Weather in Deer Isle

14-day forecast · updated today, Wednesday, October 28, at 8:38 pm (EDT)

Now · clear 45 °F

Feels like: 38 °F
Low / high: 28 / 50 °F
Rain: 1%
Wind: 9 mph WSW

→ 30.33 inHg · steady

Today in Deer Isle: overcast, 28 °F to 50 °F, with a 1% chance of rain and a gentle breeze from the west-southwest (9 mph). Tomorrow, overcast, 47 °F to 59 °F and a 6% chance of rain. The warmest day of the week is Friday 30, at 63 °F. Next likely rain: Tuesday 3 (18%).

Temperatures for the next 14 days

50° 28°
Today
59° 47°
Thu 29
63° 47°
Fri 30
51° 39°
Sat 31
54° 39°
Sun 1
58° 45°
Mon 2
55° 45°
Tue 3
55° 44°
Wed 4
56° 46°
Thu 5
57° 47°
Fri 6
54° 44°
Sat 7
53° 42°
Sun 8
51° 41°
Mon 9
47° 40°
Tue 10

Day by day

Day	Sky	Low / high	Rain	Max wind	Max wave	High tides	Model
Today · 28	Overcast	28 / 50 °F	1%	10 mph WSW	1.5 ft	12:32 am · 12:43 pm	HRRR
Thu 29	Overcast	47 / 59 °F	6%	15 mph SW	3.8 ft	1:23 am · 1:34 pm	HRRR + NBM
Fri 30	Light drizzle	47 / 63 °F	24% · 0.04 in	13 mph W	3.7 ft	2:16 am · 2:29 pm	NBM
Sat 31	Clear sky	39 / 51 °F	0%	14 mph NW	2.2 ft	3:12 am · 3:27 pm	NBM
Sun 1	Partly cloudy	39 / 54 °F	0%	10 mph WSW	1.7 ft	3:11 am · 3:28 pm	NBM
Mon 2	Overcast	45 / 58 °F	9%	9 mph WSW	1.7 ft	4:13 am · 4:34 pm	NBM
Tue 3	Overcast	45 / 55 °F	18% · 0.05 in	7 mph NE	2.0 ft	5:17 am · 5:42 pm	NBM
Wed 4	Overcast	44 / 55 °F	18% · 0.07 in	8 mph S	4.5 ft	6:21 am · 6:49 pm	NBM
Thu 5	Partly cloudy	46 / 56 °F	25% · 0.15 in	10 mph SSE	2.4 ft	7:21 am · 7:52 pm	NBM
Fri 6	Overcast	47 / 57 °F	41% · 0.50 in	12 mph SE	2.0 ft	8:17 am · 8:50 pm	NBM
Sat 7	Light rain	44 / 54 °F	36% · 0.25 in	10 mph ESE	2.2 ft	9:08 am · 9:42 pm	NBM
Sun 8	Drizzle	42 / 53 °F	24% · 0.09 in	17 mph N	2.0 ft	9:55 am · 10:31 pm	NBM + ECMWF
Mon 9	Clear sky	41 / 51 °F	22%	11 mph NW	1.0 ft	10:39 am · 11:17 pm	ECMWF
Tue 10	Mainly clear	40 / 47 °F	16%	10 mph N	0.9 ft	11:21 am · 11:59 pm	ECMWF

Each hour comes from the best model for this spot: HRRR until Thursday 29 3:00 pm; then NBM until Sunday 8 2:00 pm; then ECMWF until Thursday 12 10:00 am; then GFS.

Each day comes from the best model covering this spot: regional ones first (HRRR and NBM in the U.S., AROME, ICON-EU), then ECMWF; day 16, NOAA GFS. Waves: Météo-France up to day 10, then ECMWF WAM, coarser and further offshore. High tides: our own tide calculation.

Today, every 3 hours

Time	12:00 am	3:00 am	6:00 am	9:00 am	12:00 pm	3:00 pm	6:00 pm	9:00 pm
Sky	Clear	Clear	Clear	Mainly clear	Partly cloudy	Partly cloudy	Partly cloudy	Clear
Temperature	38°	33°	29°	38°	47°	49°	45°	45°
Chance of rain	0%	0%	0%	0%	0%	0%	1%	1%
Rain	0.00 in	0.00 in	0.00 in	0.00 in	0.00 in	0.00 in	0.00 in	0.00 in
Wind (mph)	10 NNW	4 NNE	4 NE	1 SE	4 SW	8 SW	8 WSW	9 WSW
Humidity	51%	60%	69%	66%	51%	48%	64%	71%
UV	0	0	0	1	3	1	0	0
Model	HRRR	HRRR	HRRR	HRRR	HRRR	HRRR	HRRR	HRRR

Do the models agree?

