July Weather in Deer Isle, United States

Last updated: February 24, 2025

July in Deer Isle, United States, offers a delightful summer experience characterized by mild temperatures. With a maximum of 22°C (72°F) and an average of 16°C (62°F), visitors can enjoy comfortably warm days and cooler nights, making it ideal for outdoor activities. However, anticipate a bit of moisture, as the area experiences about 92 mm (3.6 in) of precipitation over 10 days, contributing to a humidity level of 74%. This combination of warmth and occasional rain creates a lush and vibrant landscape, perfect for exploring the natural beauty of Deer Isle.

July Temperature in Deer Isle

In July, Deer Isle, United States, experiences a delightful warmth that marks a significant transition from the chilling depths of winter. As the month unfolds, temperatures climb with a minimum of 12°C (54°F) and an average of 16°C (62°F), reaching a cheerful maximum of 22°C (72°F). This upward trend from the cooler months reflects the region's embrace of summer, creating the perfect atmosphere for outdoor activities and leisure. Compared to the chilly averages of earlier months, July brings a refreshing and inviting warmth that draws residents and visitors alike to enjoy the natural beauty and vibrant life of Deer Isle. With its mild conditions, July serves as a harmonious peak in the yearly temperature cycle, celebrating the warmth of summer amidst the ever-changing landscape.

July Weather in Deer Isle: Daily Temperature Highs, Lows, and Averages

The chart illustrates July temperature patterns in Deer Isle, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec292933414856616460544334
Data source: Temperature data for Deer Isle generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

July Precipitation in Deer Isle

In July, Deer Isle experiences an average precipitation of 92 mm (3.6 in) over approximately 10 days, reflecting a modest dip compared to June's rainfall. This trend of decreasing precipitation from the lush spring months signifies the gradual transition into the drier summer period. Despite the lower rainfall, July remains comparably humid, typical of coastal Maine, fostering the vibrant summer greenery that characterizes the landscape. The consistent pattern of precipitation throughout the year highlights Deer Isle's dynamic climate, where varying moisture levels create a rich tapestry of seasonal changes, inviting visitors to enjoy both the sunlit days and the refreshing summer showers.

July Precipitation Trends in Deer Isle

The chart displays monthly precipitation patterns in Deer Isle, with values for each month alongside July's data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how July's conditions compare to those of other months.
JanFebMarAprMayJunJulAugSepOctNovDec10810584157105879286102145138155
Data source: Precipitation data for July generated using information from the Copernicus Climate Change Service.
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July Humidity in Deer Isle

In Deer Isle, United States, July marks the culmination of a gradual decline in humidity from the start of the year, maintaining a consistent 74%. As the summer unfolds, humidity levels remain stable, mirroring June and August, which creates a comfortable environment for outdoor activities. The trend reveals a noticeable decrease from the high humidity levels of 88% in January and February, showcasing a shift towards a drier summer. While humidity in July is relatively low, it begins to rise again as autumn approaches, suggesting a cyclical pattern that characterizes the coastal climate of this charming locale.

July Average Humidity in Deer Isle

This chart illustrates the average monthly humidity levels in Deer Isle, with July's data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, allowing you to see how July's humidity levels compare to other months.
JanFebMarAprMayJunJulAugSepOctNovDec88%88%85%81%76%74%74%74%77%82%85%84%
Data source: Humidity data for July generated using information from the Copernicus Climate Change Service.

July UV Index in Deer Isle

In July, Deer Isle experiences a very high UV Index of 9, consistent with the preceding months of May and June. This elevated level means that sun protection becomes crucial, as the burn time is notably short at just 15 minutes. The trend toward stronger UV radiation during the summer months highlights the need for vigilance while enjoying outdoor activities. As temperatures rise and the sun becomes more intense, it's essential to stay informed and protected. For more detailed information on UV levels throughout the year, refer to Deer Isle UV Index.

