Weather in Northwest Harbor

14-day forecast · updated today, Thursday, October 29, at 4:25 am (EDT)

Now · clear 49 °F

Feels like: 44 °F
Low / high: 47 / 65 °F
Rain: 1%
Wind: 6 mph SSW

→ 30.30 inHg · steady

Today in Northwest Harbor: clear sky, 47 °F to 65 °F, with a 1% chance of rain and a light breeze from the south-southwest (6 mph). Tomorrow, partly cloudy, 48 °F to 67 °F and a 5% chance of rain. The warmest day of the week is Friday 30, at 67 °F. Next likely rain: Wednesday 4 (24%).

Measured now at the airport

East Hampton (KJPX), 3.7 mi away · 30 min ago

Visibility9.9 mi or more

WeatherNothing to note

Temperature41 °F

WindCalm

It's what the airport's weather station measured, not a forecast: on the coast, wind and fog can be different. Airports report every 30 or 60 minutes.

Airport METAR report, via NOAA's Aviation Weather Center (aviationweather.gov). Sources and licenses

Temperatures for the next 14 days

65° 47°
Today
67° 48°
Fri 30
56° 44°
Sat 31
59° 43°
Sun 1
64° 50°
Mon 2
63° 51°
Tue 3
63° 51°
Wed 4
64° 53°
Thu 5
63° 51°
Fri 6
59° 48°
Sat 7
58° 46°
Sun 8
57° 51°
Mon 9
60° 52°
Tue 10
57° 55°
Wed 11

Day by day

Day	Sky	Low / high	Rain	Max wind	Max wave	High tides	Model
Today · 29	Clear sky	47 / 65 °F	1%	11 mph SW	2.2 ft	12:25 am · 12:50 pm	HRRR + NBM
Fri 30	Partly cloudy	48 / 67 °F	5%	10 mph WNW	2.5 ft	1:22 am · 1:51 pm	NBM
Sat 31	Partly cloudy	44 / 56 °F	0%	9 mph NNW	2.2 ft	2:25 am · 2:55 pm	NBM
Sun 1	Overcast	43 / 59 °F	0%	6 mph W	1.5 ft	2:31 am · 3:00 pm	NBM
Mon 2	Partly cloudy	50 / 64 °F	5%	7 mph WSW	1.6 ft	3:41 am · 4:09 pm	NBM
Tue 3	Overcast	51 / 63 °F	11%	9 mph ENE	1.7 ft	4:52 am · 5:14 pm	NBM
Wed 4	Overcast	51 / 63 °F	24% · 0.06 in	10 mph ESE	3.1 ft	5:54 am · 6:11 pm	NBM
Thu 5	Overcast	53 / 64 °F	34% · 0.39 in	11 mph ESE	4.5 ft	6:44 am · 7:00 pm	NBM
Fri 6	Rain	51 / 63 °F	34% · 0.58 in	11 mph ENE	5.0 ft	7:29 am · 7:46 pm	NBM
Sat 7	Rain	48 / 59 °F	33% · 0.47 in	10 mph N	5.1 ft	8:11 am · 8:30 pm	NBM
Sun 8	Mainly clear	46 / 58 °F	22% · 0.07 in	14 mph NW	3.7 ft	8:51 am · 9:13 pm	NBM + ECMWF
Mon 9	Partly cloudy	51 / 57 °F	22%	17 mph W	2.4 ft	9:31 am · 9:56 pm	ECMWF
Tue 10	Light drizzle	52 / 60 °F	13% · 0.07 in	7 mph SSW	1.1 ft	10:12 am · 10:39 pm	ECMWF
Wed 11	Light drizzle	55 / 57 °F	18% · 0.08 in	8 mph NNW	1.2 ft	10:54 am · 11:25 pm	ECMWF

Each hour comes from the best model for this spot: HRRR until Thursday 29 11:00 pm; then NBM until Sunday 8 8:00 pm; then ECMWF until Thursday 12 10:00 pm; 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	Clear sky	Clear sky	Clear sky	Clear	Clear
Temperature	47°	48°	48°	56°	64°	64°	57°	56°
Chance of rain	1%	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)	5 SSE	6 SSW	6 SW	5 SW	8 SW	11 SW	7 SSW	8 SW
Humidity	78%	80%	81%	83%	68%	68%	89%	89%
UV	0	0	0	1	3	2	0	0
Model	HRRR	HRRR	HRRR	HRRR	HRRR	HRRR	HRRR	HRRR

Do the models agree?

