Weather Alert
Cos Cob Weather Warning NWS WEATHER ALERT FOR THE COS COB, CT AREA - Issued: 229 AM EDT Fri Sep 18 2026 Cos Cob Weather Warning

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Cos Cob, CT Weather - Hour by Hour Forecast

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Cos Cob, CT Weather - Hour by Hour Forecast

24 Hour Forecast

Current Conditions - Mostly Cloudy. Temperature is 72°F22°C, dew point 70°F21°C, humidity 93%. Wind direction is N at 6 mph10 km/h with visibility of 10 mi16 km. Barometric pressure is 30.03 in1017 mb.
Overnight - Mostly cloudy with a 30% chance of showers. Lows in the upper 60s. West winds around 5 mph... Full Forecast
Friday - Mostly sunny. Highs in the upper 70s. North winds 5 to 10 mph... Full Forecast

Cos Cob Hourly Weather

24 Hour Forecast Scroll
Fri, Sep 18
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Cos Cob, CT Hourly Weather - Cloudy - 5:00 AM Cos Cob, CT Hourly Weather - Cloudy - 6:00 AM Cos Cob, CT Hourly Weather - Cloudy - 7:00 AM Cos Cob, CT Hourly Weather - Cloudy - 8:00 AM Cos Cob, CT Hourly Weather - Cloudy - 9:00 AM Cos Cob, CT Hourly Weather - Mostly Cloudy - 10:00 AM Cos Cob, CT Hourly Weather - Mostly Cloudy - 11:00 AM Cos Cob, CT Hourly Weather - Mostly Cloudy - 12:00 PM Cos Cob, CT Hourly Weather - Mostly Cloudy - 1:00 PM Cos Cob, CT Hourly Weather - Mostly Cloudy - 2:00 PM Cos Cob, CT Hourly Weather - Mostly Cloudy - 3:00 PM Cos Cob, CT Hourly Weather - Partly Cloudy - 4:00 PM Cos Cob, CT Hourly Weather - Partly Cloudy - 5:00 PM Cos Cob, CT Hourly Weather - Partly Cloudy - 6:00 PM Cos Cob, CT Hourly Weather - Mostly Clear - 7:00 PM Cos Cob, CT Hourly Weather - Mostly Clear - 8:00 PM Cos Cob, CT Hourly Weather - Mostly Clear - 9:00 PM Cos Cob, CT Hourly Weather - Mostly Clear - 10:00 PM Cos Cob, CT Hourly Weather - Mostly Clear - 11:00 PM Cos Cob, CT Hourly Weather - Mostly Clear - 12:00 AM Cos Cob, CT Hourly Weather - Partly Cloudy - 1:00 AM Cos Cob, CT Hourly Weather - Partly Cloudy - 2:00 AM Cos Cob, CT Hourly Weather - Partly Cloudy - 3:00 AM Cos Cob, CT Hourly Weather - Partly Cloudy - 4:00 AM
Cloudy Cloudy Cloudy Cloudy Cloudy Mostly Cloudy Mostly Cloudy Mostly Cloudy Mostly Cloudy Mostly Cloudy Mostly Cloudy Partly Cloudy Partly Cloudy Partly Cloudy Mostly Clear Mostly Clear Mostly Clear Mostly Clear Mostly Clear Mostly Clear Partly Cloudy Partly Cloudy Partly Cloudy Partly Cloudy
69°F21°C 69°F21°C 70°F21°C 70°F21°C 71°F22°C 73°F23°C 74°F23°C 75°F24°C 76°F24°C 77°F25°C 77°F25°C 77°F25°C 77°F25°C 74°F23°C 72°F22°C 69°F21°C 68°F20°C 66°F19°C 65°F18°C 63°F17°C 62°F17°C 60°F16°C 59°F15°C 57°F14°C
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8% 8% 8% 8% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 1% 1%
66°F19°C 66°F19°C 65°F18°C 65°F18°C 64°F18°C 64°F18°C 63°F17°C 62°F17°C 61°F16°C 60°F16°C 59°F15°C 57°F14°C 56°F13°C 56°F13°C 55°F13°C 55°F13°C 54°F12°C 53°F12°C 52°F11°C 50°F10°C 49°F9°C 47°F8°C 46°F8°C 44°F7°C
90% 90% 84% 84% 79% 73% 69% 64% 60% 56% 54% 50% 48% 53% 55% 61% 61% 63% 63% 63% 62% 62% 62% 62%
NW NW NNW NNW NNW NNW NNW NNW NNW NW NW NNW NNW NNW NNW NNW NNW NNW NNW N N N SSW SE
4 mph 4 mph 6 mph 6 mph 6 mph 9 mph 9 mph 9 mph 9 mph 9 mph 9 mph 11 mph 11 mph 11 mph 8 mph 8 mph 8 mph 11 mph 11 mph 11 mph 9 mph 9 mph 9 mph 8 mph
10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km 10 mi16 km
Hour (EDT)
Weather
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Temperature
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POP
Dewpoint
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Visibility
POP = Probability of Precipitation. ** Indicates missing data/values from KHPN model statistics.

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Prob Precip % = Probability of Precipitation.

Cos Cob 36 Hour Forecast

POP = Probability of Precipitation. ** Indicates missing data/values from model statistics.

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