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Boston

Weather in Boston by month: what to expect

Photo: Jiaqian AirplaneFan, CC BY 3.0

Weather overview

Бостон experiences four distinct seasons, each offering a different atmosphere for visitors. Winters in Бостон are cold, with temperatures often dropping below freezing, while summers bring warmth and longer days. Spring and autumn provide mild and pleasant conditions, making them popular times to explore the city.

From December to February, Бостон is wrapped in winter chill, with occasional snowfall adding to the city’s charm. By March, temperatures begin to rise, and by May, the city blooms with greenery. The summer months of June to August are the warmest, while September and October bring crisp air and vibrant foliage.

Temperature

Winter in Бостон can be quite cold, with average temperatures hovering around 0.2 °C in January and dropping to -3.4 °C at night. By March, the city starts to thaw, with daytime highs reaching 8.8 °C. The warmth of summer arrives in June, when temperatures climb to 20.5 °C on average and peak at 28.5 °C in July.

Autumn in Бостон is mild, with September still feeling summer-like at 19.5 °C, while October cools to 14 °C. By November, temperatures drop to 7.5 °C, signaling the approach of winter. The water temperature follows a similar pattern, warming to 19.6 °C in August and cooling to 3.9 °C by January.

Average air temperature °C
Average air temperature
Month Minimum Maximum
January -3.4 3.9
February -2.8 5.7
March 0.5 8.8
April 5.3 13.7
May 10.7 19.6
June 16 25.2
July 19.9 28.5
August 19.5 27.9
September 15.7 23.5
October 10.1 18
November 3.4 11.6
December -1 6.1

Precipitation

Бостон receives rainfall throughout the year, with no truly dry season. The wettest months are March and July, with over 100 mm of precipitation each. Winter months like December and January also see significant rainfall, though snow is common in colder periods.

Spring and early summer in Бостон are relatively wet, with April and May bringing around 104 mm and 76 mm of rain, respectively. Autumn remains damp, with October and November averaging 97.6 mm and 86.6 mm. Even in the driest months, like February, Бостон still sees nearly 80 mm of precipitation.

Precipitation amount mm
Precipitation amount
Month Precipitation
January 93.5
February 78.2
March 104.6
April 104.3
May 76.3
June 82.8
July 111.6
August 91.4
September 80.6
October 97.6
November 86.6
December 107.7

What to pack

For a winter trip to Бостон, pack warm layers, a heavy coat, gloves, and a hat to stay comfortable in temperatures near 0 °C or below. Waterproof shoes are useful for slushy streets in January and February. In spring, lighter layers work well, but a jacket is still needed for cooler evenings in March and April.

Summer in Бостон calls for light, breathable clothing, as temperatures often reach 25–28 °C. Don’t forget sunscreen and a hat for sunny days in July and August. For autumn, layers are key—mornings in September can be warm, while evenings in November turn chilly. A light rain jacket is handy year-round, especially in March or October.

Average monthly wind m/s
Average monthly wind
Month Wind speed
January 5.4
February 5.2
March 5.8
April 5.4
May 4.8
June 4.5
July 4.3
August 4.2
September 4.4
October 4.7
November 5
December 5.1