What is the weather in Greenwich right now?

Current weather in Greenwich is overcast clouds.

Where can I find the hourly weather forecast for Greenwich?

This page shows hourly weather forecast for Greenwich, including temperature, wind, precipitation, humidity and cloud cover.

Is the weather forecast for Greenwich updated regularly?

Weather data for Greenwich is updated regularly with the latest available observations and forecasts.

Now · 5:21 AM

Greenwich Weather & Hourly Forecast

United States · Connecticut · 06830

55°F

Overcast night

Feels like: 47°F

💧 Humidity 64% 🌡 Pressure 30.15 inHg 💨 Wind 13 mph 👁 Visibility 25.2 mi ☁ Clouds 100% ☀️ UV index 0.0 · Low 🌅 Sunrise 6:43 AM 🌇 Sunset 6:48 PM

Hourly Forecast for Greenwich

Today

6:00 AM

Overcast night

56° 💧 None 💨 12 mph H 65%30.15 inHg

9:00 AM

Mostly cloudy

59° 💧 None 💨 12 mph H 60%30.12 inHg

12:00 PM

Overcast

65° 💧 None 💨 15 mph H 54%30.09 inHg

3:00 PM

Overcast

68° 💧 None 💨 16 mph H 50%30.00 inHg

6:00 PM

Overcast

67° 💧 None 💨 15 mph H 50%30.00 inHg

9:00 PM

Light rain

63° 💧 0.132 in 💨 16 mph H 51%30.00 inHg

Tomorrow

12:00 AM

Light rain

56° 💧 0.076 in 💨 17 mph H 88%29.94 inHg

3:00 AM

Overcast night

57° 💧 0.084 in 💨 19 mph H 82%29.85 inHg

6:00 AM

Light rain

57° 💧 0.053 in 💨 19 mph H 87%29.80 inHg

9:00 AM

Light rain

60° 💧 0.227 in 💨 21 mph H 70%29.77 inHg

12:00 PM

Light rain

58° 💧 0.386 in 💨 20 mph H 85%29.77 inHg

3:00 PM

Severe thunderstorms

57° 💧 0.422 in 💨 20 mph H 91%29.71 inHg

6:00 PM

Light rain

57° 💧 0.210 in 💨 19 mph H 90%29.68 inHg

9:00 PM

Light rain

57° 💧 0.225 in 💨 21 mph H 88%29.65 inHg

Sunday

12:00 AM

Moderate rain

57° 💧 0.609 in 💨 23 mph H 93%29.59 inHg

3:00 AM

Light rain

58° 💧 0.038 in 💨 24 mph H 92%29.53 inHg

Today

6:00 AM

Overcast night

56° 💧 None 💨 12 mph H 65%30.15 inHg

7:00 AM

Mostly cloudy

56° 💧 None 💨 13 mph H 64%30.15 inHg

8:00 AM

Overcast

57° 💧 None 💨 13 mph H 61%30.15 inHg

9:00 AM

Mostly cloudy

59° 💧 None 💨 12 mph H 60%30.12 inHg

10:00 AM

Overcast

61° 💧 None 💨 13 mph H 58%30.12 inHg

11:00 AM

Overcast

63° 💧 None 💨 13 mph H 59%30.12 inHg

12:00 PM

Overcast

65° 💧 None 💨 15 mph H 54%30.09 inHg

1:00 PM

Overcast

66° 💧 None 💨 15 mph H 52%30.06 inHg

2:00 PM

Overcast

67° 💧 None 💨 15 mph H 51%30.03 inHg

3:00 PM

Overcast

68° 💧 None 💨 16 mph H 50%30.00 inHg

4:00 PM

Overcast

69° 💧 None 💨 17 mph H 48%30.00 inHg

5:00 PM

Overcast

68° 💧 None 💨 15 mph H 50%30.00 inHg

6:00 PM

Overcast

67° 💧 None 💨 15 mph H 50%30.00 inHg

7:00 PM

Overcast night

65° 💧 None 💨 15 mph H 48%30.00 inHg

8:00 PM

Overcast night

65° 💧 None 💨 16 mph H 46%29.97 inHg

9:00 PM

Light rain

63° 💧 0.008 in 💨 16 mph H 51%30.00 inHg

10:00 PM

Light rain

59° 💧 0.057 in 💨 17 mph H 70%29.97 inHg

11:00 PM

Light rain

57° 💧 0.068 in 💨 18 mph H 85%29.97 inHg

Tomorrow

12:00 AM

Light rain

56° 💧 0.043 in 💨 17 mph H 88%29.94 inHg

1:00 AM

Light rain

57° 💧 0.015 in 💨 17 mph H 87%29.91 inHg

2:00 AM

Light rain

57° 💧 0.018 in 💨 17 mph H 86%29.88 inHg

3:00 AM

Overcast night

57° 💧 0.001 in 💨 19 mph H 82%29.85 inHg

4:00 AM

Light rain

58° 💧 0.010 in 💨 18 mph H 81%29.83 inHg

5:00 AM

