Weather in Port William

14-day forecast · updated today, Thursday, October 29, at 3:44 am (GMT)

Now · partly cloudy 55 °F

Feels like: 54 °F
Low / high: 54 / 57 °F
Rain: 4%
Wind: 4 mph S

→ 30.24 inHg · steady

Today in Port William: overcast, 54 °F to 57 °F, with a 4% chance of rain and a light breeze from the south (4 mph). Tomorrow, overcast, 54 °F to 56 °F and a 2% chance of rain. The warmest day of the week is Thursday 29, at 57 °F. No significant rain expected over the next 7 days.

Temperatures for the next 14 days

57° 54°
Today
56° 54°
Fri 30
55° 53°
Sat 31
55° 49°
Sun 1
52° 42°
Mon 2
53° 41°
Tue 3
52° 46°
Wed 4
50° 46°
Thu 5
49° 43°
Fri 6
50° 45°
Sat 7
48° 44°
Sun 8
52° 46°
Mon 9
53° 51°
Tue 10
54° 51°
Wed 11

Day by day

Day	Sky	Low / high	Rain	Max wind	Max wave	High tides	Model
Today · 29	Overcast	54 / 57 °F	4%	13 mph SSE	2.8 ft	12:59 am · 1:18 pm	ICON-EU
Fri 30	Overcast	54 / 56 °F	2%	14 mph SSE	3.6 ft	1:48 am · 2:06 pm	ICON-EU
Sat 31	Overcast	53 / 55 °F	4%	10 mph SSE	2.2 ft	2:43 am · 2:59 pm	ICON-EU
Sun 1	Overcast	49 / 55 °F	2%	8 mph NNW	1.1 ft	3:44 am · 3:59 pm	ICON-EU
Mon 2	Overcast	42 / 52 °F	0%	6 mph NE	0.4 ft	4:57 am · 5:10 pm	ICON-EU + ECMWF
Tue 3	Overcast	41 / 53 °F	2%	8 mph NE	0.1 ft	6:19 am · 6:29 pm	ECMWF
Wed 4	Overcast	46 / 52 °F	2%	6 mph ENE	0.3 ft	7:39 am · 7:44 pm	ECMWF
Thu 5	Overcast	46 / 50 °F	4%	11 mph ENE	1.4 ft	8:43 am · 8:47 pm	ECMWF
Fri 6	Overcast	43 / 49 °F	11%	12 mph E	1.9 ft	9:34 am · 9:38 pm	ECMWF
Sat 7	Overcast	45 / 50 °F	12%	11 mph E	2.6 ft	10:14 am · 10:21 pm	ECMWF
Sun 8	Overcast	44 / 48 °F	27%	14 mph ENE	2.2 ft	10:49 am · 10:59 pm	ECMWF
Mon 9	Light drizzle	46 / 52 °F	27% · 0.19 in	14 mph E	2.6 ft	11:21 am · 11:34 pm	ECMWF
Tue 10	Light drizzle	51 / 53 °F	27% · 0.14 in	12 mph ENE	1.7 ft	11:53 am	ECMWF
Wed 11	Light drizzle	51 / 54 °F	31% · 0.20 in	13 mph ESE	2.2 ft	12:09 am · 12:25 pm	ECMWF

Each hour comes from the best model for this spot: ICON-EU until Monday 2 7:00 pm; then ECMWF until Thursday 12 3:00 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	Overcast	Partly cloudy	Partly cloudy	Partly cloudy	Overcast	Overcast	Overcast	Overcast
Temperature	55°	55°	55°	55°	57°	56°	55°	55°
Chance of rain	0%	0%	0%	0%	0%	4%	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)	8 SW	4 SSW	5 S	5 S	10 S	13 SSE	9 SE	10 SE
Humidity	90%	91%	93%	92%	88%	88%	90%	94%
UV	0	0	0	0	1	0	0	0
Model	ICON-EU	ICON-EU	ICON-EU	ICON-EU	ICON-EU	ICON-EU	ICON-EU	ICON-EU

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	57°	55°	53°	55°	51°	53°	52°
AIFS	56°	55°	54°	52°	49°	50°	49°
GFS	57°	56°	56°	55°	51°	53°	52°
ICON	57°	56°	55°	55°	52°	51°	49°
ARPEGE	57°	56°	54°	54°	—	—	—
ICON-EU	57°	56°	55°	55°	—	—	—
Confidence	high	high	high	high	high	high	high