Medium confidence

They broadly agree, but not quite on wind tomorrow: 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	Fri 30	Sat 31	Sun 1	Mon 2	Tue 3	Wed 4
ECMWF	62°	63°	53°	55°	63°	62°	57°
AIFS	60°	63°	55°	55°	59°	60°	61°
GFS	64°	68°	53°	57°	62°	61°	58°
ICON	64°	68°	54°	58°	64°	68°	67°
HRRR	65°	64°	—	—	—	—	—
NBM	65°	67°	56°	59°	64°	63°	63°
Confidence	high	high	high	high	high	high	medium

Do the models agree? · Rain
Rain	Today	Fri 30	Sat 31	Sun 1	Mon 2	Tue 3	Wed 4
ECMWF	0	0	0	0	0	0	0
AIFS	0	0	0	0	0	0	0
GFS	0	0	0	0	0	0	0
ICON	0	0	0	0	0	0	0
HRRR	0	0	—	—	—	—	—
NBM	0	0	0	0	0	0	0.05 in
Confidence	high	high	high	high	high	high	high

Do the models agree? · Wind
Wind (mph)	Today	Fri 30	Sat 31	Sun 1	Mon 2	Tue 3	Wed 4
ECMWF	1320	1627	1423	1020	1319	1219	1322
AIFS	17	19	18	9	13	14	14
GFS	1427	2231	1725	711	1422	1422	1423
ICON	919	1227	1023	513	920	410	613
HRRR	1128	1532	—	—	—	—	—
NBM	917	1021	919	611	712	917	1019
Confidence	high	medium	medium	high	high	high	high

Chance of rain from the ensemble models

Model	Today	Fri 30	Sat 31	Sun 1	Mon 2	Tue 3	Wed 4
ECMWF (51 scenarios)	0%	4%	0%	0%	6%	10%	12%
GFS (GEFS, 31 scenarios)	0%	3%	0%	0%	10%	16%	19%
NBM (NOAA)	1%	5%	0%	0%	5%	11%	24%
Thunderstorm (NBM)	0%	2%	0%	0%	0%	1%	1%

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: warmer, normal rain and a slightly warmer sea.

Next 6 weeks

When	TemperatureTemp.	Rain	Sea	Typical high / low
Nov 2 – Nov 8Nov 2–Nov 8	Above +5.0 °F	A bit above +43%	A bit above +1.4 °F	—
Nov 9 – Nov 15Nov 9–Nov 15	A bit above +1.3 °F	Normal	Above +1.8 °F	—
Nov 16 – Nov 22Nov 16–Nov 22	A bit above +2.2 °F	Normal	Above +1.8 °F	52° / 46°
Nov 23 – Nov 29Nov 23–Nov 29	A bit above +2.3 °F	A bit above +30%	Above +1.8 °F	49° / 45°
Nov 30 – Dec 6Nov 30–Dec 6	A bit above +1.8 °F	A bit above +21%	A bit above +1.4 °F	47° / 42°

Coming months

When	TemperatureTemp.	Rain	Sea
November	A bit above +1.1 °F	A bit above +26%	A bit above +0.9 °F
December	A bit above +2.5 °F	A bit above +30%	Above +1.8 °F
January	Above +3.6 °F	A bit above +38%	Above +2.5 °F
February	Above +2.9 °F	A bit above +31%	Above +2.7 °F
March	Above +2.9 °F	A bit above +25%	Above +2.5 °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.

