Weather in Boston Harbor

14-day forecast · updated today, Wednesday, October 28, at 6:13 pm (PDT)

Now · mainly clear 49 °F

Feels like: 44 °F
Low / high: 44 / 54 °F
Rain: 75% · 0.09 in
Wind: 7 mph SW

→ 29.99 inHg · steady

Today in Boston Harbor: light rain, 44 °F to 54 °F, with a 75% chance of rain (0.09 in) and a light breeze from the southwest (7 mph). Tomorrow, light rain, 43 °F to 50 °F and a 42% chance of rain. The warmest day of the week is Tuesday 3, at 55 °F.

Temperatures for the next 14 days

54° 44°
Today
50° 43°
Thu 29
50° 41°
Fri 30
52° 40°
Sat 31
53° 40°
Sun 1
53° 41°
Mon 2
55° 42°
Tue 3
55° 41°
Wed 4
55° 43°
Thu 5
55° 45°
Fri 6
55° 46°
Sat 7
60° 46°
Sun 8
53° 45°
Mon 9
58° 46°
Tue 10

Day by day

Day	Sky	Low / high	Rain	Max wind	High tides	Model
Today · 28	Light rain	44 / 54 °F	75% · 0.09 in	17 mph SW	8:27 am · 6:47 pm	HRRR
Thu 29	Light rain	43 / 50 °F	42% · 0.09 in	10 mph S	9:23 am · 7:30 pm	HRRR + NBM
Fri 30	Drizzle	41 / 50 °F	31% · 0.04 in	4 mph ESE	10:25 am · 8:22 pm	NBM
Sat 31	Overcast	40 / 52 °F	19%	3 mph ENE	11:31 am · 9:28 pm	NBM
Sun 1	Overcast	40 / 53 °F	4%	3 mph SSE	11:38 am · 9:54 pm	NBM
Mon 2	Overcast	41 / 53 °F	9%	4 mph NE	12:38 pm · 11:35 pm	NBM
Tue 3	Overcast	42 / 55 °F	7%	4 mph NE	1:27 pm	NBM
Wed 4	Overcast	41 / 55 °F	12%	3 mph ESE	1:16 am · 2:06 pm	NBM
Thu 5	Light drizzle	43 / 55 °F	19%	2 mph SSE	2:41 am · 2:38 pm	NBM
Fri 6	Drizzle	45 / 55 °F	32% · 0.15 in	3 mph S	3:51 am · 3:06 pm	NBM
Sat 7	Heavy drizzle	46 / 55 °F	35% · 0.36 in	4 mph S	4:49 am · 3:32 pm	NBM
Sun 8	Light drizzle	46 / 60 °F	43% · 0.20 in	5 mph SSW	5:39 am · 3:57 pm	NBM + ECMWF
Mon 9	Light rain	45 / 53 °F	37% · 0.83 in	5 mph NNE	6:24 am · 4:24 pm	ECMWF
Tue 10	Overcast	46 / 58 °F	51%	2 mph S	7:04 am · 4:54 pm	ECMWF

Each hour comes from the best model for this spot: HRRR until Thursday 29 1:00 pm; then NBM until Sunday 8 11:00 am; then ECMWF until Thursday 12 7:00 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	Light rain	Light drizzle	Mainly clear	Partly cloudy	Light drizzle	Light drizzle	Mainly clear	Partly cloudy
Temperature	48°	48°	46°	47°	51°	52°	49°	46°
Chance of rain	75%	18%	33%	25%	26%	30%	6%	15%
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)	14 S	7 SSW	8 SSW	7 S	4 W	9 SW	7 WSW	5 SSW
Humidity	90%	88%	87%	98%	85%	75%	78%	85%
UV	0	0	0	0	1	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 today: 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	54°	49°	51°	55°	54°	55°	57°
AIFS	51°	49°	49°	51°	52°	52°	55°
GFS	55°	53°	52°	53°	58°	54°	56°
ICON	53°	52°	50°	51°	54°	53°	57°
HRRR	54°	52°	—	—	—	—	—
NBM	51°	50°	50°	52°	53°	53°	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	0.28 in	0.79 in	0.31 in	0	0	0	0
AIFS	0.26 in	0.31 in	0.31 in	0	0	0.00 in	0.02 in
GFS	0.42 in	0.14 in	0.11 in	0	0	0	0
ICON	0.10 in	0.24 in	0.25 in	0.03 in	0	0	0
HRRR	0.09 in	0.17 in	—	—	—	—	—
NBM	0.28 in	0.20 in	0.04 in	0	0	0	0
Confidence	medium	high	high	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	921	412	313	310	311	211	39
AIFS	9	3	3	3	2	2	2
GFS	921	49	514	34	35	417	49
ICON	1022	515	511	511	27	26	37
HRRR	1730	1123	—	—	—	—	—
NBM	1926	812	46	35	34	45	45
Confidence	medium	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)	100%	100%	73%	18%	10%	4%	6%
GFS (GEFS, 31 scenarios)	100%	77%	52%	14%	11%	6%	10%
NBM (NOAA)	75%	42%	31%	19%	4%	9%	7%
Thunderstorm (NBM)	1%	1%	5%	1%	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 and normal rain.

