New York, NY 22° Los Angeles, CA 20° 🌤️ Chicago, IL 🌤️ Houston, TX 🌤️ Miami, FL 🌤️ Phoenix, AZ 🌤️ Seattle, WA 🌤️ Denver, CO 🌤️ Toronto, ON Vancouver, BC 16°
WeatherLive › Connecticut › Cos Cob

Cos Cob, CT Weather (06807)

Today Hourly 10-Day Weekend Monthly Radar Air Quality Climate
Current WeatherCos Cob · 5:25 AM EDT
30° | 19°
20°C
Feels like 21°
Sunny
WindW 4 mph · Gusts 5 mph
Precip11% · –
Humidity76% · Dew point 16°
UV index5 Moderate
Air Quality58 Moderate
Pressure29.88 inHg
Visibility6 mi
Sunrise / Sunset6:09 AM · 7:46 PM · 13h 37m

Weather map — Cos Cob

Full radar →
Now
20°
9%
4 mph
06:00
19°
10%
4 mph
07:00
19°
9%
3 mph
08:00
22°
8%
4 mph
09:00
24°
6%
5 mph
10:00
25°
18%
7 mph
11:00
27°
15%
5 mph
12:00
29°
5%
7 mph
13:00
29°
11%
7 mph
14:00
28°
10%
5 mph
15:00
30°
11%
3 mph
16:00
29°
12%
3 mph
17:00
22°
21%
2 mph
18:00
23°
8%
1 mph
19:00
22°
18%
2 mph
20:00
22°
20%
2 mph
21:00
22°
10%
2 mph
22:00
22°
9%
1 mph
23:00
22°
9%
2 mph
00:00
22°
9%
3 mph
01:00
21°
8%
4 mph
02:00
21°
8%
5 mph
03:00
20°
9%
7 mph
04:00
20°
14%
7 mph

Today · Thu 8/20

High 30°
11% / –

Sunny. Winds NW at 7 mph.

Overnight · Thu 8/20

Low 19°
— / –

Sunny.

Tomorrow · Fri 8/21

25° | 19°
8% / –

Mostly cloudy. Winds N at 9 mph.

7-day trend

Cos Cob · temperature + precipitation

10-day forecast

Updated 5:25 AM

Details & indices

Wind
4 mph W
Gusts 5 mph
Humidity
76%
Dew point 16°
Pressure
29.88 inHg
Falling
UV index
5 — Moderate
High today
Air Quality
Moderate
AQI 58 · US EPA
Allergy
Very high
Mugwort
Visibility
6 mi
Clear view
Allergy — Cos Cob

🌿 Conditions right now

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

Sun & moon

Sunrise6:09 AM
Sunset7:46 PM
Length of day13h 37m
Moonrise2:49 PM
Moonset11:37 PM
Moon phase🌓 First Quarter · 53%
Next full moonAug 28 Sturgeon Moon
Latitude41.0334°N
Longitude-73.5996°E

Water temps nearby

View all →
Jones Beach (30 mi)76°
Rockaway Beach (33 mi)75°
Coney Island Beach (37 mi)78°
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 · Thursday, August 20
Where the Cos Cob 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: 41.0334°N, -73.5996°.
NBM + global weather models
Updated: 5:25 AM
Weather in Cos Cob
Cos Cob's outlook: warmest day near 30° (Thursday), coldest night about 19° (Saturday). About 1.1 in of precipitation is expected in total; the most likely wet day is Wednesday (88% chance). Expect a blustery spell — gusts near 31 mph on Thursday. No active NWS alerts at the moment — quiet on the hazards front. Right now Cos Cob is running about 51° warmer than Springfield. Longer view: classic Northeast mix — nor'easters, humid spells and a glorious fall.
Cos Cob, CT · Elev 49 ft · 41.03°N, 73.60°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: 5:25 AM