Islesboro, ME Weather Forecast and Current Conditions

Day Sky High / Low Precip Wind Humidity
Fri
Jun 19
Partly Cloudy
Close Hourly
70º / 57º 7% WSW 14 mph 73%
6am Sunny 61º 2% WSW 10 mph 88%
7am Sunny 62º 2% WSW 10 mph 88%
8am Sunny 63º 2% WSW 11 mph 84%
9am Mostly Sunny 64º 2% WSW 13 mph 77%
10am Partly Cloudy 66º 2% WSW 13 mph 72%
11am Partly Cloudy 68º 4% WSW 13 mph 67%
12pm Partly Cloudy 67º 2% WSW 14 mph 69%
1pm Mostly Cloudy 69º 5% WSW 13 mph 65%
2pm Mostly Cloudy 68º 1% WSW 13 mph 67%
3pm Mostly Cloudy 69º 7% WSW 13 mph 64%
4pm Partly Cloudy 69º 8% WSW 13 mph 65%
5pm Partly Cloudy 69º 6% WSW 12 mph 64%
6pm Partly Cloudy 69º 3% WSW 10 mph 64%
7pm Partly Cloudy 68º 2% WSW 10 mph 67%
8pm Partly Cloudy 66º 3% WSW 9 mph 72%
9pm Mostly Clear 64º 9% W 8 mph 74%
10pm Partly Cloudy 64º 12% W 8 mph 73%
11pm Partly Cloudy 63º 4% W 9 mph 78%
Sat
Jun 20
Cloudy
View Hourly
66º / 54º 24% NW 15 mph 69%
12am Mostly Clear 62º 4% W 8 mph 79%
1am Mostly Clear 61º 4% W 9 mph 81%
2am Partly Cloudy 60º 14% W 8 mph 83%
3am Partly Cloudy 59º 17% W 9 mph 83%
4am Mostly Cloudy 58º 7% W 8 mph 85%
5am Partly Cloudy 58º 11% W 8 mph 85%
6am Mostly Cloudy 58º 9% W 9 mph 86%
7am Cloudy 59º 11% W 10 mph 85%
8am Mostly Cloudy 61º 11% WNW 11 mph 80%
9am Cloudy 62º 24% WNW 13 mph 75%
10am Cloudy 62º 10% WNW 13 mph 76%
11am Cloudy 63º 7% NW 14 mph 71%
12pm Cloudy 64º 6% NW 15 mph 68%
1pm Cloudy 65º 7% NW 15 mph 65%
2pm Cloudy 65º 4% NW 15 mph 63%
3pm Cloudy 66º 2% NW 15 mph 62%
4pm Mostly Cloudy 66º 1% NW 15 mph 62%
5pm Mostly Cloudy 66º 3% NW 13 mph 62%
6pm Partly Cloudy 66º 2% NW 11 mph 62%
7pm Partly Cloudy 65º 2% NW 9 mph 65%
8pm Partly Cloudy 64º 3% NW 6 mph 69%
9pm Mostly Cloudy 62º 4% WNW 6 mph 74%
10pm Mostly Cloudy 61º 4% NW 6 mph 76%
11pm Mostly Cloudy 61º 4% WNW 6 mph 79%
Sun
Jun 21
PM Thunderstorms
View Hourly
65º / 53º 57% SW 9 mph 79%
12am Mostly Cloudy 60º 4% WNW 6 mph 81%
1am Cloudy 59º 5% WNW 6 mph 83%
2am Mostly Cloudy 58º 6% WNW 7 mph 86%
3am Mostly Cloudy 57º 5% WNW 6 mph 88%
4am Mostly Cloudy 56º 7% WNW 5 mph 90%
5am Cloudy 55º 22% WNW 4 mph 94%
Mon
Jun 22
PM Showers 63º / 55º 61% SE 9 mph 89%
Tue
Jun 23
Rain 69º / 56º 63% N 10 mph 83%
Wed
Jun 24
Partly Cloudy 71º / 56º 11% WSW 9 mph 71%
Thu
Jun 25
Partly Cloudy 67º / 56º 24% SE 9 mph 75%
Fri
Jun 26
AM Showers 66º / 55º 33% SE 9 mph 84%

Weather Radar for Islesboro, ME See Radar

* Playback displays weather for the past 6 hours.

NOAA Weather Marine Forecast for Islesboro, ME

Juneteenth
High : 72ºF
WSW wind around 10 kt, with gusts as high as 25 kt. Sunny. Seas 1 ft or less.
Tonight
Low : 56ºF
Variable winds 5 kt or less. Mostly clear. Seas 1 ft or less.
Saturday
High : 69ºF
W wind around 10 kt becoming NW in the afternoon. A slight chance of showers, mainly between 2pm and 3pm. Seas 1 ft or less.
Saturday Night
Low : 52ºF
Variable winds 5 kt or less. Mostly cloudy. Seas 1 ft or less.
Sunday
High : 68ºF
Variable winds 5 kt or less. A chance of showers after 2pm. Seas 1 ft or less.
Sunday Night
Low : 53ºF
Variable winds 5 kt or less. A chance of showers before 8pm. Seas 1 ft or less.
Monday
High : 67ºF
Variable winds 5 kt or less. A chance of showers after 2pm. Seas 1 ft or less.
Monday Night
Low : 54ºF
SSE wind 5 to 10 kt becoming E after midnight. Showers. Seas 1 ft or less.
Tuesday
High : 71ºF
E wind 5 to 10 kt becoming WNW in the afternoon. Showers likely. Seas 1 ft or less.

NOAA Buoy Data Near Islesboro, ME See Map

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    Wind Speed Forecast for Islesboro, ME

    FridaySaturdaySunday
    Wind Speed (MPH) 1013131088913151167
    10am2pm6pm10pm2am6am10am2pm6pm10pm2am6am
    MPH 1013131088913151167
    DIR WSWWSWWSWWSWWWWWNWNWNWNWWNW

    Current Weather Conditions In Islesboro, ME

    As Of: 18 minutes ago

    • 61ºF
    • 60ºF
    • 10mph
    • 0º (WSW)
    • 10mph
    • Sunny
    • 9mi
    • 29.40"
    • 88%
    • 0ºF

    The weather right now in Islesboro, ME is Sunny. The current temperature is 61°F, and the expected high and low for today, Friday, June 19, 2026, are 70° high temperature and 57°F low temperature. The wind is currently blowing at 10 miles per hour, and coming from the West Southwest. The wind is gusting to 10 mph. With the wind and the atmosphere the temperature feels like 60° Fahrenheit. Expected precipitation is 2 percent, with current humidity at 88 percent, and air pressure at 29.4 in. Visibility is 9 nautical miles. There are 1 current weather alert(s).

    Weather Alerts
    Small Craft Advisory - 2:31am Fri Jun 19 2026

    ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL NOON EDT TODAY...

    WHAT: Southwest winds 10 to 20 kt with gusts up to 25 kt and
    seas 3 to 5 ft.

    WHERE: Penobscot Bay and Coastal Waters from Cape Elizabeth,
    ME to Merrimack River, MA out 25 NM.

    WHEN: Until noon EDT today.

    IMPACTS: Conditions will be hazardous to small craft.

    PRECAUTIONARY / PREPAREDNESS ACTIONS:

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

    &&