Maximum UV Index Levels in Deer Isle for July

The chart shows the monthly maximum UV Index (UVI) for Deer Isle in July, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues.
JanFebMarAprMayJunJulAugSepOctNovDec245799987532
Data source: Deer Isle July UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

July Sunshine in Deer Isle

July in Deer Isle shines bright with 316 hours of sunshine, continuing the trend set by the previous month. The days are long and warm, inviting both locals and visitors to bask in the glorious summer rays. Following June’s peak of 317 hours, July maintains the momentum, setting the stage for outdoor adventures and vibrant coastal life. As summer progresses, August even surpasses July with 325 hours, marking it as the sunniest month of the year. The gradual increase in daylight from January's modest 143 hours to the summery heights of July and August showcases not just warmer weather, but also the natural beauty that captivates all who embrace it.

Monthly Sunshine Duration in Deer Isle: July Highlighted

The July sunshine duration represents the total number of hours Deer Isle experiences direct sunlight during the month of July, excluding cloudy or obstructed periods. This chart compares the sunshine duration of July with the other months of the year.
JanFebMarAprMayJunJulAugSepOctNovDec143h187h255h238h286h317h316h325h278h216h180h170h
Data source: Deer Isle July Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Deer Isle During July

In Deer Isle, the likelihood of sunny weather takes a noticeable dip in July, with only a 26% chance of sunshine, marking it as one of the less favorable months for clear skies. This downturn is part of a broader trend, as the sunny prospects begin to decline sharply from the previous months. While March enjoys a sunny 55%, and September sees a resurgence at 42%, July stands out with its relatively low probability, making it a pivotal month for those seeking sun. Observing these fluctuations, it's clear that while summer typically invites outdoor activities, July may require a touch of patience when it comes to basking in sunshine on Deer Isle.

Percentage of Sunny Days in July in Deer Isle

The chart illustrates the percentage of sunny days in Deer Isle throughout the year, with July highlighted. It highlights the variation in sunshine across each month and provides an overview of the typical frequency of sunny days, offering insights into how often Deer Isle experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec38%35%55%35%35%38%26%29%42%43%55%35%
Data source: Deer Isle July chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Deer Isle in July

In July, Deer Isle basks in an abundance of daylight, with the sun gracing the skies for a generous 15 hours daily. This peak in daylight mirrors the patterns seen from the previous months, where a gradual increase began in March with 11 hours, culminating in summer's brightness. As we transition from July to August, sunlight subtly wanes, dropping to 13 hours, hinting at the approach of autumn. The daylight duration not only marks the season's warmth but also sets the stage for vibrant outdoor activities, making July a quintessential month for enjoying the natural beauty of Deer Isle. This rhythm of light and darkness serves as a gentle reminder of the cyclical nature of the year, enhancing the allure of this picturesque location.

Average Daylight Hours in Deer Isle for July

The chart illustrates the variation in daylight duration in Deer Isle throughout the year, with July highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec9h 17m10h 28m11h 57m13h 29m14h 46m15h 25m15h 4m13h 55m12h 27m10h 56m9h 36m8h 54m
Data source: Deer Isle daylight hours, calculated by summing the hours between sunrise and sunset for each day.

July Winds in Deer Isle

In Deer Isle, United States, July brings a noticeable drop in wind speed, with an average of only 4.6 m/s (10 mph), making it the calmest month of the year. This decline follows a gradual easing from June's 5.7 m/s (13 mph), signaling a shift in the summer breeze. As the season progresses into August, the wind further softens to 4.2 m/s (9 mph), suggesting a trend of gentle winds during the warmest months. Contrastingly, the year begins with brisk winds, peaking in March at 7.7 m/s (17 mph), showcasing how the summer months provide a peaceful respite from the gusty conditions of winter and spring. Overall, July's tranquil winds invite a serene atmosphere, perfect for enjoying the natural beauty of Deer Isle.

