Boston
Massachusetts, USA
Long-term weather forecast
Long-term weather forecast

March weather forecast and climate
Boston, MA

A beautiful natural park with the George Washington Monument in Boston, Massachusetts, with a sneak view of the city skyscrapers
A beautiful natural park with the George Washington Monument in Boston, Massachusetts, with a sneak view of the city skyscrapers
The first month of the spring, March, is a chilly month in Boston, Massachusetts, with temperature in the range of an average high of 43.5°F (6.4°C) and an average low of 30.9°F (-0.6°C).

Temperature

In March, the average high-temperature slightly increases, from a wintry 36.5°F (2.5°C) in February, to a chilly 43.5°F (6.4°C). In Boston, in March, the average low-temperature is 30.9°F (-0.6°C).

Humidity

In March, the average relative humidity in Boston, Massachusetts, is 73%.

Rainfall

The wettest months are March, April and December, with an average 2.91" (74mm) of rainfall.

Snowfall

January through May, October through December are months with snowfall in Boston. In Boston, snow falls for 6.8 days, with typically accumulated 3.86" (98mm) of snow. In Boston, during the entire year, snow falls for 29.8 days, and aggregates up to 15.75" (400mm) of snow.

Ocean temperature

In March, the average ocean temperature in Boston is 38.3°F (3.5°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 Boston, Massachusetts, the average length of the day in March is 12h.

Sunshine

The average sunshine in March is 5.6h.

UV index

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 minimal health hazard from unsafe exposure to the UV radiation for the average 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. 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. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.

What is the temperature in March in Boston?

The average high-temperature, in March, is 43.5°F (6.4°C), while the average low-temperature is 30.9°F (-0.6°C).

What is the average humidity in March in Boston?

In Boston, Massachusetts, the average relative humidity in March is 73%.

How many days does it rain in March in Boston?

In March, the rain falls for 11.6 days. Throughout March, 2.91" (74mm) of precipitation is accumulated.

What is the wettest month in Boston?

The wettest months in Boston are March, April and December, with an average 2.91" (74mm) of rainfall.

How much does it snow in Boston in March?

In Boston, Massachusetts, in March, snow falls for 6.8 days, with typically accumulated 3.86" (98mm) of snow.

How cold is the water in March in Boston?

In Boston, Massachusetts, in March, the average water temperature is 38.3°F (3.5°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 Boston have in March?

In Boston, the average length of the day in March is 12h.

How many hours of sunshine does Boston have in March?

The average sunshine in March in Boston is 5.6h.

What is the month with the lowest UV index in Boston?

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

What is the UV index reading in March in Boston?

The average daily maximum UV index in March is 2. A UV Index value of 2, and less, symbolizes a minimal hazard to health from unprotected exposure to the UV radiation.
Average temperature in March - Boston, MA
  • Average high temperature in March: 43.5°F

The warmest month (with the highest average high temperature) is July (81.7°F).
The month with the lowest average high temperature is January (34.2°F).

  • Average low temperature in March: 30.9°F

The month with the highest average low temperature is July (64.9°F).
The coldest month (with the lowest average low temperature) is January (22.6°F).

Average humidity in March - Boston, MA
  • Average humidity in March: 73%

The month with the highest relative humidity is February (77%).
The month with the lowest relative humidity is April (69%).

Average rainfall in March - Boston, MA
  • Average rainfall in March: 2.91"

Wettest months (with the highest rainfall) are March, April and December (2.91").
The driest month (with the lowest rainfall) is September (1.26").

Average rainfall days in March - Boston, MA
  • Average rainfall days in March: 11.6 days

The month with the highest number of rainy days is May (15.3 days).
The month with the lowest number of rainy days is January (7.9 days).

Average snowfall in March - Boston, MA
  • Average snowfall in March: 3.86"

The month with the highest snowfall is February (4.72").
Months with the lowest snowfall are June, July, August and September (0").

Average snowfall days in March - Boston, MA
  • Average snowfall days in March: 6.8 days

Months with the highest number of snowfall days are January and February (7.6 days).
Months with the lowest number of snowfall days are June, July, August and September (0 days).

Average sea temperature in March - Boston, MA
  • Average sea temperature in March: 38.4°F

The best month for swimming (with the highest average sea temperature) is August (67.9°F).
The coldest month (with the lowest average sea temperature) is February (38.1°F).

Average daylight in March / Average sunshine in March - Boston, MA
  • Average daylight in March: 12h

The month with the longest days is June (Average daylight: 15.2h).
The month with shortest days is December (Average daylight: 9.1h).

  • Average sunshine in March: 5.6h

The month with most sunshine is August (Average sunshine: 10.5h).
The month with least sunshine is February (Average sunshine: 4.6h).

Average UV index in March - Boston, MA
  • Average UV index in March: 2

Months with the highest UV index are June, July and August (UV index 6).
Months with the lowest UV index are January, February, March, November and December (UV index 2).