What is the hottest month in Barnstable Town?

July is the warmest month in Barnstable Town, with an average high of 78.1°F.

What is the coldest month in Barnstable Town?

January is the coldest month in Barnstable Town, with an average low of 22.3°F.

What month does Barnstable Town get the most rain?

March is typically the wettest month in Barnstable Town, with about 4.77 inches of precipitation.

What plant hardiness zone is Barnstable Town in?

Barnstable Town is approximately in USDA plant hardiness Zone 7b, based on the average annual extreme minimum temperature.

Has the climate in Barnstable Town changed recently?

15% of Barnstable Town's all-time daily heat records were set in the last decade (since 2015), compared to roughly 5% if records were evenly distributed over time.

Barnstable Town, MA

Climate overview — based on NOAA 1991-2020 normals from HYANNIS, MA US.

Dfb Warm-summer humid continental climate 7b USDA hardiness Zone 7b

Year-round temperatures (°F)

Avg high Avg low

Climate summary

Barnstable Town has an annual average temperature of 50.3°F with about 45.7 inches of precipitation per year and 21.5 inches of snow. The warmest month is July (average high 78.1°F), and the coldest is January (average low 22.3°F). March is typically the wettest month (4.77 in) and July the driest (2.77 in). Snow typically falls from December through March.

Pleasant months

4 / 12

avg high 65–80°F, low ≥ 50°F

Annual swing

40.6°F

warmest to coldest month

Heating need

5,628

HDD/yr

Cooling need

336

CDD/yr

Best time to visit Barnstable Town

Full guide →

Climate change signal

All-time records →

55 of 366 (15%) of Barnstable Town's all-time daily heat records have been set since 2015. If records were spread evenly across the station's history, only about 5% would fall in any given decade.

1890s		26
1900s		10
1910s		7
1920s		0
1930s		16
1940s		37
1950s		47
1960s		24
1970s		32
1980s		29
1990s		23
2000s		34
2010s		40
2020s		41

Bars: number of all-time daily heat records still standing that were set in each decade.

Monthly averages

Month	Avg High	Avg Low	Avg Temp	Precipitation	Snow	Rainy days
January	38.8°F	22.3°F	30.5°F	3.71 in	9.5 in	10
February	39.7°F	23.5°F	31.6°F	3.56 in	6.3 in	10
March	44.2°F	29.6°F	36.9°F	4.77 in	3.6 in	10
April	53.5°F	38.3°F	45.9°F	4.00 in	—	11
May	62.7°F	47.6°F	55.1°F	3.42 in	—	10
June	71.5°F	57.0°F	64.3°F	3.33 in	—	9
July	78.1°F	64.2°F	71.1°F	2.77 in	—	7
August	77.0°F	63.2°F	70.1°F	3.24 in	—	8
September	71.1°F	56.5°F	63.8°F	3.83 in	—	8
October	61.2°F	45.9°F	53.6°F	4.29 in	—	10
November	52.1°F	36.9°F	44.5°F	4.07 in	—	10
December	43.8°F	28.6°F	36.2°F	4.68 in	2.1 in	12