Light rain

57° 💧 0.073 in 💨 20 mph H 88%29.83 inHg

6:00 AM

Light rain

57° 💧 0.041 in 💨 19 mph H 87%29.80 inHg

7:00 AM

Light rain

58° 💧 0.005 in 💨 18 mph H 79%29.80 inHg

8:00 AM

Light rain

60° 💧 0.006 in 💨 19 mph H 71%29.80 inHg

9:00 AM

Light rain

60° 💧 0.006 in 💨 21 mph H 70%29.77 inHg

10:00 AM

Moderate rain

58° 💧 0.141 in 💨 21 mph H 87%29.77 inHg

11:00 AM

Light rain

57° 💧 0.080 in 💨 21 mph H 88%29.77 inHg

12:00 PM

Light rain

58° 💧 0.081 in 💨 20 mph H 85%29.77 inHg

1:00 PM

Light rain

60° 💧 0.041 in 💨 18 mph H 80%29.74 inHg

2:00 PM

Moderate rain

58° 💧 0.264 in 💨 18 mph H 89%29.74 inHg

3:00 PM

Severe thunderstorms

57° 💧 0.297 in 💨 20 mph H 91%29.71 inHg

4:00 PM

Light rain

58° 💧 0.076 in 💨 20 mph H 90%29.71 inHg

5:00 PM

Light rain

58° 💧 0.049 in 💨 19 mph H 90%29.68 inHg

6:00 PM

Light rain

57° 💧 0.092 in 💨 19 mph H 90%29.68 inHg

7:00 PM

Light rain

57° 💧 0.097 in 💨 21 mph H 90%29.65 inHg

8:00 PM

Light rain

58° 💧 0.021 in 💨 21 mph H 87%29.65 inHg

9:00 PM

Light rain

57° 💧 0.050 in 💨 21 mph H 88%29.65 inHg

10:00 PM

Light rain

57° 💧 0.067 in 💨 21 mph H 91%29.65 inHg

11:00 PM

Moderate rain

57° 💧 0.109 in 💨 22 mph H 93%29.62 inHg

Sunday

12:00 AM

Moderate rain

57° 💧 0.229 in 💨 23 mph H 93%29.59 inHg

1:00 AM

Moderate rain

57° 💧 0.295 in 💨 23 mph H 93%29.56 inHg

2:00 AM

Light rain

58° 💧 0.084 in 💨 23 mph H 93%29.56 inHg

3:00 AM

Light rain

58° 💧 0.004 in 💨 24 mph H 92%29.53 inHg

4:00 AM

Light rain

58° 💧 0.008 in 💨 23 mph H 90%29.53 inHg

5:00 AM

Light rain

58° 💧 0.027 in 💨 24 mph H 90%29.50 inHg

6:00 AM

Light rain

59° 💧 0.004 in 💨 24 mph H 88%29.50 inHg

7:00 AM

Light rain

59° 💧 0.006 in 💨 24 mph H 87%29.53 inHg

8:00 AM

Light rain

59° 💧 0.010 in 💨 24 mph H 88%29.53 inHg

9:00 AM

Light rain

59° 💧 0.011 in 💨 23 mph H 89%29.56 inHg

10:00 AM

Light rain

60° 💧 0.012 in 💨 21 mph H 90%29.56 inHg

11:00 AM

Light rain

61° 💧 0.017 in 💨 20 mph H 90%29.59 inHg

12:00 PM

Light rain

62° 💧 0.012 in 💨 17 mph H 89%29.59 inHg

1:00 PM

Light rain

63° 💧 0.022 in 💨 16 mph H 91%29.59 inHg

2:00 PM

Light rain

63° 💧 0.047 in 💨 17 mph H 93%29.59 inHg

3:00 PM

Light rain

64° 💧 0.092 in 💨 16 mph H 95%29.59 inHg

4:00 PM

Light rain

64° 💧 0.067 in 💨 16 mph H 96%29.62 inHg

5:00 PM

Light rain

63° 💧 0.059 in 💨 13 mph H 96%29.62 inHg

6:00 PM

Light rain

64° 💧 0.043 in 💨 10 mph H 96%29.65 inHg

7:00 PM

Light rain

64° 💧 0.047 in 💨 7 mph H 96%29.65 inHg

8:00 PM

Light rain

64° 💧 0.059 in 💨 8 mph H 96%29.68 inHg

In Greenwich and, more broadly, across the state of Connecticut: This morning will begin with mostly cloudy skies and mild temperatures ranging from 56 to 66 degrees Fahrenheit. Winds from the northeast will be moderate, reaching up to 11 mph with gusts up to 26 mph. As the day progresses, the cloud cover is expected to persist, but no precipitation is anticipated. Temperatures are likely to remain steady throughout the afternoon, maintaining the mild conditions. The wind may continue to be noticeable but should not cause significant disruptions. Overall, it will be a calm and mild day with mostly cloudy skies and no weather hazards to concern.