Medium confidence

They broadly agree, but not quite on rain on Friday 30: take it with some caution.

What 6 forecast models say for the next few days. The closer they are, the more reliable the forecast.

HighRainWind

Do the models agree? · High
High (°F)	Today	Thu 29	Fri 30	Sat 31	Sun 1	Mon 2	Tue 3
ECMWF	48°	56°	58°	49°	50°	53°	53°
AIFS	47°	56°	59°	48°	49°	56°	57°
GFS	47°	55°	62°	48°	50°	54°	52°
ICON	47°	57°	62°	49°	53°	62°	58°
HRRR	50°	57°	—	—	—	—	—
NBM	49°	59°	63°	51°	54°	58°	55°
Confidence	high	high	high	high	high	high	high

Do the models agree? · Rain
Rain	Today	Thu 29	Fri 30	Sat 31	Sun 1	Mon 2	Tue 3
ECMWF	0	0	0.02 in	0	0	0	0
AIFS	0	0	0.05 in	0	0	0	0
GFS	0	0	0.15 in	0	0	0	0
ICON	0	0	0.03 in	0	0	0	0
HRRR	0	0	—	—	—	—	—
NBM	0	0	0.04 in	0	0	0	0.04 in
Confidence	high	high	medium	high	high	high	high

Do the models agree? · Wind
Wind (mph)	Today	Thu 29	Fri 30	Sat 31	Sun 1	Mon 2	Tue 3
ECMWF	1622	2229	2128	2028	1422	1621	1216
AIFS	13	18	18	19	13	11	18
GFS	1221	1835	2136	2334	1119	1020	1324
ICON	918	1223	1529	1938	1223	1020	1530
HRRR	1022	1536	—	—	—	—	—
NBM	917	1530	1328	1426	1019	917	712
Confidence	high	high	high	high	high	high	high

Chance of rain from the ensemble models

Model	Today	Thu 29	Fri 30	Sat 31	Sun 1	Mon 2	Tue 3
ECMWF (51 scenarios)	0%	0%	59%	0%	0%	4%	19%
GFS (GEFS, 31 scenarios)	0%	0%	58%	0%	0%	15%	29%
NBM (NOAA)	1%	6%	24%	0%	0%	9%	18%
Thunderstorm (NBM)	0%	0%	2%	0%	0%	0%	0%

Each model's day runs midnight to midnight local time; models that reach fewer days are left blank. Rain: daily total. Wind: the day's highest average wind and, in small type, the strongest gust. Highlighted: values that stand out from the rest. The chance of rain comes from many runs of the same model with slightly different starting data.

Outlook

How the coming weeks and months compare with what is normal for the time of year. It is a trend, not a day-by-day forecast.

Next few weeks, compared with normal: a bit warmer, normal rain and a near-normal sea.

Next 6 weeks

When	TemperatureTemp.	Rain	Sea	Typical high / low
Nov 2 – Nov 8Nov 2–Nov 8	Above +2.7 °F	Normal	Normal −0.2 °F	—
Nov 9 – Nov 15Nov 9–Nov 15	A bit above +1.1 °F	Normal	Normal +0.2 °F	48° / 45°
Nov 16 – Nov 22Nov 16–Nov 22	A bit above +1.8 °F	A bit below −23%	Normal +0.4 °F	47° / 44°
Nov 23 – Nov 29Nov 23–Nov 29	A bit above +2.2 °F	A bit above +23%	A bit above +0.5 °F	46° / 43°
Nov 30 – Dec 6Nov 30–Dec 6	A bit above +2.0 °F	A bit above +21%	A bit above +0.7 °F	44° / 41°

Coming months

When	TemperatureTemp.	Rain	Sea
November	A bit above +1.4 °F	Normal	A bit above +0.7 °F
December	Above +3.2 °F	Normal	A bit above +1.4 °F
January	Above +4.5 °F	A bit above +30%	Above +2.7 °F
February	Above +4.0 °F	A bit above +20%	Above +3.2 °F
March	Above +3.4 °F	Normal	Above +3.1 °F

Weeks: ECMWF 46-day (average of its scenarios), against the normal of the last 20 years for those dates. Months: ECMWF SEAS5. Rain: total against normal. The further ahead, the closer it gets to normal and the less detail it can give.

Deer Isle climate by monthClimate by month

Normal weather for each month (1991–2020 averages)

The best time to visit Deer Isle is from July to August: highs of 76 °F to 77 °F, about 9 rainy days a month and 8 hours of sunshine a day.

Tropical cyclones rarely pass near Deer Isle: one within 93 mi in the last 30 years (1996–2025), Bertha, in July 1996.

