44.2811’ N, 68.9428’ W

Islesboro, ME

49°
H 56°
L 38°
N
15mph
Low tide
2:41 pm

Islesboro, ME Weather Forecast and Current Conditions

Day Sky High / Low Precip Wind Humidity
Thu
Oct 22
Mostly Cloudy
Close Hourly
56º / 38º 1% N 17 mph 61%
10am Mostly Sunny 49º 1% N 15 mph 73%
11am Partly Cloudy 50º 1% N 15 mph 67%
12pm Partly Cloudy 52º 0% N 16 mph 61%
1pm Cloudy 52º 0% N 17 mph 57%
2pm Cloudy 54º 0% N 17 mph 54%
3pm Mostly Cloudy 55º 1% N 16 mph 55%
4pm Partly Cloudy 56º 1% N 16 mph 59%
5pm Partly Cloudy 55º 1% N 15 mph 60%
6pm Partly Cloudy 53º 2% N 14 mph 63%
7pm Partly Cloudy 52º 2% N 15 mph 65%
8pm Partly Cloudy 51º 1% N 17 mph 63%
9pm Mostly Clear 48º 1% N 19 mph 63%
10pm Clear 47º 1% N 19 mph 63%
11pm Clear 46º 1% N 19 mph 63%
Fri
Oct 23
Sunny
View Hourly
52º / 34º 1% N 18 mph 54%
12am Clear 45º 1% N 18 mph 62%
1am Clear 44º 1% N 17 mph 62%
2am Clear 43º 1% N 18 mph 62%
3am Clear 43º 1% N 17 mph 62%
4am Clear 41º 1% N 18 mph 63%
5am Clear 41º 1% N 17 mph 64%
6am Clear 39º 1% N 17 mph 66%
7am Clear 39º 2% N 16 mph 68%
8am Sunny 40º 2% N 16 mph 68%
9am Sunny 42º 1% N 18 mph 65%
10am Sunny 43º 1% N 18 mph 62%
11am Sunny 45º 0% N 17 mph 57%
12pm Sunny 47º 0% N 17 mph 53%
1pm Sunny 48º 0% N 16 mph 49%
2pm Sunny 50º 0% N 16 mph 46%
3pm Sunny 51º 0% N 14 mph 44%
4pm Sunny 50º 0% N 14 mph 44%
5pm Sunny 50º 0% N 11 mph 46%
6pm Clear 48º 0% N 8 mph 50%
7pm Clear 45º 0% N 7 mph 57%
8pm Clear 44º 1% N 6 mph 63%
9pm Clear 42º 1% N 7 mph 67%
10pm Clear 41º 1% N 6 mph 69%
11pm Clear 40º 1% N 6 mph 72%
Sat
Oct 24
Sunny
View Hourly
57º / 37º 4% NW 7 mph 56%
12am Clear 39º 2% N 6 mph 73%
1am Clear 37º 3% NNW 5 mph 76%
2am Clear 37º 3% NNW 6 mph 76%
3am Clear 36º 3% NNW 6 mph 77%
4am Clear 36º 3% NNW 6 mph 76%
5am Clear 35º 3% NNW 5 mph 77%
6am Clear 35º 3% NNW 5 mph 79%
7am Clear 35º 4% NNW 5 mph 80%
8am Sunny 37º 3% NNW 5 mph 77%
9am Sunny 41º 2% NNW 6 mph 70%
Sun
Oct 25
Sunny 59º / 42º 3% WSW 8 mph 62%
Mon
Oct 26
Partly Cloudy 63º / 39º 4% W 7 mph 64%
Tue
Oct 27
Sunny 50º / 34º 2% N 11 mph 51%
Wed
Oct 28
Partly Cloudy 50º / 41º 2% WSW 7 mph 57%
Thu
Oct 29
Partly Cloudy 56º / 46º 6% SSW 11 mph 72%

Weather Radar for Islesboro, ME See Radar

* Playback displays weather for the past 6 hours.

NOAA Weather Marine Forecast for Islesboro, ME

Today
High : 57ºF
N wind 10 to 15 kt, with gusts as high as 25 kt. Mostly cloudy. Seas 1 ft or less.
Tonight
Low : 36ºF
N wind 15 to 20 kt, with gusts as high as 30 kt. Mostly clear. Seas 1 ft or less.
Friday
High : 50ºF
N wind 10 to 15 kt, with gusts as high as 25 kt. Sunny. Seas 1 ft or less.
Friday Night
Low : 32ºF
Variable winds 5 kt or less. Clear. Seas 1 ft or less.
Saturday
High : 54ºF
Variable winds 5 kt or less. Sunny. Seas 1 ft or less.
Saturday Night
Low : 35ºF
Variable winds 5 kt or less. Clear. Seas 1 ft or less.
Sunday
High : 57ºF
Variable winds 5 kt or less. Sunny. Seas 1 ft or less.
Sunday Night
Low : 40ºF
Variable winds 5 kt or less. Mostly clear. Seas 1 ft or less.
Monday
High : 59ºF
Variable winds 5 kt or less. Sunny. Seas 1 ft or less.

NOAA Buoy Data Near Islesboro, ME See Map

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    Wind Speed Forecast for Islesboro, ME

    ThursdayFridaySaturday
    Wind Speed (MPH) 15171419181718168665
    2pm6pm10pm2am6am10am2pm6pm10pm2am6am10am
    MPH 15171419181718168665
    DIR NNNNNNNNNNNNWNNW

    Current Weather Conditions In Islesboro, ME

    As Of: 9 minutes ago

    • 49ºF
    • 43ºF
    • 15mph
    • 0º (N)
    • 23mph
    • Mostly Sunny
    • 10mi
    • 29.99"
    • 73%
    • 0ºF

    The weather right now in Islesboro, ME is Mostly Sunny. The current temperature is 49°F, and the expected high and low for today, Thursday, October 22, 2026, are 56° high temperature and 38°F low temperature. The wind is currently blowing at 15 miles per hour, and coming from the North. The wind is gusting to 23 mph. With the wind and the atmosphere the temperature feels like 43° Fahrenheit. Expected precipitation is 1 percent, with current humidity at 73 percent, and air pressure at 29.99 in. Visibility is 10 nautical miles. There are 1 current weather alert(s).

    Weather Alerts
    Small Craft Advisory - 2:37am Thu Oct 22 2026

    ...SMALL CRAFT ADVISORY NOW IN EFFECT FROM 6 PM THIS EVENING TO 2 PM EDT FRIDAY...

    WHAT: North winds 15 to 20 kt with gusts up to 30 kt and seas
    2 to 5 ft expected.

    WHERE: Penobscot Bay and Casco Bay.

    WHEN: From 6 PM this evening to 2 PM EDT Friday.

    IMPACTS: Conditions will be hazardous to small craft.

    PRECAUTIONARY / PREPAREDNESS ACTIONS:

    Inexperienced mariners, especially those operating smaller
    vessels, should avoid navigating in hazardous conditions.

    &&