Do the models agree? · Rain
Rain	Today	Fri 30	Sat 31	Sun 1	Mon 2	Tue 3	Wed 4
ECMWF	0	0	0	0.01 in	0	0	0
AIFS	0	0	0	0.02 in	0	0	0
GFS	0.02 in	0	0	0	0	0	0
ICON	0	0	0	0	0	0	0
ARPEGE	0	0	0.01 in	0	—	—	—
ICON-EU	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	1321	1525	1117	923	618	813	611
AIFS	15	16	10	9	9	10	13
GFS	1623	1525	1316	1316	68	814	710
ICON	1220	1322	915	814	47	915	48
ARPEGE	1422	1423	1423	1117	—	—	—
ICON-EU	1319	1421	1015	813	—	—	—
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)	4%	2%	4%	2%	0%	2%	2%
GFS (GEFS, 31 scenarios)	65%	0%	14%	3%	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: normal temperatures, normal rain and a slightly warmer sea.

Next 6 weeks

When	TemperatureTemp.	Rain	Sea	Typical high / low
Nov 2 – Nov 8Nov 2–Nov 8	Normal −0.5 °F	Below −80%	A bit above +0.5 °F	—
Nov 9 – Nov 15Nov 9–Nov 15	Normal +0.4 °F	Normal	A bit above +0.7 °F	—
Nov 16 – Nov 22Nov 16–Nov 22	A bit above +0.9 °F	A bit above +25%	A bit above +0.5 °F	50° / 48°
Nov 23 – Nov 29Nov 23–Nov 29	Normal +0.7 °F	Normal	A bit above +0.7 °F	49° / 47°
Nov 30 – Dec 6Nov 30–Dec 6	Normal +0.2 °F	Normal	A bit above +0.7 °F	48° / 46°

Coming months

When	TemperatureTemp.	Rain	Sea
November	Normal +0.7 °F	Normal	A bit above +1.4 °F
December	A bit above +1.3 °F	Normal	A bit above +1.3 °F
January	A bit above +1.3 °F	Normal	A bit above +1.3 °F
February	A bit above +0.9 °F	Normal	A bit above +1.3 °F
March	A bit above +1.3 °F	Normal	A bit above +1.3 °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.

Port William climate by monthClimate by month

Normal weather for each month (1991–2020 averages)

The best time to visit Port William is from June to August: highs of 62 °F to 65 °F, about 14 rainy days a month and 5 hours of sunshine a day.

44° 35°

JanJ
45° 35°

FebF
48° 37°

MarM
53° 39°

AprA
58° 43°

MayM
62° 49°

JunJ
65° 52°

JulJ
64° 51°

AugA
61° 48°

SepS
55° 44°

OctO
49° 39°

NovN
45° 35°

DecD

Highs and lows
Monthly rainfall
Best time

Month	High	Low	Rain	Rainy daysDays	Sun (h/day)	Water	Waves
JanuaryJan	44°	35°	4.31 in	17	1.1	47°	4.3 ft
FebruaryFeb	45°	35°	3.36 in	14	2.2	46°	4.3 ft
MarchMar	48°	37°	3.13 in	13	3.6	45°	3.1 ft
AprilApr	53°	39°	2.65 in	11	5.2	47°	2.5 ft
MayMay	58°	43°	2.51 in	11	6.3	50°	2.4 ft
JuneJun	62°	49°	2.94 in	12	6.0	54°	2.1 ft
JulyJul	65°	52°	3.02 in	15	5.5	57°	1.9 ft
AugustAug	64°	51°	4.04 in	15	4.8	59°	2.5 ft
SeptemberSep	61°	48°	3.67 in	13	4.3	59°	2.9 ft
OctoberOct	55°	44°	5.01 in	16	2.5	56°	3.6 ft
NovemberNov	49°	39°	5.11 in	16	1.3	53°	4.0 ft
DecemberDec	45°	35°	4.67 in	16	0.8	50°	4.8 ft

Month	Water	Waves
Jan	47°	4.3 ft
Feb	46°	4.3 ft
Mar	45°	3.1 ft
Apr	47°	2.5 ft
May	50°	2.4 ft
Jun	54°	2.1 ft
Jul	57°	1.9 ft
Aug	59°	2.5 ft
Sep	59°	2.9 ft
Oct	56°	3.6 ft
Nov	53°	4.0 ft
Dec	50°	4.8 ft

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

A normal year brings 44.43 in of rain on about 169 days and about 1,300 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

Now55 °Ffeels like 54 °F

Tomorrow54 / 56 °F

It's 55 °F now (feels like 54 °F). Today, 54 °F to 57 °F; tomorrow, 54 °F to 56 °F.

Chance of rain

Today 4%
Fri 30 2%
Sat 31 4%
Sun 1 2%
Mon 2 0%
Tue 3 2%
Wed 4 2%

Today the chance of rain reaches 4%. No significant rain expected this week.

