Go Back
  • For Business
  • |
  • Warnings
  • Data Suite
  • Forensics
  • Advertising
  • Superior Accuracy™
Hurricane Lala lashes Hawaii with damaging winds, flooding rain. See the latest. Chevron right

Old Greenwich, CT

66°F
Location Chevron down
Location News Videos
Use Current Location
Recent

Old Greenwich

Connecticut

66°
No results found.
Try searching for a city, zip code or point of interest.
Get Premium+
Create Your Account Unlock extended daily and hourly forecasts — all with your free account.
Let's Go Chevron right
Have an account already? Log In
settings
Help
Old Greenwich, CT Weather
Today WinterCast Local {stormName} Tracker Hourly 10-Day Radar MinuteCast® Monthly Air Quality Health & Activities

Around the Globe

Hurricane Tracker

Severe Weather

Radar & Maps
News

News & Features

Astronomy

Business

Climate

Health

Recreation

Sports

Travel
For Business

Warnings

Data Suite

Forensics

Advertising

Superior Accuracy™

Video

Winter Center
Today

Hourly

 10-Day Radar MinuteCast® Monthly Air Quality Health & Activities

View hourly forecasts 10-days ahead

Activate Your Premium+ Subscription

Chevron right

8 AM

68°
RealFeel® 68°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 5%
Chevron down
Mostly cloudy

RealFeel Shade™66°

WindENE 5 mph

Air QualityFair

Max UV Index1.1 (Low)

Wind Gusts6 mph

Humidity82%

Indoor Humidity81% (Slightly Humid)

Dew Point62° F

AccuLumen Brightness Index™5 (Medium)

Cloud Cover75%

Visibility10 mi

Cloud Ceiling20000 ft

9 AM

71°
RealFeel® 73°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 5%
Chevron down
Mostly cloudy

RealFeel Shade™70°

WindE 5 mph

Air QualityFair

Max UV Index1.6 (Low)

Wind Gusts6 mph

Humidity77%

Indoor Humidity77% (Humid)

Dew Point63° F

AccuLumen Brightness Index™5 (Medium)

Cloud Cover78%

Visibility10 mi

Cloud Ceiling19500 ft

10 AM

74°
RealFeel® 77°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 6%
Chevron down
Mostly cloudy

RealFeel Shade™73°

WindESE 6 mph

Air QualityFair

Max UV Index2.2 (Low)

Wind Gusts7 mph

Humidity72%

Indoor Humidity72% (Humid)

Dew Point64° F

AccuLumen Brightness Index™4 (Dull)

Cloud Cover84%

Visibility10 mi

Cloud Ceiling19000 ft

11 AM

76°
RealFeel® 80°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 7%
Chevron down
Cloudy

RealFeel Shade™76°

WindESE 6 mph

Air QualityFair

Max UV Index2.6 (Moderate)

Wind Gusts7 mph

Humidity69%

Indoor Humidity69% (Humid)

Dew Point65° F

AccuLumen Brightness Index™2 (Dark)

Cloud Cover90%

Visibility10 mi

Cloud Ceiling18500 ft

12 PM

78°
RealFeel® 82°
Very Warm
RealFeel Guide
Very Warm
82° to 89°
Older adults, infants, and those with sensitive medical conditions should minimize outdoor activity, especially in the sunshine.
LEARN MORE
rain drop 7%
Chevron down
Cloudy

RealFeel Shade™77°

WindSE 7 mph

Air QualityFair

Max UV Index3.2 (Moderate)

Wind Gusts9 mph

Humidity65%

Indoor Humidity65% (Humid)

Dew Point65° F

AccuLumen Brightness Index™2 (Dark)

Cloud Cover90%

Visibility10 mi

Cloud Ceiling14600 ft

1 PM

79°
RealFeel® 82°
Very Warm
RealFeel Guide
Very Warm
82° to 89°
Older adults, infants, and those with sensitive medical conditions should minimize outdoor activity, especially in the sunshine.
LEARN MORE
rain drop 11%
Chevron down
Cloudy

RealFeel Shade™78°

Heat Index80°

WindSSE 8 mph

Air QualityFair

Max UV Index3.2 (Moderate)

Wind Gusts10 mph

Humidity62%

Indoor Humidity62% (Humid)

Dew Point65° F

AccuLumen Brightness Index™2 (Dark)

Cloud Cover90%

Visibility10 mi

Cloud Ceiling10700 ft

2 PM

81°
RealFeel® 81°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 19%
Chevron down
Cloudy

RealFeel Shade™78°

Heat Index83°

WindS 15 mph

Air QualityFair

Max UV Index2.6 (Moderate)

Wind Gusts20 mph

Humidity59%

Indoor Humidity59% (Humid)

Dew Point65° F

AccuLumen Brightness Index™2 (Dark)

Cloud Cover90%

Visibility10 mi

Cloud Ceiling6800 ft

3 PM

79°
RealFeel® 78°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 19%
Chevron down
Cloudy

RealFeel Shade™77°

Heat Index80°

WindS 15 mph

Air QualityFair

Max UV Index1.9 (Low)

Wind Gusts22 mph

Humidity62%

Indoor Humidity62% (Humid)

Dew Point65° F

AccuLumen Brightness Index™2 (Dark)

Cloud Cover90%

Visibility10 mi

Cloud Ceiling6700 ft

4 PM

78°
RealFeel® 76°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 24%
Chevron down
Cloudy

RealFeel Shade™75°

WindSSW 15 mph

Air QualityFair

Max UV Index1.4 (Low)

Wind Gusts24 mph

Humidity66%

Indoor Humidity66% (Humid)

Dew Point65° F

AccuLumen Brightness Index™2 (Dark)

