Weather in Ashmont

14-day forecast · updated today, Thursday, October 29, at 12:58 am (EDT)

Now · clear 44 °F

Feels like: 39 °F
Low / high: 44 / 66 °F
Rain: 2%
Wind: 6 mph SW

→ 30.32 inHg · steady

Today in Ashmont: clear sky, 44 °F to 66 °F, with a 2% chance of rain and a light breeze from the southwest (6 mph). Tomorrow, overcast, 49 °F to 68 °F and a 14% chance of rain. The warmest day of the week is Friday 30, at 68 °F. Next likely rain: Thursday 5 (31%).

Measured now at the airport

Boston/Logan (KBOS), 6.1 mi away · 1 h 4 min ago

Visibility9.9 mi or more

WeatherNothing to note

Temperature49 °F

Wind9 mph from the southwest

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

66° 44°
Today
68° 49°
Fri 30
55° 40°
Sat 31
60° 34°
Sun 1
66° 42°
Mon 2
61° 46°
Tue 3
63° 47°
Wed 4
64° 49°
Thu 5
62° 52°
Fri 6
58° 46°
Sat 7
57° 40°
Sun 8
54° 37°
Mon 9
52° 41°
Tue 10
59° 41°
Wed 11

Day by day

Day	Sky	Low / high	Rain	Max wind	Max wave	High tides	Model
Today · 29	Clear sky	44 / 66 °F	2%	13 mph SW	1.2 ft	1:46 am · 1:57 pm	HRRR + NBM
Fri 30	Overcast	49 / 68 °F	14%	13 mph W	1.3 ft	2:39 am · 2:51 pm	NBM
Sat 31	Clear sky	40 / 55 °F	0%	10 mph NW	1.2 ft	3:37 am · 3:49 pm	NBM
Sun 1	Clear sky	34 / 60 °F	1%	6 mph WSW	0.7 ft	3:39 am · 3:54 pm	NBM
Mon 2	Overcast	42 / 66 °F	5%	8 mph WSW	0.7 ft	4:45 am · 5:02 pm	NBM
Tue 3	Overcast	46 / 61 °F	11%	10 mph ENE	1.1 ft	5:51 am · 6:10 pm	NBM
Wed 4	Overcast	47 / 63 °F	18%	10 mph S	1.4 ft	6:53 am · 7:16 pm	NBM
Thu 5	Partly cloudy	49 / 64 °F	31% · 0.27 in	10 mph ESE	0.6 ft	7:51 am · 8:17 pm	NBM
Fri 6	Drizzle	52 / 62 °F	38% · 0.27 in	10 mph SSE	2.8 ft	8:42 am · 9:10 pm	NBM
Sat 7	Rain	46 / 58 °F	30% · 0.31 in	10 mph NNW	6.6 ft	9:27 am · 9:58 pm	NBM
Sun 8	Light drizzle	40 / 57 °F	22% · 0.10 in	9 mph NNW	6.1 ft	10:08 am · 10:42 pm	NBM + ECMWF
Mon 9	Clear sky	37 / 54 °F	24%	6 mph NW	2.4 ft	10:47 am · 11:23 pm	ECMWF
Tue 10	Overcast	41 / 52 °F	14%	7 mph NE	2.7 ft	11:25 am	ECMWF
Wed 11	Overcast	41 / 59 °F	17%	7 mph S	2.0 ft	12:04 am · 12:05 pm	ECMWF

Each hour comes from the best model for this spot: HRRR until Thursday 29 7:00 pm; then NBM until Sunday 8 8:00 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	Clear sky	Clear sky	Clear sky	Clear	Clear
Temperature	44°	44°	45°	51°	61°	66°	59°	56°
Chance of rain	0%	0%	1%	1%	1%	1%	0%	0%
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)	6 SW	7 SW	8 SW	10 SW	12 SW	12 SW	7 SW	9 SW
Humidity	90%	89%	90%	89%	71%	56%	66%	81%
UV	0	0	0	1	3	1	0	0
Model	HRRR	HRRR	HRRR	HRRR	HRRR	HRRR	HRRR	NBM

Do the models agree?

High confidence

The models agree for the next few days: the forecast is fairly solid.

