Islesboro, ME Weather Forecast & Alerts

Current conditions, 5-day forecast, and active NWS weather alerts for Islesboro, ME.

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Current Conditions — Islesboro, ME

ROCKLAND/KNOX (KRKD)

Cloudy

51.8 F
Humidity:87%
Wind Speed:S 9.2 mph
Barometer:29.93 in
Dewpoint:48.2 F
Visibility:10.00 mi
Precip:--
Heat Index:NA
Wind Chill:NA
May 10 2026, 01:20 PM EDT
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5-Day Forecast — Islesboro, ME

Sunday

High 60 °F
Overcast
Sunday
Night
Low 39 °F
Overcast
Monday

High 62 °F
Mostly Cloudy
Monday
Night
Low 44 °F
Mostly Cloudy
Tuesday

High 60 °F
Mostly Cloudy
Tuesday
Night
Low 41 °F
Partly Cloudy
Wednesday

High 59 °F
Mostly Cloudy
Wednesday
Night
Low 44 °F
Rain Likely
Thursday

High 57 °F
Rain Showers Likely

Detailed Forecast — Islesboro, ME

Sunday
Overcast. High near 60°F. Wind 3 to 9 mph, with gusts as high as 17 mph.
Sunday Night
Overcast. Low around 39°F. Wind 0 to 3 mph, with gusts as high as 7 mph.
Monday
Mostly Cloudy. High near 62°F. Wind 3 to 7 mph, with gusts as high as 14 mph.
Monday Night
Mostly Cloudy. Low around 44°F. Wind 2 to 5 mph, with gusts as high as 9 mph.
Tuesday
Mostly Cloudy. High near 60°F. Wind 6 to 7 mph, with gusts as high as 14 mph.
Tuesday Night
Partly Cloudy. Low around 41°F. Wind 1 to 3 mph, with gusts as high as 7 mph.
Wednesday
Mostly Cloudy. High near 59°F. Wind 0 to 9 mph, with gusts as high as 17 mph.
Wednesday Night
Rain Likely. Low around 44°F. Wind 5 to 6 mph, with gusts as high as 12 mph.
Thursday
Rain Showers Likely. High near 57°F. Wind 8 to 9 mph, with gusts as high as 17 mph.
Thursday Night
Rain Likely. Low around 46°F. Wind 3 to 5 mph, with gusts as high as 9 mph.
Friday
Rain Showers Likely. High near 62°F. Wind 6 to 7 mph, with gusts as high as 14 mph.
Friday Night
Rain Likely. Low around 46°F. Wind around 3 mph, with gusts as high as 7 mph.
Saturday
Chance of Rain Showers. High near 66°F. Wind 5 to 7 mph, with gusts as high as 14 mph.
ME Radar
Current Radar • ME
Day 1 Outlook • May 10, 2026

Observation History — Islesboro, ME

Time Wind
(mph)		 Vis
(mi)		 Weather Precip (in) Temperature (F) Relative
Humidity		 Wind
Chill
(F)		 Heat
Index
(F)		 Pressure
Air Dwpt altimeter
(in)		 sea level
(mb)
01:20 PM EDT S 9.2 10.00 Cloudy -- 51.8 48.2 87% NA NA 29.93 1013.5
01:10 PM EDT S 10.4 10.00 Cloudy -- 53.6 48.2 82% NA NA 29.93 1013.5
01:05 PM EDT S 8.1 10.00 Cloudy -- 55.4 51.8 88% NA NA 29.93 1013.5
01:00 PM EDT S 9.2 10.00 Cloudy -- 53.6 50.0 88% NA NA 29.93 1013.5
12:50 PM EDT S 9.2 10.00 Cloudy -- 53.6 50.0 88% NA NA 29.93 1013.5
12:40 PM EDT S 6.9 10.00 Cloudy -- 53.6 51.8 94% NA NA 29.93 1013.5
12:36 PM EDT S 8.1 10.00 Cloudy -- 53.6 51.8 94% NA NA 29.94 1013.6
12:30 PM EDT S 9.2 10.00 Cloudy -- 55.4 51.8 88% NA NA 29.93 1013.5
12:25 PM EDT S 8.1 10.00 Cloudy -- 55.4 51.8 88% NA NA 29.92 1013.2
12:20 PM EDT S 8.1 10.00 Cloudy -- 53.6 51.8 94% NA NA 29.93 1013.5
12:10 PM EDT 9.2 10.00 Cloudy -- 55.4 51.8 88% NA NA 29.92 1013.2
12:05 PM EDT S 8.1 10.00 Cloudy -- 55.4 51.8 88% NA NA 29.92 1013.2
11:50 AM EDT S 9.2 10.00 Mostly Cloudy -- 55.4 51.8 88% NA NA 29.93 1013.5
11:35 AM EDT S 5.7 10.00 Cloudy -- 55.4 51.8 88% NA NA 29.93 1013.5
11:30 AM EDT S 8.1 10.00 Cloudy -- 55.4 51.8 88% NA NA 29.94 1013.9
11:25 AM EDT S 6.9 10.00 Cloudy -- 55.4 51.8 88% NA NA 29.94 1013.9
11:20 AM EDT S 8.1 10.00 Cloudy -- 55.4 51.8 88% NA NA 29.94 1013.9
11:15 AM EDT 8.1 10.00 Cloudy -- 55.4 51.8 88% NA NA 29.93 1013.5
11:10 AM EDT 6.9 10.00 Cloudy -- 55.4 51.8 88% NA NA 29.93 1013.5
11:00 AM EDT SW 6.9 10.00 Cloudy -- 55.4 51.8 88% NA NA 29.93 1013.5
10:50 AM EDT 6.9 10.00 Cloudy -- 53.6 51.8 94% NA NA 29.93 1013.5
10:45 AM EDT 6.9 10.00 Cloudy -- 53.6 51.8 94% NA NA 29.94 1013.9
10:40 AM EDT SW 9.2 10.00 Cloudy -- 53.6 51.8 94% NA NA 29.94 1013.9
10:30 AM EDT SW 9.2 10.00 Cloudy -- 53.6 51.8 94% NA NA 29.94 1013.9

Regional Weather Observation

ROCKLAND/KNOX (KRKD)

Cloudy
51.8 F

BANGOR (KBGR)

Cloudy
57.2 F

WATERVILLE (KWVL)

Cloudy
60.8 F

AUGUSTA (KAUG)

Mostly Cloudy
60.8 F

BAR HARBOR (KBHB)

Cloudy
51.8 F

WISCASSET (KIWI)

Cloudy
57.2 F
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