Average July Wind Speed in Deer Isle

The chart displays monthly wind speed patterns in Deer Isle, with values for each month shown alongside July's data, which is highlighted for easy comparison. It illustrates the average wind speed, offering insights into how July's wind conditions compare to the rest of the year.
JanFebMarAprMayJunJulAugSepOctNovDec7.36.97.76.35.55.74.6 m/s4.25.45.96.97.4
Data source: Deer Isle July wind data, generated using information from the Copernicus Climate Change Service.

How July Weather in Deer Isle Compares to Other Months

The weather in Deer Isle changes throughout the year, offering a unique experience in each season. Below is a month-by-month comparison of July's weather with other months, highlighting differences in temperature, precipitation, and other key factors. Click on each section to discover seasonal trends in Deer Isle and find detailed weather information for every month.

July and January present stark contrasts in weather conditions. In July, temperatures range from a mild minimum of 12°C (54°F) to a pleasant maximum of 22°C (72°F), with an average of 16°C (62°F). The month experiences about 92 mm (3.6 in) of precipitation over approximately 10 days, accompanied by a humidity level of 74%. In contrast, January brings much colder temperatures, with a minimum of -17°C (2°F), an average of -2°C (29°F), and a maximum of 10°C (50°F). Precipitation is slightly higher at 108 mm (4.3 in) over 9 days, and humidity peaks at 88%. Such differences highlight the seasonal shifts in Deer Isle's climate. For more details on January's weather, you can visit Deer Isle weather in January.

July and February present contrasting weather conditions, showcasing the extremes of the seasons. In July, temperatures are mild, with a minimum of 12°C (54°F) and an average of 16°C (62°F), while February experiences much colder conditions, with temperatures dipping as low as -15°C (6°F) and averaging -1°C (30°F). Precipitation is slightly higher in February, totaling 105 mm (4.1 in) over 11 days compared to July's 92 mm (3.6 in) over just 10 days. Moreover, humidity levels are noticeably higher in February at 88%, compared to July's 74%, contributing to a more frigid and damp atmosphere during the winter month. For more detailed information about February weather, visit Deer Isle weather in February.

In comparing the weather of July and March, a stark contrast emerges. July experiences much milder temperatures, with averages around 16°C (62°F) and maximums reaching 22°C (72°F), while March is significantly colder, averaging around 0°C (33°F) and peaking at just 10°C (50°F). Although July sees slightly more precipitation at 92 mm (3.6 in) compared to March's 84 mm (3.3 in), the humidity is somewhat lower in July at 74% versus March's 85%. This results in a relatively dry and warm summer month, in contrast to the damp and chilly conditions of early spring. For more detailed weather insights specific to March, you can visit Deer Isle weather in March.

When comparing the weather in July and April, it’s clear that July is significantly warmer. July boasts a comfortable temperature range with a minimum of 12°C (54°F) and an average of 16°C (62°F), peaking at a pleasant 22°C (72°F). In contrast, April experiences much cooler temperatures, with a minimum of -3°C (27°F) and an average of 5°C (41°F). Additionally, while both months see precipitation, July’s 92 mm (3.6 in) over 10 days is notably less than April's 157 mm (6.2 in) across 13 days. Humidity levels are also higher in April at 81%, compared to 74% in July, reflecting a more humid spring atmosphere. For a closer look at April's weather specifics, visit Deer Isle weather in April.

When comparing the weather in July and May, July tends to be significantly warmer, with average temperatures reaching 16°C (62°F) compared to May's milder 9°C (49°F). The maximum temperature in July can peak at 22°C (72°F), whereas May’s highest temperature is 17°C (64°F). Both months experience a similar amount of precipitation, with July seeing 92 mm (3.6 in) over 10 days and May slightly higher at 105 mm (4.1 in) over 11 days. Humidity is relatively comparable, with July at 74% and May slightly higher at 76%. For more details, check out Deer Isle weather in May.

When comparing the weather in June and July, July tends to be slightly warmer with an average temperature of 16°C (62°F) compared to June's average of 13°C (56°F). While both months share the same humidity level of 74%, July experiences a higher maximum temperature, reaching up to 22°C (72°F) versus June's maximum of 20°C (69°F). Precipitation levels are similar, with July recording 92 mm (3.6 in) over 10 days and June having 87 mm (3.4 in) over 9 days. For more details on the weather in June, you can check Deer Isle weather in June.

