July weather forecastDelaware, NJ
July
Weather in July
July, the same as June, is a moderately hot summer month in Delaware, New Jersey, with an average temperature ranging between max 82.2°F (27.9°C) and min 61.2°F (16.2°C).Temperature
Temperature records mark July as the warmest month, with highs averaging 82.2°F (27.9°C) and lows at 61.2°F (16.2°C).Heat index
The heat index value during July is evaluated at a hot 87.8°F (31°C). Ongoing exposure and activity could lead to a state of exhaustion, with a chance of heat cramps.Heat index determinations are made taking into account the shade and light air movements. Exposing to direct sunshine may enhance heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'apparent temperature', provides an understanding of perceived warmth by combining temperature and relative humidity. Elements such as metabolic variations, pregnancy, and physical exertion can shape one's weather perception. You should know that direct sun exposure can heighten weather effects, potentially elevating the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for babies and toddlers. Young individuals usually face more risks than adults due to their lower sweat production. Their large skin surface area relative to their tiny bodies and high heat production from their activities adds to their risk.
Humidity
The average relative humidity in July is 77%.Rainfall
The month with the most rainfall is July, when the rain falls for 17.4 days and typically aggregates up to 3.11" (79mm) of precipitation.Snowfall
In Delaware, snow does not fall in June through September.Daylight
In July, the average length of the day in Delaware is 14h and 46min.On the first day of July, sunrise is at 5:32 am and sunset at 8:35 pm. On the last day of the month, sunrise is at 5:56 am and sunset at 8:16 pm EDT.
Sunshine
July has the most sunshine of the year in Delaware, with an average of 10.2h of sunshine.UV index
In Delaware, the average daily maximum UV index in July is 5. A UV Index of 3 to 5 symbolizes a moderate threat to health from unsafe exposure to UV radiation for ordinary individuals.Note: The maximum UV index of 5 during July translates into these guidelines:
Preventative actions are necessary - Recommendations to ward off sunburn are given. The Sun's most harmful UV rays are emitted around midday; avoid staying outdoors for long during this time. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in July
Delaware, NJ
- Average high temperature in July: 82.2°F
The warmest month (with the highest average high temperature) is July (82.2°F).
The month with the lowest average high temperature is January (32.5°F).
- Average low temperature in July: 61.2°F
The month with the highest average low temperature is July (61.2°F).
The coldest month (with the lowest average low temperature) is January (19.8°F).
Average pressure in July
Delaware, 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
Delaware, NJ
- Average wind speed in July: 5mph
The windiest months (with the highest average wind speed) are January, February and March (7.8mph).
The calmest month (with the lowest average wind speed) is August (4.9mph).
Average humidity in July
Delaware, NJ
- Average humidity in July: 77%
The months with the highest relative humidity are February, October and December (82%).
The month with the lowest relative humidity is April (76%).
Average rainfall in July
Delaware, NJ
- Average rainfall in July: 3.11"
The wettest month (with the highest rainfall) is July (3.11").
The driest month (with the least rainfall) is September (1.81").
Average rainfall days in July
Delaware, 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 February (9.5 days).
Average snowfall in July
Delaware, NJ
- Average snowfall in July: 0"
The month with the highest snowfall is February (5.67").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in July
Delaware, NJ
- Average snowfall days in July: 0 days
The month with the highest number of snowfall days is January (11.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in July /
Average sunshine in July
Delaware, NJ
- Average daylight in July: 14h and 48min
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 12min
The month with the most sunshine is July (Average sunshine: 10h and 12min).
The month with the least sunshine is February (Average sunshine: 4h and 18min).
Average sunshine days in July
Delaware, NJ
- Average sunshine days in July: 12.1 days
The month with the most sunshine days is November (16.4 days).
The month with the least sunshine days is June (11.1 days).
Average UV index in July
Delaware, NJ
- Average UV index in July: 5
The month with the highest UV index is June (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in July
Delaware, NJ
- Average cloud cover in July: 35
The month with the most cloud cover is February (Cloud cover 52).
The month with the least cloud cover is July (Cloud cover 35).
Average visibility in July
Delaware, NJ
- Average visibility in July: 5mi
The month with the highest visibility is April (6mi).
The months with the lowest visibility are January, February, March, May, June, July, August, September, October, November and December (5mi).