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	66°	66°	51°	56°	67°	68°	71°
AIFS	66°	66°	53°	56°	67°	71°	72°
GFS	66°	67°	54°	57°	63°	56°	53°
ICON	67°	67°	52°	63°	70°	57°	58°
HRRR	66°	63°	—	—	—	—	—
NBM	68°	68°	55°	60°	66°	61°	63°
Confidence	high	high	high	high	high	low	low

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	0.02 in	0	0	0	0	0
GFS	0	0.01 in	0	0	0	0	0
ICON	0	0	0	0	0	0	0
HRRR	0	0	—	—	—	—	—
NBM	0	0	0	0	0	0	0
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	1328	1327	1328	824	1223	1324	1535
AIFS	13	13	12	8	11	14	14
GFS	1332	1732	1627	819	1228	1619	812
ICON	1224	1327	1124	817	921	1531	614
HRRR	1326	1628	—	—	—	—	—
NBM	1220	1321	1017	611	815	1016	1017
Confidence	high	high	high	high	high	high	medium

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%	2%	0%	0%	3%	13%	19%
GFS (GEFS, 31 scenarios)	0%	19%	0%	0%	10%	24%	35%
NBM (NOAA)	2%	14%	0%	1%	5%	11%	18%
Thunderstorm (NBM)	0%	1%	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: a bit 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 +4.3 °F	Normal	A bit above +0.7 °F	—
Nov 9 – Nov 15Nov 9–Nov 15	A bit above +1.3 °F	Normal	A bit above +1.3 °F	—
Nov 16 – Nov 22Nov 16–Nov 22	A bit above +2.2 °F	Normal	A bit above +1.3 °F	50° / 44°
Nov 23 – Nov 29Nov 23–Nov 29	A bit above +2.5 °F	A bit above +30%	A bit above +1.4 °F	48° / 43°
Nov 30 – Dec 6Nov 30–Dec 6	A bit above +2.2 °F	A bit above +22%	A bit above +1.4 °F	46° / 41°

Coming months

When	TemperatureTemp.	Rain	Sea
November	A bit above +1.4 °F	A bit above +21%	A bit above +1.4 °F
December	Above +3.1 °F	Normal	Above +2.2 °F
January	Above +4.1 °F	A bit above +37%	Above +2.5 °F
February	Above +3.2 °F	A bit above +29%	Above +2.7 °F
March	Above +3.1 °F	A bit above +22%	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.

Ashmont climate by monthClimate by month

Normal weather for each month (1991–2020 averages)

The best time to visit Ashmont is from June to September: highs of 76 °F to 84 °F, about 9 rainy days a month and 7 hours of sunshine a day.

Hurricane season: from July to August, peaking in July. In the last 30 years (1996–2025), 6 tropical cyclones passed within 93 mi of Ashmont, about 2 every 10 years. The most recent: Henri, in August 2021.

37° 20°

JanJ
40° 22°

FebF
47° 29°

MarM
58° 38°

AprA
69° 48°

MayM
78° 57°

JunJ
84° 64°

JulJ
83° 63°

AugA
76° 55°

SepS
64° 44°

OctO
53° 35°

NovN
43° 26°

DecD

Highs and lows
Monthly rainfall
Best time

Month	High	Low	Rain	Rainy daysDays	Sun (h/day)	Water	Waves	Cyclones
JanuaryJan	37°	20°	3.77 in	8	3.5	41°	4.3 ft	–
FebruaryFeb	40°	22°	3.27 in	7	4.9	38°	4.1 ft	–
MarchMar	47°	29°	4.66 in	9	5.3	38°	4.2 ft	–
AprilApr	58°	38°	3.92 in	9	6.1	42°	3.6 ft	–
MayMay	69°	48°	3.22 in	10	6.3	50°	2.8 ft	–
JuneJun	78°	57°	3.76 in	10	6.7	58°	2.3 ft	–
JulyJul	84°	64°	3.48 in	10	7.2	65°	2.0 ft	3
AugustAug	83°	63°	3.66 in	9	7.1	66°	2.1 ft	2
SeptemberSep	76°	55°	3.61 in	8	5.9	63°	3.0 ft	1
OctoberOct	64°	44°	4.49 in	8	4.4	56°	3.7 ft	–
NovemberNov	53°	35°	3.96 in	8	3.4	50°	3.9 ft	–
DecemberDec	43°	26°	4.38 in	9	2.9	46°	4.0 ft	–

Month	Water	Waves	Cyclones
Jan	41°	4.3 ft	–
Feb	38°	4.1 ft	–
Mar	38°	4.2 ft	–
Apr	42°	3.6 ft	–
May	50°	2.8 ft	–
Jun	58°	2.3 ft	–
Jul	65°	2.0 ft	3
Aug	66°	2.1 ft	2
Sep	63°	3.0 ft	1
Oct	56°	3.7 ft	–
Nov	50°	3.9 ft	–
Dec	46°	4.0 ft	–

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

A normal year brings 46.19 in of rain on about 105 days and about 1,950 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

Now44 °Ffeels like 39 °F

Tomorrow49 / 68 °F

It's 44 °F now (feels like 39 °F). Today, 44 °F to 66 °F; tomorrow, 49 °F to 68 °F.