Cloud Cover90%

Visibility10 mi

Cloud Ceiling6700 ft

5 PM

76°
RealFeel® 75°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 47%
Chevron down
Cloudy

RealFeel Shade™75°

WindSSW 15 mph

Air QualityFair

Max UV Index0.9 (Low)

Wind Gusts27 mph

Humidity69%

Indoor Humidity69% (Humid)

Dew Point66° F

AccuLumen Brightness Index™2 (Dark)

Cloud Cover90%

Visibility10 mi

Cloud Ceiling6700 ft

6 PM

76°
RealFeel® 72°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 51%
Chevron down
Showers

RealFeel Shade™72°

WindSSW 15 mph

Air QualityFair

Max UV Index0.5 (Low)

Wind Gusts25 mph

Humidity71%

Indoor Humidity71% (Humid)

Dew Point66° F

AccuLumen Brightness Index™2 (Dark)

Cloud Cover90%

Rain0.02 in

Visibility6 mi

Cloud Ceiling5900 ft

7 PM

74°
RealFeel® 72°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 47%
Chevron down
Cloudy

RealFeel Shade™72°

WindS 15 mph

Air QualityFair

Max UV Index0.2 (Low)

Wind Gusts23 mph

Humidity76%

Indoor Humidity76% (Humid)

Dew Point66° F

AccuLumen Brightness Index™1 (Dark)

Cloud Cover90%

Visibility10 mi

Cloud Ceiling5200 ft

8 PM

72°
RealFeel® 70°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 43%
Chevron down
Cloudy

WindSSE 15 mph

Air QualityFair

Wind Gusts24 mph

Humidity81%

Indoor Humidity81% (Humid)

Dew Point66° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover100%

Visibility10 mi

Cloud Ceiling4400 ft

9 PM

71°
RealFeel® 69°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 47%
Chevron down
Cloudy

WindSSE 15 mph

Air QualityFair

Wind Gusts23 mph

Humidity85%

Indoor Humidity85% (Humid)

Dew Point66° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover99%

Visibility10 mi

Cloud Ceiling3600 ft

10 PM

70°
RealFeel® 64°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 51%
Chevron down
Thunderstorms

WindSE 15 mph

Air QualityFair

Wind Gusts20 mph

Humidity88%

Indoor Humidity88% (Humid)

Dew Point66° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover99%

Rain0.11 in

Visibility4 mi

Cloud Ceiling2000 ft

11 PM

69°
RealFeel® 67°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 49%
Chevron down
Cloudy

WindESE 15 mph

Air QualityFair

Wind Gusts17 mph

Humidity92%

Indoor Humidity92% (Very Humid)

Dew Point67° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover100%

Visibility10 mi

Cloud Ceiling2000 ft

Hourly Weather Forecast for Old Greenwich

AccuWeather's hourly forecast for Old Greenwich provides hour-by-hour temperatures, RealFeel® Temperature, and precipitation probability through the next 10 days. The current hour shows 68° with a RealFeel® of 68°, mostly cloudy with a 5% chance of precipitation. Each hourly forecast includes wind speed, humidity, air quality, UV index, and the AccuLumen Brightness Index™, AccuWeather's measure of perceived outdoor light intensity. Forecasts are generated by proprietary systems developed by AccuWeather meteorologists since 1962.

Further Ahead

Tomorrow

Tuesday

10-Day

Around the Globe

Hurricane Tracker

Severe Weather

Radar & Maps

News

Video

Winter Center

Top Stories

Hurricane

Hurricane Lala passes just south of Hawaii’s Big Island

1 hour ago

Hurricane

Hurricane Lala lashes Hawaii with winds, rain on final approach

55 minutes ago

Weather Forecasts

Dangerous heat dome to expand across the South through the weekend

44 minutes ago

Severe Weather

Flooding sweeps northern Indiana, breaking 113-year-old record

1 day ago

Severe Weather

Severe weather, flooding threat to stretch from the Plains to the East

48 minutes ago

 More Stories

Featured Stories

Weather News

Powerful 7.7 magnitude earthquake hits Indonesia

1 day ago

Weather News

3 child hot car deaths reported in 3 days as U.S. toll reaches 20

1 day ago

Weather News

How deadly is quicksand, really? And how can you escape?

3 days ago

Astronomy

Stunning images reveal ‘whirlpools’ swirling across the sun

3 days ago

Climate

How extreme heat could affect your grocery bill

4 days ago
World North America United States Connecticut Old Greenwich

Weather Near Old Greenwich:

  • Bridgeport, CT
  • New York, NY
  • Newark, NJ
Company
Proven Superior Accuracy™ About AccuWeather Digital Advertising Careers Press Contact Us
Products & Services
For Business For Partners For Advertising AccuWeather APIs AccuWeather Connect Personal Weather Stations
Apps & Downloads
iPhone App Android App See all Apps & Downloads
Subscription Services
AccuWeather Premium AccuWeather Professional
More
AccuWeather Ready Business Health Hurricane Leisure and Recreation Severe Weather Space and Astronomy Sports Travel Weather News Winter Center
Company
Proven Superior Accuracy™ About AccuWeather Digital Advertising Careers Press Contact Us
Products & Services
For Business For Partners For Advertising AccuWeather APIs AccuWeather Connect Personal Weather Stations
Apps & Downloads
iPhone App Android App See all Apps & Downloads
Subscription Services
AccuWeather Premium AccuWeather Professional
More
AccuWeather Ready Business Health Hurricane Leisure and Recreation Severe Weather Space and Astronomy Sports Travel Weather News Winter Center
© 2026 AccuWeather, Inc. "AccuWeather" and sun design are registered trademarks of AccuWeather, Inc. All Rights Reserved.
Terms of Use | Privacy Policy | Cookie Policy | About Your Privacy Do Not Sell or Share My Personal Information | Data Sources

...

...

...