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Contents
- Weather in January
- Weather in February
- Weather in March
- Weather in April
- Weather in May
- Weather in June
- Weather in July
- Weather in August
- Weather in September
- Weather in October
- Weather in November
- Weather in December
- Frequently asked questions
- Average temperature
- Average pressure
- Average wind speed
- Average humidity
- Average rainfall
- Average rainfall days
- Average snowfall
- Average snowfall days
- Average daylight
- Average sunshine
- Average sunshine days
- Average UV index
- Average cloud cover
- Average visibility
Weather in January
January, like December, is another subzero cold winter month in Islesboro, Maine, with temperature in the range of an average high of 28.4°F (-2°C) and an average low of 16.2°F (-8.8°C). January, noted for its average high-temperature of 28.4°F (-2°C) and an average low-temperature of 16.2°F (-8.8°C), is considered the coldest month. Weather in January »
Weather in February
February, the last month of the winter in Islesboro, is another freezing cold month, with an average temperature ranging between max 29.8°F (-1.2°C) and min 17.4°F (-8.1°C). The ushering in of February brings an average high-temperature of a still subzero cold 29.8°F (-1.2°C), closely mirroring the 28.4°F (-2°C) of January. Weather in February »
Weather in March
March, the first month of the spring in Islesboro, is a cold month, with temperature in the range of an average low of 24.3°F (-4.3°C) and an average high of 37°F (2.8°C). March signals a minor shift in the average high-temperature, moving from February's freezing cold 29.8°F (-1.2°C) to an icy 37°F (2.8°C). Weather in March »
Weather in April
April is a frosty spring month in Islesboro, Maine, with temperature in the range of an average high of 48.9°F (9.4°C) and an average low of 34.5°F (1.4°C). With the transition into April, Islesboro experiences an increase in average high-temperatures, moving up from a wintry 37°F (2.8°C) in March to a chilly 48.9°F (9.4°C). Weather in April »
Weather in May
The last month of the spring, May, is a mild month in Islesboro, Maine, with an average temperature fluctuating between 43.9°F (6.6°C) and 59.7°F (15.4°C). As Islesboro transitions into May, the average high-temperature shows a change, moving from a chilly 48.9°F (9.4°C) in April to a mild 59.7°F (15.4°C). Weather in May »
Weather in June
June, the first month of the summer in Islesboro, is an enjoyable month, with an average temperature fluctuating between 50.7°F (10.4°C) and 66.7°F (19.3°C). June witnesses a minor rise in the average high-temperature, transitioning from a refreshing 59.7°F (15.4°C) in May to a comfortable 66.7°F (19.3°C). Weather in June »
Weather in July
July in Islesboro, Maine, is a warm summer month, with an average temperature fluctuating between 73.9°F (23.3°C) and 57.7°F (14.3°C). In Islesboro, the months of July and August are known for the peak temperatures, reaching an average high of 73.9°F (23.3°C). Weather in July »
Weather in August
The last month of the summer, August, is also a moderately hot month in Islesboro, Maine, with temperature in the range of an average low of 56.8°F (13.8°C) and an average high of 73.9°F (23.3°C). July and August, with an average high-temperature of 73.9°F (23.3°C), are marked as the warmest months. Weather in August »
Weather in September
The first month of the autumn, September, is still a refreshing month in Islesboro, Maine, with an average temperature ranging between max 67.1°F (19.5°C) and min 51.1°F (10.6°C). A subtle shift in Islesboro's weather is observed as August turns into September, with the average high temperature reducing from a moderately hot 73.9°F (23.3°C) to a comfortable 67.1°F (19.5°C). Weather in September »
Weather in October
October, like September, is a moderate autumn month in Islesboro, Maine, with an average temperature ranging between min 43.2°F (6.2°C) and max 55.8°F (13.2°C). Transition from September to October is accompanied by a temperature drop, with average high-temperatures decreasing from an enjoyable 67.1°F (19.5°C) to a moderate 55.8°F (13.2°C). Weather in October »
Weather in November
November, the last month of the autumn in Islesboro, is also a frosty month, with temperature in the range of an average low of 32.7°F (0.4°C) and an average high of 44.1°F (6.7°C). Setting in of November comes with a decrease in the average high-temperature, moving from a refreshing 55.8°F (13.2°C) in October to a chilly 44.1°F (6.7°C). Weather in November »
Weather in December
December, the first month of the winter in Islesboro, is still a cold month, with an average temperature fluctuating between 24.1°F (-4.4°C) and 34.2°F (1.2°C). Islesboro's December weather features a mild decline in high-temperatures, reducing from a chilly 44.1°F (6.7°C) in November to an icy 34.2°F (1.2°C). Weather in December »
Updated: Jul 6, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What time of the year is the coldest?
