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Cities / United States
/ Connecticut
☀️ Greenwich weather
Clear sky. .
Feels like 26° Wind 3 km/h NE Humidity 31% Pressure 1023 hPa UV 1 Air Fair ☀ 06:18 - 19:32
Right now it is 25° in Greenwich with clear skies and today's high is 25° with an overnight low of 17° . The sun rises at 06:18 and sets at 19:32, giving 13h 14m of daylight. Over the coming week highs range from 21° to 29° .
Greenwich is in Connecticut, United States, sitting 28 m above sea level, with a population of about 13,000. Local time is America/New_York (UTC−4), and every time on this page is shown in it.
Next 24 hours - temperature
15°
21°
26°
25°
16°
13:00 · 24.9° · 0 mm
14:00 · 24.4° · 0 mm
15:00 · 24.7° · 0 mm
16:00 · 25° · 0 mm
17:00 · 25.3° · 0 mm
18:00 · 24.6° · 0 mm
19:00 · 22.8° · 0 mm
20:00 · 20.5° · 0 mm
21:00 · 19.3° · 0 mm
22:00 · 18.8° · 0 mm
23:00 · 18.5° · 0 mm
00:00 · 18° · 0 mm
01:00 · 17.2° · 0 mm
02:00 · 16.9° · 0 mm
03:00 · 16.4° · 0 mm
04:00 · 16.1° · 0 mm
05:00 · 16.4° · 0 mm
06:00 · 15.6° · 0 mm
07:00 · 15.7° · 0 mm
08:00 · 19.2° · 0 mm
09:00 · 21.8° · 0 mm
10:00 · 23.6° · 0 mm
11:00 · 24.6° · 0 mm
12:00 · 25° · 0 mm
Precipitation
13:00 · 0 mm
13:00
14:00 · 0 mm
15:00 · 0 mm
16:00 · 0 mm
16:00
17:00 · 0 mm
18:00 · 0 mm
19:00 · 0 mm
19:00
20:00 · 0 mm
21:00 · 0 mm
22:00 · 0 mm
22:00
23:00 · 0 mm
00:00 · 0 mm
01:00 · 0 mm
01:00
02:00 · 0 mm
03:00 · 0 mm
04:00 · 0 mm
04:00
05:00 · 0 mm
06:00 · 0 mm
07:00 · 0 mm
07:00
08:00 · 0 mm
09:00 · 0 mm
10:00 · 0 mm
10:00
11:00 · 0 mm
12:00 · 0 mm
Hour by hour
TIME TEMP FEELS RAIN CONDITIONS
13:00
☀️
24.9°
23.6°
-
Clear sky
14:00
☀️
24.4°
22.1°
-
Clear sky
15:00
☀️
24.7°
22.7°
-
Clear sky
16:00
☀️
25°
23.2°
-
Clear sky
17:00
☀️
25.3°
23.5°
-
Clear sky
18:00
☀️
24.6°
21.8°
-
Clear sky
19:00
☀️
22.8°
20.5°
-
Clear sky
20:00
☀️
20.5°
18.3°
-
Clear sky
21:00
☀️
19.3°
16.9°
-
Clear sky
22:00
☁️
18.8°
17.2°
-
Overcast
23:00
⛅
18.5°
17.4°
-
Partly cloudy
00:00
☁️
18°
17.2°
-
Overcast
☀️
TodayAugust 29th
Avg 21° Low 17° at 06:00
High 25° at 17:00
Feels 23° Wind ~19 km/h
Clear
00:00
22°
02:00
20°
04:00
18°
06:00
17°
08:00
18°
10:00
23°
12:00
24°
14:00
24°
16:00
25°
18:00
25°
20:00
21°
22:00
19°
☁️
SundayAugust 30th
Avg 21° Low 16° at 06:00
High 26° at 13:00
Wind ~18 km/h
Cloudy
Cloudy
Cloudy
00:00
18°
02:00
17°
04:00
16°
06:00
16°
08:00
19°
10:00
24°
12:00
25°
14:00
24°
16:00
24°
18:00
25°
20:00
23°
22:00
23°
☁️
MondayAugust 31st
Avg 22° Low 19° at 07:00
High 25° at 14:00
