Last updated: February 24, 2025
In October, Deer Isle, United States experiences a transition into the cooler months, with average temperatures hovering around 12°C (54°F). Daytime highs can reach up to 18°C (65°F), while nights can dip to 2°C (35°F), creating a dynamic weather landscape. The month brings a significant 145 mm (5.7 in) of precipitation spread over 12 days, contributing to the lush, autumnal scenery. Coupled with an average humidity of 82%, October in Deer Isle is characterized by its crisp air and vibrant foliage, making it a picturesque time to experience the beauty of this coastal region.
As October graces Deer Isle with its presence, the landscape transforms under the cool whispers of autumn. With minimum temperatures dipping to 2°C (35°F) and an average of 12°C (54°F), the island experiences a refreshing chill after the warmth of summer. The maximum temperatures reach a comfortable 18°C (65°F), making it an ideal time for outdoor activities to enjoy the vibrant fall foliage. This month marks a noticeable shift, as the warmth that characterized the previous months begins to wane, hinting at the winter chill ahead while still allowing for tranquil afternoons under the colorful canopy of autumn leaves.
October marks a striking transition in Deer Isle, United States, as the region experiences a notable increase in precipitation, totaling 145 mm (5.7 in) over 12 days. This surge highlights a shift from the milder, drier late summer months—where August and September each averaged around 86 mm—towards the wetter conditions typical of autumn and winter. The rainfall in October surpasses several preceding months, including a significant spike from August's 86 mm. As the leaves begin to change and the air turns crisp, the uptick in precipitation lays the groundwork for a vivid, yet damp, tapestry of fall on the island.
In October, Deer Isle experiences a modest rise in humidity, averaging 82%, which is a bit higher than the preceding month of September at 77%. This increase signals the transition into fall, where the air begins to retain more moisture as temperatures dip. Notably, October's humidity is still lower than the peak levels seen in winter months, with January and February both hovering at a high 88%. Throughout the year, humidity levels generally trend downward from the damp winter, stabilize in the warm summer months at around 74%, and gradually climb back up into the autumn. Thus, October serves as a bridge between the dry summer and the more humid winter, offering a refreshing change as nature prepares for the colder months ahead.
As October arrives in Deer Isle, the UV Index settles at a moderate level of 5, indicating a shift from the more intense summer months. After experiencing a peak in UV exposure during the summer, with values consistently at 9, the cooler fall weather brings a welcomed decrease in burn time to 30 minutes. This trend mirrors the gradual decline from September's 7, allowing residents and visitors to enjoy outdoor activities with a lower risk of skin damage. With temperatures dropping, it's essential to remain mindful of sun exposure, particularly during midday hours. For more detailed information, visit Deer Isle UV Index.
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In October, Deer Isle basks in a gentle embrace of 216 hours of sunshine, marking a transition from the vibrant summer months into the crispness of autumn. This month, while seeing a dip from the sun-soaked peaks of August and September, still offers a substantial amount of sunlight compared to the duller winter months ahead. The gradual decline in sunshine hours is part of a broader trend as the year progresses, highlighted by a dramatic increase from January's mere 143 hours to the summer's peak. As October weaves its tapestry of golden foliage and cooler air, residents and visitors alike revel in the warm rays that linger just a bit longer before the darker days of November and December take hold, showcasing the serene beauty of New England in fall.
In Deer Isle, October brings a 43% chance of sunny weather, marking a slight uptick from the preceding months. Following a summer lull, where sun chances dip to around 26-29%, the arrival of autumn seems to rejuvenate the skies. This month stands out, surpassing the relatively gloomy conditions of July and August, and edging closer to summer's more favorable probabilities. Notably, October's sun chance is also better than several months earlier in the year, such as January and February. As the leaves turn vibrant and cooler breezes set in, October offers a refreshing blend of sunny opportunities amidst the changing season.
As October rolls in, Deer Isle transitions into a season marked by a gradual retreat of daylight, with sunshine lasting around 10 hours. This decline follows the peak of summer, where June and July enjoyed a generous 15 hours of daylight. The months leading up to October showcase a steady increase in luminosity, with early spring bringing just 11 hours in March, climbing to a summer high in May. However, the onset of fall sees daylight diminish quickly; from a lively 13 hours in August and 12 hours in September, it’s clear that the days are getting shorter. This cyclical pattern of increasing and decreasing daylight captures the essence of the changing seasons in Deer Isle, setting the stage for cozy fall evenings as the year winds down.
