Weather forecast for 10 daysGrand Isle, ME
Weather forecast for the weekend
Sunday Oct 18, 2026
- 48°F
- 34°F
Partly Cloudy
- Precip. probability: 1%
- Precipitation: 0"
- Wind: 5mphSW 231°
- Humidity: 48%
- UV index: 3
- Sunrise: 6:55 am EDT
- Sunset: 5:39 pm EDT
- details ▼
On Sunday, October 18, sun and clouds will share the sky, creating a partly cloudy day.
The maximum temperature will be a chilly 48.2°F, while the minimum expected temperature is an icy 33.8°F.
The predicted temperature peak will correspond with October's average maximum of 49.5°F.
Sunrise was at 6:55 am and sunset will be at 5:39 pm; the daylight will last for 10h and 44min.
The maximum temperature will be a chilly 48.2°F, while the minimum expected temperature is an icy 33.8°F.
The predicted temperature peak will correspond with October's average maximum of 49.5°F.
Sunrise was at 6:55 am and sunset will be at 5:39 pm; the daylight will last for 10h and 44min.
10-day overview
Daily temperatures
Warmest day: tomorrow 63°C.
Coldest day: Tuesday 27.10. 45°C.
Coldest day: Tuesday 27.10. 45°C.
Chance of precipitation
Highest chance: Tuesday 14%.
Long-term weather forecast
- Sunday
- Oct 18, 2026
- 48°F
- 34°F
Partly Cloudy
- Precip. probability: 1%
- Precipitation: 0"
- Wind: 5mphSW 231°
- Humidity: 48%
- UV index: 3
- Sunrise: 6:55 am EDT
- Sunset: 5:39 pm EDT
- details ▼
- Monday
- Oct 19, 2026
- 63°F
- 34°F
Sunny
- Precip. probability: 6%
- Precipitation: 0"
- Wind: 10mphSSW 193°
- Humidity: 61%
- UV index: 3
- Sunrise: 6:57 am EDT
- Sunset: 5:37 pm EDT
- details ▼
- Tuesday
- Oct 20, 2026
- 54°F
- 27°F
Partly Cloudy
- Precip. probability: 14%
- Precipitation: 0"
- Wind: 8mphNNW 335°
- Humidity: 68%
- UV index: 2
- Sunrise: 6:58 am EDT
- Sunset: 5:36 pm EDT
- details ▼
- Wednesday
- Oct 21, 2026
- 54°F
- 27°F
Sunny
- Precip. probability: 7%
- Precipitation: 0"
- Wind: 1mphNE 56°
- Humidity: 71%
- UV index: 3
- Sunrise: 7:00 am EDT
- Sunset: 5:34 pm EDT
- details ▼
- Thursday
- Oct 22, 2026
- 52°F
- 32°F
Partly Cloudy
- Precip. probability: 9%
- Precipitation: 0"
- Wind: 9mphWNW 296°
- Humidity: 73%
- UV index: 3
- Sunrise: 7:01 am EDT
- Sunset: 5:32 pm EDT
- details ▼
- Friday
- Oct 23, 2026
- 46°F
- 21°F
Partly Cloudy
- Precip. probability: 13%
- Precipitation: 0"
- Wind: 10mphN 359°
- Humidity: 64%
- UV index: 2
- Sunrise: 7:02 am EDT
- Sunset: 5:30 pm EDT
- details ▼
- Saturday
- Oct 24, 2026
- 52°F
- 25°F
Sunny
- Precip. probability: 7%
- Precipitation: 0"
- Wind: 6mphNW 321°
- Humidity: 61%
- UV index: 2
- Sunrise: 7:04 am EDT
- Sunset: 5:29 pm EDT
- details ▼
- Sunday
- Oct 25, 2026
- 57°F
- 34°F
Partly Cloudy
- Precip. probability: 13%
- Precipitation: 0"
- Wind: 7mphSW 235°
- Humidity: 63%
- UV index: 2
- Sunrise: 7:05 am EDT
- Sunset: 5:27 pm EDT
- details ▼
- Monday
- Oct 26, 2026
- 55°F
- 28°F
Partly Cloudy
- Precip. probability: 9%
- Precipitation: 0"
- Wind: 8mphWNW 291°
- Humidity: 64%
- UV index: 2
- Sunrise: 7:07 am EDT
- Sunset: 5:25 pm EDT
- details ▼
- Tuesday
- Oct 27, 2026
- 45°F
- 25°F
Mostly Cloudy
- Precip. probability: 9%
- Precipitation: 0"
- Wind: 9mphNW 318°
- Humidity: 63%
- UV index: 2
- Sunrise: 7:08 am EDT
- Sunset: 5:24 pm EDT
- details ▼
For the next ten days, a combination of cloud-filled and sun-filled weather is predicted.
Rainfall is not forecasted in Grand Isle in the upcoming days.
Significant changes in temperature are expected in the upcoming days. Forecast highs will fluctuate between 44.6°F and 62.6°F, while the nightly low temperatures will show also a considerable swing, as the overnight lows will vary from 21.2°F to 33.8°F.
Monday will be the warmest day, with a maximum temperature of 62.6°F; with the highest temperature of 44.6°F, next Tuesday will be the coldest day.
Rainfall is not forecasted in Grand Isle in the upcoming days.
Significant changes in temperature are expected in the upcoming days. Forecast highs will fluctuate between 44.6°F and 62.6°F, while the nightly low temperatures will show also a considerable swing, as the overnight lows will vary from 21.2°F to 33.8°F.
Monday will be the warmest day, with a maximum temperature of 62.6°F; with the highest temperature of 44.6°F, next Tuesday will be the coldest day.
Updated: Oct 18, 2026 @ 16:24:17 UTC
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate
Frequently asked questions
On Sunday, sunlight and clouds will take turns dominating the sky.
Today, the maximum temperature will be 48.2°F, while the minimum temperature will be 33.8°F.
The highest temperature will be in line with the average maximum of 49.5°F in October. The lowest temperature today will be also in line with the average low temperature.
The highest temperature will be in line with the average maximum of 49.5°F in October. The lowest temperature today will be also in line with the average low temperature.
On Sunday, in Grand Isle, sunrise was at 6:55 am and sunset will be at 5:39 pm (EDT).
In Grand Isle, the length of the day today will be 10h and 44min.
