Weather forecast for 10 daysGrand Isle, ME
Weather forecast for the weekend
Sunday Oct 18, 2026
- 50°F
- 34°F
Partly Cloudy
- Precip. probability: 2%
- Precipitation: 0"
- Wind: 5mphWSW 242°
- Humidity: 64%
- UV index: 3
- Sunrise: 6:55 am EDT
- Sunset: 5:39 pm EDT
- details ▼
On Sunday, October 18, patchy clouds will move across the sky, allowing for sunshine at times.
The maximum temperature will be a fresh 50°F, while the minimum predicted temperature is a cold 33.8°F.
Expect the maximum temperature to remain consistent with the typical October high of 49.5°F.
Sunrise will be at 6:55 am and sunset at 5:39 pm; the daylight will last for 10h and 44min.
The maximum temperature will be a fresh 50°F, while the minimum predicted temperature is a cold 33.8°F.
Expect the maximum temperature to remain consistent with the typical October high of 49.5°F.
Sunrise will be at 6:55 am and sunset at 5:39 pm; the daylight will last for 10h and 44min.
10-day overview
Daily temperatures
Warmest day: tomorrow 63°C.
Coldest day: Friday 46°C.
Coldest day: Friday 46°C.
Chance of precipitation
Highest chance: Tuesday 27.10. 14%.
Long-term weather forecast
- Sunday
- Oct 18, 2026
- 50°F
- 34°F
Partly Cloudy
- Precip. probability: 2%
- Precipitation: 0"
- Wind: 5mphWSW 242°
- Humidity: 64%
- 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 194°
- Humidity: 61%
- UV index: 3
- Sunrise: 6:57 am EDT
- Sunset: 5:37 pm EDT
- details ▼
- Tuesday
- Oct 20, 2026
- 54°F
- 27°F
Mostly Sunny
- Precip. probability: 8%
- Precipitation: 0"
- Wind: 8mphNNW 335°
- Humidity: 67%
- UV index: 3
- 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: 1mphENE 63°
- Humidity: 70%
- UV index: 3
- Sunrise: 7:00 am EDT
- Sunset: 5:34 pm EDT
- details ▼
- Thursday
- Oct 22, 2026
- 54°F
- 30°F
Mostly Sunny
- Precip. probability: 9%
- Precipitation: 0"
- Wind: 9mphWNW 295°
- Humidity: 72%
- 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: 12%
- Precipitation: 0"
- Wind: 9mphN 357°
- Humidity: 61%
- 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: 10%
- Precipitation: 0"
- Wind: 6mphNW 311°
- Humidity: 62%
- UV index: 2
- Sunrise: 7:04 am EDT
- Sunset: 5:29 pm EDT
- details ▼
- Sunday
- Oct 25, 2026
- 59°F
- 36°F
Partly Cloudy
- Precip. probability: 6%
- Precipitation: 0"
- Wind: 6mphWSW 243°
- Humidity: 62%
- UV index: 2
- Sunrise: 7:05 am EDT
- Sunset: 5:27 pm EDT
- details ▼
- Monday
- Oct 26, 2026
- 55°F
- 32°F
Partly Cloudy
- Precip. probability: 13%
- Precipitation: 0"
- Wind: 7mphWNW 291°
- Humidity: 65%
- UV index: 2
- Sunrise: 7:07 am EDT
- Sunset: 5:25 pm EDT
- details ▼
- Tuesday
- Oct 27, 2026
- 48°F
- 27°F
Mostly Cloudy
- Precip. probability: 14%
- Precipitation: 0"
- Wind: 8mphNW 324°
- Humidity: 67%
- UV index: 2
- Sunrise: 7:08 am EDT
- Sunset: 5:24 pm EDT
- details ▼
Forecasts for the ten-day outlook show that a combination of gloomy and clear weather is expected.
Rainfall is not anticipated in Grand Isle in the upcoming days.
There will be a considerable variation in temperature in the coming days. Highs will range from 46.4°F to 62.6°F, while the difference in minimum temperatures will be also substantial, as the lowest temperatures will be recorded between 21.2°F and 35.6°F.
Monday will be the warmest day, with a maximum temperature of 62.6°F; expect the coldest day on Friday with a high of 46.4°F.
Rainfall is not anticipated in Grand Isle in the upcoming days.
There will be a considerable variation in temperature in the coming days. Highs will range from 46.4°F to 62.6°F, while the difference in minimum temperatures will be also substantial, as the lowest temperatures will be recorded between 21.2°F and 35.6°F.
Monday will be the warmest day, with a maximum temperature of 62.6°F; expect the coldest day on Friday with a high of 46.4°F.
Updated: Oct 18, 2026 @ 10:29:26 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
Today, a pleasant mix of sun and clouds will define the day.
Today, the maximum temperature will be 50°F, while the minimum temperature will be 33.8°F.
Today, the maximum temperature will be in line with the average highest temperature in October. The lowest temperature today will be also in line with the average low temperature.
Today, the maximum temperature will be in line with the average highest temperature in October. The lowest temperature today will be also in line with the average low temperature.
On Sunday, in Grand Isle, sunrise will be at 6:55 am and sunset at 5:39 pm (EDT).
In Grand Isle, the length of the day today will be 10h and 44min.
