March weather forecast
Groton, CT

Weather in March

The first month of the spring, March, is a chilly month in Groton, Connecticut, with an average temperature fluctuating between 32.9°F (0.5°C) and 43.3°F (6.3°C).

Temperature

In March, the average high-temperature slightly increases from a wintry 37.9°F (3.3°C) in February to a chilly 43.3°F (6.3°C). In March, in Groton, the average low-temperature is 32.9°F (0.5°C).

Humidity

The months with the lowest humidity in Groton, Connecticut, are January, March, April and November, with an average relative humidity of 74%.

Rainfall

In Groton, during March, the rain falls for 13.8 days and regularly aggregates up to 2.95" (75mm) of precipitation. In Groton, Connecticut, during the entire year, the rain falls for 159.8 days and collects up to 33.07" (840mm) of precipitation.

Snowfall

Months with snowfall in Groton are January through April, November and December. The month with the most snowfall in Groton is March, when snow falls for 5.1 days and typically aggregates up to 2.56" (65mm) of snow.

Ocean temperature

In March, the average ocean temperature in Groton 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 March, the average length of the day in Groton is 11h and 58min.
On the first day of March, sunrise is at 6:22 am and sunset at 5:38 pm EST. On the last day of the month, sunrise is at 6:32 am and sunset at 7:12 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 March, the average sunshine is 6.2h.

UV index

The months with the lowest UV index in Groton 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 minimal health hazard from unprotected exposure to Sun's UV rays for the average person.
Note: The average daily UV index of 2 in March transform into the following instructions:
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. 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. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
[Resources]

FAQ

What are the least humid months in Groton?

The months with the lowest humidity in Groton, Connecticut, are January, March, April and November, with an average relative humidity of 74%.

What is the average humidity in March in Groton?

In March, the average relative humidity in Groton, Connecticut, is 74%.

How much does it rain in Groton in March?

In Groton, in March, during 13.8 rainfall days, 2.95" (75mm) of precipitation is typically accumulated.

When does it snow the most in Groton?

March is the month with the most snowfall in Groton. Snow falls for 5.1 days and accumulates 2.56" (65mm) of snow.

How much does it snow in Groton in March?

In Groton, in March, during 5.1 snowfall days, 2.56" (65mm) of snow is typically accumulated.

What is the water temperature in March in Groton?

In Groton, the average seawater temperature in March 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.

How many hours of daylight does Groton have in March?

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

What time are sunrise and sunset in March in Groton?

On the first day of March in Groton, Connecticut, sunrise is at 6:22 am and sunset at 5:38 pm EST. On the last day of the month, sunrise is at 6:32 am and sunset at 7:12 pm EDT.

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

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

How long on average sun shines in March in Groton?

The average sunshine duration in March in Groton, Connecticut, is 6.2h.

When is the lowest UV index in Groton?

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

What is the UV index intensity in March in Groton?

The average daily maximum UV index in March in Groton is 2. A UV Index reading of 2, and below, represents a low health risk 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
Groton, CT

Average temperature in March - Groton, CT
  • Average high temperature in March: 43.3°F

The warmest month (with the highest average high temperature) is July (78.6°F).
The month with the lowest average high temperature is January (36.1°F).

  • Average low temperature in March: 32.9°F

The month with the highest average low temperature is July (66.7°F).
The coldest month (with the lowest average low temperature) is January (26.2°F).

[Resources]

Average pressure in March
Groton, CT

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

The month with the highest atmospheric pressure is November (30.08"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

[Resources]

Average wind speed in March
Groton, CT

Average wind speed in March - Groton, CT
  • Average wind speed in March: 11.4mph

The windiest month (with the highest average wind speed) is January (11.9mph).
The calmest months (with the lowest average wind speed) are July and August (7.8mph).

[Resources]

Average humidity in March
Groton, CT

Average humidity in March - Groton, CT
  • Average humidity in March: 74%

The month with the highest relative humidity is June (80%).
The months with the lowest relative humidity are January, March, April and November (74%).

[Resources]

Average rainfall in March
Groton, CT

Average rainfall in March - Groton, CT
  • Average rainfall in March: 2.95"

The wettest month (with the highest rainfall) is December (3.86").
The driest month (with the least rainfall) is September (1.65").

[Resources]

Average rainfall days in March
Groton, CT

Average rainfall days in March - Groton, CT
  • Average rainfall days in March: 13.8 days

The month with the highest number of rainy days is July (15.8 days).
The month with the least rainy days is February (9.5 days).

[Resources]

Average snowfall in March
Groton, CT

Average snowfall in March - Groton, CT
  • Average snowfall in March: 2.56"

The month with the highest snowfall is March (2.56").
The months with the least snowfall are May, June, July, August, September and October (0").

[Resources]

Average snowfall days in March
Groton, CT

Average snowfall days in March - Groton, CT
  • Average snowfall days in March: 5.1 days

The month with the highest number of snowfall days is February (6.8 days).
The months with the least snowfall days are June, July, August, September and October (0 days).

[Resources]

Average sea temperature in March
Groton, CT

Average sea temperature in March - Groton, CT
  • Average sea temperature in March: 39.8°F

The best month for swimming (with the highest average sea temperature) is August (72.1°F).
The coldest month (with the lowest average sea temperature) is February (38.8°F).

[Resources]

Average daylight in March /
Average sunshine in March
Groton, CT

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

The month with the longest days is June (Average daylight: 15h and 7min).
The month with the shortest days is December (Average daylight: 9h and 15min).

  • Average sunshine in March: 6h and 12min

The month with the most sunshine is August (Average sunshine: 10h and 36min).
The months with the least sunshine are February and December (Average sunshine: 4h and 54min).

[Resources]

Average sunshine days in March
Groton, CT

Average sunshine days in March - Groton, CT
  • Average sunshine days in March: 13.5 days

The month with the most sunshine days is November (16.5 days).
The month with the least sunshine days is February (12.5 days).

[Resources]

Average UV index in March
Groton, CT

Average UV index in March - Groton, 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
Groton, CT

Average cloud cover in March - Groton, CT
  • Average cloud cover in March: 47

The months with the most cloud cover are February, March and December (Cloud cover 47).
The month with the least cloud cover is August (Cloud cover 29).

[Resources]

Average visibility in March
Groton, CT

Average visibility in March - Groton, 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