Weather forecast for 10 days
Southwest Harbor, ME

Weather forecast for the weekend

Saturday, May 3.

Rain
5:19 am

7:41 pm
EDT
Rain
52°F / 46°F
  • Wind: 7mph SE
  • Humidity: 91%
  • Precip. probability: 59%
  • Precipitation: 0.35"
  • UV index: 4
Today, prepare for a rain-soaked day, with showers expected to continue.
With a high probability, light precipitation is predicted. Temperature shifts will be modest, ranging from a peak of a crisp 51.8°F to a low of a chilly 46.4°F.
Today, climate comparisons show a temperature closer to April's 48.6°F than May's 58.6°F.
Sunrise was at 5:19 am and sunset will be at 7:41 pm; the daylight will last for 14h and 22min.

Sunday, May 4.

Showers
5:17 am

7:42 pm
EDT
Showers
54°F / 45°F
  • Wind: 4mph NNW
  • Humidity: 90%
  • Precip. probability: 50%
  • Precipitation: 0.08"
  • UV index: 3
On Sunday, in Southwest Harbor, showers are expected, with occasional breaks in the rain throughout the day.
Minimal precipitation is forecasted for tomorrow. A modest fluctuation in temperature is anticipated, achieving a maximum of a crisp 53.6°F and dipping to a minimum of a frosty 44.6°F.
Tomorrow, the forecasted high will be a couple of degrees lower than May's typical maximum of 58.6°F.
Sunrise will be at 5:17 am and sunset at 7:42 pm; tomorrow's daylight will last for 14h and 25min.

Frequently asked questions

What is the weather forecast for Southwest Harbor for tomorrow?
On Sunday, expect showers through the day, with the rain easing off by evening.
Will it rain tomorrow?
Tomorrow, there is a low chance of minimal precipitation in Southwest Harbor.
What will be the highest temperature tomorrow?
Tomorrow, the highest temperature will be 53.6°F, while the lowest temperature will be 44.6°F.
The maximum temperature will be slightly cooler than the average highest temperature of 58.6°F in May. Tomorrow, the lowest temperature will be in line with the average low temperature.
What time are sunrise and sunset tomorrow?
On Sunday, in Southwest Harbor, sunrise will be at 5:17 am and sunset at 7:42 pm (EDT).
How many hours of daylight will Southwest Harbor have tomorrow?
In Southwest Harbor, the length of the day tomorrow will be 14h and 25min.
What is the weather forecast for Southwest Harbor for the next ten days?
In Southwest Harbor, a combination of wet and cloudy weather is anticipated for the next ten days.
Will it rain in the next ten days?
Rainfall is forecasted for Saturday, Sunday, Tuesday through next Saturday in Southwest Harbor. With moderate precipitation of 0.63", Tuesday will be the day with the most rainfall.
How warm will it be in the next ten days?
The maximum temperature will range between 50°F and 55.4°F, while the minimum temperature will vary between 42.8°F and 46.4°F.
What will be the warmest and the coldest days in Southwest Harbor?
The warmest days will be Monday, Thursday, next Saturday and Monday, with a maximum of 55.4°F. With a maximum temperature of 50°F, Tuesday and Friday will be the coldest days.

Long-term weather forecast

SatMay 3.
  • 52°F
  • 46°F
Rain
Rain
  • Wind: 7mph SE
  • Humidity: 91%
  • UV index: 4
  • Precip. probability: 59%
  • Precipitation: 0.35"
  • 5:19 am 7:41 pm EDT
SunMay 4.
  • 54°F
  • 45°F
Showers
Showers
  • Wind: 4mph NNW
  • Humidity: 90%
  • UV index: 3
  • Precip. probability: 50%
  • Precipitation: 0.08"
  • 5:17 am 7:42 pm EDT
MonMay 5.
  • 55°F
  • 45°F
Cloudy
Cloudy
  • Wind: 14mph E
  • Humidity: 59%
  • UV index: 5
  • Precip. probability: 2%
  • Precipitation: 0.04"
  • 5:16 am 7:43 pm EDT
TueMay 6.
  • 50°F
  • 46°F
Showers
Showers
  • Wind: 12mph ESE
  • Humidity: 92%
  • UV index: 3
  • Precip. probability: 70%
  • Precipitation: 0.63"
  • 5:14 am 7:44 pm EDT
WedMay 7.
  • 52°F
  • 46°F
AM Rain
AM Rain
  • Wind: 11mph S
  • Humidity: 95%
  • UV index: 3
  • Precip. probability: 78%
  • Precipitation: 0.16"
  • 5:13 am 7:46 pm EDT
ThuMay 8.
  • 55°F
  • 43°F
Mostly Cloudy
Mostly Cloudy
  • Wind: 10mph NW
  • Humidity: 79%
  • UV index: 4
  • Precip. probability: 24%
  • Precipitation: 0.08"
  • 5:12 am 7:47 pm EDT
FriMay 9.
  • 50°F
  • 43°F
PM Showers
PM Showers
  • Wind: 12mph NNE
  • Humidity: 73%
  • UV index: 4
  • Precip. probability: 32%
  • Precipitation: 0.24"
  • 5:11 am 7:48 pm EDT
SatMay 10.
  • 55°F
  • 45°F
AM Showers
AM Showers
  • Wind: 14mph WNW
  • Humidity: 70%
  • UV index: 6
  • Precip. probability: 45%
  • Precipitation: 0.04"
  • 5:09 am 7:49 pm EDT
SunMay 11.
  • 54°F
  • 45°F
Partly Cloudy
Partly Cloudy
  • Wind: 12mph W
  • Humidity: 72%
  • UV index: 7
  • Precip. probability: 17%
  • Precipitation: 0"
  • 5:08 am 7:50 pm EDT
MonMay 12.
  • 55°F
  • 45°F
Partly Cloudy
Partly Cloudy
  • Wind: 12mph W
  • Humidity: 63%
  • UV index: 6
  • Precip. probability: 21%
  • Precipitation: 0"
  • 5:07 am 7:51 pm EDT
Throughout the next ten days, a combination of wet and cloud-filled weather is forecasted.
Rainfall is expected on Saturday, Sunday, Tuesday through next Saturday.
The high temperatures are expected to remain largely stable in the upcoming days. Maximum temperatures will fall between 50°F and 55.4°F, while fluctuations in the night’s lowest temperature will be also minimal, as the overnight low will fall between 42.8°F and 46.4°F.
With a maximum temperature of 55.4°F, Monday, Thursday, next Saturday and Monday will be the warmest days in Southwest Harbor; Tuesday and Friday, with the highest temperature of 50°F, will be the coldest days in Southwest Harbor.
Updated: May 3, 2025 @ 13:13:01 UTC
Published by: Weather U.S. | About Us
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Weather Forecasting & Climate
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