TidePlanet

Weather in Greenwich

14-day forecast · updated today, Thursday, October 29, at 1:20 am (EDT)
Now · clear 47 °F
Feels like
45 °F
Low / high
46 / 67 °F
Rain
1%
Wind
2 mph NW
↘ 30.31 inHg · falling

Today in Greenwich: clear sky, 46 °F to 67 °F, with a 1% chance of rain and a light air from the northwest (2 mph). Tomorrow, mainly clear, 47 °F to 69 °F and a 5% chance of rain. The warmest day of the week is Friday 30, at 69 °F. Next likely rain: Wednesday 4 (26%).

Temperatures for the next 14 days

Day by day

Day Sky Low / high Rain Max wind Max wave High tides Model
Today · 29 Clear sky 46 / 67 °F 1% 9 mph WSW 0.3 ft 1:53 am · 2:10 pm HRRR + NBM
Fri 30 Mainly clear 47 / 69 °F 5% 13 mph WNW 0.7 ft 2:47 am · 3:07 pm NBM
Sat 31 Overcast 42 / 60 °F 0% 7 mph NNW 0.1 ft 3:47 am · 4:09 pm NBM
Sun 1 Overcast 40 / 64 °F 0% 5 mph WSW 0.1 ft 3:50 am · 4:15 pm NBM
Mon 2 Overcast 45 / 67 °F 5% 5 mph WSW 0.1 ft 4:57 am · 5:24 pm NBM
Tue 3 Overcast 48 / 66 °F 12% 7 mph E 0.4 ft 6:03 am · 6:30 pm NBM
Wed 4 Partly cloudy 50 / 66 °F 26% · 0.29 in 9 mph ESE 0.3 ft 7:05 am · 7:32 pm NBM
Thu 5 Mainly clear 53 / 67 °F 32% · 0.42 in 10 mph ESE 0.1 ft 8:00 am · 8:27 pm NBM
Fri 6 Light rain 51 / 65 °F 35% · 0.46 in 9 mph E 0.1 ft 8:49 am · 9:16 pm NBM
Sat 7 Light rain 47 / 61 °F 27% · 0.09 in 9 mph NNW — 9:32 am · 10:01 pm NBM
Sun 8 Mainly clear 42 / 60 °F 19% · 0.13 in 8 mph NNW — 10:13 am · 10:43 pm NBM + ECMWF
Mon 9 Clear sky 37 / 56 °F 20% 8 mph NNW — 10:52 am · 11:24 pm ECMWF
Tue 10 Overcast 38 / 54 °F 12% 6 mph NE — 11:30 am ECMWF
Wed 11 Overcast 39 / 59 °F 20% 3 mph NE — 12:04 am · 12:09 pm ECMWF

Each hour comes from the best model for this spot: HRRR until Thursday 29 8:00 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 am3:00 am6:00 am9:00 am12:00 pm3:00 pm6:00 pm9:00 pm
Sky ClearClearClearClear skyClear skyClear skyClearClear
Temperature 48°47°46°52°64°67°61°56°
Chance of rain 0%0%0%0%0%1%1%1%
Rain 0.00 in0.00 in0.00 in0.00 in0.00 in0.00 in0.00 in0.00 in
Wind (mph) 1 WNW4 W6 W4 WSW9 SW9 SW6 SSW6 SW
Humidity 85%85%78%87%61%59%72%90%
UV 00013200
Model HRRRHRRRHRRRHRRRHRRRHRRRHRRRNBM

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.

Do the models agree? · High
High (°F) TodayFri 30Sat 31Sun 1Mon 2Tue 3Wed 4
ECMWF 67°68°58°61°68°69°72°
AIFS 68°67°58°60°67°70°72°
GFS 68°69°56°62°64°62°56°
ICON 66°69°56°64°71°71°58°
HRRR 67°63°—————
NBM 69°69°60°64°67°66°66°
Confidence highhighhighhighhighhighlow
Do the models agree? · Rain
Rain TodayFri 30Sat 31Sun 1Mon 2Tue 3Wed 4
ECMWF 0000000
AIFS 0000000
GFS 000000.01 in0.32 in
ICON 0000000
HRRR 00—————
NBM 0000000.25 in
Confidence highhighhighhighhighhighlow
Do the models agree? · Wind
Wind (mph) TodayFri 30Sat 31Sun 1Mon 2Tue 3Wed 4
ECMWF 92113307195199231020925
AIFS 91385788
GFS 10221626922716101812171119
ICON 92212317197196191028718
HRRR 9171529—————
NBM 91513217125859713915
Confidence highhighhighhighhighhighhigh

Chance of rain from the ensemble models

Model TodayFri 30Sat 31Sun 1Mon 2Tue 3Wed 4
ECMWF (51 scenarios) 0%6%0%0%10%18%18%
GFS (GEFS, 31 scenarios) 0%3%0%0%16%31%45%
NBM (NOAA) 1%5%0%0%5%12%26%
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: warmer and a bit wetter.