32° 15°

JanJ
34° 16°

FebF
40° 25°

MarM
50° 35°

AprA
61° 44°

MayM
71° 52°

JunJ
77° 58°

JulJ
76° 58°

AugA
68° 52°

SepS
57° 42°

OctO
47° 34°

NovN
37° 23°

DecD

Highs and lows
Monthly rainfall
Best time

Month	High	Low	Rain	Rainy daysDays	Sun (h/day)	Water	Waves
JanuaryJan	32°	15°	4.22 in	8	3.8	41°	5.3 ft
FebruaryFeb	34°	16°	3.78 in	7	5.1	38°	5.1 ft
MarchMar	40°	25°	4.32 in	9	6.0	37°	4.7 ft
AprilApr	50°	35°	4.77 in	9	6.3	40°	4.3 ft
MayMay	61°	44°	4.35 in	10	6.4	45°	3.2 ft
JuneJun	71°	52°	3.93 in	10	7.1	51°	2.9 ft
JulyJul	77°	58°	2.92 in	9	7.6	56°	2.7 ft
AugustAug	76°	58°	2.74 in	8	7.5	58°	2.6 ft
SeptemberSep	68°	52°	3.91 in	8	6.2	56°	3.3 ft
OctoberOct	57°	42°	5.58 in	9	4.2	53°	4.1 ft
NovemberNov	47°	34°	5.69 in	9	3.1	49°	4.7 ft
DecemberDec	37°	23°	5.69 in	10	2.8	45°	4.9 ft

Month	Water	Waves
Jan	41°	5.3 ft
Feb	38°	5.1 ft
Mar	37°	4.7 ft
Apr	40°	4.3 ft
May	45°	3.2 ft
Jun	51°	2.9 ft
Jul	56°	2.7 ft
Aug	58°	2.6 ft
Sep	56°	3.3 ft
Oct	53°	4.1 ft
Nov	49°	4.7 ft
Dec	45°	4.9 ft

Days: rainy days in the month. Sun: hours a day.

A normal year brings 51.89 in of rain on about 105 days and about 2,000 hours of sunshine.

1991–2020 averages. Highs, lows and rainfall: TerraClimate; rainy days (0.04 in or more): NASA POWER (MERRA-2); sunshine hours: estimated from solar radiation; water: NOAA OISST; waves (average height): ERA5, 2011–2020. Normals are not a forecast: any given year can turn out very different. Sources and licenses

Temperature

Now45 °Ffeels like 38 °F

Tomorrow47 / 59 °F

It's 45 °F now (feels like 38 °F). Today, 28 °F to 50 °F; tomorrow, 47 °F to 59 °F.

Chance of rain

Today 1%
Thu 29 6%
Fri 30 24% 0.04 in
Sat 31 0%
Sun 1 0%
Mon 2 9%
Tue 3 18% 0.05 in

Today the chance of rain reaches 1%. The next day with likely rain is Tuesday 3: 18% and 0.05 in.

No rain in the last 7 days.

Humidity and dew point

Humidity69%

Dew point35 °F

Humidity is 69% now and the dew point is 35 °F.

The dew point is the temperature at which the air becomes saturated: the higher it is, the heavier the air feels.

Visibility and fog

Now15 migood

Clouds0%

Visibility is good now (15 mi). No fog expected today.

UV index

Now0

Today's peak3low

Thu 29: 3 · Fri 30: 2 · Sat 31: 2

Index	Level	What to do
0–2	low	No special protection needed.
3–5	moderate	Hat, sunglasses and sunscreen around midday.
6–7	high	Sunscreen, hat and shade between 12 and 4 pm.
8–10	very high	Avoid the midday sun; reflection off the water adds to it.
11+	extreme	Avoid the sun between 11 am and 5 pm; protect yourself even if it is cloudy.

Reflection off water and sand adds radiation: protect yourself more on a boat or at the beach.

Barometric pressure

↗ Rising Anglers say fish bite less for a while
→ Steady · now Anglers expect normal activity
↘ Falling Anglers say fish feed more before the change

29.8030.0030.2030.40 29.85

Steady now (−0.02 inHg in 3 hours). Over the next 48 hours: −0.34 inHg. Steady pressure: anglers expect normal activity. Fast changes, either way, tend to affect fishing.

Air and pollen

Air qualityGood · 31

Saharan dustNo

Previous days

The weather over the last 30 days, as the models analyzed it. Tap a day to see it hour by hour.

