Contents
- Weather in July
- Frequently asked questions
- Average temperature in July
- Average pressure in July
- Average wind speed in July
- Average humidity in July
- Average rainfall in July
- Average rainfall days in July
- Average snowfall in July
- Average snowfall days in July
- Average daylight in July
- Average sunshine in July
- Average sunshine days in July
- Average UV index in July
- Average cloud cover in July
- Average visibility in July
Weather in July
Temperature
July temperatures in Derry tend to peak at an average high of 81.7°F (27.6°C) and dip to a low of 61°F (16.1°C).Heat index
The heat index for July is estimated at a tropical 86°F (30°C). Enduring exposure and ongoing activity could cause a sense of fatigue and subsequent heat cramps.Given the heat index, its values are aligned with shaded sites and gentle winds. With 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 'felt air temperature' or 'feels like', is a fusion of air temperature and moisture levels to demonstrate the sensation of heat. Elements such as metabolic variations, pregnancy, and physical exertion can influence one's weather perception. Recognize that direct exposure to the sun can escalate the heat effect, potentially adding 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are highly important for children. Young individuals are typically more threatened than adults due to their reduced perspiration. Also, the larger skin surface proportionate to their small bodies and the increased heat from their activities magnify their risk.
Humidity
The average relative humidity in July is 75%.Rainfall
In Derry, New Hampshire, in July, during 11.9 rainfall days, 1.3" (33mm) of precipitation is typically accumulated. In Derry, New Hampshire, during the entire year, the rain falls for 104.4 days and collects up to 12.95" (329mm) of precipitation.Snowfall
June through September are months without snowfall.Daylight
In July, the average length of the day is 14h and 58min.On the first day of July, sunrise is at 5:10 am and sunset at 8:27 pm. On the last day of the month, sunrise is at 5:36 am and sunset at 8:07 pm EDT.
Sunshine
The average sunshine in July in Derry, New Hampshire, is 10.1h.UV index
The months with the highest UV index are June through August, with an average maximum UV index of 6. A UV Index estimate of 6 to 7 represents a high health hazard from unsafe exposure to UV radiation for the average person.Note: A maximum high daily UV index of 6 during July translates into the following directions:
Adopt measures and apply sun safety strategies. Shielding from skin and eye damage is necessary. To the best of your ability, limit your exposure to the sun between the hours of 10 a.m. and 4 p.m., when UV radiation is at its peak. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays.
Frequently asked questions
What are the warmest months in Derry?
What is the average July temperature in Derry?
What is the average humidity in July in Derry?
How many days does it rain in July in Derry?
When it does not snow in Derry?
How many hours of daylight does Derry have in July?
When is the sunrise / sunset in July in Derry?
How many hours of sunshine does Derry have in July?
What is the month with the highest UV index in Derry?
What is the UV index intensity in July in Derry?
Average temperature in July
Derry, NH
- Average high temperature in July: 81.7°F
The warmest month (with the highest average high temperature) is July (81.7°F).
The month with the lowest average high temperature is January (30.6°F).
- Average low temperature in July: 61°F
The month with the highest average low temperature is July (61°F).
The coldest month (with the lowest average low temperature) is January (18°F).
Average pressure in July
Derry, NH
- Average pressure in July: 29.94"Hg
The month with the highest atmospheric pressure is November (30.07"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in July
Derry, NH
- Average wind speed in July: 5.2mph
The windiest month (with the highest average wind speed) is January (8.3mph).
The calmest month (with the lowest average wind speed) is August (5.1mph).
Average humidity in July
Derry, NH
- Average humidity in July: 75%
The month with the highest relative humidity is February (81%).
The month with the lowest relative humidity is April (72%).
Average rainfall in July
Derry, NH
- Average rainfall in July: 1.3"
The wettest month (with the highest rainfall) is October (1.38").
The driest month (with the least rainfall) is January (0.75").
Average rainfall days in July
Derry, NH
- Average rainfall days in July: 11.9 days
The month with the highest number of rainy days is June (12.1 days).
The month with the least rainy days is January (4.1 days).
Average snowfall in July
Derry, NH
- Average snowfall in July: 0"
The month with the highest snowfall is December (2.99").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in July
Derry, NH
- Average snowfall days in July: 0 days
The month with the highest number of snowfall days is January (7.1 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in July /
Average sunshine in July
Derry, NH
- Average daylight in July: 15h and 0min
The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in July: 10h and 1min
The month with the most sunshine is August (Average sunshine: 10h and 24min).
The month with the least sunshine is February (Average sunshine: 4h and 36min).
Average sunshine days in July
Derry, NH
- Average sunshine days in July: 17.1 days
The months with the most sunshine days are January and December (21.3 days).
The month with the least sunshine days is June (16.7 days).
Average UV index in July
Derry, NH
- 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
Derry, NH
- Average cloud cover in July: 35
The month with the most cloud cover is March (Cloud cover 51).
The month with the least cloud cover is August (Cloud cover 33).
Average visibility in July
Derry, NH
- Average visibility in July: 5mi
The months with the highest visibility are January, April, November and December (6mi).
The months with the lowest visibility are February, March, May, June, July, August, September and October (5mi).
Derry, New Hampshire, USA
Weather forecast for your location
2. Allow the app to use your location
