October weather forecast
Cos Cob, CT

Weather in October

October, like September, in Cos Cob, Connecticut, is another enjoyable autumn month, with temperature in the range of an average high of 62.4°F (16.9°C) and an average low of 51.8°F (11°C).

Temperature

In October, the average high-temperature decreases from a warm 73.4°F (23°C) in September to a comfortable 62.4°F (16.9°C). In October, the average low-temperature is 51.8°F (11°C).

Humidity

The average relative humidity in October is 74%.

Rainfall

In Cos Cob, in October, during 13.8 rainfall days, 3.46" (88mm) of precipitation is typically accumulated. Throughout the year, in Cos Cob, there are 165.6 rainfall days, and 37.64" (956mm) of precipitation is accumulated.

Snowfall

In Cos Cob, snow does not fall in May through October.

Ocean temperature

In October, the average ocean temperature in Cos Cob, Connecticut, is 62.2°F (16.8°C).
Note: For swimming, a surface water temperature of 62.2°F (16.8°C) is not enjoyable for the majority. It is not considered safe, as controlling breathing becomes progressively more difficult as water temperature decreases below 69.8°F (21°C).

Daylight

The average length of the day in October in Cos Cob is 11h and 6min.
On the first day of the month, sunrise is at 6:51 am and sunset at 6:36 pm. On the last day of October, in Cos Cob, sunrise is at 7:24 am and sunset at 5:51 pm EDT.

Sunshine

In October, the average sunshine is 5.8h.

UV index

The average daily maximum UV index in October is 3. A UV Index of 3 to 5 symbolizes a moderate health risk from unsafe exposure to UV radiation for average individuals.
Note: The daily maximum UV index of 3 in October interpret into the following advice:
Take precautions. Light skin individuals may get burned in less than 30 minutes. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.
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FAQ

What is the average humidity in October in Cos Cob?

In October, the average relative humidity in Cos Cob is 74%.

How much does it rain in Cos Cob in October?

In October, the rain falls for 13.8 days. Throughout October, 3.46" (88mm) of precipitation is accumulated.

When it does not snow in Cos Cob?

In Cos Cob, Connecticut, snow does not fall in May through October.

Does it snow in Cos Cob in October?

In Cos Cob, Connecticut, in October, it doesn't snow. In November, it regularly snows.

What is the ocean temperature in October in Cos Cob?

In Cos Cob, in October, the average water temperature is 62.2°F (16.8°C). For most, swimming in 62.2°F (16.8°C) is not an enjoyable activity. Furthermore, controlling your breathing becomes progressively more difficult as the water temperature decreases from 69.8°F (21°C) to 59°F (15°C).

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

The average day length in October in Cos Cob is 11h and 6min.

When are sunrise and sunset in October in Cos Cob?

In October, on the first day of the month, sunrise is at 6:51 am and sunset at 6:36 pm. On the last day of the month, in Cos Cob, Connecticut, sunrise is at 7:24 am and sunset at 5:51 pm EDT.

How long on average sun shines in October in Cos Cob?

In Cos Cob, the average sunshine duration in October is 5.8h.

How high is the UV index in October in Cos Cob?

In October, the average daily maximum UV index in Cos Cob, Connecticut, is 3. A UV Index of 3 to 5 symbolizes a moderate vulnerability from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in October
Cos Cob, CT

Average temperature in October - Cos Cob, CT
  • Average high temperature in October: 62.4°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 October: 51.8°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).

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Average pressure in October
Cos Cob, CT

Average pressure in October - Cos Cob, CT
  • Average pressure in October: 30.02"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).

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Average wind speed in October
Cos Cob, CT

Average wind speed in October - Cos Cob, CT
  • Average wind speed in October: 8.8mph

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).

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Average humidity in October
Cos Cob, CT

Average humidity in October - Cos Cob, CT
  • Average humidity in October: 74%

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

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Average rainfall in October
Cos Cob, CT

Average rainfall in October - Cos Cob, CT
  • Average rainfall in October: 3.46"

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

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Average rainfall days in October
Cos Cob, CT

Average rainfall days in October - Cos Cob, CT
  • Average rainfall days in October: 13.8 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).

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Average snowfall in October
Cos Cob, CT

Average snowfall in October - Cos Cob, CT
  • Average snowfall in October: 0"

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").

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Average snowfall days in October
Cos Cob, CT

Average snowfall days in October - Cos Cob, CT
  • Average snowfall days in October: 0 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).

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Average sea temperature in October
Cos Cob, CT

Average sea temperature in October - Cos Cob, CT
  • Average sea temperature in October: 62.2°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).

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

Average daylight in October / Average sunshine in October - Cos Cob, CT
  • Average daylight in October: 11h and 6min

The month with the longest days is June (Average daylight: 15h and 5min).
The month with the shortest days is December (Average daylight: 9h and 17min).

  • Average sunshine in October: 5h and 48min

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).

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Average sunshine days in October
Cos Cob, CT

Average sunshine days in October - Cos Cob, CT
  • Average sunshine days in October: 15 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).

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Average UV index in October
Cos Cob, CT

Average UV index in October - Cos Cob, CT
  • Average UV index in October: 3

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).

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Average cloud cover in October
Cos Cob, CT

Average cloud cover in October - Cos Cob, CT
  • Average cloud cover in October: 42

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

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Average visibility in October
Cos Cob, CT

Average visibility in October - Cos Cob, CT
  • Average visibility in October: 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).

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