Boston Weather in March

Boston in March sees low temperatures, with highs around 8°C (46°F) and overnight lows of -1°C (30°F). Snow/rainfall is fairly high at around 114 mm (4.5 in) on average, so pack waterproofs just in case.

Rainfall in Boston in March

Based on our climate data of the past 30 years, about 11 days of snow/rain are anticipated, with 114 mm (4.5 in) on average. Individual showers can be quite heavy this month. A proper umbrella or rain jacket is worth having.

Temperature in Boston in March

Expect highs of 8°C (46°F) in Boston in March, with nights dropping to around -1°C (30°F). The days stay cool from start to finish. Layering up well will make outdoor time much more comfortable. At -1°C (30°F) overnight, frost and ice are likely outside. Indoors, consider packing an extra blanket if you're unsure about the heating.

Sunshine in Boston in March

The city usually sees around 212 hours of sunlight, indicating many sunny days despite the cool temperatures, making it a good month for sightseeing.

Wind Speed in Boston in March

Average wind conditions reach 7 m/s (14 knots) in March. This indicates a windy month with strong breezes dominating the weather pattern. Remember this is an average: while most days are notably windy, some calmer periods occur alongside more stormy conditions.

Average water temperature in March

At 4°C (39°F), the water is very cold. Most people find it too uncomfortable for anything beyond a brief wade.

March in Boston has its charm, but if you're looking for destinations with pleasant temperatures and sunny skies, our weather planner can help you explore other options in the world.

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For a detailed overview over the year and the best time to visit the United States of America, check out our Boston's climate page.

Boston Temperature in March

Min Temperature -1°C (30°F)  

Max Temperature 8°C (46°F)  

Water Temperature 4°C (39°F)  

Chance of Rain 35%  

Precipitation 114 mm (4.5 in)  

Rainy days 11 days  

Humidity 63%  

Windspeed 7 m/s (14 knots)  

Sunshine 212 hours  

Percentage Sunshine 58%  

Daily Historical Temperatures

50-year average (1976-2025)

Based on our historical records, temperatures in Boston typically rise from around 5°C (41°F) at the start of March to approximately 11°C (52°F) by the end. Nights are cold, with lows typically ranging from -3°C (27°F) to 4°C (39°F).

Average temperatures in March

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Daily Historical Precipitation

50-year average (1976-2025)

Average daily rainfall for each day of the month based on long-term records.

Average precipitation in March

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Historical weather for Boston in March

Browse day-by-day weather records for Boston spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.

Historical weather Temperatures Precipitation

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Boston historical weather extremes in March

Based on 50 years of weather observations in Boston between 1976 and 2026, these are the recorded extremes.

• Boston experienced its chilliest March day on March 4, 2017, reaching only -6°C (21°F).
• Boston registered its coldest March night on March 9, 2007, with temperatures dropping to -15°C (5°F).

What to Wear in Boston in March

We recommend to layer up for chilly conditions in Boston in March. You could start with thermal underwear or a good base layer to keep your core warm on the cooler days this month. Maybe also add a sweater or fleece, and top it off with a windproof jacket. High rain levels are expected, so pack waterproof gear and an umbrella or poncho. Expect water temperatures of around 4°C (39°F), which is definitely too cold for comfortable swimming. Your luggage space is better used for other items. And with plenty of sunshine hours, don’t forget sunglasses, sunscreen, and maybe a sun hat.

What To Do in Boston in March

We rated the following activities from 1 (least suitable) to 10 (best) to do.

Swimming

4/10

Cycling

4/10

Walking

4/10

Camping

1/10

Outdoor sports

4/10

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit the United States of America, check out our Boston's climate page.

More climate data for Boston

Temperature Rainfall Sunshine Humidity Wind Speed Water Temp

See the full Boston climate overview or explore weather in the United States of America.