Northwest Harbor climate by monthClimate by month

Normal weather for each month (1991–2020 averages)

The best time to visit Northwest Harbor is from June to September: highs of 74 °F to 81 °F, about 9 rainy days a month and 7 hours of sunshine a day.

Hurricane season: from July to September, peaking in August. In the last 30 years (1996–2025), 10 tropical cyclones passed within 93 mi of Northwest Harbor, about 3 every 10 years. The most recent: Henri, in August 2021.

39° 24°

JanJ
40° 25°

FebF
47° 31°

MarM
56° 40°

AprA
66° 49°

MayM
75° 58°

JunJ
81° 65°

JulJ
80° 64°

AugA
74° 58°

SepS
64° 47°

OctO
54° 38°

NovN
44° 30°

DecD

Highs and lows
Monthly rainfall
Best time

Month	High	Low	Rain	Rainy daysDays	Sun (h/day)	Water	Waves	Cyclones
JanuaryJan	39°	24°	3.87 in	8	3.6	42°	4.5 ft	–
FebruaryFeb	40°	25°	3.61 in	7	4.9	39°	4.2 ft	–
MarchMar	47°	31°	4.76 in	8	5.5	39°	4.0 ft	–
AprilApr	56°	40°	4.18 in	9	6.2	44°	3.9 ft	–
MayMay	66°	49°	3.51 in	9	6.7	52°	3.2 ft	–
JuneJun	75°	58°	3.82 in	9	7.5	61°	2.8 ft	1
JulyJul	81°	65°	3.18 in	9	8.1	69°	2.7 ft	3
AugustAug	80°	64°	3.99 in	9	7.4	71°	2.7 ft	4
SeptemberSep	74°	58°	3.97 in	8	6.1	68°	3.4 ft	2
OctoberOct	64°	47°	4.54 in	8	4.8	63°	4.0 ft	–
NovemberNov	54°	38°	4.20 in	7	3.7	55°	4.2 ft	–
DecemberDec	44°	30°	4.63 in	9	3.2	48°	4.3 ft	–

Month	Water	Waves	Cyclones
Jan	42°	4.5 ft	–
Feb	39°	4.2 ft	–
Mar	39°	4.0 ft	–
Apr	44°	3.9 ft	–
May	52°	3.2 ft	–
Jun	61°	2.8 ft	1
Jul	69°	2.7 ft	3
Aug	71°	2.7 ft	4
Sep	68°	3.4 ft	2
Oct	63°	4.0 ft	–
Nov	55°	4.2 ft	–
Dec	48°	4.3 ft	–

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

A normal year brings 48.25 in of rain on about 100 days and about 2,050 hours of sunshine.

Cyclones: how many tropical cyclones (tropical storms, hurricanes and typhoons) passed within 93 mi in each month from 1996 to 2025, according to IBTrACS (NOAA).

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

Now49 °Ffeels like 44 °F

Tomorrow48 / 67 °F

It's 49 °F now (feels like 44 °F). Today, 47 °F to 65 °F; tomorrow, 48 °F to 67 °F.

Chance of rain

Today 1%
Fri 30 5%
Sat 31 0%
Sun 1 0%
Mon 2 5%
Tue 3 11%
Wed 4 24% 0.06 in

Today the chance of rain reaches 1%. The next day with likely rain is Wednesday 4: 24% and 0.06 in.

No rain in the last 7 days.

Humidity and dew point

Humidity80%

Dew point43 °F

Humidity is 80% now and the dew point is 43 °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

Now9.8 migood

Clouds0%

Visibility is good now (9.8 mi). No fog expected today.

UV index

Now0

Today's peak3moderate

Fri 30: 3 · Sat 31: 3 · Sun 1: 3

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

30.0030.2030.40 30.00

Steady now (−0.01 inHg in 3 hours). It barely changes over the next 48 hours. Steady pressure: anglers expect normal activity. Fast changes, either way, tend to affect fishing.

