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Cambridge, MA Weather by Month and Climate Averages
Monthly normals · Rain · Snow
Sunshine · Freeze dates · Records · Best time to visit
What is the weather like in Cambridge, MA?
Cambridge, MA gets 43.6 in of precipitation a year over about 128 rainy days, and about 49.2 in of snow a season. July is the warmest month (average high 82°F) and January the coldest (average low 23°F).
Humid continental climate
Cambridge, MA has warm summers and cold winters. Daytime highs range from about 37°F in January to 82°F in July. December is usually the wettest month, and snow falls in winter. The most comfortable time to visit is typically May to June and September to October, when daytime highs sit near 70°F.
| Season | Months | Avg low | Avg high |
|---|---|---|---|
| Winter | Dec–Feb | 26° | 40° |
| Spring | Mar–May | 41° | 56° |
| Summer | Jun–Aug | 64° | 80° |
| Autumn | Sep–Nov | 48° | 63° |
How much rain does Cambridge get?
Cambridge gets 43.6 in of precipitation in an average year, spread over about 128 days with measurable rain. That is more rainy days than 84% of the US.
December is the wettest month, with 4.3 in. February is the driest, with 3.2 in. December has the most rainy days, about 12.
The longest dry spell in the last five years lasted 29 days, to September 18, 2024.
From September 2025 to August 2026 Cambridge got 37.1 in of rain, against a normal of 43.6 in for those months. July 2026 had the most, with 5.2 in.
See where Cambridge ranks: rainiest cities in the US, US cities with the most rainy days, rainiest cities in Massachusetts.
Does it snow in Cambridge?
Yes. Cambridge gets about 49.2 in of snow in an average season, measured at the reporting station.
The snowiest winter on record is 2014–15, with 110.6 in.
The most recent measurable snow at the station fell on March 24, 2026.
From September 2025 to August 2026 the station measured 62.8 in of snow, against a normal of 49.2 in for those months. January 2026 had the most, with 29.8 in.
See where Cambridge ranks: snowiest cities in the US.
Cambridge weather by month
Cambridge weather in January
In January, Cambridge averages a high of 37°F and a low of 23°F. It gets 3.4 in of precipitation over about 12 rainy days. Estimated sunshine is 39% of daylight hours, derived from ERA5 cloud cover. The January record high is 74°F (2020) and the record low is -7°F (2004).
Cambridge weather in February
In February, Cambridge averages a high of 39°F and a low of 25°F. It gets 3.2 in of precipitation over about 11 rainy days. Estimated sunshine is 43% of daylight hours, derived from ERA5 cloud cover. The February record high is 73°F (2017) and the record low is -10°F (2023).
Cambridge weather in March
In March, Cambridge averages a high of 46°F and a low of 31°F. It gets 4.2 in of precipitation over about 12 rainy days. Estimated sunshine is 42% of daylight hours, derived from ERA5 cloud cover. The March record high is 89°F (1998) and the record low is 5°F (2007).
Cambridge weather in April
In April, Cambridge averages a high of 57°F and a low of 41°F. It gets 3.6 in of precipitation over about 12 rainy days. Estimated sunshine is 38% of daylight hours, derived from ERA5 cloud cover. The April record high is 94°F (1976) and the record low is 16°F (1982).
Cambridge weather in May
In May, Cambridge averages a high of 66°F and a low of 50°F. It gets 3.3 in of precipitation over about 12 rainy days. Estimated sunshine is 42% of daylight hours, derived from ERA5 cloud cover. The May record high is 96°F (2026) and the record low is 34°F (2020). May is one of the most comfortable months to visit.
Cambridge weather in June
In June, Cambridge averages a high of 76°F and a low of 60°F. It gets 3.9 in of precipitation over about 11 rainy days. Estimated sunshine is 41% of daylight hours, derived from ERA5 cloud cover. The June record high is 102°F (2025) and the record low is 45°F (1986). June is one of the most comfortable months to visit.
Cambridge weather in July
In July, Cambridge averages a high of 82°F and a low of 66°F. It gets 3.3 in of precipitation over about 9 rainy days. Estimated sunshine is 40% of daylight hours, derived from ERA5 cloud cover. The July record high is 103°F (2011) and the record low is 50°F (1988).
Cambridge weather in August
In August, Cambridge averages a high of 80°F and a low of 65°F. It gets 3.2 in of precipitation over about 9 rainy days. Estimated sunshine is 42% of daylight hours, derived from ERA5 cloud cover. The August record high is 102°F (1975) and the record low is 47°F (1986).
Cambridge weather in September
In September, Cambridge averages a high of 73°F and a low of 58°F. It gets 3.6 in of precipitation over about 9 rainy days. Estimated sunshine is 47% of daylight hours, derived from ERA5 cloud cover. The September record high is 99°F (1983) and the record low is 38°F (2000). September is one of the most comfortable months to visit.
Cambridge weather in October
In October, Cambridge averages a high of 62°F and a low of 48°F. It gets 4.0 in of precipitation over about 11 rainy days. Estimated sunshine is 48% of daylight hours, derived from ERA5 cloud cover. The October record high is 87°F (2011) and the record low is 28°F (1976). October is one of the most comfortable months to visit.
Cambridge weather in November
In November, Cambridge averages a high of 52°F and a low of 38°F. It gets 3.7 in of precipitation over about 10 rainy days. Estimated sunshine is 58% of daylight hours, derived from ERA5 cloud cover. The November record high is 82°F (2024) and the record low is 14°F (2018).
