Updated October 2026
Boston National Historical Park Weather by Month
Boston National Historical Park is warmest in July, when the nearest NOAA climate station averages a high of 82°F and a low of 66°F, and coldest in January, with an average high of 37°F and an average low of 23°F. December is the wettest month, with about 4.3 inches of precipitation. Snowfall is heaviest in February, at about 14 inches.
These figures are NOAA's 1991–2020 climate normals, the 30-year average for each calendar month, from the nearest long-record weather station, 2.4 miles from the park's reference point. A single station cannot describe a whole park: temperatures elsewhere in Boston National Historical Park can differ from these, particularly with elevation.
Warmest month
Jul
82°F avg high
Coldest month
Jan
23°F avg low
Wettest month
Dec
4.3 in avg
Snowiest month
Feb
14.4 in avg
Longest days
Jun
15.1 h of daylight
Average weather at Boston by month
| Month | Avg high | Avg low | Precipitation | Snowfall | Daylight |
|---|---|---|---|---|---|
| January | 37°F | 23°F | 3.4 in | 14.3 in | 9.2 h |
| February | 39°F | 25°F | 3.2 in | 14.4 in | 10.3 h |
| March | 46°F | 31°F | 4.2 in | 9.0 in | 11.7 h |
| April | 56°F | 41°F | 3.6 in | 1.6 in | 13.2 h |
| May | 67°F | 50°F | 3.3 in | 0.0 in | 14.4 h |
| June | 76°F | 60°F | 3.9 in | 0.0 in | 15.1 h |
| July | 82°F | 66°F | 3.3 in | 0.0 in | 14.8 h |
| August | 80°F | 65°F | 3.2 in | 0.0 in | 13.7 h |
| September | 73°F | 58°F | 3.6 in | 0.0 in | 12.3 h |
| October | 62°F | 48°F | 4.0 in | 0.2 in | 10.8 h |
| November | 52°F | 38°F | 3.7 in | 0.7 in | 9.5 h |
| December | 42°F | 29°F | 4.3 in | 9.0 in | 8.9 h |
| Year total | 43.7 in | 49.2 in |
NOAA 1991–2020 climate normals from station USW00014739, 2.4 miles from the park's reference point. Daylight is the monthly average, computed from the park's latitude. Each month links to how crowded Boston is at that time of year.
Boston weather by season
Winter: December to February
Average highs bottom out at 37°F in January, between 42°F in December and 39°F in February, with average lows between 23°F and 29°F. The average low is at or below freezing in all three months. Together the three months average 10.9 inches of precipitation, about 25% of the yearly total. Snowfall averages about 38 inches for the season. Daylight is at its shortest, about 8.9 hours in December.
Spring: March to May
Average highs climb from 46°F in March to 67°F in May, with average lows between 31°F and 50°F. The average low is at or below freezing in March. Together the three months average 11.1 inches of precipitation, about 25% of the yearly total. Snowfall averages about 11 inches for the season, most of it in March. Daylight lengthens from about 11.7 hours in March to 14.4 in May.
Summer: June to August
Average highs peak at 82°F in July, between 76°F in June and 80°F in August, with average lows between 60°F and 66°F. Together the three months average 10.4 inches of precipitation, about 24% of the yearly total and less than in any other season. Daylight is at its longest, about 15.1 hours in June.
Fall: September to November
Average highs fall from 73°F in September to 52°F in November, with average lows between 38°F and 58°F. Together the three months average 11.3 inches of precipitation, about 26% of the yearly total and more than in any other season. Snowfall averages about 0.9 inches for the season. Daylight shortens from about 12.3 hours in September to 9.5 in November.
What the National Park Service says about the weather
Temperatures range from warm, humid summer days to cold New England winter days. Wear comfortable sportswear in season, with comfortable walking shoes.
Weather description courtesy of the National Park Service — official park site.
Today's forecast for Boston
Averages describe a typical month, not this week. For current conditions and the seven-day outlook, the National Weather Service issues a forecast for the park's reference point at 42.37°N, 71.06°W. It covers that one spot, so other elevations in the park can differ from it, as they do from the averages above.
National Weather Service forecast for Boston National Historical Park →
Weather and crowds together
July is both the warmest month and the busiest, with about 1.9× the visitors of the park's average month. January is the quietest. To see those crowds set against the weather for all twelve months, read the best time to visit Boston National Historical Park. For hotels, cabins and rentals close to the park, see where to stay near Boston.
Where to stay near Boston
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Top-rated places to stay near Boston
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Frequently Asked Questions
July is the warmest month at Boston National Historical Park, with an average high of 82°F and an average low of 66°F. That is the 1991–2020 average at the nearest long-record NOAA station, 2.4 miles from the park's reference point. Temperatures inside the park can differ, particularly with elevation.
January is the coldest month at Boston National Historical Park, with an average low of 23°F and an average high of 37°F, based on NOAA 1991–2020 climate normals.
December is the wettest month, with about 4.3 inches of precipitation. February and August are the driest, at about 3.2 inches each. The station records about 43.7 inches of precipitation in an average year.
Yes. The nearest long-record NOAA station, 2.4 miles from the park's reference point, averages about 49 inches of snow a year. February is the snowiest month, at about 14 inches. The station averages at least a tenth of an inch of snow in 7 of the 12 months.
Weather at nearby parks
1 mi away · warmest in July (82°F)
4 mi away · warmest in July (85°F)
4 mi away · warmest in July (85°F)
5 mi away · warmest in July (85°F)
7 mi away · warmest in July (84°F)
8 mi away · warmest in July (83°F)
Keep exploring
Sources: NOAA NCEI U.S. Climate Normals 1991–2020 (station USW00014739), daylight computed from latitude, weather description from the National Park Service, crowd levels from National Park Service Visitor Use Statistics (1979–2025). Updated 2026-10-11. Lodging results are provided by Stay22; WhenToVisitParks may earn a commission from bookings, at no extra cost to you.