Temperature range
Typical highs and lows
High27.8°C
Low-6.8°C
The broad yearly range between warm daytime highs and the coolest overnight lows.
United States Boston, United States
Boston experiences a temperate climate, where average temperatures vary from a low of 2°C / 35°F in January to a high of 28°C / 82°F in July.
Annual rainfall patterns show an average of 96 mm / 3.8 inches per month, with March being the wettest (115 mm / 4.5 inches) and July the driest (83 mm / 3.3 inches).
Sun intensity varies throughout the year, with UV levels reaching 8 in June and falling to 2 in December; strong sun protection is essential during summer months.
The longest days occur in June with around 15.2 hours of daylight, while December has the shortest days at about 9.1 hours.
Trip planning
Plan your trip
Find the best dates. Understand the conditions. Pack with confidence.
Climate overview
Climate at a glance
The big-picture stats that matter for planning your visit to Boston.
Rain pattern
Wettest point of the year
115 mm
March carries the highest typical rainfall load.
Sun exposure
Typical peak UV band
Moderate (5.8)
A fast read on how strong midday sun typically gets across the year.
Daylight window
Seasonal daylight range
9 hrsto15 hrs
Useful for gauging how much sightseeing time you get in shorter versus longer seasons.
Wind profile
Typical breeze strength
14 km/h
January is typically the breeziest month.
Humidity
Typical moisture range
68 %to75 %
A quick signal for how dry, comfortable, or heavy the air tends to feel.
When should I go?
Our top-rated months for visiting Boston, based on long-term weather comfort and conditions
Typical weather by month
Compare all monthsTip: click on a card to see detailed daily weather averages for that month.
How Boston compares
See how it ranks against the rest of United States for key metrics.
HOTTEST (AVG)
in United States
#17 / 20
COOLEST (AVG)
in United States
#3 / 20
WETTEST (TOTAL)
in United States
#9 / 20
WINDIEST (AVG)
in United States
#6 / 20
HIGHEST UV
in United States
#17 / 20
MOST HUMID
in United States
#12 / 20
Short term outlook
Visiting soon? Here's the next 7 days of weather for Boston, or see an hourly breakdown for the next 14 days.
Travel planning FAQ
Frequently asked questions
Quick answers to the weather questions you ask the most.
How does the weather in Boston feel over the year?
On a typical year, you can expect highs around 15°C (59°F) and lows near 6°C (43°F). Conditions usually feel cool in the daytime and cold once the sun goes down. Expect a mix of sun and cloud across the year.
When is the best time to visit Boston for dry weather?
When is sun exposure strongest in Boston?
UV tends to peak in June, when UV levels frequently reach very high levels (around 8), so strong sun protection is essential, especially around midday.
Does it snow in Boston?
Yes. Snowfall is possible, and it peaks in February, when averages reach around 0.9 cm. Winters are when you're most likely to see snow on the ground.
Is Boston a windy place?
Across the year, average winds sit around 14 km/h (9 mph), with gusts on windier days up to about 65 km/h (40 mph). Overall it is it is a notably windy place, and strong gusts are fairly common.
How much daylight does Boston get?
On average, days offer about 12 hours of daylight. Daylight is fairly typical, with enough time for sightseeing.