March weather forecast
Boston, MA

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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

March in Boston is a transitional period, moving from winter to the refreshing spring season. Noticeable changes in the weather patterns occur as compared to February's dominant cold. The region witnesses highs and lows from 43.5°F (6.4°C) to 30.9°F (-0.6°C). Bostonians start shedding their wintery layers gradually, and occasional outdoor activities become delightful. Towards the end of the month, the city starts revealing its spring beauty, with the blooming of flowers in public parks and landscapes.

Temperature

March's onset brings a minor rise in the average high-temperature, moving from a cold 36.5°F (2.5°C) in February to a frosty 43.5°F (6.4°C). Throughout March, Boston registers a consistent average low-temperature of 30.9°F (-0.6°C).

Humidity

The average relative humidity in March is 73%.

Rainfall

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

Snowfall

January through May, October through December are months with snowfall. In Boston, in March, 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 Boston, in March, the average water temperature is 38.3°F (3.5°C).
Note: During swimming activities, this situation is lethal and fraught with danger. The frigid water triggers acute discomfort and swift hyperventilation. A specialized swimsuit is necessary to reduce thermal harm.

Daylight

The average length of the day in March is 11h and 58min.
On the first day of March in Boston, sunrise is at 6:18 am and sunset at 5:34 pm EST. On the last day of the month, sunrise is at 6:26 am and sunset at 7:09 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 Boston, the average sunshine in March 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. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from unprotected exposure to Sun's UV rays for the ordinary person.
Note: The average daily UV index of 2 in March transforms into the following instructions:
Most people face no serious problems with extended sun exposure, but those with fair skin, infants, and children always need protection. Limiting exposure to the direct Sun during midday hours can help prevent harmful UV radiation effects. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears. Be alert to the fact! The reflection from snow can nearly double the UV radiation of the Sun.
Updated: Jun 21, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How cold does it get in March?

The average high-temperature and low-temperature during March are 43.5°F (6.4°C) and 30.9°F (-0.6°C) respectively.

What is the average humidity in March?

In March, the average relative humidity is 73%.

What is the wettest month?

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

How much does it rain in March?

In Boston, in March, it is raining for 11.6 days, with typically 2.91" (74mm) of accumulated precipitation.

How many days does it snow in March?

In Boston, 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 March, the average water temperature is 38.3°F (3.5°C). 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.

How many hours of daylight does Boston have in March?

The average day length in March is 11h and 58min.

When is the sunrise / sunset in March in Boston?

On the first day of March, sunrise is at 6:18 am and sunset at 5:34 pm EST. On the last day of the month, sunrise is at 6:26 am and sunset at 7:09 pm EDT.

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

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

How many hours of sunshine does Boston have in March?

In March, the average sunshine duration is 5.6h.

What is the month with the lowest UV index?

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

What is the UV index intensity in March?

In Boston, the average daily maximum UV index in March is 2. A UV Index of 2, and less, symbolizes a minimal health vulnerability from unprotected exposure to UV radiation.
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
Boston, MA

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 pressure in March
Boston, MA

Average pressure in March - Boston, MA
  • Average pressure in March: 30.03"Hg

The month with the highest atmospheric pressure is November (30.06"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

Average wind speed in March
Boston, MA

Average wind speed in March - Boston, MA
  • Average wind speed in March: 9.4mph

The windiest month (with the highest average wind speed) is January (9.9mph).
The calmest month (with the lowest average wind speed) is August (6.2mph).

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%).

Average rainfall in March
Boston, MA

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

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

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).

Average snowfall in March
Boston, MA

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

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

Average snowfall days in March
Boston, MA

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

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

Average sea temperature in March
Boston, MA

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 / Average sunshine in March - Boston, MA
  • Average daylight in March: 12h and 0min

The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 6min).

  • Average sunshine in March: 5h and 4min

The month with the most sunshine is August (Average sunshine: 10h and 30min).
The month with the least sunshine is February (Average sunshine: 4h and 36min).

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).

Average UV index in March
Boston, MA

Average UV index in March - Boston, MA
  • 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
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).

Average visibility in March
Boston, MA

Average visibility in March - Boston, MA
  • 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).

Boston, Massachusetts, USA

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