Chance of rain

Today 2%
Fri 30 14%
Sat 31 0%
Sun 1 1%
Mon 2 5%
Tue 3 11%
Wed 4 18%

Today the chance of rain reaches 2%. The next day with likely rain is Thursday 5: 31% and 0.27 in.

No rain in the last 7 days.

Humidity and dew point

Humidity89%

Dew point41 °F

Humidity is 89% now and the dew point is 41 °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

Now8.5 migood

Clouds0%

Visibility is good now (8.5 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 29.94

Steady now (−0.02 inHg in 3 hours). Over the next 48 hours: −0.14 inHg. Steady pressure: anglers expect normal activity. Fast changes, either way, tend to affect fishing.

Air and pollen

Air qualityModerate · 53

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	38 / 54 °F	8 mph NNW
Tue 27	Mainly clear	43 / 56 °F	11 mph N
Mon 26	Clear sky	41 / 69 °F	10 mph WSW
Sun 25	Clear sky	35 / 63 °F	9 mph SW
Sat 24	Clear sky	34 / 57 °F	5 mph WNW
Fri 23	Clear sky	41 / 54 °F	13 mph N
Thu 22	Overcast	47 / 60 °F	14 mph N

Show all 30 days

Day	Sky	Low / high	Rain	Max wind
Wed 21	Overcast	48 / 54 °F	0	16 mph NNE
Tue 20	Overcast	43 / 60 °F	0	14 mph NNE
Mon 19	Clear sky	37 / 56 °F	0	7 mph NE
Sun 18	Clear sky	36 / 53 °F	0	8 mph N
Sat 17	Light drizzle	41 / 62 °F	0.04 in	14 mph NNW
Fri 16	Light rain	46 / 69 °F	0.41 in	15 mph SSW
Thu 15	Partly cloudy	47 / 61 °F	0	13 mph NNW
Wed 14	Overcast	58 / 76 °F	0	12 mph W
Tue 13	Rain	55 / 61 °F	0.50 in	10 mph ESE
Mon 12	Light rain	52 / 69 °F	0.27 in	13 mph N
Sun 11	Rain	44 / 58 °F	0.97 in	11 mph ESE
Sat 10	Overcast	48 / 62 °F	0	9 mph WNW
Fri 9	Mainly clear	51 / 67 °F	0	15 mph W
Thu 8	Light drizzle	55 / 71 °F	0.01 in	12 mph WSW
Wed 7	Clear sky	41 / 64 °F	0	11 mph SW
Tue 6	Clear sky	46 / 61 °F	0	13 mph WNW
Mon 5	Overcast	53 / 69 °F	0	15 mph WNW
Sun 4	Light drizzle	52 / 62 °F	0.11 in	10 mph ENE
Sat 3	Overcast	55 / 66 °F	0	9 mph NNE
Fri 2	Light drizzle	67 / 83 °F	0.04 in	13 mph SW
Thu 1	Overcast	58 / 75 °F	0	12 mph SW
Wed 30	Light drizzle	60 / 67 °F	0.02 in	6 mph SSW
Tue 29	Light drizzle	56 / 66 °F	0.01 in	9 mph NW

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 AshmontQuestions

What's the weather like today in Ashmont?

Clear sky, from 44 °F to 66 °F, with a light breeze from the southwest (6 mph) and a 2% chance of rain.

Will it rain tomorrow in Ashmont?

On Friday 30 the chance of rain is 14% (0.00 in): overcast.

How warm will it be this week?

Between a low of 34 °F and a high of 68 °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 30.32 inHg and steady: −0.12 inHg over the last 24 hours.

When is the best time to visit Ashmont?

The best time to visit Ashmont is from June to September: highs of 76 °F to 84 °F, about 9 rainy days a month and 7 hours of sunshine a day.

What is the weather like in Ashmont in October?

In October, Ashmont normally sees highs of 64 °F and lows of 44 °F, with about 8 rainy days (4.49 in for the month) and 4 hours of sunshine a day. The sea is around 56 °F. These are 1991–2020 averages.

What are the warmest and wettest months in Ashmont?

The warmest is July, with average highs of 84 °F, and the coldest January, with lows of 20 °F. The wettest is March (4.66 in) and the driest, May.

When is hurricane season in Ashmont?

Hurricane season: from July to August, peaking in July. In the last 30 years (1996–2025), 6 tropical cyclones passed within 93 mi of Ashmont, about 2 every 10 years. The most recent: Henri, in August 2021.

More about Ashmont today

Weather near Ashmont

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 4.2 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 12:58 am (local time).

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