15-Day Weather Outlook for Greenwich

TomorrowTomorrow

Severe thunderstorms 60°/56° 💧 None 💨 22 mph

Sunday, Sep 27Sun Sep 27

Moderate rain 64°/57° 💧 None 💨 24 mph

TEMPERATURE OUTLOOK

Temperature & Weather Trends in Greenwich

Vertical axis: °F · Color based on temperature

AIR QUALITY FORECAST

Air Quality Forecast for Greenwich

Hourly forecast · Updated every 2 hours

Fair

Nearest forecast value 6:00 AM

PM2.5 Fine particles Good 1,5µg/m³

Microscopic particles that can penetrate deep into the lungs. Elevated concentrations can especially affect children, older adults and people with respiratory conditions.

PM10 Particulate matter Good 3,2µg/m³

Includes dust, pollen and other airborne particles. High concentrations may irritate the respiratory system.

O₃ Ozone Fair 77,2µg/m³

Ground-level ozone can irritate the eyes and respiratory system when concentrations are elevated.

NO₂ Nitrogen dioxide Good 6,2µg/m³

A gas emitted mainly by traffic and some industrial activity. High exposure can affect respiratory health.

Air quality is acceptable for most people.

UV & HEALTH

UV, Sun & Health Outlook in Greenwich

Maximum daily UV Today, tomorrow and the following day show the maximum UV index forecast for each day.

0–2 Low 3–5 Moderate 6–7 High 8–10 Very high 11+ Extreme

Today UV 2,6Low 🙂Fair

Tomorrow UV 1,8Low 🙂Fair

Sunday UV 1,2Low 🙂Fair

Hourly UV index today

7:00 AMUV 0,0 8:00 AMUV 0,4 9:00 AMUV 1,0 10:00 AMUV 1,8 11:00 AMUV 2,0 12:00 PMUV 2,6 1:00 PMUV 2,3 2:00 PMUV 2,6 3:00 PMUV 2,4 4:00 PMUV 1,9 5:00 PMUV 1,2 6:00 PMUV 0,6

Today's weather health advice Open today's recommendations.

Low UV risk

UV radiation will be low, although basic protection is still advisable during prolonged exposure.

Acceptable air quality

Air quality is acceptable for most people. Very sensitive people may want to reduce prolonged exertion.

Comfortable temperature conditions

Temperatures should feel comfortable for most people, with no particular heat or cold precautions needed.

Good conditions for outdoor activities

Outdoor activities can generally be enjoyed normally, with sun protection adjusted to the UV level.

WIND OUTLOOK

Hourly Wind Forecast for Greenwich

Vertical axis: mph · Horizontal axis: hours

Sustained wind Max gusts

NIGHT SKY · GREENWICH, CONNECTICUT

Tonight's Stargazing & Shooting Stars

Local night-sky conditions and meteor activity for Jasper.

22/100Best-hour score

No good viewing window tonight Astronomical darkness exists, but current sky conditions are unfavorable.

☁ Cloud cover 100% Real hourly forecast for the best viewing hour.

☾ Moonlight 100% Full Moon · Moon about 21° above the horizon at the best viewing hour.

☄ Meteor activity Southern Taurids Reference ZHR 7 · Radiant -12° high at the best hour.

✦ Estimated visible meteors Poor visibility Meteor activity may occur above the clouds, but local viewing conditions are not suitable.

Chance ≥1 meteor in 30 minNot meaningful

UPCOMING METEOR PERIODSStart, peak and end dates · weather should be checked closer to the peak.

SEP 20–NOV 20

Southern TauridsStart SEP 20 · Peak NOV 5 · End NOV 20 · ZHR 7 · 20% Moon at peak

ACTIVE NOW

OCT 2–NOV 7

OrionidsStart OCT 2 · Peak OCT 21 · End NOV 7 · ZHR 20 · 77% Moon at peak

UPCOMING

OCT 20–DEC 10

Northern TauridsStart OCT 20 · Peak NOV 12 · End DEC 10 · ZHR 5 · 7% Moon at peak

UPCOMING

NOV 6–NOV 30

LeonidsStart NOV 6 · Peak NOV 17 · End NOV 30 · ZHR 15 · 52% Moon at peak

UPCOMING

Experimental local observing estimate. Weather values come from the hourly forecast already used on this page. Moon position and astronomical darkness are calculated locally from time and coordinates. Meteor-shower ZHR describes ideal conditions and is not the number of meteors a person should expect to see locally.

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Forecast data for Greenwich were last refreshed today at 2:32 AM. The current forecast period extends through 27/09/2026 at 3:00 AM. Weather, air-quality and UV-index data are provided through WEATHER-INFO.COM. Forecasts are produced automatically from the latest available data and are subject to periodic technical checks. This service is intended for general weather information.