Next 6 weeks

When TemperatureTemp. Rain Typical high / low
Nov 2 – Nov 8Nov 2–Nov 8 Well above +7.6 °F Above +57% —
Nov 9 – Nov 15Nov 9–Nov 15 A bit above +0.9 °F Normal —
Nov 16 – Nov 22Nov 16–Nov 22 A bit above +2.3 °F Normal 52° / 39°
Nov 23 – Nov 29Nov 23–Nov 29 Above +2.7 °F A bit above +32% 49° / 38°
Nov 30 – Dec 6Nov 30–Dec 6 A bit above +2.0 °F A bit above +36% 47° / 35°

Coming months

When TemperatureTemp. Rain
November A bit above +1.1 °F A bit above +21%
December Above +2.7 °F A bit above +35%
January Above +4.0 °F A bit above +47%
February Above +2.9 °F A bit above +41%
March Above +3.1 °F A bit above +30%

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. The long-range sea temperature isn't usable at this spot (the model's grid cell falls on land).

Greenwich climate by monthClimate by month

Normal weather for each month (1991–2020 averages)

The best time to visit Greenwich is from May to September: highs of 70 °F to 84 °F, about 10 rainy days a month and 7 hours of sunshine a day.

Hurricane season: from July to August. In the last 30 years (1996–2025), 8 tropical cyclones passed within 93 mi of Greenwich, about 3 every 10 years. The most recent: Henri, in August 2021.

Month High Low Rain Rainy daysDays Sun (h/day) Water Waves Cyclones
JanuaryJan 38° 22° 3.54 in 8 3.4 39° 1.7 ft –
FebruaryFeb 41° 23° 3.06 in 7 4.7 35° 1.6 ft –
MarchMar 49° 30° 4.31 in 9 5.4 37° 1.6 ft –
AprilApr 60° 39° 4.09 in 9 6.0 44° 1.5 ft –
MayMay 70° 49° 3.87 in 10 6.6 54° 1.2 ft –
JuneJun 79° 58° 4.26 in 11 7.2 65° 1.0 ft –
JulyJul 84° 64° 4.11 in 10 7.7 72° 1.0 ft 3
AugustAug 82° 63° 4.09 in 11 6.8 74° 1.0 ft 3
SeptemberSep 75° 56° 4.35 in 8 5.9 71° 1.4 ft 2
OctoberOct 64° 45° 4.48 in 7 4.5 64° 1.7 ft –
NovemberNov 53° 36° 3.70 in 7 3.7 55° 1.7 ft –
DecemberDec 43° 28° 4.20 in 9 3.2 46° 1.7 ft –
Month Water Waves Cyclones
Jan 39° 1.7 ft –
Feb 35° 1.6 ft –
Mar 37° 1.6 ft –
Apr 44° 1.5 ft –
May 54° 1.2 ft –
Jun 65° 1.0 ft –
Jul 72° 1.0 ft 3
Aug 74° 1.0 ft 3
Sep 71° 1.4 ft 2
Oct 64° 1.7 ft –
Nov 55° 1.7 ft –
Dec 46° 1.7 ft –

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

A normal year brings 48.07 in of rain on about 105 days and about 2,000 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

Now47 °Ffeels like 45 °F
Tomorrow47 / 69 °F

It's 47 °F now (feels like 45 °F). Today, 46 °F to 67 °F; tomorrow, 47 °F to 69 °F.

Chance of rain

  • Today 1%
  • Fri 30 5%
  • Sat 31 0%
  • Sun 1 0%
  • Mon 2 5%
  • Tue 3 12%
  • Wed 4 26% 0.29 in

Today the chance of rain reaches 1%. The next day with likely rain is Wednesday 4: 26% and 0.29 in.

No rain in the last 7 days.