Next 6 weeks

When	TemperatureTemp.	Rain	Typical high / low
Nov 2 – Nov 8Nov 2–Nov 8	Normal −0.7 °F	A bit below −41%	—
Nov 9 – Nov 15Nov 9–Nov 15	Above +3.4 °F	A bit above +41%	52° / 44°
Nov 16 – Nov 22Nov 16–Nov 22	A bit above +2.2 °F	Normal	49° / 42°
Nov 23 – Nov 29Nov 23–Nov 29	A bit above +2.2 °F	Normal	48° / 40°
Nov 30 – Dec 6Nov 30–Dec 6	A bit above +1.8 °F	Normal	46° / 38°

Coming months

When	TemperatureTemp.	Rain
November	A bit above +1.4 °F	Normal
December	Above +2.7 °F	Normal
January	Above +2.7 °F	Normal
February	A bit above +2.2 °F	Normal
March	Above +3.2 °F	Normal

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.

Boston Harbor climate by monthClimate by month

Normal weather for each month (1991–2020 averages)

The best time to visit Boston Harbor is from July to August: highs of 76 °F, about 4 rainy days a month and 8 hours of sunshine a day.

47° 35°

JanJ
49° 35°

FebF
53° 37°

MarM
59° 39°

AprA
65° 44°

MayM
69° 47°

JunJ
75° 51°

JulJ
76° 51°

AugA
71° 48°

SepS
61° 44°

OctO
52° 39°

NovN
46° 35°

DecD

Highs and lows
Monthly rainfall
Best time

Month	High	Low	Rain	Rainy daysDays	Sun (h/day)
JanuaryJan	47°	35°	7.76 in	19	1.5
FebruaryFeb	49°	35°	5.06 in	14	3.6
MarchMar	53°	37°	5.65 in	18	3.7
AprilApr	59°	39°	3.58 in	15	5.4
MayMay	65°	44°	2.04 in	10	6.7
JuneJun	69°	47°	1.48 in	8	6.7
JulyJul	75°	51°	0.60 in	3	8.3
AugustAug	76°	51°	1.00 in	4	7.6
SeptemberSep	71°	48°	1.73 in	7	6.1
OctoberOct	61°	44°	4.74 in	14	2.8
NovemberNov	52°	39°	8.28 in	19	1.6
DecemberDec	46°	35°	7.87 in	18	1.0

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

A normal year brings 49.81 in of rain on about 148 days and about 1,650 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

Now49 °Ffeels like 44 °F

Tomorrow43 / 50 °F

It's 49 °F now (feels like 44 °F). Today, 44 °F to 54 °F; tomorrow, 43 °F to 50 °F.

Chance of rain

Today 75% 0.09 in
Thu 29 42% 0.09 in
Fri 30 31% 0.04 in
Sat 31 19%
Sun 1 4%
Mon 2 9%
Tue 3 7%

Today the chance of rain reaches 75%, with 0.09 in in total. The next day with likely rain is Thursday 29: 42% and 0.09 in.

Recent rain: last 24 hours, 0.09 in; last 3 days, 0.46 in; last 7 days, 1.28 in.

Humidity and dew point

Humidity79%

Dew point42 °F

Humidity is 79% now and the dew point is 42 °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

Now12 migood

Clouds38%

Visibility is good now (12 mi). No fog expected today.