January, on average, is the coldest month, registering a high temperature of 28.4°F (-2°C) and a low of 16.2°F (-8.8°C).
How many days does it rain?
Throughout the year, there are 141.1 rainfall days, and 24.29" (617mm) of precipitation is accumulated.
When does it snow?
January through May, October through December are months with snowfall.
What is the snowiest month?
The month with the most snowfall is January, when snow falls for 10.1 days and typically aggregates up to 4.57" (116mm) of snow.
How much does it snow?
Throughout the year, there are 44.3 snowfall days, and 16.81" (427mm) of snow is accumulated.
What is the month with the lowest UV index in Islesboro?
January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index.
What are the most humid months?
February and July, with an average relative humidity of 83%, are most humid months.
What is the month with the least sunshine?
The month with the least sunshine is February, with an average of 4.3h of sunshine.
When is Daylight Saving Time (DST)?
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, and the time zone changes from EST to EDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from EDT to EST.
When it does not snow?
June through September are months without snowfall.
When are the longest days?
The month with the longest days is June, with an average of 15h and 30min of daylight.
What is the month with the highest UV index?
The months with the highest UV index are June through August, with an average maximum UV index of 5.
What part of the year is the hottest in Islesboro?
In Islesboro, the months of July and August are known for the peak temperatures, reaching an average high of 73.9°F (23.3°C).
What is the driest month?
The months with the least rainfall are July and September Rain falls for 14.5 days and accumulates 1.46" (37mm) of rain.
What month has the most sunshine?
August has the most sunshine of the year, with an average of 9.9h of sunshine.
What is the least humid month?
The least humid month is November, with an average relative humidity of 77%.
What is the wettest month in Islesboro?
December is the month with the most rainfall. Rain falls for 10.1 days and accumulates 2.72" (69mm) of precipitation.
What is the month with the shortest days?
December has the shortest days of the year, with an average of 8h and 54min of daylight.
Average temperature
Islesboro, ME
The warmest months (with the highest average high temperature) are July and August (73.9°F).
The month with the lowest average high temperature is January (28.4°F).
The month with the highest average low temperature is July (57.7°F).
The coldest month (with the lowest average low temperature) is January (16.2°F).
Average pressure
Islesboro, ME
- Average pressure in January:
29.96"Hg - Average pressure in February:
29.95"Hg - Average pressure in March:
30"Hg - Average pressure in April:
29.95"Hg - Average pressure in May:
29.99"Hg - Average pressure in June:
29.91"Hg
- Average pressure in July:
29.93"Hg - Average pressure in August:
29.96"Hg - Average pressure in September:
30.04"Hg - Average pressure in October:
29.99"Hg - Average pressure in November:
30.03"Hg - Average pressure in December:
30"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
Islesboro, ME
- Average wind speed in January:
9.9mph - Average wind speed in February:
10mph - Average wind speed in March:
10.1mph - Average wind speed in April:
9.1mph - Average wind speed in May:
7.6mph - Average wind speed in June:
7mph
- Average wind speed in July:
6mph - Average wind speed in August:
6mph - Average wind speed in September:
6.8mph - Average wind speed in October:
8.5mph - Average wind speed in November:
9.1mph - Average wind speed in December:
9.6mph
The windiest month (with the highest average wind speed) is March (10.1mph).
The calmest months (with the lowest average wind speed) are July and August (6mph).
Average humidity
Islesboro, ME
The months with the highest relative humidity are February and July (83%).
The month with the lowest relative humidity is November (77%).