Wind ~11 km/h
Cloudy
Cloudy
Cloudy
00:00
22°
02:00
22°
04:00
21°
06:00
20°
08:00
20°
10:00
21°
12:00
24°
14:00
25°
16:00
25°
18:00
25°
20:00
22°
22:00
22°
🌧️
TuesdaySeptember 1st
Avg 23° Low 21° at 23:00
High 29° at 15:00
5.6 mm rain Feels 31° Wind ~16 km/h
Cloudy
Rain
Cloudy
Rain
Cloudy
00:00
22°
02:00
22°
04:00
21°
06:00
21°
08:00
22°
10:00
22°
0.5mm
12:00
25°
14:00
29°
16:00
28°
1.1mm
18:00
26°
1.2mm
20:00
24°
22:00
23°
🌧️
WednesdaySeptember 2nd
Avg 19° Low 17° at 06:00
High 21° at 15:00
11.1 mm rain Wind ~18 km/h
Cloudy
Rain
Cloudy
Rain
00:00
20°
02:00
18°
04:00
17°
0.3mm
06:00
17°
0.3mm
08:00
17°
1.8mm
10:00
17°
0.8mm
12:00
19°
0.1mm
14:00
21°
16:00
21°
18:00
21°
20:00
19°
0.6mm
22:00
19°
0.2mm
🌧️
ThursdaySeptember 3rd
Avg 20° Low 19° at 00:00
High 22° at 17:00
42 mm rain Feels 24° Wind ~16 km/h
Cloudy
Rain
00:00
19°
02:00
19°
04:00
19°
0.4mm
06:00
19°
6mm
08:00
19°
6mm
10:00
20°
5.9mm
12:00
21°
1mm
14:00
22°
1mm
16:00
22°
0.2mm
18:00
22°
0.2mm
20:00
21°
0.2mm
22:00
21°
0.3mm
☁️
FridaySeptember 4th
Avg 21° Low 18° at 07:00
High 24° at 15:00
0.3 mm rain Wind ~14 km/h
Cloudy
Rain
Cloudy
Partly Cloudy
00:00
22°
02:00
22°
04:00
20°
0.1mm
06:00
18°
08:00
18°
10:00
19°
12:00
21°
14:00
24°
16:00
24°
18:00
22°
20:00
20°
22:00
20°
🌤️
SaturdaySeptember 5th
Avg 23° Low 19° at 04:00
High 28° at 16:00
Wind ~14 km/h
Partly Cloudy
Clear
Clear
Partly Cloudy
00:00
20°
02:00
20°
04:00
19°
06:00
20°
08:00
20°
10:00
24°
12:00
26°
14:00
27°
16:00
28°
18:00
27°
20:00
24°
22:00
22°
☁️
SundaySeptember 6th
Avg 21° Low 17° at 05:00
High 24° at 13:00
Wind ~14 km/h
Clear
Partly Cloudy
Cloudy
00:00
21°
02:00
19°
04:00
17°
06:00
17°
08:00
18°
10:00
22°
12:00
24°
14:00
24°
16:00
24°
18:00
23°
20:00
21°
22:00
21°
☁️
MondaySeptember 7th
Avg 20° Low 19° at 08:00
High 22° at 17:00
Wind ~15 km/h
Cloudy
00:00
21°
02:00
20°
04:00
20°
06:00
19°
08:00
19°
10:00
20°
12:00
20°
14:00
21°
16:00
22°
18:00
22°
20:00
21°
22:00
21°
🌦️
TuesdaySeptember 8th
Avg 23° Low 20° at 06:00
High 28° at 15:00
1.8 mm rain Wind ~16 km/h
Cloudy
Rain
Cloudy
Rain
Cloudy
00:00
21°
02:00
21°
04:00
20°
0.1mm
06:00
20°
0.4mm
08:00
20°
0.4mm
10:00
23°
12:00
25°
0.1mm
14:00
27°
0.1mm
16:00
27°
18:00
26°
20:00
25°
22:00
24°
🌦️
WednesdaySeptember 9th
Avg 29° Low 23° at 05:00
High 36° at 15:00
1.8 mm rain Feels 38° Wind ~12 km/h
Clear
Rain
Clear
Rain
00:00
24°
02:00
24°
04:00
23°
0.2mm
06:00
23°
0.1mm
08:00
24°
0.1mm
10:00
29°
12:00
33°
14:00
36°
16:00
36°
18:00
34°
20:00
31°
22:00
28°
0.3mm
🌤️
ThursdaySeptember 10th
