What is the hottest month in Brockton?

July is the warmest month in Brockton, with an average high of 84.2°F.

What is the coldest month in Brockton?

January is the coldest month in Brockton, with an average low of 20.6°F.

What month does Brockton get the most rain?

March is typically the wettest month in Brockton, with about 5.23 inches of precipitation.

What plant hardiness zone is Brockton in?

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

Has the climate in Brockton changed recently?

22.7% of Brockton'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.

Brockton, MA

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

Dfa Hot-summer humid continental climate 7b USDA hardiness Zone 7b

Year-round temperatures (°F)

Avg high Avg low

Climate summary

Brockton has an annual average temperature of 51.4°F with about 50.2 inches of precipitation per year and 34.3 inches of snow. The warmest month is July (average high 84.2°F), and the coldest is January (average low 20.6°F). March is typically the wettest month (5.23 in) and July the driest (3.17 in). Snow typically falls from November through April.

Pleasant months

2 / 12

avg high 65–80°F, low ≥ 50°F

Annual swing

44.2°F

warmest to coldest month

Heating need

5,448

HDD/yr

Cooling need

567

CDD/yr

Best time to visit Brockton

Full guide →

Climate change signal

All-time records →

83 of 366 (22.7%) of Brockton'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		16
1900s		12
1910s		19
1930s		42
1940s		43
1950s		14
1960s		12
1970s		19
1980s		21
1990s		44
2000s		25
2010s		32
2020s		67

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	38.7°F	20.6°F	29.6°F	4.02 in	9.1 in	11
February	40.8°F	22.0°F	31.4°F	3.62 in	12.8 in	11
March	48.0°F	28.7°F	38.3°F	5.23 in	6.9 in	12
April	59.0°F	38.0°F	48.5°F	4.53 in	0.7 in	12
May	69.7°F	47.4°F	58.5°F	3.44 in	—	13
June	78.3°F	57.1°F	67.7°F	4.13 in	—	11
July	84.2°F	63.4°F	73.8°F	3.17 in	—	10
August	82.9°F	62.0°F	72.4°F	3.60 in	—	9
September	75.3°F	54.2°F	64.8°F	4.08 in	—	9
October	64.0°F	43.0°F	53.5°F	4.96 in	0.1 in	11
November	53.5°F	34.2°F	43.8°F	4.39 in	0.2 in	11
December	43.7°F	26.4°F	35.0°F	5.06 in	4.5 in	12