Average rainfall
Islesboro, ME
- Average rainfall in January:
1.93" - Average rainfall in February:
1.65" - Average rainfall in March:
1.57" - Average rainfall in April:
2.64" - Average rainfall in May:
2.05" - Average rainfall in June:
2.09"
- Average rainfall in July:
1.46" - Average rainfall in August:
1.85" - Average rainfall in September:
1.46" - Average rainfall in October:
2.56" - Average rainfall in November:
2.32" - Average rainfall in December:
2.72"
The wettest month (with the highest rainfall) is December (2.72").
The driest months (with the least rainfall) are July and September (1.46").
Average rainfall days
Islesboro, ME
- Average rainfall days in January:
7.3 days - Average rainfall days in February:
7.1 days - Average rainfall days in March:
10.1 days - Average rainfall days in April:
15 days - Average rainfall days in May:
15.3 days - Average rainfall days in June:
14.8 days
- Average rainfall days in July:
14.5 days - Average rainfall days in August:
13 days - Average rainfall days in September:
10.2 days - Average rainfall days in October:
13.3 days - Average rainfall days in November:
10.4 days - Average rainfall days in December:
10.1 days
The month with the highest number of rainy days is May (15.3 days).
The month with the least rainy days is February (7.1 days).
Average snowfall
Islesboro, ME
- Average snowfall in January:
4.57" - Average snowfall in February:
3.58" - Average snowfall in March:
2.76" - Average snowfall in April:
2.17" - Average snowfall in May:
0.35" - Average snowfall in June:
0"
The month with the highest snowfall is January (4.57").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days
Islesboro, ME
- Average snowfall days in January:
10.1 days - Average snowfall days in February:
10 days - Average snowfall days in March:
9 days - Average snowfall days in April:
2.9 days - Average snowfall days in May:
0.1 days - Average snowfall days in June:
0 days
- Average snowfall days in July:
0 days - Average snowfall days in August:
0 days - Average snowfall days in September:
0 days - Average snowfall days in October:
0.1 days - Average snowfall days in November:
3.2 days - Average snowfall days in December:
8.9 days
The month with the highest number of snowfall days is January (10.1 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
Islesboro, ME
- Average daylight in January:
9h and 2min - Average daylight in February:
10h and 3min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 3min - Average daylight in May:
14h and 5min - Average daylight in June:
15h and 3min
- Average daylight in July:
15h and 1min - Average daylight in August:
14h and 0min - Average daylight in September:
12h and 3min - Average daylight in October:
11h and 0min - Average daylight in November:
9h and 4min - Average daylight in December:
8h and 5min
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 January:
4h and 4min - Average sunshine in February:
4h and 2min - Average sunshine in March:
5h and 1min - Average sunshine in April:
7h and 1min - Average sunshine in May:
7h and 4min - Average sunshine in June:
8h and 2min
- Average sunshine in July:
9h and 2min - Average sunshine in August:
9h and 5min - Average sunshine in September:
8h and 1min - Average sunshine in October:
6h and 0min - Average sunshine in November:
5h and 0min - Average sunshine in December:
4h and 2min
The month with the most sunshine is August (Average sunshine: 9h and 54min).
The month with the least sunshine is February (Average sunshine: 4h and 18min).
Average sunshine days
Islesboro, ME
- Average sunshine days in January:
16.9 days - Average sunshine days in February:
13.3 days - Average sunshine days in March:
14.5 days - Average sunshine days in April:
11.7 days - Average sunshine days in May:
13.7 days - Average sunshine days in June:
13.6 days
- Average sunshine days in July:
14.7 days - Average sunshine days in August:
15.8 days - Average sunshine days in September:
17.9 days - Average sunshine days in October:
16.1 days - Average sunshine days in November:
16.6 days - Average sunshine days in December:
14.5 days
The month with the most sunshine days is September (17.9 days).
The month with the least sunshine days is April (11.7 days).
Average UV index
Islesboro, ME
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
Islesboro, ME
The month with the most cloud cover is March (Cloud cover 55).
The months with the least cloud cover are August and September (Cloud cover 37).
Average visibility
Islesboro, ME
The months with the highest visibility are January, February, March, April, October, November and December (6mi).
The months with the lowest visibility are May, June, July, August and September (5mi).
Islesboro, Maine, USA
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