July weather forecastOnset, MA
July
Weather in July
July is a warm summer month in Onset, Massachusetts, with an average temperature varying between 66.4°F (19.1°C) and 75.6°F (24.2°C).Temperature
July, known for its average high temperature of 75.6°F (24.2°C) and an average low temperature of 66.4°F (19.1°C), is the warmest month.Humidity
June and July, with an average relative humidity of 81%, are the most humid months in Onset.Rainfall
In Onset, in July, it is raining for 16 days, with typically 2.52" (64mm) of accumulated precipitation. In Onset, during the entire year, the rain falls for 157.4 days and collects up to 32.2" (818mm) of precipitation.Snowfall
In Onset, snow does not fall in May through September.Ocean temperature
In Onset, in July, the average water temperature is 66.2°F (19°C).Note: For most, swimming in 66.2°F (19°C) is not an enjoyable activity. Furthermore, controlling your breathing becomes progressively more difficult as the water temperature decreases from 69.8°F (21°C) to 59°F (15°C).
Daylight
In July, the average length of the day is 14h and 51min.On the first day of the month, sunrise is at 5:12 am and sunset at 8:21 pm. On the last day of July, sunrise is at 5:36 am and sunset at 8:01 pm EDT.
Sunshine
In Onset, Massachusetts, the average sunshine in July is 10.5h.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 exposure to the Sun's UV rays for the average person.Note: In July, the maximum UV index of 6 suggests this advice:
Embrace precautions and observe sun safety norms. Evasion of sunburn is a necessity. The Sun's UV radiation is at its strongest between the hours of 10 a.m. and 4 p.m. Minimize direct exposure to the sun during this period. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in July
Onset, MA
- Average high temperature in July: 75.6°F
The warmest month (with the highest average high temperature) is July (75.6°F).
The month with the lowest average high temperature is January (36.9°F).
- Average low temperature in July: 66.4°F
The month with the highest average low temperature is August (66.7°F).
The coldest month (with the lowest average low temperature) is January (27.7°F).
Average pressure in July
Onset, MA
- Average pressure in July: 29.95"Hg
The month with the highest atmospheric pressure is November (30.06"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in July
Onset, MA
- Average wind speed in July: 8.8mph
The windiest month (with the highest average wind speed) is January (13.7mph).
The calmest month (with the lowest average wind speed) is August (8.7mph).
Average humidity in July
Onset, MA
- Average humidity in July: 81%
The months with the highest relative humidity are June and July (81%).
The months with the lowest relative humidity are March and November (74%).
Average rainfall in July
Onset, MA
- Average rainfall in July: 2.52"
The wettest month (with the highest rainfall) is December (3.58").
The driest month (with the least rainfall) is September (1.81").
Average rainfall days in July
Onset, MA
- Average rainfall days in July: 16 days
The month with the highest number of rainy days is July (16 days).
The month with the least rainy days is January (9 days).
Average snowfall in July
Onset, MA
- Average snowfall in July: 0"
The months with the highest snowfall are February and March (2.28").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in July
Onset, MA
- Average snowfall days in July: 0 days
The month with the highest number of snowfall days is January (6 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average sea temperature in July
Onset, MA
- Average sea temperature in July: 66.2°F
The best month for swimming (with the highest average sea temperature) is August (68.4°F).
The coldest month (with the lowest average sea temperature) is February (38.2°F).
Average daylight in July /
Average sunshine in July
Onset, MA
- Average daylight in July: 14h and 54min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in July: 10h and 30min
The month with the most sunshine is August (Average sunshine: 10h and 42min).
The months with the least sunshine are February and December (Average sunshine: 4h and 48min).
Average sunshine days in July
Onset, MA
- Average sunshine days in July: 13.2 days
The month with the most sunshine days is November (16.3 days).
The month with the least sunshine days is April (12.5 days).
Average UV index in July
Onset, MA
- 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
Onset, MA
- Average cloud cover in July: 30
The month with the most cloud cover is March (Cloud cover 49).
The month with the least cloud cover is August (Cloud cover 28).
Average visibility in July
Onset, MA
- 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).