Day	Sky	Low / high	Max wind
Tue 27	Partly cloudy	41 / 50 °F	17 mph NNW
Mon 26	Overcast	48 / 58 °F	18 mph W
Sun 25	Clear sky	44 / 53 °F	16 mph SW
Sat 24	Clear sky	38 / 53 °F	11 mph NW
Fri 23	Clear sky	42 / 51 °F	22 mph N
Thu 22	Overcast	45 / 55 °F	20 mph N
Wed 21	Overcast	42 / 55 °F	15 mph NNE

Show all 30 days

Day	Sky	Low / high	Rain	Max wind
Tue 20	Partly cloudy	44 / 58 °F	0	15 mph N
Mon 19	Partly cloudy	49 / 52 °F	0	13 mph SSW
Sun 18	Clear sky	38 / 50 °F	0	18 mph WSW
Sat 17	Overcast	41 / 56 °F	0	23 mph NW
Fri 16	Light rain	45 / 58 °F	0.52 in	21 mph S
Thu 15	Overcast	48 / 56 °F	0	20 mph NW
Wed 14	Drizzle	53 / 60 °F	0.25 in	26 mph WNW
Tue 13	Rain	43 / 53 °F	0.93 in	27 mph E
Mon 12	Drizzle	49 / 59 °F	0.18 in	20 mph WNW
Sun 11	Light drizzle	46 / 55 °F	0.04 in	17 mph SSW
Sat 10	Overcast	47 / 56 °F	0	17 mph NW
Fri 9	Light drizzle	51 / 59 °F	0.05 in	17 mph W
Thu 8	Heavy drizzle	56 / 58 °F	0.22 in	20 mph SW
Wed 7	Overcast	46 / 57 °F	0	19 mph SW
Tue 6	Mainly clear	49 / 55 °F	0	23 mph WNW
Mon 5	Light drizzle	52 / 59 °F	0.01 in	20 mph W
Sun 4	Overcast	48 / 56 °F	0	13 mph E
Sat 3	Overcast	52 / 59 °F	0	11 mph NNW
Fri 2	Heavy drizzle	56 / 61 °F	0.14 in	20 mph WSW
Thu 1	Overcast	54 / 60 °F	0	15 mph SW
Wed 30	Overcast	55 / 57 °F	0	11 mph W
Tue 29	Drizzle	55 / 58 °F	0.27 in	15 mph NNE
Mon 28	Rain	54 / 58 °F	1.42 in	19 mph NE

These are the models at the start of each day (ECMWF and GFS; waves from Météo-France), not readings from a weather station: there can be differences at specific spots.

Questions about the weather in Deer IsleQuestions

What's the weather like today in Deer Isle?

Overcast, from 28 °F to 50 °F, with a gentle breeze from the west-southwest (9 mph) and a 1% chance of rain.

Will it rain tomorrow in Deer Isle?

On Thursday 29 the chance of rain is 6% (0.00 in): overcast.

How warm will it be this week?

Between a low of 28 °F and a high of 63 °F; the warmest day, Friday 30.

What's the UV index today?

It reaches 3 (low). No special protection needed.

Is the pressure rising or falling?

It's 30.33 inHg and steady: −0.03 inHg over the last 24 hours.

When is the best time to visit Deer Isle?

The best time to visit Deer Isle is from July to August: highs of 76 °F to 77 °F, about 9 rainy days a month and 8 hours of sunshine a day.

What is the weather like in Deer Isle in October?

In October, Deer Isle normally sees highs of 57 °F and lows of 42 °F, with about 9 rainy days (5.58 in for the month) and 4 hours of sunshine a day. The sea is around 53 °F. These are 1991–2020 averages.

What are the warmest and wettest months in Deer Isle?

The warmest is July, with average highs of 77 °F, and the coldest January, with lows of 15 °F. The wettest is December (5.69 in) and the driest, August.

More about Deer Isle today

Weather near Deer Isle

Only places with a different forecast: spots a few miles apart share the same model cell and wouldn't add anything.

Learn more

Weather: Open-Meteo, CC BY 4.0, with the best model for each spot and lead time (NOAA HRRR and NBM in the U.S., Météo-France AROME, DWD ICON-EU, ECMWF IFS and NOAA GFS); ECMWF grid point 4.0 mi away. The comparison also uses ICON (DWD), AIFS (ECMWF) and ARPEGE (Météo-France). Outlook: ECMWF 46-day and SEAS5. Chance of rain from ensemble models (ECMWF, GEFS and NBM). UV, air quality and pollen: CAMS (Copernicus).

Forecast from Open-Meteo (CC BY 4.0) with models from ECMWF, NOAA, Météo-France, DWD, Copernicus Marine and CAMS. Updated at 8:38 pm (local time).

Spotted a mistake? Tell us · Where the weather and sea data come from