Boston
Massachusetts, USA
Long-term weather forecast
Long-term weather forecast
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March weather forecast and Climate
Boston, MA

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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
March is the rainiest month of the year in Boston. There are approximately eleven and a half rainfall days, and the rain gauge collects the highest 4.3" (109.2mm) in precipitation.
The weather is winter-like with a low temperature in the range of 31.1°F (-0.5°C) and 45.3°F (7.4°C). The first half of March is cold and wintery, but the second half becomes mildly cool as spring is ushered in.
Snowfall is experienced for approximately four days, accumulating to 7.8" (198.1mm) on the ground. Mild snowstorms and extreme cold waves are occasionally experienced during this period, making the nights feel very cold. With approximately seven hours of sunshine per day, the daytimes are a lot warmer, and basking is common.
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  • The average high temperature in March: 7.4°C

The warmest month (with the highest average high temperature) is July (27.4°C).
The month with the lowest average high temperature is January (2.1°C).

  • The average low temperature in March: -0.5°C

The month with the highest average low temperature is July (18.6°C).
The coldest month (with the lowest average low temperature) is January (-5.4°C).

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  • The average humidity in March: 63.1%

The month with the highest relative humidity is September (71.8%).
The month with the lowest relative humidity is February (62%).

  • The average rainfall in March: 109.7mm

The wettest month (with the highest rainfall) is March (109.7mm).
The driest month (with the lowest rainfall) is February (82.6mm).

  • The average rainfall days in March: 11.6 days

The month with the highest number of rainy days is May (12 days).
The month with the lowest number of rainy days is September (8.6 days).

  • The average snowfall in March: 198.1mm

The month with the highest snowfall is January (327.7mm).
Months with the lowest snowfall are May, June, July, August, September and October (0mm).

  • The average snowfall days in March: 4.2 days

The month with the highest number of snowfall days is January (6.7 days).
Months with the lowest number of snowfall days are May, June, July, August and September (0 days).

  • The 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).

  • The average daylight in March: 12h

Months with the longest days are May, June and July (Average daylight: 15h).
Months with shortest days are January and December (Average daylight: 9h).

  • The average sunshine in March: 6.9h

The month with most sunshine is July (Average sunshine: 9.7h).
The month with least sunshine is December (Average sunshine: 4.6h).

  • The average UV index in March: 4

Months with the highest UV index are June, July and August (UV index 8).
Months with the lowest UV index are January and December (UV index 1).

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