How is the weather in Grand Isle, ME?

At 5:53 AM on Mon, Sep 15, 2025 it is mostly clear and 45 degrees Fahrenheit, feeling like 41 degrees.

Grand Isle, ME Weather Forecast and Current Conditions (04746)

45°F
Feels Like 41°F

Humidity 100% Dew Point 45°F Wind NW 7 MPH Barometer 30.24 in.768.1 mm

Solar Rad 0 w/m2 Visibility 8 mi.

Report from 7.1 miles WSW of central Grand Isle at 5:53 AM Mon, Sep 15, 2025

Current Weather

45°F
Feels Like 41°F

Humidity 100% Dew Point 45°F Wind NW 7 MPH Barometer 30.24 in.768.1 mm

Solar Rad 0 w/m2 Visibility 8 mi.

Report from 7.1 miles WSW of central Grand Isle at 5:53 AM Mon, Sep 15, 2025

Forecast at a Glance

MonSep 15

69°

44°

TueSep 16

74°

47°

WedSep 17

79°

51°

ThuSep 18

30%

79°

47°

FriSep 19

30%

59°

37°

SatSep 20

57°

34°

SunSep 21

64°

43°

This Date in Weather History

1939 - The temperature at Detroit MI soared to 100 degrees to establish a record for September.

Grand Isle 7 Day Weather Forecast Details

Monday Sep 15

Day: Patchy fog before 8am. Sunny, with a high near 69. Northwest wind around 6 mph.

Night: Patchy fog after 4am. Mostly clear, with a low around 44. Northwest wind around 5 mph.

Tuesday Sep 16

Day: Patchy fog before 9am. Sunny, with a high near 74. West wind around 5 mph.

Night: Patchy fog after midnight. Mostly clear, with a low around 47. Southwest wind around 2 mph.

Wednesday Sep 17

Day: Patchy fog before 9am. Sunny, with a high near 79. Southwest wind 1 to 6 mph.

Night: Patchy fog after 4am. Partly cloudy, with a low around 51. Southwest wind around 6 mph.

Thursday Sep 18

Day: Patchy fog before 7am, then a chance of rain showers. Partly sunny, with a high near 79. Southwest wind 3 to 10 mph. Chance of precipitation is 30%.

Night: A chance of rain showers. Mostly cloudy, with a low around 47. Chance of precipitation is 50%.

Friday Sep 19

Day: A chance of rain showers before 1pm. Mostly sunny, with a high near 59. Chance of precipitation is 30%.

Night: Mostly clear, with a low around 37.

Saturday Sep 20

Day: Sunny, with a high near 57.

Night: Mostly clear, with a low around 34.

Sunday Sep 21

Day: Mostly sunny, with a high near 64.

Night: Partly cloudy, with a low around 43.

Sun & Moon Monthly

First Light 5:40 AM

Sunrise 6:11 AM

Sunset 6:46 PM

Last Light 7:17 PM

Moonrise 11:46 PM

Moonset 4:00 PM

Moon Phase

Stadium Weather - Be Prepared for the Game

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