July weather forecastNew Castle, NH
July
Weather in July
July is the warmest month in New Castle with a maximum temperature of 76.3°F (24.6°C). Sea temperature, too, peaks at this time, enticing locals and tourists to indulge in beachside activities. Despite the frequent rainfall, the month enjoys its longest sunshine duration, offering radiant and warm days. The city's weather is dominated by clear skies, showing the least cloud cover during the year.Temperature
The warmest period is July, when temperatures fluctuate between an average high of 76.3°F (24.6°C) and a low of 62.6°F (17°C).Humidity
In New Castle, the average relative humidity in July is 79%.Rainfall
In New Castle, in July, during 14.1 rainfall days, 2.17" (55mm) of precipitation is typically accumulated. In New Castle, during the entire year, the rain falls for 144.2 days and collects up to 27.48" (698mm) of precipitation.Snowfall
In New Castle, snow does not fall in May through September.Ocean temperature
In New Castle, the average seawater temperature in July is 63.1°F (17.3°C).Note: For most people, a water temperature of 63.1°F (17.3°C) is not conducive to enjoyable swimming. Breathing control becomes harder as the water temperature dips below 69.8°F (21°C).
Daylight
The average length of the day in July is 14h and 59min.On the first day of the month, sunrise is at 5:07 am and sunset at 8:26 pm. On the last day of July, sunrise is at 5:33 am and sunset at 8:05 pm EDT.
Sunshine
In July, the average sunshine is 10.3h.UV index
July and 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 health vulnerability from unsafe exposure to UV radiation for the ordinary person.Note: A typical high UV index of 6 in July suggests the following recommendations:
Dodge overexposure. Fair-skinned people can get singed in less than 20 minutes. The time between 10 a.m. and 4 p.m. is when UV radiation is at its peak. Limit exposure to direct sunlight during these hours. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in July
New Castle, NH
- Average high temperature in July: 76.3°F
The warmest month (with the highest average high temperature) is July (76.3°F).
The month with the lowest average high temperature is January (31.8°F).
- Average low temperature in July: 62.6°F
The month with the highest average low temperature is July (62.6°F).
The coldest month (with the lowest average low temperature) is January (21.2°F).
Average pressure in July
New Castle, NH
- Average pressure in July: 29.94"Hg
The month with the highest atmospheric pressure is November (30.06"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in July
New Castle, NH
- Average wind speed in July: 6.6mph
The windiest month (with the highest average wind speed) is January (11.7mph).
The calmest month (with the lowest average wind speed) is July (6.6mph).
Average humidity in July
New Castle, NH
- Average humidity in July: 79%
The month with the highest relative humidity is June (80%).
The months with the lowest relative humidity are April and November (75%).
Average rainfall in July
New Castle, NH
- Average rainfall in July: 2.17"
The wettest month (with the highest rainfall) is October (2.83").
The driest month (with the least rainfall) is September (1.54").
Average rainfall days in July
New Castle, NH
- Average rainfall days in July: 14.1 days
The month with the highest number of rainy days is June (15 days).
The month with the least rainy days is January (7.5 days).
Average snowfall in July
New Castle, NH
- Average snowfall in July: 0"
The month with the highest snowfall is January (4.02").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in July
New Castle, NH
- Average snowfall days in July: 0 days
The month with the highest number of snowfall days is January (8.8 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average sea temperature in July
New Castle, NH
- Average sea temperature in July: 63.1°F
The best month for swimming (with the highest average sea temperature) is August (65.6°F).
The coldest month (with the lowest average sea temperature) is March (38.5°F).
Average daylight in July /
Average sunshine in July
New Castle, 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 18min
The month with the most sunshine is August (Average sunshine: 10h and 36min).
The months with the least sunshine are February and December (Average sunshine: 4h and 48min).
Average sunshine days in July
New Castle, NH
- Average sunshine days in July: 14.8 days
The month with the most sunshine days is September (16.8 days).
The month with the least sunshine days is April (13.2 days).
Average UV index in July
New Castle, NH
- Average UV index in July: 6
The months with the highest UV index are 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
New Castle, NH
- Average cloud cover in July: 32
The month with the most cloud cover is March (Cloud cover 50).
The month with the least cloud cover is August (Cloud cover 29).
Average visibility in July
New Castle, NH
- Average visibility in July: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).





