July weather forecastDeer Isle, ME
July
Weather in July
July is characterized by the most robust appearance of summer in Deer Isle, Maine. The high average temperature soars to 68.7°F (20.4°C), making July the hottest month of the year. On top of warm temperatures, there are significantly longer daylight hours, increasing outdoor activities. Despite the high temperatures, coastal breezes from nearby bodies of water provide some relief. It's characterized by outdoor festivals and activities as people enjoy the sun in all its summer glory.Temperature
July's arrival is noted with a slight increase in the average high-temperature, moving from a comfortable 62.2°F (16.8°C) in June to a pleasant 68.7°F (20.4°C). Deer Isle registers a consistent average low-temperature of 59.5°F (15.3°C) during July.Humidity
July is the most humid month, with an average relative humidity of 85%.Rainfall
In Deer Isle, in July, it is raining for 12.8 days, with typically 1.34" (34mm) of accumulated precipitation. In Deer Isle, during the entire year, the rain falls for 115.5 days and collects up to 17.95" (456mm) of precipitation.Snowfall
May through September are months without snowfall.Ocean temperature
In Deer Isle, in July, the average water temperature is 56.8°F (13.8°C).Note: With the appropriate swimsuit, one can swim in 56.8°F (13.8°C) even if temperatures dip below 50°F (10°C); otherwise, be ready for cold shock and breath issues. A fleeting swim around 55.4°F (13°C) is distressing.
Daylight
The average length of the day in July is 15h and 7min.On the first day of the month, sunrise is at 4:55 am and sunset at 8:22 pm. On the last day of July, in Deer Isle, sunrise is at 5:22 am and sunset at 8:00 pm EDT.
Sunshine
In July, the average sunshine is 9.9h.UV index
June through August, with an average maximum UV index of 5, are months with the highest UV index. A UV Index reading of 3 to 5 represents a moderate health risk from exposure to the Sun's UV rays for ordinary individuals.Note: In July, the UV index of 5 transforms into the following advice:
Prioritize safety - Suggestions to prevent sun damage are offered. Being in direct Sun during midday can be harmful due to intense solar radiation; take precautions. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in July
Deer Isle, ME
- Average high temperature in July: 68.7°F
The warmest month (with the highest average high temperature) is August (68.9°F).
The month with the lowest average high temperature is January (31.5°F).
- Average low temperature in July: 59.5°F
The month with the highest average low temperature is August (59.9°F).
The coldest month (with the lowest average low temperature) is January (21°F).
Average pressure in July
Deer Isle, ME
- Average pressure in July: 29.93"Hg
The month with the highest atmospheric pressure is September (30.04"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in July
Deer Isle, ME
- Average wind speed in July: 7.8mph
The windiest month (with the highest average wind speed) is January (14.4mph).
The calmest months (with the lowest average wind speed) are July and August (7.8mph).
Average humidity in July
Deer Isle, ME
- Average humidity in July: 85%
The month with the highest relative humidity is July (85%).
The month with the lowest relative humidity is November (76%).
Average rainfall in July
Deer Isle, ME
- Average rainfall in July: 1.34"
The wettest month (with the highest rainfall) is October (2.09").
The driest month (with the least rainfall) is September (0.91").
Average rainfall days in July
Deer Isle, ME
- Average rainfall days in July: 12.8 days
The month with the highest number of rainy days is July (12.8 days).
The month with the least rainy days is February (5.3 days).
Average snowfall in July
Deer Isle, ME
- Average snowfall in July: 0"
The month with the highest snowfall is February (2.32").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in July
Deer Isle, ME
- Average snowfall days in July: 0 days
The month with the highest number of snowfall days is January (7.7 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average sea temperature in July
Deer Isle, ME
- Average sea temperature in July: 56.7°F
The best month for swimming (with the highest average sea temperature) is August (58.6°F).
The coldest month (with the lowest average sea temperature) is March (38.2°F).
Average daylight in July /
Average sunshine in July
Deer Isle, ME
- Average daylight in July: 15h and 6min
The month with the longest days is June (Average daylight: 15h and 30min).
The month with the shortest days is December (Average daylight: 8h and 54min).
- Average sunshine in July: 9h and 54min
The month with the most sunshine is August (Average sunshine: 10h and 24min).
The month with the least sunshine is December (Average sunshine: 4h and 30min).
Average sunshine days in July
Deer Isle, ME
- Average sunshine days in July: 15.4 days
The month with the most sunshine days is September (19.9 days).
The month with the least sunshine days is July (15.4 days).
Average UV index in July
Deer Isle, ME
- Average UV index in July: 5
The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover in July
Deer Isle, ME
- Average cloud cover in July: 36
The months with the most cloud cover are February and March (Cloud cover 52).
The month with the least cloud cover is August (Cloud cover 31).
Average visibility in July
Deer Isle, ME
- 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).
