March weather forecast
Boston, MA

A beautiful natural park with the George Washington Monument in Boston, Massachusetts
A beautiful natural park with the George Washington Monument in Boston, Massachusetts

Weather in March

The first month of the spring, March, is a frosty month in Boston, Massachusetts, with temperature in the range of an average low of 30.9°F (-0.6°C) and an average high of 43.5°F (6.4°C).

Temperature

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

Humidity

The average relative humidity in March 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, Massachusetts,, during 6.8 snowfall days, 3.86" (98mm) of snow is typically accumulated. In Boston, during the entire year, snow falls for 29.8 days, and aggregates up to 15.75" (400mm) of snow.

Ocean temperature

In Boston, the average water temperature is 38.3°F (3.5°C).
Note: For swimming, this is considered life-threatening and very dangerous. The water feels painfully cold, and hyperventilation quickly occurs. A specialized swimsuit is mandatory to reduce thermal damage.

Daylight

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

Sunshine

In Boston, the average sunshine is 5.6h.

UV index

January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Boston. A UV Index estimate of 2, and below, represents a minimal health vulnerability from unsafe exposure to the UV radiation for average individuals.
Note: The daily maximum UV index of 2 interpret into the following advice:
For the majority, extended sun exposure is not of great concern. Infants and people with sensitive skin must always be protected. 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 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.
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FAQ

What is the average humidity in March in Boston?

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

What is the wettest month in Boston?

Months with the most rainfall in Boston are March, April and December, with an average 2.91" (74mm) of precipitation.

How much does it rain in Boston in March?

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

How much does it snow in Boston in March?

In Boston, Massachusetts, during March, snow falls for 6.8 days and regularly aggregates up to 3.86" (98mm) of snow.

What is the water temperature 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.

What is the average length of the day in March in Boston?

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

How long on average sun shines in March in Boston?

The average sunshine in March is 5.6h.

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

Months with the lowest UV index in Boston, Massachusetts, are January through March, November and December, with an average maximum UV index of 2.

What is the UV index reading in March in Boston?

The average daily maximum UV index in March in Boston, Massachusetts, is 2. A UV Index reading of 2, and below, represents a low health threat from the exposure to the Sun's UV rays.

Average temperature in March
Boston, MA

Average temperature in March - Boston, MA
  • Average high temperature in March: 6.4°C

The warmest month (with the highest average high temperature) is July (27.6°C).
The month with the lowest average high temperature is January (1.2°C).

  • Average low temperature in March: -0.6°C

The month with the highest average low temperature is July (18.3°C).
The coldest month (with the lowest average low temperature) is January (-5.2°C).

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Average pressure in March
Boston, MA

Average pressure in March - Boston, MA
  • Average pressure in March: 1016.8mbar

The month with the highest atmospheric pressure is November (1018.1mbar).
The month with the lowest atmospheric pressure is June (1013.4mbar).

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Average wind speed in March
Boston, MA

Average wind speed in March - Boston, MA
  • Average wind speed in March: 15.2km/h

The windiest month (with the highest average wind speed) is January (15.9km/h).
The calmest month (with the lowest average wind speed) is August (9.9km/h).

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Average humidity in March
Boston, MA

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%).

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Average rainfall in March
Boston, MA

Average rainfall in March - Boston, MA
  • Average rainfall in March: 74mm

The wettest months (with the highest rainfall) are March, April and December (74mm).
The driest month (with the least rainfall) is September (32mm).

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Average rainfall days in March
Boston, MA

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 least rainy days is January (7.9 days).

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Average snowfall in March
Boston, MA

Average snowfall in March - Boston, MA
  • Average snowfall in March: 98mm

The month with the highest snowfall is February (120mm).
Months with the least snowfall are June, July, August and September (0mm).

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Average snowfall days in March
Boston, MA

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 least snowfall days are June, July, August and September (0 days).

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Average sea temperature in March
Boston, MA

Average sea temperature in March - Boston, MA
  • Average sea temperature in March: 3.5°C

The best month for swimming (with the highest average sea temperature) is August (20°C).
The coldest month (with the lowest average sea temperature) is February (3.4°C).

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Average daylight in March /
Average sunshine in March
Boston, MA

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 the shortest days is December (Average daylight: 9.1h).

  • Average sunshine in March: 5.6h

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

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Average sunshine days in March
Boston, MA

Average sunshine days in March - Boston, MA
  • Average sunshine days in March: 14.8 days

The month with the most sunshine days is September (17.7 days).
The month with the least sunshine days is April (13 days).

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Average UV index in March
Boston, MA

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).

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Average cloud cover in March
Boston, MA

Average cloud cover in March - Boston, MA
  • Average cloud cover in March: 51

The month with the most cloud cover is March (Cloud cover 51).
The month with the least cloud cover is August (Cloud cover 32).

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Average visibility in March
Boston, MA

Average visibility in March - Boston, MA
  • Average visibility in March: 9km

Months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (9km).
Months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (9km).

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