UV index

Now0

Today's peak1low

Thu 29: 1 · Fri 30: 1 · Sat 31: 1

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

29.9030.00 29.88

Steady now (+0.02 inHg in 3 hours). Over the next 48 hours: −0.05 inHg. Steady pressure: anglers expect normal activity. Fast changes, either way, tend to affect fishing.

Air and pollen

Air qualityGood · 34

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	Rain	Max wind
Tue 27	Heavy drizzle	46 / 56 °F	0.17 in	12 mph WSW
Mon 26	Drizzle	46 / 58 °F	0.19 in	5 mph ESE
Sun 25	Rain	46 / 55 °F	1.00 in	5 mph ENE
Sat 24	Overcast	38 / 56 °F	0	3 mph ESE
Fri 23	Overcast	41 / 58 °F	0	4 mph W
Thu 22	Overcast	39 / 60 °F	0	4 mph W
Wed 21	Overcast	40 / 65 °F	0	2 mph ENE

Show all 30 days

Day	Sky	Low / high	Rain	Max wind
Tue 20	Mainly clear	42 / 65 °F	0	7 mph ENE
Mon 19	Overcast	43 / 63 °F	0	6 mph NNE
Sun 18	Overcast	40 / 62 °F	0	6 mph NE
Sat 17	Light drizzle	48 / 64 °F	0.02 in	11 mph WSW
Fri 16	Overcast	44 / 74 °F	0	11 mph WSW
Thu 15	Overcast	49 / 70 °F	0	5 mph ENE
Wed 14	Light drizzle	51 / 67 °F	0.01 in	7 mph SW
Tue 13	Overcast	43 / 63 °F	0	7 mph SW
Mon 12	Overcast	37 / 63 °F	0	6 mph WSW
Sun 11	Overcast	37 / 63 °F	0	3 mph WNW
Sat 10	Light drizzle	42 / 58 °F	0.02 in	7 mph N
Fri 9	Light drizzle	48 / 62 °F	0.01 in	16 mph WSW
Thu 8	Overcast	47 / 73 °F	0	8 mph WSW
Wed 7	Overcast	50 / 69 °F	0	6 mph NE
Tue 6	Overcast	52 / 69 °F	0	6 mph NE
Mon 5	Overcast	53 / 70 °F	0	4 mph WSW
Sun 4	Overcast	49 / 74 °F	0	2 mph E
Sat 3	Overcast	53 / 73 °F	0	6 mph ENE
Fri 2	Overcast	50 / 70 °F	0	8 mph WSW
Thu 1	Overcast	47 / 69 °F	0	3 mph N
Wed 30	Overcast	49 / 66 °F	0	6 mph NE
Tue 29	Light rain	55 / 61 °F	0.57 in	11 mph SSW
Mon 28	Light drizzle	41 / 64 °F	0.04 in	10 mph SW

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 Boston HarborQuestions

What's the weather like today in Boston Harbor?

Light rain, from 44 °F to 54 °F, with a light breeze from the southwest (7 mph) and a 75% chance of rain.

Will it rain tomorrow in Boston Harbor?

On Thursday 29 the chance of rain is 42% (0.09 in): light rain.

How warm will it be this week?

Between a low of 40 °F and a high of 55 °F; the warmest day, Tuesday 3.

What's the UV index today?

It reaches 1 (low). No special protection needed.

Is the pressure rising or falling?

It's 29.99 inHg and steady: +0.04 inHg over the last 24 hours.

When is the best time to visit Boston Harbor?

The best time to visit Boston Harbor is from July to August: highs of 76 °F, about 4 rainy days a month and 8 hours of sunshine a day.

What is the weather like in Boston Harbor in October?

In October, Boston Harbor normally sees highs of 61 °F and lows of 44 °F, with about 14 rainy days (4.74 in for the month) and 3 hours of sunshine a day. These are 1991–2020 averages.

What are the warmest and wettest months in Boston Harbor?

The warmest is August, with average highs of 76 °F, and the coldest January, with lows of 35 °F. The wettest is November (8.28 in) and the driest, July.

More about Boston Harbor today

Weather near Boston 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 9.0 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 6:13 pm (local time).

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