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WeatherLive › Connecticut › Old Greenwich

Old Greenwich, CT Weather

Today Hourly 10-Day Weekend Monthly Radar Air Quality Climate
Current WeatherOld Greenwich · 4:58 PM EDT
84° | 62°
84°F
Feels like 85°
Sunny
WindW 8 mph · Gusts 13 mph
Precip5% · –
Humidity49% · Dew point 63°
UV index7 High
Air Quality43 Good
Pressure29.94 inHg
Visibility6 mi
Sunrise / Sunset6:14 AM · 7:38 PM · 13h 24m

Weather map — Old Greenwich

Full radar →
Now
84°
2%
8 mph
17:00
83°
2%
9 mph
18:00
81°
2%
12 mph
19:00
78°
2%
9 mph
20:00
73°
6%
9 mph
21:00
71°
10%
8 mph
22:00
69°
5%
10 mph
23:00
68°
6%
11 mph
00:00
67°
6%
9 mph
01:00
67°
7%
8 mph
02:00
66°
12%
8 mph
03:00
65°
9%
7 mph
04:00
64°
7%
6 mph
05:00
64°
8%
6 mph
06:00
64°
8%
5 mph
07:00
64°
8%
4 mph
08:00
66°
12%
3 mph
09:00
68°
11%
3 mph
10:00
70°
9%
3 mph
11:00
72°
3%
3 mph
12:00
73°
2%
3 mph
13:00
75°
2%
2 mph
14:00
76°
10%
2 mph
15:00
78°
10%
1 mph

Today · Tue 8/25

High 84°
5% / –

Sunny. Winds NW at 13 mph.

Tonight · Tue 8/25

Low 64°
10% / –

Mostly cloudy. Winds NW at 8 mph.

Tomorrow · Wed 8/26

81° | 64°
8% / –

Sunny. Winds SW at 13 mph.

7-day trend

Old Greenwich · temperature + precipitation

10-day forecast

Updated 4:58 PM

Details & indices

Wind
8 mph W
Gusts 13 mph
Humidity
49%
Dew point 63°
Pressure
29.94 inHg
Rising
UV index
7 — High
High today
Air Quality
Good
AQI 43 · US EPA
Allergy
Very high
Mugwort
Visibility
6 mi
Clear view
Allergy — Old Greenwich

🌿 Conditions right now

View all →
Birch
None
Grass
Moderate
Oak
None
Alder
None
Hazel
None
Mugwort
High
Ragweed
Moderate

Sun & moon

Sunrise6:14 AM
Sunset7:38 PM
Length of day13h 24m
Moonrise6:33 PM
Moonset3:20 AM
Moon phase🌔 Waxing Gibbous · 95%
Next full moonAug 28 Sturgeon Moon
Latitude41.0229°N
Longitude-73.5649°E

Water temps nearby

View all →
Jones Beach (30 mi)73°
Rockaway Beach (33 mi)74°
Coney Island Beach (38 mi)76°
Asbury Park (60 mi)74°
🌤️No rain expected in the next 90 minutes
Now+30+60+90 min
Minute-by-minute precip · HRRR nowcast

Daily planner

computed from today's forecast
Laundry day
Great
Line-drying weather
Grilling
Great
Fire up the grill
Running
Fair
Lace up outside
Patio
Great
Dinner outdoors
Nearby places in {{REGION}}
🌤️
Bridgeport
—
—
Data sources · Tuesday, August 25
Where the Old Greenwich forecast comes from
This page blends NOAA/NWS model guidance with global ensembles for the 10-day outlook, air quality and alerts. Data refreshes every hour, current conditions every 15 minutes. Coordinates: 41.0229°N, -73.5649°.
NBM + global weather models
Updated: 4:58 PM
Weather in Old Greenwich
The 10-day span for Old Greenwich runs from a high near 84° on Tuesday down to 62° overnight on Tuesday. About 0.79 in of precipitation is expected in total; the most likely wet day is Tuesday (78% chance). Wind is the one to watch: gusts to 29 mph around Tuesday. No active NWS alerts at the moment — quiet on the hazards front. Right now Old Greenwich is running about 19° warmer than Bridgeport. Longer view: classic Northeast mix — nor'easters, humid spells and a glorious fall.
Old Greenwich, CT · Elev 26 ft · 41.02°N, 73.56°W · Connecticut · Forecast computed for these exact coordinates
Powered by NWS/NOAA guidance, multi-model forecasts and official environmental feeds · NOAA/NWS · EPA AirNow · MET Norway · global models
Updated: 4:58 PM