Weather forecast for 10 days
Grand Isle, ME

Weather forecast for the weekend

Saturday, Jun 21.

Sunny
4:34 am

8:34 pm
EDT
Sunny
75°F / 48°F
  • Wind: 11mph NW
  • Humidity: 49%
  • Precip. probability: 4%
  • Precipitation: 0.2"
  • UV index: 8
On Saturday, in Grand Isle, sunny skies and pleasant visibility are expected.
Temperature changes will be remarkable, ranging from a high of a warm 75.2°F to a low of a brisk 48.2°F.
On Saturday, the expected high temperature is higher and fits better with July's average than with June's usual.
Sunrise will be at 4:34 am and sunset at 8:34 pm; the daylight will last for 16h and 1min.

Sunday, Jun 22.

AM Showers
4:34 am

8:34 pm
EDT
AM Showers
77°F / 55°F
  • Wind: 8mph SSE
  • Humidity: 67%
  • Precip. probability: 51%
  • Precipitation: 0.24"
  • UV index: 5
On Sunday, in Grand Isle, expect a few brief rain showers in the morning hours.
The chance of rainfall is high. However, precipitation will be light. The maximum temperature will be a warm 77°F, while the minimum anticipated temperature is a mild 55.4°F.
It will feel warmer, with a temperature more typical of July's average maximum of 74.3°F.
Sunrise will be at 4:34 am and sunset at 8:34 pm; the daylight will last for 16h and 0min.

Frequently asked questions

What is the weather forecast for Grand Isle for Saturday?
On Saturday, clear and sunny conditions are expected.
What will be the maximum temperature on Saturday?
On Saturday, the maximum temperature will be 75.2°F, while the minimum temperature will be 48.2°F.
What is the weather forecast for Grand Isle for Sunday?
On Sunday, scattered morning showers will bring brief periods of rain.
Will it rain on Sunday?
Light precipitation of 0.24" is anticipated on Sunday. The possibility of rainfall is 51%.
What will be the maximum temperature on Sunday?
On Sunday, the maximum temperature will be 77°F, while the minimum temperature will be 55.4°F.
What is the weather forecast for Grand Isle for the next ten days?
In Grand Isle, weather will be unstable, and a combination of cloud-filled, lightning-active, rain-filled and sun-filled weather is predicted for the next ten days.
Will it rain in the next ten days?
Rainfall is anticipated on Thursday, Friday, Sunday through Tuesday, next Friday and Saturday in Grand Isle. With moderate precipitation of 0.71", Friday will be the day with the most rainfall.
How hot will it be in the next ten days in Grand Isle?
The maximum temperature will vary between 68°F and 86°F, as the minimum temperature will range between 46.4°F and 69.8°F.
Combining with the humidity, the maximum feel-like temperature will range between 68°F and 93.2°F.
What will be the hottest and the coldest days?
With the maximum temperature of 86°F, Tuesday will be the hottest day. Tomorrow will be the coldest day, with a maximum temperature of 68°F.

Long-term weather forecast

ThuJun 19.
  • min.
  • 64°F
Thundershowers Late
Thundershowers Late
  • Wind: 6mph SSE
  • Humidity: 100%
  • UV index: 0
  • Precip. probability: 96%
  • Precipitation: 0.16"
  • 4:33 am 8:34 pm EDT
FriJun 20.
  • 68°F
  • 50°F
Thunderstorms
Thunderstorms
  • Wind: 13mph WSW
  • Humidity: 93%
  • UV index: 3
  • Precip. probability: 95%
  • Precipitation: 0.71"
  • 4:34 am 8:34 pm EDT
SatJun 21.
  • 75°F
  • 48°F
Sunny
Sunny
  • Wind: 11mph NW
  • Humidity: 49%
  • UV index: 8
  • Precip. probability: 4%
  • Precipitation: 0.2"
  • 4:34 am 8:34 pm EDT
SunJun 22.
  • 77°F
  • 55°F
AM Showers
AM Showers
  • Wind: 8mph SSE
  • Humidity: 67%
  • UV index: 5
  • Precip. probability: 51%
  • Precipitation: 0.24"
  • 4:34 am 8:34 pm EDT
MonJun 23.
  • 84°F
  • 70°F
Mostly Cloudy
Mostly Cloudy
  • Wind: 7mph SSW
  • Humidity: 68%
  • UV index: 6
  • Precip. probability: 24%
  • Precipitation: 0.04"
  • 4:34 am 8:34 pm EDT
TueJun 24.
  • 86°F
  • 54°F
Isolated Thunderstorms
Isolated Thunderstorms
  • Wind: 10mph W
  • Humidity: 66%
  • UV index: 7
  • Precip. probability: 32%
  • Precipitation: 0.04"
  • 4:35 am 8:35 pm EDT
WedJun 25.
  • 72°F
  • 46°F
Partly Cloudy
Partly Cloudy
  • Wind: 9mph NW
  • Humidity: 48%
  • UV index: 8
  • Precip. probability: 2%
  • Precipitation: 0"
  • 4:35 am 8:35 pm EDT
ThuJun 26.
  • 70°F
  • 48°F
Partly Cloudy
Partly Cloudy
  • Wind: 7mph NW
  • Humidity: 52%
  • UV index: 6
  • Precip. probability: 24%
  • Precipitation: 0"
  • 4:36 am 8:35 pm EDT
FriJun 27.
  • 73°F
  • 52°F
Cloudy
Cloudy
  • Wind: 6mph SSE
  • Humidity: 57%
  • UV index: 5
  • Precip. probability: 22%
  • Precipitation: 0.24"
  • 4:36 am 8:35 pm EDT
SatJun 28.
  • 73°F
  • 55°F
AM Showers
AM Showers
  • Wind: 7mph SSE
  • Humidity: 67%
  • UV index: 6
  • Precip. probability: 38%
  • Precipitation: 0.04"
  • 4:37 am 8:34 pm EDT
Over the course of the next ten days, expect shifting weather, and a mix of cloudy, lightning-active, damp and sun-filled weather is expected.
Rainfall is predicted for Thursday, Friday, Sunday through Tuesday, next Friday and Saturday.
Expect a substantial fluctuation in daytime highs in the next ten days. Maximum temperatures are forecasted between 68°F and 86°F, while the difference in minimum temperatures will be also substantial, as the overnight lows will vary from 46.4°F to 69.8°F.
With the highest temperature of 86°F, Tuesday will be the hottest day; Friday will be the coldest day, with the highest temperature of 68°F.
Combining with the humidity, the maximum feel-like temperature may increase and vary between 68°F and a tropical 93.2°F.
Updated: Jun 20, 2025 @ 03:53:55 UTC
Published by: Weather U.S. | About Us
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