Weather
Weather in Boston by month
The best time to visit is May–September, with average highs of 19–28°C and moderate rain. July is the warmest month (about 28°C by day) and January the coolest (-8°C at night); October is the wettest (around 123 mm of rain) and January the driest. Nights fall below freezing in December–March.
Boston weather by month
| Month | Jan | Feb | Mar | Apr | May★ | Jun★ | Jul★ | Aug★ | Sept★ | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| High / Low (°C) | 0° -8° | 2° -7° | 6° -3° | 13° 2° | 19° 8° | 24° 14° | 28° 17° | 27° 17° | 24° 13° | 16° 7° | 10° 1° | 4° -4° |
| Rain (mm) | 80 | 86 | 110 | 107 | 95 | 113 | 94 | 93 | 92 | 123 | 98 | 116 |
Average daily high and low (°C) and monthly rainfall (mm) · Forecast: MET Norway (yr.no) · Climate averages: NASA POWER
Boston month by month
January
0°/ -8°Cold
80 mm · some rainPack: Warm coat, hat and gloves · umbrella
Good trips this month
Cold and some rain: around 0°C by day and -8°C at night, with about 80 mm of rain.
February
2°/ -7°Cold
86 mm · some rainPack: Warm coat, hat and gloves · umbrella
Good trips this month
Cold and some rain: around 2°C by day and -7°C at night, with about 86 mm of rain.
March
6°/ -3°Chilly
110 mm · some rainPack: Winter coat and warm layers · umbrella
Good trips this month
Chilly and some rain: around 6°C by day and -3°C at night, with about 110 mm of rain.
April
13°/ 2°Cool
107 mm · some rainPack: Jacket and a sweater · umbrella
Good trips this month
Cool and some rain: around 13°C by day and 2°C at night, with about 107 mm of rain.
- ★ Best time
May
19°/ 8°Mild
95 mm · some rainPack: Light layers and a light jacket · umbrella
Good trips this month
Mild and some rain: around 19°C by day and 8°C at night, with about 95 mm of rain.
- ★ Best time
June
24°/ 14°Warm
113 mm · some rainPack: T-shirts, plus a layer for evenings · umbrella
Good trips this month
Warm and some rain: around 24°C by day and 14°C at night, with about 113 mm of rain.
- ★ Best time
July
28°/ 17°Warm
94 mm · some rainPack: T-shirts, plus a layer for evenings · umbrella
Good trips this month
Warm and some rain: around 28°C by day and 17°C at night, with about 94 mm of rain.
- ★ Best time
August
27°/ 17°Warm
93 mm · some rainPack: T-shirts, plus a layer for evenings · umbrella
Good trips this month
Warm and some rain: around 27°C by day and 17°C at night, with about 93 mm of rain.
- ★ Best time
September
24°/ 13°Warm
92 mm · some rainPack: T-shirts, plus a layer for evenings · umbrella
Good trips this month
Warm and some rain: around 24°C by day and 13°C at night, with about 92 mm of rain.
- This month
October
16°/ 7°Cool
123 mm · some rainPack: Jacket and a sweater · umbrella
Good trips this month
Cool and some rain: around 16°C by day and 7°C at night, with about 123 mm of rain.
November
10°/ 1°Chilly
98 mm · some rainPack: Winter coat and warm layers · umbrella
Good trips this month
Chilly and some rain: around 10°C by day and 1°C at night, with about 98 mm of rain.
December
4°/ -4°Cold
116 mm · some rainPack: Warm coat, hat and gloves · umbrella
Good trips this month
Cold and some rain: around 4°C by day and -4°C at night, with about 116 mm of rain.
Weather questions about Boston
Quick answers
When is the best time to visit Boston?
What's the weather like in Boston in October?
Cool and some rain: around 16°C by day and 7°C at night, with about 123 mm of rain. Pack: Jacket and a sweater, umbrella.
When is the best time for sightseeing in Boston?
May–June and September–October: that's when the weather suits it best — warm enough and mostly dry.
When is the best time for hiking in Boston?
May–June and September–October: that's when the weather suits it best — warm enough and mostly dry.
What is the warmest month in Boston?
July: average highs of about 28°C and lows of 17°C.
Which month has the most rain in Boston?
Average daily high and low (°C) and monthly rainfall (mm) · Forecast: MET Norway (yr.no) · Climate averages: NASA POWER · Boston Activities