March weather forecast
New Haven, CT

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The greeny New Haven Green in Connecticut, with the rest of the city and a far away dramatic landscape
The greeny New Haven Green in Connecticut, with the rest of the city and a far away dramatic landscape

Weather in March

As New Haven moves into March, the weather shows signs of gradual warming. Compared to the prior month, March is warmer with an appreciable increase in daylight hours, indicating towards the approach of spring season. Scarce snowfalls are replaced by rainfall as the primary form of precipitation, making the city gleam anew. March is known for its calmness before the energizing bustle of spring. The seawater temperature also rises marginally, signaling the marine life of the coming season change.

Temperature

March's arrival in New Haven is noted with a slight increase in the average high-temperature, moving from a wintry 37.9°F (3.3°C) in February to a frosty 43.9°F (6.6°C). During the nights in March, New Haven experiences a consistent average temperature of 33.1°F (0.6°C).

Humidity

The average relative humidity in March is 73%.

Rainfall

In March, in New Haven, the rain falls for 12.6 days. Throughout March, 2.8" (71mm) of precipitation is accumulated. Throughout the year, there are 167.2 rainfall days, and 35.71" (907mm) of precipitation is accumulated.

Snowfall

January through April, November and December are months with snowfall. March is the month with the most snowfall. Snow falls for 4.8 days and accumulates 2.8" (71mm) of snow.

Ocean temperature

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

Daylight

In New Haven, the average length of the day in March is 11h and 58min.
On the first day of March in New Haven, sunrise is at 6:24 am and sunset at 5:42 pm EST. On the last day of the month, sunrise is at 6:35 am and sunset at 7:16 pm EDT.
Note: On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, and the time zone changes from EST to EDT. Daylight Saving Time lasts until Sunday, November 3. 2024, at 2:00 am; consequently, the time zone reverts from EDT to EST.

Sunshine

In March, the average sunshine in New Haven is 6.4h.

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 estimate of 2, and below, represents a low threat to health from unsafe exposure to UV radiation for the average person.
Note: In March, the UV index of 2 transforms into the following advice:
Most individuals face no major issues with lengthy exposure to the sun, but children, infants, and individuals with fair skin always require protection. When the Sun is at its strongest around midday, find shade and limit exposure. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Take heed! The reflection of snow can intensify the Sun's UV radiation nearly double.

Frequently asked questions

How cold is March in New Haven?

The average high-temperature and low-temperature in New Haven, Connecticut, during March are 43.9°F (6.6°C) and 33.1°F (0.6°C) respectively.

What is the average humidity in March in New Haven?

The average relative humidity in March in New Haven is 73%.

How many days does it rain in March in New Haven?

In March, the rain falls for 12.6 days. Throughout March, 2.8" (71mm) of precipitation is accumulated.

What is the snowiest month in New Haven?

March is the month with the most snowfall in New Haven. Snow falls for 4.8 days and accumulates 2.8" (71mm) of snow.

How much does it snow in New Haven in March?

In New Haven, in March, during 4.8 snowfall days, 2.8" (71mm) of snow is typically accumulated.

What is the water temperature in March in New Haven?

In New Haven, 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 New Haven?

In March, the average day length in New Haven is 11h and 58min.

When are sunrise and sunset in March in New Haven?

On the first day of March in New Haven, Connecticut, sunrise is at 6:24 am and sunset at 5:42 pm EST. On the last day of the month, sunrise is at 6:35 am and sunset at 7:16 pm EDT.

When does Daylight Saving Time (DST) start in March in New Haven?

On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in New Haven, and the time zone changes from EST to EDT. DST ends Sunday, November 3. 2024, at 2:00 am.

How long on average sun shines in March in New Haven?

The average sunshine duration in March in New Haven is 6.4h.

What are the months with the lowest UV index in New Haven?

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

What is the UV index intensity in March in New Haven?

The average daily maximum UV index in March in New Haven, Connecticut, is 2. A UV Index reading of 2, and below, represents a minimal health vulnerability from exposure to Sun's UV rays.
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 March
New Haven, CT

Average temperature in March - New Haven, CT
  • Average high temperature in March: 43.9°F

The warmest month (with the highest average high temperature) is July (80.4°F).
The month with the lowest average high temperature is January (35.1°F).

  • Average low temperature in March: 33.1°F

The month with the highest average low temperature is July (67.6°F).
The coldest month (with the lowest average low temperature) is January (25.5°F).

Average pressure in March
New Haven, CT

Average pressure in March - New Haven, CT
  • Average pressure in March: 30.04"Hg

The month with the highest atmospheric pressure is November (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

Average wind speed in March
New Haven, CT

Average wind speed in March - New Haven, CT
  • Average wind speed in March: 10.1mph

The windiest month (with the highest average wind speed) is January (10.4mph).
The calmest months (with the lowest average wind speed) are July and August (6.8mph).

Average humidity in March
New Haven, CT

Average humidity in March - New Haven, CT
  • Average humidity in March: 73%

The months with the highest relative humidity are February, May and June (76%).
The months with the lowest relative humidity are April and November (72%).

Average rainfall in March
New Haven, CT

Average rainfall in March - New Haven, CT
  • Average rainfall in March: 2.8"

The wettest month (with the highest rainfall) is December (3.86").
The driest month (with the least rainfall) is September (2.24").

Average rainfall days in March
New Haven, CT

Average rainfall days in March - New Haven, CT
  • Average rainfall days in March: 12.6 days

The month with the highest number of rainy days is July (18 days).
The month with the least rainy days is January (9.4 days).

Average snowfall in March
New Haven, CT

Average snowfall in March - New Haven, CT
  • Average snowfall in March: 2.8"

The month with the highest snowfall is March (2.8").
The months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days in March
New Haven, CT

Average snowfall days in March - New Haven, CT
  • Average snowfall days in March: 4.8 days

The month with the highest number of snowfall days is February (7.3 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average sea temperature in March
New Haven, CT

Average sea temperature in March - New Haven, CT
  • Average sea temperature in March: 39.7°F

The best month for swimming (with the highest average sea temperature) is August (73°F).
The coldest month (with the lowest average sea temperature) is February (38.5°F).

Average daylight in March /
Average sunshine in March
New Haven, CT

Average daylight in March / Average sunshine in March - New Haven, CT
  • Average daylight in March: 12h and 0min

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 March: 6h and 2min

The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is February (Average sunshine: 4h and 42min).

Average sunshine days in March
New Haven, CT

Average sunshine days in March - New Haven, CT
  • Average sunshine days in March: 13.5 days

The month with the most sunshine days is November (17.3 days).
The month with the least sunshine days is August (11.3 days).

Average UV index in March
New Haven, CT

Average UV index in March - New Haven, 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).

Average cloud cover in March
New Haven, CT

Average cloud cover in March - New Haven, CT
  • Average cloud cover in March: 47

The months with the most cloud cover are February and December (Cloud cover 48).
The month with the least cloud cover is August (Cloud cover 29).

Average visibility in March
New Haven, CT

Average visibility in March - New Haven, 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).

New Haven, Connecticut, USA

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