Recent rain: last 24 hours, 0.02 in; last 3 days, 0.51 in; last 7 days, 2.48 in.

Humidity and dew point

Humidity92%

Dew point53 °F

Humidity is 92% now and the dew point is 53 °F. The temperature is very close to the dew point: fog may form.

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

Clouds67%

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

UV index

Now0

Today's peak1low

Fri 30: 1 · Sat 31: 1 · Sun 1: 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

30.0030.2030.40 30.42

Steady now (+0.01 inHg in 3 hours). Over the next 48 hours: +0.18 inHg. Steady pressure: anglers expect normal activity. Fast changes, either way, tend to affect fishing.

Air and pollen

Air qualityFair · 23

PollenNoneToday, at most none.

Pollen: Copernicus CAMS model (a rough guide, not a pollen trap). Levels use each type's usual thresholds.

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
Wed 28	Light drizzle	52 / 57 °F	0.07 in	27 mph SW
Tue 27	Drizzle	51 / 59 °F	0.12 in	33 mph SW
Mon 26	Light rain	50 / 59 °F	0.37 in	32 mph S
Sun 25	Heavy drizzle	49 / 51 °F	0.30 in	42 mph W
Sat 24	Rain	47 / 57 °F	0.77 in	40 mph SW
Fri 23	Rain	45 / 47 °F	0.86 in	20 mph NNW
Thu 22	Light drizzle	45 / 52 °F	0.04 in	12 mph W

Show all 30 days

Day	Sky	Low / high	Rain	Max wind
Wed 21	Light rain	48 / 54 °F	0.41 in	30 mph W
Tue 20	Light rain	52 / 55 °F	0.76 in	15 mph SE
Mon 19	Light drizzle	42 / 56 °F	0.04 in	15 mph ENE
Sun 18	Mainly clear	40 / 52 °F	0	6 mph ENE
Sat 17	Mainly clear	42 / 52 °F	0	8 mph N
Fri 16	Light drizzle	47 / 53 °F	0.08 in	15 mph WNW
Thu 15	Drizzle	54 / 60 °F	0.19 in	27 mph SW
Wed 14	Overcast	53 / 60 °F	0	29 mph SSW
Tue 13	Heavy drizzle	54 / 62 °F	0.22 in	28 mph WSW
Mon 12	Drizzle	55 / 61 °F	0.09 in	23 mph SSE
Sun 11	Overcast	47 / 55 °F	0	15 mph SW
Sat 10	Light drizzle	50 / 53 °F	0.18 in	26 mph WNW
Fri 9	Heavy drizzle	53 / 60 °F	0.36 in	24 mph W
Thu 8	Rain	47 / 58 °F	0.75 in	22 mph WSW
Wed 7	Light drizzle	47 / 54 °F	0.05 in	17 mph NW
Tue 6	Light drizzle	50 / 57 °F	0.04 in	9 mph NNW
Mon 5	Light drizzle	55 / 62 °F	0.06 in	19 mph WSW
Sun 4	Light drizzle	56 / 62 °F	0.01 in	19 mph SW
Sat 3	Overcast	51 / 58 °F	0	14 mph WSW
Fri 2	Light rain	56 / 63 °F	0.39 in	27 mph SSW
Thu 1	Overcast	56 / 59 °F	0	17 mph SSW
Wed 30	Light rain	59 / 64 °F	0.40 in	31 mph SSE
Tue 29	Heavy drizzle	56 / 65 °F	0.24 in	28 mph ESE

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 Port WilliamQuestions

What's the weather like today in Port William?

Overcast, from 54 °F to 57 °F, with a light breeze from the south (4 mph) and a 4% chance of rain.

Will it rain tomorrow in Port William?

On Friday 30 the chance of rain is 2% (0.00 in): overcast.

How warm will it be this week?

Between a low of 41 °F and a high of 57 °F; the warmest day, Thursday 29.

What's the UV index today?

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

Is the pressure rising or falling?

It's 30.24 inHg and steady: +0.35 inHg over the last 24 hours.

When is the best time to visit Port William?

The best time to visit Port William is from June to August: highs of 62 °F to 65 °F, about 14 rainy days a month and 5 hours of sunshine a day.

What is the weather like in Port William in October?

In October, Port William normally sees highs of 55 °F and lows of 44 °F, with about 16 rainy days (5.01 in for the month) and 2 hours of sunshine a day. The sea is around 56 °F. These are 1991–2020 averages.

What are the warmest and wettest months in Port William?

The warmest is July, with average highs of 65 °F, and the coldest February, with lows of 35 °F. The wettest is November (5.11 in) and the driest, May.

More about Port William today

Weather near Port William

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 3.4 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 3:44 am (local time).

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