41.0167’ N, 73.5967’ W

Cos Cob Harbor, CT

61°
H -°
L 50°
WNW
3mph
High tide
11:20 pm

Cos Cob Harbor, CT Weather Forecast and Current Conditions

Day Sky High / Low Precip Wind Humidity
Fri
Oct 9
Partly Cloudy
Close Hourly
-º / 50º 2% NW 5 mph 62%
8pm Mostly Clear 61º 0% WNW 3 mph 54%
9pm Mostly Clear 59º 0% WNW 3 mph 57%
10pm Partly Cloudy 58º 0% WNW 3 mph 59%
11pm Partly Cloudy 57º 0% WNW 4 mph 59%
Sat
Oct 10
Partly Cloudy
View Hourly
67º / 54º 2% ENE 6 mph 55%
12am Partly Cloudy 56º 0% WNW 4 mph 62%
1am Partly Cloudy 55º 1% WNW 4 mph 65%
2am Partly Cloudy 54º 1% WNW 4 mph 66%
3am Mostly Cloudy 54º 1% NW 5 mph 68%
4am Partly Cloudy 53º 1% NW 5 mph 69%
5am Partly Cloudy 52º 1% NW 5 mph 70%
6am Mostly Cloudy 52º 2% NNW 5 mph 72%
7am Partly Cloudy 51º 2% NNW 5 mph 72%
8am Partly Cloudy 53º 2% N 6 mph 69%
9am Partly Cloudy 56º 1% N 6 mph 66%
10am Mostly Cloudy 59º 1% NNE 6 mph 60%
11am Mostly Cloudy 61º 0% NE 6 mph 55%
12pm Mostly Cloudy 63º 0% ENE 5 mph 52%
1pm Partly Cloudy 64º 0% E 5 mph 48%
2pm Mostly Cloudy 66º 0% E 5 mph 46%
3pm Mostly Cloudy 65º 0% ESE 5 mph 47%
4pm Partly Cloudy 65º 1% ESE 5 mph 46%
5pm Partly Cloudy 65º 0% ESE 4 mph 48%
6pm Mostly Cloudy 63º 1% ESE 3 mph 55%
7pm Mostly Cloudy 60º 1% ESE 3 mph 62%
8pm Partly Cloudy 58º 1% SE 3 mph 65%
9pm Mostly Clear 57º 1% SE 4 mph 68%
10pm Partly Cloudy 56º 2% ESE 3 mph 73%
11pm Partly Cloudy 55º 2% ESE 4 mph 75%
Sun
Oct 11
Rain
View Hourly
63º / 57º 99% E 13 mph 83%
12am Partly Cloudy 55º 2% ESE 4 mph 75%
1am Partly Cloudy 55º 2% ESE 5 mph 78%
2am Mostly Cloudy 55º 3% ESE 5 mph 78%
3am Mostly Cloudy 56º 3% E 6 mph 78%
4am Cloudy 56º 3% E 6 mph 77%
5am Cloudy 56º 3% E 7 mph 79%
6am Cloudy 57º 4% E 7 mph 81%
7am Cloudy 57º 4% E 7 mph 80%
8am Cloudy 57º 19% E 8 mph 82%
9am Cloudy 59º 22% E 9 mph 81%
10am Showers 61º 36% E 10 mph 76%
11am Showers 63º 50% E 10 mph 75%
12pm Rain 63º 60% E 10 mph 76%
1pm Rain 63º 82% E 12 mph 80%
2pm Rain 62º 90% E 12 mph 84%
3pm Rain 62º 89% E 12 mph 88%
4pm Rain 62º 87% E 13 mph 89%
5pm Rain 61º 95% E 13 mph 91%
6pm Rain 61º 100% E 13 mph 93%
7pm Rain 60º 90% E 15 mph 95%
Mon
Oct 12
AM Showers 70º / 55º 51% N 11 mph 79%
Tue
Oct 13
PM Showers 72º / 59º 53% SSW 10 mph 80%
Wed
Oct 14
Partly Cloudy 71º / 57º 21% NNW 10 mph 78%
Thu
Oct 15
Mostly Sunny 65º / 52º 4% N 9 mph 59%
Fri
Oct 16
Showers 64º / 54º 58% SSE 12 mph 75%

Weather Radar for Cos Cob Harbor, CT See Radar

* Playback displays weather for the past 6 hours.

NOAA Weather Marine Forecast for Cos Cob Harbor, CT

Tonight
Low : 50ºF
WNW wind 5 to 8 kt becoming variable and less than 5 kt after midnight. Partly cloudy. Seas 1 ft or less.
Saturday
High : 67ºF
Variable winds 5 kt or less. Mostly sunny. Seas 1 ft or less.
Saturday Night
Low : 54ºF
Variable winds 5 kt or less. Mostly cloudy. Seas 1 ft or less.
Sunday
High : 64ºF
Variable winds less than 5 kt becoming ESE 5 to 8 kt in the morning. Periods of rain, mainly after 2pm. Seas 1 ft or less.
Sunday Night
Low : 60ºF
E wind 12 to 14 kt, with gusts as high as 24 kt. Periods of rain before 11pm, then periods of rain and possibly a thunderstorm between 11pm and 2am, then a chance of rain and thunderstorms after 2am. Seas 1 ft or less.
Columbus Day
High : 70ºF
N wind 7 to 12 kt. A chance of rain before 8am. Seas 1 ft or less.
Monday Night
Low : 57ºF
Variable winds 5 kt or less. Partly cloudy. Seas 1 ft or less.
Tuesday
High : 70ºF
W wind 5 to 9 kt becoming SW in the afternoon. A chance of showers. Seas around 1 ft.
Tuesday Night
Low : 53ºF
WSW wind around 12 kt becoming NW after midnight. A chance of showers. Seas around 2 ft.

NOAA Buoy Data Near Cos Cob Harbor, CT See Map

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    Wind Speed Forecast for Cos Cob Harbor, CT

    SaturdaySunday
    Wind Speed (MPH) 34565534681013
    12am4am8am12pm4pm8pm12am4am8am12pm4pm8pm
    MPH 34565534681013
    DIR WNWWNWNWNENEESESEESEEEEE

    Current Weather Conditions In Cos Cob Harbor, CT

    As Of: 4 minutes ago

    • 61ºF
    • 61ºF
    • 3mph
    • 0º (WNW)
    • 3mph
    • Mostly Clear
    • 10mi
    • 30.22"
    • 54%
    • 0ºF

    The weather right now in Cos Cob Harbor, CT is Mostly Clear. The current temperature is 61°F, and the expected high and low for today, Friday, October 9, 2026, are -° high temperature and 50°F low temperature. The wind is currently blowing at 3 miles per hour, and coming from the West Northwest. The wind is gusting to 3 mph. With the wind and the atmosphere the temperature feels like 61° Fahrenheit. Expected precipitation is 0 percent, with current humidity at 54 percent, and air pressure at 30.22 in. Visibility is 10 nautical miles. There are no current weather alert(s).