As October rolls in, Deer Isle experiences a gentle uplift in wind speed, averaging 5.9 m/s (13 mph), a subtle rise from the calm of summer months, where low winds hovered around 4.2 m/s (9 mph) in August and 4.6 m/s (10 mph) in July. This seasonal shift marks a transition from the stillness of midsummer towards the briskness of autumn, often accompanied by vibrant fall foliage and cooler temperatures. Remarkably, October's winds are noticeably stronger than September's, which averaged 5.4 m/s (12 mph), hinting at the island's gradual embrace of the more turbulent winter months ahead. As the year progresses, November's winds pick up again to 6.9 m/s (15 mph), affirming the pattern of increasing gustiness as winter approaches.
The weather in Deer Isle changes throughout the year, offering a unique experience in each season. Below is a month-by-month comparison of October'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.
In October, the weather tends to be milder, with average temperatures ranging from a minimum of 2°C (35°F) to a maximum of 18°C (65°F). The month experiences significant rainfall, totaling 145 mm (5.7 in) over approximately 12 days, and a relatively high humidity level of 82%. In contrast, January provides a stark shift in conditions, featuring much colder temperatures that dip as low as -17°C (2°F), with an average of -2°C (29°F) and a maximum of 10°C (50°F). While precipitation is slightly lower at 108 mm (4.3 in) over about 9 days, the humidity is still notably high at 88%. For a comparison of these winter conditions, you can check out Deer Isle weather in January.
In October, the weather is significantly milder, with temperatures ranging from a minimum of 2°C (35°F) to a maximum of 18°C (65°F) and an average of 12°C (54°F). This month also sees considerable precipitation, with around 145 mm (5.7 in) falling over 12 days, and humidity levels at 82%. In contrast, February experiences much colder temperatures, with a minimum of -15°C (6°F) and a maximum of 9°C (49°F), averaging -1°C (30°F). Though there is slightly less precipitation at 105 mm (4.1 in) over 11 days, the humidity remains high at 88%. For a closer look at February weather specifics, check out Deer Isle weather in February.
October and March present contrasting weather characteristics that highlight the transition between summer and winter. In October, temperatures range from a minimum of 2°C (35°F) to a maximum of 18°C (65°F) with an average of 12°C (54°F). The month sees significant rainfall, totaling 145 mm (5.7 in) over about 12 days, accompanied by relatively high humidity at 82%. In stark contrast, March experiences much colder temperatures, with a minimum of -15°C (6°F) and a maximum of 10°C (50°F), resulting in an average temperature of just 0°C (33°F). Precipitation is lower at 84 mm (3.3 in) occurring over 9 days, and humidity levels are slightly higher at 85%. For more detailed insights on March weather, you can check Deer Isle weather in March.
When comparing the weather between October and April, some notable differences emerge. October tends to be milder, with temperatures ranging from a minimum of 2°C (35°F) to a maximum of 18°C (65°F) and an average of 12°C (54°F). In contrast, April experiences cooler temperatures, with a minimum of -3°C (27°F), an average of 5°C (41°F), and a maximum of 14°C (57°F). Precipitation levels are slightly higher in April, totaling 157 mm (6.2 in) over 13 days, compared to October's 145 mm (5.7 in) over 12 days. Humidity remains relatively consistent, with October at 82% and April slightly lower at 81%. For more detailed insights about the weather in April, you can visit this link: Deer Isle weather in April.
October and May present distinct weather profiles. In October, temperatures range from a minimum of 2°C (35°F) to a maximum of 18°C (65°F), with an average of 12°C (54°F). This month experiences a higher amount of precipitation at 145 mm (5.7 in) over 12 days and a humidity level of 82%. In contrast, May features slightly warmer conditions with temperatures ranging from a minimum of 2°C (37°F) to a maximum of 17°C (64°F) and an average of 9°C (49°F). Precipitation in May totals 105 mm (4.1 in) over 11 days, accompanied by lower humidity at 76%. For more detailed information, you can check Deer Isle weather in May.
