJ
- Average visibility in July: 6mi
The months with the highest visibility are January, February, March, April, June, July, August, October, November and December (6mi).
The months with the lowest visibility are May and September (5mi).





