November weather forecast
Cos Cob, CT

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Weather in November

November in Cos Cob is the precursor to winter, with temperatures lower than October. The days become significantly shorter, and the chill deepens. The transition from 50.9°F (10.5°C) high temperature to 40.6°F (4.8°C) low indicates the oncoming winter with the increased likelihood of snowfall. The scenery shifts to barren trees, and the outdoor excitement is replaced by a preference for indoor coziness. The weather in November in Cos Cob sets the stage for winter, with its chilly breeze and shortened daylight hours.

Temperature

The move into November in Cos Cob indicates a reduction in the average high-temperature, down from October's refreshing 62.4°F (16.9°C) to a fresh 50.9°F (10.5°C). An average low-temperature of 40.6°F (4.8°C) is observed in Cos Cob during the November nights.

Humidity

In Cos Cob, the average relative humidity in November is 72%.

Rainfall

In Cos Cob, during November, the rain falls for 10.2 days and regularly aggregates up to 2.83" (72mm) of precipitation. Throughout the year, there are 165.6 rainfall days, and 37.64" (956mm) of precipitation is accumulated.

Snowfall

January through April, November and December are months with snowfall in Cos Cob. November is the first month it typically snows. Throughout November, in the average 1 snowfall days, it receives 0.24" (6mm) of snow. In Cos Cob, during the entire year, snow falls for 25.5 days and aggregates up to 8.78" (223mm) of snow.

Ocean temperature

In Cos Cob, Connecticut, the average seawater temperature in November is 53.8°F (12.1°C).
Note: With the appropriate swimsuit, one can swim in 53.8°F (12.1°C) even if temperatures dip below 50°F (10°C); otherwise, be ready for cold shock and breath issues. A fleeting swim around 55.4°F (13°C) is distressing.

Daylight

In Cos Cob, the average length of the day in November is 9h and 54min.
On the first day of the month, sunrise is at 7:26 am and sunset at 5:49 pm EDT. On the last day of November, sunrise is at 6:59 am and sunset at 4:27 pm EST.
Note: On Sunday, November 3. 2024, at 2:00 am, Daylight Saving Time ends, and the time zone changes from EDT to EST. Daylight Saving Time starts again on Sunday, March 9. 2025, at 2:00 am; consequently, the time zone reverts from EST to EDT.

Sunshine

In November, the average sunshine in Cos Cob is 5.6h.

UV index

The months with the lowest UV index are January through March, November and December, with an average maximum UV index of 2. A UV Index reading of 2, and below, represents a low threat to health from exposure to the Sun's UV rays for the ordinary person.
Note: An average UV index of 2 in November transforms into this advice:
Children necessitate constant protection from sunlight, unlike the majority, who can remain under the sun for about an hour without burning. Stay safe from the Sun's strongest UV rays by limiting exposure during midday. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance. Be alert to the fact! The reflection from snow can nearly double the UV radiation of the Sun.
Updated: Feb 10, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are the temperatures in Cos Cob in November?

In Cos Cob, in November, the average high-temperature is 50.9°F (10.5°C), and the average low-temperature is 40.6°F (4.8°C). In August, the average heat index (a.k.a. 'feels like', 'real feel'), which combines air temperature and relative humidity, is appraised at 84.2°F (29°C).

What is the average humidity in November in Cos Cob?

In November, the average relative humidity in Cos Cob, Connecticut, is 72%.

How much does it rain in Cos Cob in November?

In November, in Cos Cob, Connecticut, the rain falls for 10.2 days. Throughout November, 2.83" (72mm) of precipitation is accumulated.

When does it start snowing in Cos Cob?

November is the first month it typically snows in Cos Cob, Connecticut. Throughout November, in the average 1 snowfall days, it receives 0.24" (6mm) of snow.

What is the water temperature in November in Cos Cob?

In Cos Cob, the average seawater temperature in November is 53.8°F (12.1°C). Swimming in 53.8°F (12.1°C) is considered life-threatening. Even a few minutes in 55.4°F (13°C) water is uncomfortable, and swimming below 50°F (10°C) may cause total loss of breathing control and cold shock, depending on a person's physique.

How many hours of daylight does Cos Cob have in November?

In Cos Cob, Connecticut, the average day length in November is 9h and 54min.

What time are sunrise and sunset in November in Cos Cob?

