March weather forecast
Cos Cob, CT

Weather in March

The first month of the spring, March, is a frosty month in Cos Cob, Connecticut, with an average temperature fluctuating between 45°F (7.2°C) and 33.8°F (1°C).

Temperature

In Cos Cob, Connecticut, the average high-temperature in March slightly increases from a wintry 38.3°F (3.5°C) in February to a chilly 45°F (7.2°C). In Cos Cob, Connecticut, the average low-temperature is 33.8°F (1°C).

Humidity

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

Rainfall

In Cos Cob, during March, the rain falls for 12.8 days and regularly aggregates up to 2.83" (72mm) of precipitation. In Cos Cob, Connecticut, during the entire year, the rain falls for 165.6 days and collects up to 37.64" (956mm) of precipitation.

Snowfall

Months with snowfall in Cos Cob, Connecticut, are January through April, November and December. In Cos Cob, snow falls for 5 days, with typically accumulated 2.36" (60mm) of snow. Throughout the year, in Cos Cob, there are 25.5 snowfall days, and 8.78" (223mm) of snow is accumulated.

Ocean temperature

In Cos Cob, in March, the average water temperature is 39.7°F (4.3°C).
Note: For swimming, this is considered very dangerous and immediately life-threatening. Total loss of breathing control instantly occurs, and clear thinking becomes almost impossible. A specialized swimsuit is obligatory to minimize thermal loss.

Daylight

In Cos Cob, the average length of the day in March is 11h and 58min.
On the first day of March, sunrise is at 6:28 am and sunset at 5:45 pm EST. On the last day of the month, sunrise is at 6:38 am and sunset at 7:18 pm EDT.
Note: On Sunday, March 13. 2022, at 2:00 am, Daylight Saving Time starts, and the time zone changes from EST to EDT. Daylight Saving Time lasts until Sunday, November 6. 2022, at 2:00 am; consequently, the time zone reverts from EDT to EST.

Sunshine

In Cos Cob, the average sunshine in March is 6.2h.

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 of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV radiation for the ordinary person.
Note: In March, the average maximum UV index of 2 translate into the following recommendations:
Most people can stay in the Sun for up to 1 hour without burning, apart from children that always must be protected from sun exposure. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
[Resources]

FAQ

What is the temperature in March in Cos Cob?

In March, in Cos Cob, the average high-temperature is 45°F (7.2°C), and the average low-temperature is 33.8°F (1°C).

What is the average humidity in March in Cos Cob?

The average relative humidity in March in Cos Cob is 73%.

How much does it rain in Cos Cob in March?

In Cos Cob, in March, it is raining for 12.8 days, with typically 2.83" (72mm) of accumulated precipitation.

How many days does it snow in March in Cos Cob?

In Cos Cob, in March, during 5 snowfall days, 2.36" (60mm) of snow is typically accumulated.

What is the ocean temperature in March in Cos Cob?

In Cos Cob, in March, the average water temperature is 39.7°F (4.3°C). For swimming, this is considered extremely cold, dangerous, and life-threatening. Unless suitably protected with insulated waterproof clothing, hypothermia quickly occurs.

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

In Cos Cob, Connecticut, the average day length in March is 11h and 58min.

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

In March, on the first day of the month, sunrise is at 6:28 am and sunset at 5:45 pm EST. On the last day of the month, in Cos Cob, sunrise is at 6:38 am and sunset at 7:18 pm EDT.

When does Daylight Saving Time (DST) start in March in Cos Cob?

On Sunday, March 13. 2022, at 2:00 am, Daylight Saving Time starts in Cos Cob, Connecticut, and the time zone changes from EST to EDT. DST ends Sunday, November 6. 2022, at 2:00 am.

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

In Cos Cob, the average sunshine duration in March is 6.2h.

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

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

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

In Cos Cob, Connecticut, the average daily maximum UV index in March is 2. A UV Index of 2, and less, symbolizes a low health threat from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall days
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in March
Cos Cob, CT

Average temperature in March - Cos Cob, CT
  • Average high temperature in March: 45°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 March: 33.8°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).

[Resources]

Average pressure in March
Cos Cob, CT

Average pressure in March - Cos Cob, CT
  • Average pressure in March: 30.05"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).

[Resources]

Average wind speed in March
Cos Cob, CT

Average wind speed in March - Cos Cob, CT
  • Average wind speed in March: 9.7mph

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).

[Resources]

Average humidity in March
Cos Cob, CT

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

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

[Resources]

Average rainfall in March
Cos Cob, CT

Average rainfall in March - Cos Cob, CT
  • Average rainfall in March: 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").

[Resources]

Average rainfall days in March
Cos Cob, CT

Average rainfall days in March - Cos Cob, CT
  • Average rainfall days in March: 12.8 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).

[Resources]

Average snowfall in March
Cos Cob, CT

Average snowfall in March - Cos Cob, CT
  • Average snowfall in March: 2.36"

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").

[Resources]

Average snowfall days in March
Cos Cob, CT

Average snowfall days in March - Cos Cob, CT
  • Average snowfall days in March: 5 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).

[Resources]

Average sea temperature in March
Cos Cob, CT

Average sea temperature in March - Cos Cob, CT
  • Average sea temperature in March: 39.7°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).

[Resources]

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

Average daylight in March / Average sunshine in March - Cos Cob, CT
  • Average daylight in March: 11h and 58min

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 March: 6h and 12min

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).

[Resources]

Average sunshine days in March
Cos Cob, CT

Average sunshine days in March - Cos Cob, CT
  • Average sunshine days in March: 14 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).

[Resources]

Average UV index in March
Cos Cob, CT

Average UV index in March - Cos Cob, CT
  • Average UV index in March: 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).

[Resources]

Average cloud cover in March
Cos Cob, CT

Average cloud cover in March - Cos Cob, CT
  • Average cloud cover in March: 48

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

[Resources]

Average visibility in March
Cos Cob, CT

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

[Resources]

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location
* you will be automatically redirected to the weather forecast for your location