Boston Weather in April

April brings a final transition to spring weather in Boston, Massachusetts. By the end of the month, the city has seen the last of frost and snow until fall.

This page gives detailed information on the typical April temperature, precipitation, sun, humidity, wind and storms for Boston. The numbers here are historical averages based on climate data gathered at Boston's Logan International Airport, located on the waterfront next to Boston Harbor.

Temperature Weather iconTemperature

56 °F April average high 14 °C
41 °F April average low 5 °C
11 days 60 °F max. or more (16 °C)
14 days 40 °F min. or less (4 °C)

Daytime temperatures in Boston are always above freezing in April and most days make it over 40 degrees Fahrenheit (4 degrees Celsius). The city averages 4 days this month when the thermometer reaches into the 70s °F (over 20 °C). Usually for the first time in the year, one of those days gets as hot as 80 °F (27 °C).

At night, the thermometer dips to 32 °F (0 °C) or below on 2 days. April doesn't normally get as cold as 20 °F (-8 °C).

Rainy Weather iconPrecipitation

3.6 in total precipitation 92 mm
12 days of rain or snowfall

Half the time, Boston receives 2.3 to 4.6 inches (58 to 116 mm) of precipitation in April. One in four years has drier weather, while another one in four is wetter.

Snowy Weather iconSnow

1.6 in total snowfall 4 cm
1 day with new snow

Most years, Boston receives no fresh snow in April. But once every four years, at least an inch (2.5 cm) of snow lands on the city during the month.

Sunny Weather iconSun

56 % sunshine
7 days clear skies

The sun's rays reach the ground in Boston during 56 percent of daylight hours on average in April, for a total of 225 hours in the month. Typically on 7 days this month the sky is mainly clear, with at most 30 percent cloud cover.

Sunlight in April at Boston lasts for 13 hours and 24 minutes a day on average. The shortest day of the month is the 1st with 12 hours and 45 minutes of daylight. By the end of the month, the days have lengthened to 14:03 from sunrise to sunset. These durations of daylight can vary by a minute or two from year to year.

Humid Weather iconHumidity

63 % April average humidity

The relative humidity in Boston during April usually peaks at 71 percent in the morning then drops to 55 percent by early afternoon.

Local Time1 am4 am7 am10 am1 pm4 pm7 pm10 pm
Humidity % 69 71 68 58 55 56 61 66

Windy Weather iconWind

13.0 mph April wind speed average 20.9 kph

April is a less windy than winter months in Boston.

Stormy Weather iconStorms

2 days rainfall of 0.5 inches (13 mm) or more
1 day with thunderstorms in April

Boston averages one day this month when it rains at least an inch (25 mm). The city gets a major April snowstorm once a decade on average.


The weather data here are long-term averages provided by the US National Centers for Environmental Information (NCEI). Temperature and precipitation are 1991-2020 normals while humidity and thunderstorms are 1961-1990 normals.

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