Avg 26° Low 20° at 23:00
High 30° at 11:00
Wind ~20 km/h
Cloudy
Clear
Partly Cloudy
Cloudy
00:00
26°
02:00
25°
04:00
25°
06:00
25°
08:00
26°
10:00
29°
12:00
30°
14:00
29°
16:00
29°
18:00
27°
20:00
24°
22:00
21°
☀️
FridaySeptember 11th
Avg 20° Low 15° at 06:00
High 25° at 15:00
Feels 23° Wind ~18 km/h
Clear
Cloudy
00:00
19°
02:00
18°
04:00
16°
06:00
15°
08:00
16°
10:00
20°
12:00
23°
14:00
24°
16:00
24°
18:00
23°
20:00
20°
22:00
18°
☀️
SaturdaySeptember 12th
Avg 20° Low 14° at 05:00
High 27° at 16:00
Wind ~12 km/h
Partly Cloudy
Clear
Clear
00:00
17°
02:00
16°
04:00
15°
06:00
14°
08:00
16°
10:00
20°
12:00
24°
14:00
26°
16:00
27°
18:00
26°
20:00
22°
22:00
21°
☀️
SundaySeptember 13th
Avg 19° Low 14° at 23:00
High 24° at 14:00
Feels 20° Wind ~18 km/h
Clear
00:00
20°
02:00
20°
04:00
18°
06:00
17°
08:00
17°
10:00
20°
12:00
23°
14:00
24°
16:00
23°
18:00
21°
20:00
17°
22:00
14°
Sun
☀️ Sunrise 06:18 · Sunset 19:32
13h 14m of daylight · America/New_York
Air quality
PM2.5 12.6 µg/m³ - Fair
Fine for almost everyone; unusually sensitive people may notice it on a long run.
Source: Copernicus CAMS, updated hourly.
Common questions about Greenwich weather
Will it rain in Greenwich today?
No rain is in the forecast for Greenwich today.
What is the temperature in Greenwich right now?
It is 25° in Greenwich right now. Today runs between a low of 17° and a high of 25° .
What time is sunrise and sunset in Greenwich?
The sun rises at 06:18 and sets at 19:32 local time in Greenwich today, giving 13h 14m of daylight.
What is the air quality in Greenwich?
PM2.5 in Greenwich is currently 12.6 µg/m³, which counts as Fair on the European air-quality index. Fine for almost everyone; unusually sensitive people may notice it on a long run.
How accurate is the Greenwich forecast, and how far ahead does it go?
This page shows 16 days ahead, refreshed every hour. It blends ECMWF, NOAA GFS and whichever national high-resolution model covers Greenwich best. The first three days are the dependable part - day one is usually within a degree or two - and accuracy falls off steadily after day five, so read the far end as a trend rather than a plan. We publish our measured error against real station observations on the accuracy page.
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© 2026 WeatherMetro · Weather data: ECMWF, NOAA, DWD, Météo-France, ECCC, MeteoSwiss and others (CC-BY 4.0) · Air quality & history: Copernicus CAMS / C3S · Location data: GeoNames (CC-BY) · Alerts: NWS, MeteoAlarm, ECCC