Weather - Boston
Boston has a true four-season climate: cold, sometimes snowy winters; a fresh, changeable spring; warm, humid summers; and crisp, colorful autumns. Use this month-by-month guide to plan flights, sightseeing and packing on Flightics — from winter museums to summer harbor walks. The numbers are summarized below, but the short advice will help you pick the best time to travel.
Weather - Boston - January
January is the coldest month: daytime highs hover around 3 °C and nights drop to about −4 °C. Expect frequent cloudy days, regular snowfall and brisk winds — ideal for winter sports, cozy indoor attractions and lower off-peak fares. Pack a warm coat, hat and layers if you travel now.
Weather - Boston - February
February is still wintry with average highs near 4 °C and lows around −3 °C. Snow and overcast days remain common, though daylight slowly increases, making it a good time for museum visits and bargain flights before spring crowds arrive.
Weather - Boston - March
March brings transition weather: averages climb to roughly 7 °C by day and 0 °C at night, but rain and late snowstorms are possible. It's a mix of wet, chilly days and occasional mild spells — pack a warm waterproof jacket and expect variable conditions.
Weather - Boston - April
April feels like true spring with daytime temperatures near 13 °C and nights around 5 °C. Showers are fairly common, but longer daylight and budding parks make it a pleasant time for city walks and early-season sightseeing — great for avoiding peak-summer crowds.
Weather - Boston - May
May is mild and comfortable: highs around 18 °C and lows near 10 °C. Expect mostly pleasant weather with occasional rain; this is a lovely month for outdoor activities, harbor views and finding good flight deals in shoulder season.
Weather - Boston - June
June is reliably warm, with daytime temperatures averaging about 23 °C and nights around 16 °C. Days are long and sunnier, ideal for sightseeing, walking the Freedom Trail and enjoying patios. Summers can be humid, so pack light layers and a rain jacket for occasional showers.
Weather - Boston - July
July is the warmest month: average highs near 26 °C and lows around 19 °C. This is prime season for outdoor festivals and harbor activities. Expect warmth and some humidity — sunscreen and breathable clothing are recommended.
Weather - Boston - August
August remains hot and summery with similar averages to July (highs around 26 °C, lows near 19 °C). It's a popular month for visitors; plan ahead for accommodations and enjoy late-summer events and coastal strolls.
Weather - Boston - September
September cools down to comfortable highs around 22 °C and lows about 15 °C. It’s an excellent month for travel: pleasant weather, fewer tourists and the beginning of foliage changes later in the month — perfect for sightseeing and outdoor dining.
Weather - Boston - October
October brings classic New England fall — crisp air with daytime highs near 16 °C and nights around 9 °C. Expect increased rainfall at times, but vivid autumn colors and mild days make it one of the best months for scenic drives and city strolls.
Weather - Boston - November
November cools further (about 11 °C by day and 4 °C at night) and becomes more overcast. It's a shoulder-season month for lower fares and indoor attractions; pack layers and a warm jacket as temperatures can dip quickly.
Weather - Boston - December
December is chilly and often wet or snowy with daytime highs around 6 °C and nights close to −1 °C. Holiday lights and seasonal events make the city atmospheric, but bring winter footwear and a coat for potentially icy streets.
Table of average min/max temperatures through the year
| Month | Average max temperature | Average min temperature |
|---|---|---|
Jan |
3 °C | -4 °C |
Feb |
4 °C | -3 °C |
Mar |
7 °C | 0 °C |
Apr |
13 °C | 5 °C |
May |
18 °C | 10 °C |
Jun |
23 °C | 16 °C |
Jul |
26 °C | 19 °C |
Aug |
26 °C | 19 °C |
Sep |
22 °C | 15 °C |
Oct |
16 °C | 9 °C |
Nov |
11 °C | 4 °C |
Dec |
6 °C | -1 °C |