When comparing the weather in October and June, it becomes clear that October brings cooler temperatures and higher precipitation. October sees a minimum temperature of 2°C (35°F), an average of 12°C (54°F), and a maximum of 18°C (65°F), with around 145 mm (5.7 in) of precipitation spread over 12 days and an average humidity of 82%. In contrast, June offers milder conditions, with temperatures ranging from a minimum of 8°C (46°F) to a maximum of 20°C (69°F), along with lower precipitation at 87 mm (3.4 in) over 9 days and a humidity level of 74%. For more detailed information about weather patterns in June, you can check Deer Isle weather in June.
October weather is notably cooler than July, with average temperatures ranging from a minimum of 2°C (35°F) to a maximum of 18°C (65°F), compared to July's warmer range of 12°C (54°F) to 22°C (72°F). Additionally, October experiences significantly more rainfall, with 145 mm (5.7 in) of precipitation over 12 days, while July sees just 92 mm (3.6 in) over 10 days. The humidity is also higher in October at 82%, compared to July's 74%. For more detailed information, you can check Deer Isle weather in July.
When comparing the weather in October to that of August, we see a notable shift in temperature and precipitation patterns. October experiences cooler conditions, with minimum temperatures dropping to around 2°C (35°F) and an average of 12°C (54°F), compared to August's milder minimum of 13°C (57°F) and an average of 18°C (64°F). The maximum temperatures in October also peak lower, reaching only 18°C (65°F), while August can warm up to 23°C (73°F). Additionally, October is significantly wetter, with 145 mm (5.7 in) of precipitation over 12 days, compared to August's 86 mm (3.4 in) over 8 days. The humidity in October is higher at 82%, compared to August's 74%. This contrast underscores the transition from summer warmth to the cooler, wetter conditions typical of autumn. For more details, check out Deer Isle weather in August.
In comparing the weather of October and September, October tends to be significantly cooler, with minimum temperatures dropping to 2°C (35°F) compared to September's milder 9°C (48°F). The average temperature in October is 12°C (54°F), while September's average is a comfortable 16°C (60°F). Additionally, October experiences increased precipitation, with 145 mm (5.7 in) over 12 days, versus September’s 102 mm (4.0 in) over just 8 days. Humidity also rises in October to 82%, slightly higher than September's 77%. For more detailed September weather information, you can visit Deer Isle weather in September.
October and November present a notable shift in weather patterns. In October, temperatures range from a minimum of 2°C (35°F) to a maximum of 18°C (65°F), with an average of 12°C (54°F) and a relatively high humidity of 82%. This month also experiences significant precipitation, totaling 145 mm (5.7 in) over 12 days. In contrast, November sees cooler temperatures with a minimum dipping to -11°C (13°F), an average of 6°C (43°F), and a maximum of 16°C (62°F). Although precipitation decreases slightly to 138 mm (5.4 in), the humidity rises to 85%, indicating a more damp and chilly climate. For more detailed information, you can visit Deer Isle weather in November.
In October, temperatures in Deer Isle typically range from a chilly 2°C (35°F) at night to a mild 18°C (65°F) during the day, with an average of 12°C (54°F). The month sees about 145 mm (5.7 in) of precipitation over 12 days, and the humidity sits at a high 82%. By December, temperatures drop significantly, with lows reaching as low as -17°C (2°F) and an average temperature of just 1°C (34°F). Despite the colder weather, December experiences a slightly higher total precipitation of 155 mm (6.1 in) over the same number of rainy days. The humidity rises slightly to 84%, making December a much chillier and wetter month than October. For more detailed information, check out Deer Isle weather in December.
October on Deer Isle presents a distinct shift in weather compared to the warmer months, with cooler temperatures dominating the landscape and an increase in rain. As the average temperature settles around a brisk 12°C (54°F), the vibrant fall foliage complements the moody skies, creating a picturesque yet_refreshing atmosphere. With 145 mm (5.7 in) of precipitation spread over 12 days, the month captures the essence of autumnal change, emphasizing the transition to winter's chill. The heightened humidity of 82% adds a crispness to the air, reminding visitors that this serene time of year is perfect for enjoying the seasonal beauty. For a deeper dive into the seasonal patterns and climate specifics, explore Deer Isle Climate.