Air and pollen

Air qualityGood · 40

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
Wed 28	Overcast	47 / 57 °F	10 mph ENE
Tue 27	Mainly clear	52 / 60 °F	12 mph N
Mon 26	Clear sky	51 / 63 °F	11 mph W
Sun 25	Clear sky	47 / 61 °F	7 mph WNW
Sat 24	Overcast	46 / 57 °F	8 mph NW
Fri 23	Partly cloudy	50 / 57 °F	15 mph NNE
Thu 22	Overcast	52 / 63 °F	20 mph N

Show all 30 days

Day	Sky	Low / high	Rain	Max wind
Wed 21	Overcast	52 / 58 °F	0	20 mph NNE
Tue 20	Overcast	50 / 64 °F	0	17 mph NNE
Mon 19	Mainly clear	49 / 58 °F	0	12 mph NE
Sun 18	Clear sky	44 / 54 °F	0	17 mph NNE
Sat 17	Drizzle	49 / 64 °F	0.26 in	20 mph NNW
Fri 16	Rain	57 / 67 °F	0.81 in	17 mph SSW
Thu 15	Partly cloudy	57 / 64 °F	0	16 mph N
Wed 14	Light drizzle	65 / 73 °F	0.02 in	16 mph WSW
Tue 13	Mainly clear	60 / 66 °F	0	16 mph SSE
Mon 12	Drizzle	57 / 67 °F	0.09 in	16 mph N
Sun 11	Rain	56 / 63 °F	1.24 in	22 mph E
Sat 10	Overcast	58 / 63 °F	0	8 mph NNE
Fri 9	Overcast	57 / 68 °F	0	15 mph WNW
Thu 8	Mainly clear	61 / 69 °F	0	14 mph WSW
Wed 7	Clear sky	51 / 63 °F	0	13 mph SSW
Tue 6	Clear sky	52 / 59 °F	0	19 mph NW
Mon 5	Overcast	60 / 68 °F	0	20 mph WNW
Sun 4	Light rain	58 / 62 °F	0.44 in	16 mph ENE
Sat 3	Light drizzle	60 / 68 °F	0.04 in	14 mph NE
Fri 2	Drizzle	67 / 73 °F	0.11 in	16 mph SW
Thu 1	Overcast	62 / 71 °F	0	14 mph SW
Wed 30	Overcast	62 / 66 °F	0	7 mph WNW
Tue 29	Overcast	60 / 67 °F	0	11 mph WNW

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 Northwest HarborQuestions

What's the weather like today in Northwest Harbor?

Clear sky, from 47 °F to 65 °F, with a light breeze from the south-southwest (6 mph) and a 1% chance of rain.

Will it rain tomorrow in Northwest Harbor?

On Friday 30 the chance of rain is 5% (0.00 in): partly cloudy.

How warm will it be this week?

Between a low of 43 °F and a high of 67 °F; the warmest day, Friday 30.

What's the UV index today?

It reaches 3 (moderate). Hat, sunglasses and sunscreen around midday.

Is the pressure rising or falling?

It's 30.30 inHg and steady: −0.14 inHg over the last 24 hours.

When is the best time to visit Northwest Harbor?

The best time to visit Northwest Harbor is from June to September: highs of 74 °F to 81 °F, about 9 rainy days a month and 7 hours of sunshine a day.

What is the weather like in Northwest Harbor in October?

In October, Northwest Harbor normally sees highs of 64 °F and lows of 47 °F, with about 8 rainy days (4.54 in for the month) and 5 hours of sunshine a day. The sea is around 63 °F. These are 1991–2020 averages.

What are the warmest and wettest months in Northwest Harbor?

The warmest is July, with average highs of 81 °F, and the coldest January, with lows of 24 °F. The wettest is March (4.76 in) and the driest, July.

When is hurricane season in Northwest Harbor?

Hurricane season: from July to September, peaking in August. In the last 30 years (1996–2025), 10 tropical cyclones passed within 93 mi of Northwest Harbor, about 3 every 10 years. The most recent: Henri, in August 2021.

More about Northwest Harbor today

Weather near Northwest Harbor

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 1.6 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 4:25 am (local time).

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