In comparing the weather between July and August, we see a slight warming trend from July to August. July features temperatures ranging from a minimum of 12°C (54°F) to a maximum of 22°C (72°F), with an average of 16°C (62°F) and a notable 92 mm (3.6 in) of precipitation spread over 10 days. In contrast, August sees a marginal increase in temperatures, with minimums at 13°C (57°F), an average of 18°C (64°F), and maximums reaching 23°C (73°F). Rainfall is slightly reduced to 86 mm (3.4 in) over just 8 days. Both months maintain a consistent humidity level of 74%, ensuring a comfortable start to late summer. For a more detailed look at August weather, you can visit Deer Isle weather in August.

In comparing the weather between July and September, both months feature the same maximum average temperature of 22°C (72°F), making them relatively warm. However, July tends to be slightly warmer overall with a minimum temperature of 12°C (54°F) compared to September's cooler 9°C (48°F). Precipitation in September is marginally higher at 102 mm (4.0 in) over 8 days, versus July's 92 mm (3.6 in) spread over 10 days. Humidity levels are also slightly elevated in September, reaching 77%, compared to July's 74%. For more details about weather specifics in September, visit Deer Isle weather in September.

In July, the weather is generally milder with average temperatures ranging from a minimum of 12°C (54°F) to a maximum of 22°C (72°F) and a lower precipitation level of 92 mm (3.6 in) over approximately ten days. In contrast, October experiences cooler temperatures, with averages dropping to a minimum of 2°C (35°F) and a maximum of 18°C (65°F) and a higher precipitation level of 145 mm (5.7 in) spread over twelve days. Additionally, October shows increased humidity at 82%, compared to July's 74%. For more detailed weather insights, check out Deer Isle weather in October.

July and November exhibit dramatically different weather patterns. In July, temperatures range from a mild 12°C (54°F) to a comfortable maximum of 22°C (72°F), accompanied by relatively high humidity levels at 74%. The month experiences about 92 mm (3.6 in) of precipitation over 10 days, but overall, it feels warmer and more pleasant. In contrast, November brings the chill, with temperatures ranging from a frigid -11°C (13°F) at night to an average of 6°C (43°F), only peaking at 16°C (62°F). This month sees increased precipitation at 138 mm (5.4 in) across 12 days, along with elevated humidity at 85%, which can contribute to a damp and colder atmosphere. For more details on the weather in this month, you can check Deer Isle weather in November.

The weather in July differs significantly from December in Deer Isle. In July, temperatures range from a minimum of 12°C (54°F) to a maximum of 22°C (72°F), with an average of 16°C (62°F) and relatively moderate humidity at 74%. Precipitation is fairly mild, with about 92 mm (3.6 in) falling over 10 days. In contrast, December experiences much colder conditions, with minimum temperatures plunging to -17°C (2°F) and a maximum of 13°C (56°F), resulting in an average temperature of just 1°C (34°F). Notably, December sees increased precipitation at 155 mm (6.1 in) over 12 days and higher humidity at 84%. For a detailed look at weather specifics, check out Deer Isle weather in December.

Compare Deer Isle's Climate with Cities Worldwide

Conclusion: What to Expect From July Weather in Deer Isle

July on Deer Isle is marked by warm temperatures that create a pleasant summer atmosphere, distinct from the cooler, variable conditions of spring and autumn. With an average temperature of 16°C, this month tends to be one of the warmest, inviting visitors to enjoy outdoor activities. However, the 74% humidity adds a tropical touch, making the air feel a bit heavier. While July does experience some precipitation, with rain on about 10 days, it generally gives way to abundant sunshine, contrasting with the more frequent storms of earlier months. To gain a deeper understanding of the climatic variations throughout the year, explore the full details at Deer Isle Climate.