Humidity and dew point

Humidity85%
Dew point43 °F

Humidity is 85% 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

Now7.6 migood
Clouds0%

Visibility is good now (7.6 mi). No fog expected today.

UV index

Now0
Today's peak3moderate

Fri 30: 3 · Sat 31: 3 · Sun 1: 2

IndexLevelWhat to do
0–2lowNo special protection needed.
3–5moderateHat, sunglasses and sunscreen around midday.
6–7highSunscreen, hat and shade between 12 and 4 pm.
8–10very highAvoid the midday sun; reflection off the water adds to it.
11+extremeAvoid 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 Anglers expect normal activity
  • ↘ Falling · now Anglers say fish feed more before the change

Falling now (−0.03 inHg in 3 hours). Over the next 48 hours: −0.03 inHg. Falling pressure: anglers say fish feed more before the change. Fast changes, either way, tend to affect fishing.

Air and pollen

Air qualityModerate · 60
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.

DaySkyLow / highRainMax wind
Wed 28 Overcast41 / 60 °F06 mph ENE
Tue 27 Mainly clear49 / 61 °F09 mph N
Mon 26 Clear sky43 / 70 °F08 mph W
Sun 25 Clear sky38 / 66 °F06 mph WNW
Sat 24 Overcast38 / 61 °F06 mph NNW
Fri 23 Overcast45 / 60 °F011 mph N
Thu 22 Overcast45 / 64 °F012 mph N
Show all 30 days
DaySkyLow / highRainMax wind
Wed 21 Overcast46 / 63 °F010 mph NNE
Tue 20 Clear sky48 / 68 °F011 mph N
Mon 19 Mainly clear39 / 63 °F05 mph NNE
Sun 18 Clear sky38 / 57 °F08 mph N
Sat 17 Light drizzle42 / 62 °F0.04 in12 mph NNW
Fri 16 Heavy drizzle56 / 73 °F0.28 in12 mph SW
Thu 15 Overcast54 / 64 °F09 mph NNE
Wed 14 Light drizzle65 / 76 °F0.02 in11 mph WSW
Tue 13 Overcast56 / 71 °F011 mph S
Mon 12 Light drizzle53 / 71 °F0.01 in10 mph NNW
Sun 11 Rain54 / 60 °F1.72 in15 mph ENE
Sat 10 Overcast50 / 68 °F06 mph N
Fri 9 Overcast51 / 71 °F09 mph WNW
Thu 8 Mainly clear55 / 74 °F011 mph WSW
Wed 7 Clear sky44 / 65 °F09 mph SSW
Tue 6 Clear sky47 / 61 °F09 mph WNW
Mon 5 Overcast55 / 69 °F015 mph WNW
Sun 4 Light drizzle55 / 62 °F0.07 in9 mph ENE
Sat 3 Overcast59 / 71 °F09 mph NNE
Fri 2 Light drizzle67 / 83 °F0.04 in10 mph WSW
Thu 1 Light drizzle63 / 74 °F0.01 in8 mph SSW
Wed 30 Overcast58 / 74 °F06 mph WNW
Tue 29 Overcast57 / 69 °F06 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 GreenwichQuestions

What's the weather like today in Greenwich?

Clear sky, from 46 °F to 67 °F, with a light air from the northwest (2 mph) and a 1% chance of rain.

Will it rain tomorrow in Greenwich?

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

How warm will it be this week?

Between a low of 40 °F and a high of 69 °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 30.31 inHg and falling: −0.10 inHg over the last 24 hours.

When is the best time to visit Greenwich?

The best time to visit Greenwich is from May to September: highs of 70 °F to 84 °F, about 10 rainy days a month and 7 hours of sunshine a day.

What is the weather like in Greenwich in October?

In October, Greenwich normally sees highs of 64 °F and lows of 45 °F, with about 7 rainy days (4.48 in for the month) and 5 hours of sunshine a day. The sea is around 64 °F. These are 1991–2020 averages.

What are the warmest and wettest months in Greenwich?

The warmest is July, with average highs of 84 °F, and the coldest January, with lows of 22 °F. The wettest is October (4.48 in) and the driest, February.

When is hurricane season in Greenwich?

Hurricane season: from July to August. In the last 30 years (1996–2025), 8 tropical cyclones passed within 93 mi of Greenwich, about 3 every 10 years. The most recent: Henri, in August 2021.

More about Greenwich today

Weather near Greenwich

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 6.6 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 1:20 am (local time).

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