Cambridge weather in December
In December, Cambridge averages a high of 43°F and a low of 29°F. It gets 4.3 in of precipitation over about 12 rainy days. Estimated sunshine is 43% of daylight hours, derived from ERA5 cloud cover. The December record high is 76°F (1998) and the record low is -7°F (1980).
Sunshine, humidity and wind in Cambridge
November is the sunniest month in Cambridge, with estimated sunshine of 58% of daylight hours from ERA5 cloud cover. April is the cloudiest, at 38%. The annual cloud-cover estimate is 44% of daylight hours; it is not a measurement of sunshine duration. Cambridge is cloudier than 70% of the US.
Humidity peaks in July at 74% and is lowest in March at 60%.
Wind averages 11 mph over the year, and March is the windiest month at 13 mph.
Cambridge has about 14 days a year above 90°F. Cambridge is cooler than 70% of the US.
Thunderstorms occur on about 17 days a year.
See where Cambridge ranks: sunniest cities in the US, cloudiest cities in the US, hottest cities in the US.
First and last freeze in Cambridge
The first fall freeze in Cambridge typically comes around November 9, and the last spring freeze around April 6. That leaves a frost-free growing season of about 217 days.
Cambridge weather records
These records cover BOSTON during 1970–2026. Earlier records or other stations in the city may differ.
The hottest temperature on record at the Cambridge station is 103°F, on July 22, 2011. The coldest is -10°F, on February 4, 2023.
The wettest day in the available station history brought 6.1 in of precipitation, on October 20, 1996.
39 all-time records have been set at the station since 1970.
The annual mean temperature has changed by +0.4°F per decade since 1970.
The best time to visit Cambridge
The most comfortable time to visit is typically May to June and September to October, when daytime highs sit near 70°F.
Winter (December–February) is cold, with average highs around 40°F and lows near 26°F. Snow is possible.
Spring (March–May) is mild, with average highs around 56°F and lows near 41°F.
Summer (June–August) is warm, with average highs around 80°F and lows near 64°F. It can feel humid.
Autumn (September–November) is mild, with average highs around 63°F and lows near 48°F.
Monthly climate
| Month | Average low | Average high | Precip | Rain days | Wind | Humidity | Estimated sunshine | Record high | Record low |
|---|---|---|---|---|---|---|---|---|---|
| January | 23° | 37° | 3.4 in | 12 | 12 mph | 66% | 39% | 74° | -7° |
| February | 25° | 39° | 3.2 in | 11 | 12 mph | 63% | 43% | 73° | -10° |
| March | 31° | 46° | 4.2 in | 12 | 13 mph | 60% | 42% | 89° | 5° |
| April | 41° | 57° | 3.6 in | 12 | 12 mph | 62% | 38% | 94° | 16° |
| May | 50° | 66° | 3.3 in | 12 | 11 mph | 64% | 42% | 96° | 34° |
| June | 60° | 76° | 3.9 in | 11 | 10 mph | 72% | 41% | 102° | 45° |
| July | 66° | 82° | 3.3 in | 9 | 10 mph | 74% | 40% | 103° | 50° |
| August | 65° | 80° | 3.2 in | 9 | 10 mph | 74% | 42% | 102° | 47° |
| September | 58° | 73° | 3.6 in | 9 | 10 mph | 74% | 47% | 99° | 38° |
| October | 48° | 62° | 4.0 in | 11 | 11 mph | 73% | 48% | 87° | 28° |
| November | 38° | 52° | 3.7 in | 10 | 11 mph | 64% | 58% | 82° | 14° |
| December | 29° | 43° | 4.3 in | 12 | 12 mph | 68% | 43% | 76° | -7° |
Station: BOSTON, 8 km from the city. Temperature normal baseline: 1991–2020, calculated from available NOAA GHCN-Daily observations. Available station history: 1970–2026; record values refer to this station and period, not the entire city’s history. Precipitation includes rain and the water equivalent of frozen precipitation; snowfall depth is shown separately when available. Sources and methods
From ERA5 reanalysis. Sunshine is estimated from cloud cover.
Cambridge climate questions
How much rain does Cambridge get?
Cambridge gets 43.6 in of precipitation in an average year, over about 128 rainy days.
What is the wettest month in Cambridge?
December is the wettest month in Cambridge, with 4.3 in. February is the driest, with 3.2 in.
How many rainy days does Cambridge have a year?
Cambridge has about 128 days with measurable rain in an average year. December has the most, about 12.
Does it snow in Cambridge?
Yes. Cambridge gets about 49.2 in of snow in an average season. The snowiest winter on record is 2014–15, with 110.6 in.
What is the hottest month in Cambridge?
July is the warmest month in Cambridge, with an average high of 82°F.
What is the coldest month in Cambridge?
January is the coldest month in Cambridge, with an average low of 23°F.
What is the record high temperature in Cambridge?
Within the available 1970–2026 station history, the record high at the Cambridge station is 103°F, set on July 22, 2011. The record low is -10°F, on February 4, 2023.
What is the sunniest month in Cambridge?
November is the sunniest month in Cambridge, with estimated sunshine of 58% of daylight hours from ERA5 cloud cover. April is the cloudiest.
When is the first frost in Cambridge?
The first fall freeze in Cambridge typically comes around November 9. The last spring freeze is around April 6.
What is the best time to visit Cambridge?
The most comfortable time to visit is typically May to June and September to October, when daytime highs sit near 70°F.