July weather forecast
Cos Cob, CT

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Weather in July

The weather in Cos Cob in July reaches the peak of summer. The days are hot, significantly hotter than June, becoming the perfect time for a dip in the sea. Remarkably, July records the highest highs and lows of the year, from 82°F (27.8°C) to 69.1°F (20.6°C), but with the added comfort of sea breezes. The extended daylight hours up to 14.8 hours allow for prolonged beach trips and BBQ outings. It's clear that July in Cos Cob is the height of the summer season, encouraging all kinds of outdoor activities.

Temperature

July, noted for its average high-temperature of 82°F (27.8°C) and an average low-temperature of 69.1°F (20.6°C), is considered the warmest month.

Heat index

The heat index for July is appraised at a tropical 87.8°F (31°C). If exposure and activity persist, fatigue could ensue, possibly leading to heat cramps.
Records show heat index calculations are tailored for shaded regions and mild winds. The heat index values could be amplified by up to 15 Fahrenheit (8 Celsius) degrees in direct sunlight.
Note: The heat index, also known as 'felt air temperature' or 'feels like', marries air temperature and humidity to produce a value illustrating perceived warmth. This effect is personal, influenced by the individual's physical activity and heat sensitivity, shaped by factors including wind, attire, and metabolic variations. With the sun shining directly, it's crucial to understand that it can increase the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical for babies and toddlers. Children often overlook the necessity for resting and fluid replenishment. Thirst is a late sign of dehydration - thus, it is critical to stay hydrated, especially during extended periods of physical activities.

Humidity

In Cos Cob, the average relative humidity in July is 73%.

Rainfall

The month with the most rainfall in Cos Cob is July, when the rain falls for 18.1 days and typically aggregates up to 4.13" (105mm) of precipitation.

Snowfall

May through October are months without snowfall.

Ocean temperature

In Cos Cob, the average seawater temperature in July is 70.9°F (21.6°C).
Note: A majority do not enjoy swimming in water at 70.9°F (21.6°C). The difficulty in controlling breathing increases progressively as the temperature dips below 69.8°F (21°C).

Daylight

In Cos Cob, the average length of the day in July is 14h and 47min.
On the first day of the month, sunrise is at 5:26 am and sunset at 8:30 pm. On the last day of July, in Cos Cob, sunrise is at 5:50 am and sunset at 8:11 pm EDT.

Sunshine

July has the most sunshine of the year, with an average of 10.5h of sunshine.

UV index

June through August, with an average maximum UV index of 6, are months with the highest UV index in Cos Cob. A UV Index estimate of 6 to 7 represents a high threat to health from exposure to the Sun's UV radiation for the ordinary person.
Note: The daily high UV index of 6 in July translates into this advice:
Embrace precautions and observe sun safety norms. Evasion of sunburn is a necessity. To the best of your ability, limit your exposure to the sun between the hours of 10 a.m. and 4 p.m., when UV radiation is at its peak. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage. Be careful! The Sun's UV radiation is accentuated by reflecting off sand and water.
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Frequently asked questions

What part of the year is the hottest in Cos Cob?

July, with an average high of 82°F (27.8°C) and a low of 69.1°F (20.6°C), signifies the warmest month of the year.

What are the temperatures in Cos Cob in July?

The average high-temperature, in July, in Cos Cob, is 82°F (27.8°C), while the average low-temperature is 69.1°F (20.6°C). In July, the average heat index (a.k.a. 'real feel', 'feels like'), which combines relative humidity and air temperature, is appraised at 87.8°F (31°C).

What is the average humidity in July in Cos Cob?

In July, the average relative humidity in Cos Cob is 73%.

What is the rainiest month in Cos Cob?

July is the month with the most rainfall in Cos Cob, Connecticut. Rain falls for 18.1 days and accumulates 4.13" (105mm) of precipitation.

How many days does it rain in July in Cos Cob?

In July, in Cos Cob, the rain falls for 18.1 days. Throughout July, 4.13" (105mm) of precipitation is accumulated.

When it does not snow in Cos Cob?

May through October are months without snowfall in Cos Cob, Connecticut.

What is the ocean temperature in July in Cos Cob?

In Cos Cob, in July, the average water temperature is 70.9°F (21.6°C). For swimming, a surface water temperature of 70.9°F (21.6°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).

What is the average length of the day in July in Cos Cob?

In July, the average day length in Cos Cob, Connecticut, is 14h and 47min.

When are sunrise and sunset in July in Cos Cob?

In July, on the first day of the month, sunrise is at 5:26 am and sunset at 8:30 pm. On the last day of the month, in Cos Cob, sunrise is at 5:50 am and sunset at 8:11 pm EDT.

What month has the most sunshine in Cos Cob?

July has the most sunshine of the year, with an average of 10.5h of sunshine.

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

The average sunshine duration in July in Cos Cob is 10.5h.

What are the months with the highest UV index in Cos Cob?

The months with the highest UV index in Cos Cob are June through August, with an average maximum UV index of 6.

What is the UV index intensity in July in Cos Cob?

The average daily maximum UV index in July in Cos Cob, Connecticut, is 6. A UV Index value of 6 to 7 symbolizes a high health threat from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in July
Cos Cob, CT

Average temperature in July - Cos Cob, CT
  • Average high temperature in July: 82°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 July: 69.1°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 July
Cos Cob, CT

Average pressure in July - Cos Cob, CT
  • Average pressure in July: 29.96"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 July
Cos Cob, CT

Average wind speed in July - Cos Cob, CT
  • Average wind speed in July: 6.5mph

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 July
Cos Cob, CT

Average humidity in July - Cos Cob, CT
  • Average humidity in July: 73%

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 July
Cos Cob, CT

Average rainfall in July - Cos Cob, CT
  • Average rainfall in July: 4.13"

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 July
Cos Cob, CT

Average rainfall days in July - Cos Cob, CT
  • Average rainfall days in July: 18.1 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 July
Cos Cob, CT

Average snowfall in July - Cos Cob, CT
  • Average snowfall in July: 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 July
Cos Cob, CT

Average snowfall days in July - Cos Cob, CT
  • Average snowfall days in July: 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 July
Cos Cob, CT

Average sea temperature in July - Cos Cob, CT
  • Average sea temperature in July: 70.9°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 July /
Average sunshine in July
Cos Cob, CT

Average daylight in July / Average sunshine in July - Cos Cob, CT
  • Average daylight in July: 14h 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 July: 10h and 3min

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 July
Cos Cob, CT

Average sunshine days in July - Cos Cob, CT
  • Average sunshine days in July: 11.1 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 July
Cos Cob, CT

Average UV index in July - Cos Cob, CT
  • Average UV index in July: 6

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 July
Cos Cob, CT

Average cloud cover in July - Cos Cob, CT
  • Average cloud cover in July: 32

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 July
Cos Cob, CT

Average visibility in July - Cos Cob, CT
  • Average visibility in July: 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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Cos Cob, Connecticut, USA

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