On the first day of November, sunrise is at 7:26 am and sunset at 5:49 pm EDT. On the last day of the month, sunrise is at 6:59 am and sunset at 4:27 pm EST.

When does Daylight Saving Time (DST) end in November in Cos Cob?

On Sunday, November 3. 2024, at 2:00 am, Daylight Saving Time ends, and the time zone changes from EDT to EST. The next DST starts Sunday, March 9. 2025, at 2:00 am.

How many hours of sunshine does Cos Cob have in November?

In Cos Cob, the average sunshine duration in November is 5.6h.

What is the month with the lowest UV index in Cos Cob?

The months with the lowest UV index in Cos Cob are January through March, November and December, with an average maximum UV index of 2.

What is the UV index reading in November in Cos Cob?

In Cos Cob, the average daily maximum UV index in November is 2. A UV Index estimate of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in November
Cos Cob, CT

Average temperature in November - Cos Cob, CT
  • Average high temperature in November: 50.9°F

The warmest month (with the highest average high temperature) is July (82°F).
The month with the lowest average high temperature is January (35.8°F).

  • Average low temperature in November: 40.6°F

The month with the highest average low temperature is July (69.1°F).
The coldest month (with the lowest average low temperature) is January (26.1°F).

Average pressure in November
Cos Cob, CT

Average pressure in November - Cos Cob, CT
  • Average pressure in November: 30.1"Hg

The month with the highest atmospheric pressure is November (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

Average wind speed in November
Cos Cob, CT

Average wind speed in November - Cos Cob, CT
  • Average wind speed in November: 9.4mph

The windiest month (with the highest average wind speed) is January (9.9mph).
The calmest month (with the lowest average wind speed) is July (6.5mph).

Average humidity in November
Cos Cob, CT

Average humidity in November - Cos Cob, CT
  • Average humidity in November: 72%

The months with the highest relative humidity are February, May and December (75%).
The month with the lowest relative humidity is August (71%).

Average rainfall in November
Cos Cob, CT

Average rainfall in November - Cos Cob, CT
  • Average rainfall in November: 2.83"

The wettest month (with the highest rainfall) is July (4.13").
The driest months (with the least rainfall) are January and February (2.4").

Average rainfall days in November
Cos Cob, CT

Average rainfall days in November - Cos Cob, CT
  • Average rainfall days in November: 10.2 days

The month with the highest number of rainy days is July (18.1 days).
The month with the least rainy days is January (7.9 days).

Average snowfall in November
Cos Cob, CT

Average snowfall in November - Cos Cob, CT
  • Average snowfall in November: 0.24"

The month with the highest snowfall is February (2.52").
The months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days in November
Cos Cob, CT

Average snowfall days in November - Cos Cob, CT
  • Average snowfall days in November: 1 days

The month with the highest number of snowfall days is January (7.2 days).
The months with the least snowfall days are June, July, August, September and October (0 days).

Average sea temperature in November
Cos Cob, CT

Average sea temperature in November - Cos Cob, CT
  • Average sea temperature in November: 53.8°F

The best month for swimming (with the highest average sea temperature) is August (73.1°F).
The coldest month (with the lowest average sea temperature) is February (39.5°F).

Average daylight in November /
Average sunshine in November
Cos Cob, CT

Average daylight in November / Average sunshine in November - Cos Cob, CT
  • Average daylight in November: 9h and 5min

The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).

  • Average sunshine in November: 5h and 4min

The month with the most sunshine is July (Average sunshine: 10h and 30min).
The month with the least sunshine is February (Average sunshine: 4h and 42min).

Average sunshine days in November
Cos Cob, CT

Average sunshine days in November - Cos Cob, CT
  • Average sunshine days in November: 17.8 days

The month with the most sunshine days is November (17.8 days).
The month with the least sunshine days is June (10.7 days).

Average UV index in November
Cos Cob, CT

Average UV index in November - Cos Cob, CT
  • Average UV index in November: 2

The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).

Average cloud cover in November
Cos Cob, CT

Average cloud cover in November - Cos Cob, CT
  • Average cloud cover in November: 38

The month with the most cloud cover is December (Cloud cover 49).
The month with the least cloud cover is August (Cloud cover 31).

Average visibility in November
Cos Cob, CT

Average visibility in November - Cos Cob, CT
  • Average visibility in November: 6mi

The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).

Cos Cob, Connecticut, USA

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