Cos Cob, CT Weather Forecast

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Cos Cob, CT Weather Forecast

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Cos Cob CT weather  - Clear - 66°F
Clear
66°F
Updated 3:40 am
Feels Like 69°F
Humidity 78%
Wind N 0 mph
Barometer  29.91 in
Dew Point 59°F
Cos Cob CT weather  - Clear - 19°C
Clear
19°C
Updated 3:40 am
Feels Like 20°C
Humidity 78%
Wind N 0 km/h
Barometer  101.3 kPa
Dew Point 15°C

Cos Cob Weather Forecast

TODAY TONIGHT SATURDAY SATURDAY NIGHT SUNDAY SUNDAY NIGHT MONDAY MONDAY NIGHT TUESDAY TUESDAY NIGHT WEDNESDAY WEDNESDAY NIGHT
Cos Cob, CT Weather - Today Mostly Sunny Cos Cob, CT Weather - Tonight Mostly Clear Cos Cob, CT Weather - Saturday Partly Sunny Cos Cob, CT Weather - Saturday Night Chance Of T-Storm Cos Cob, CT Weather - Sunday Chance Of T-Storm Cos Cob, CT Weather - Sunday Night Partly Cloudy Cos Cob, CT Weather - Monday Sunny Cos Cob, CT Weather - Monday Night Mostly Clear Cos Cob, CT Weather - Tuesday Sunny Cos Cob, CT Weather - Tuesday Night Partly Cloudy Cos Cob, CT Weather - Wednesday Sunny Cos Cob, CT Weather - Wednesday Night Partly Cloudy
Mostly Sunny Mostly Clear Partly Sunny Chance of T-Storm Chance of T-Storm Partly Cloudy Sunny Mostly Clear Sunny Partly Cloudy Sunny Partly Cloudy
Hi: 79°FHi: 26°C
Lo: 59°FLo: 15°C Hi: 79°FHi: 26°C
Lo: 65°FLo: 18°C Hi: 80°FHi: 27°C
Lo: 61°FLo: 16°C Hi: 75°FHi: 24°C
Lo: 55°FLo: 13°C Hi: 75°FHi: 24°C
Lo: 61°FLo: 16°C Hi: 80°FHi: 27°C
Lo: 61°FLo: 16°C
POP: 90% POP: 90%
POP = Probability of Precipitation.
Weather Outlook Updated: 234 AM EDT Fri Sep 11 2026 Cos Cob, CT Weather - WeatherWorld.com

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Issued: 129 AM EDT Fri Sep 11 2026

Key Messages

1) Apparent temperatures will become pleasant Friday into Saturday.

2) A period of showers and isolated thunderstorms expected late Saturday night into Sunday morning. Locally heavy rainfall is possible, but impacts, if any, appear limited at this time.

3) Dry and seasonable conditions early next week.


Discussion

... .KEY MESSAGE 1... The cold front passes through dry tonight, but there may be a brief increase in clouds as a wave passes well to the south. Clouds quickly decrease Friday m...