Weather & Climate in Brockton, MA

Temperature, precipitation, air quality, natural hazards, and monthly weather data.

Brockton experiences four distinct seasons with an average annual temperature of 53°F (11°C). Winters average 37°F in January while summers reach 74°F in July. The area gets 259 sunny days per year, above the national average. Annual precipitation totals 54.8 inches (wetter than the 38-inch national average). The area receives 24.2 inches of snow annually, a moderate snowfall amount. Air quality is rated Good with a median AQI of 37. The city sits at an elevation of 135 feet.

Temperature

37°F Jan (3°C) 74°F Jul (24°C)

Annual Average	52.6°F
	3% below US avg
January Average	37°F (3°C)
July Average	74°F (24°C)
Sunny Days	259 days/yr

Geography

Elevation	135 ft (41 m)
Area	21.3 sq mi (55.2 km²)
Population Density	4,926/sq mi
Coordinates	42.0825°N, 71.0246°W
Timezone	America/New_York
County	Norfolk County County
Nearest Airport	General Edward Lawrence Logan International (BOS) 19 miles away

Precipitation & Snow

Annual Rainfall 54.8"

44% above US avg

Snowfall 24.2"

Wettest Month (Nov) 4.49"

Driest Month (Jun) 3.50"

Air Quality

AQI Median	37.0
Rating	Good

Natural Hazard Risk

Overall Risk	Relatively Moderate
Risk Score	92.0 / 100
Social Vulnerability	12.8 / 100
Community Resilience	93.0 / 100

Hazard Breakdown

Tornado	Relatively Moderate
Hurricane	Relatively Moderate
Earthquake	Relatively Moderate
Wildfire	Very Low
Flood	Relatively High
Hail	Very Low
Strong Wind	Relatively Moderate
Heat Wave	Relatively Moderate
Winter Weather	Relatively Low
Lightning	Relatively High
Ice Storm	Relatively High
Drought	Relatively Low
Cold Wave	Relatively Moderate
Landslide	Relatively Low
Coastal Flood	Relatively High

Source: FEMA National Risk Index v1.20 (Dec 2025)

Earthquake History

29 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M3.8.

Jan 27, 2025	9 km SE of York Harbor, Maine	M3.8	116 km	11 km
Oct 2, 1994	6 km W of Hardwick, Massachusetts	M3.7	107 km	10 km
Oct 6, 1992	1 km SW of Canterbury, New Hampshire	M3.4	145 km	5 km
Jan 12, 2015	0 km NE of Wauregan, Connecticut	M3.3	82 km	5 km
Jun 16, 2000	5 km NE of Granville, Massachusetts	M3.3	148 km	10 km
Oct 2, 1994	1 km NW of Hardwick, Massachusetts	M3.3	103 km	10 km
Sep 26, 2010	2 km SW of Canterbury, New Hampshire	M3.2	146 km	5 km
Mar 22, 1996	2 km NE of Bristol, Rhode Island	M3.1	47 km	12 km
Jan 10, 1999	2 km ENE of Merrimac, Massachusetts	M3.1	84 km	2 km
Jan 27, 2000	3 km WNW of Fremont, New Hampshire	M3.0	103 km	1 km
Jan 10, 1999	1 km NNE of Merrimac, Massachusetts	M3.0	84 km	2 km
Mar 12, 2002	52 km E of Chatham, Massachusetts	M3.0	150 km	1 km
Jul 22, 2003	72 km NNE of Provincetown, Massachusetts	M3.0	122 km	10 km
Jun 7, 2010	29 km SE of York Beach, Maine	M2.9	120 km	10 km
Jan 8, 1998	52 km ENE of Rockport, Massachusetts	M2.9	118 km	25 km
Mar 9, 2008	25 km SE of York Beach, Maine	M2.8	118 km	0 km
Sep 28, 2002	2 km N of Wilton, New Hampshire	M2.8	105 km	5 km
Mar 21, 2016	4 km ESE of Warner, New Hampshire	M2.8	145 km	7 km
Oct 13, 1999	2 km E of Littleton Common, Massachusetts	M2.7	62 km	2 km
Oct 11, 1990	5 km NNE of The Pinehills, Massachusetts	M2.7	41 km	13 km

Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.

Hurricane History

5 hurricanes (Category 1+) recorded within 500 km since 1980. Strongest on record: Category 2.

Year	Name	Category	Max Wind	Closest
2021	Henri	Category 1	75 mph	298 km
2014	Arthur	Category 1	75 mph	237 km
1996	Edouard	Category 1	81 mph	275 km
1991	Bob	Category 2	104 mph	72 km
1985	Gloria	Category 1	86 mph	148 km

Source: NOAA IBTrACS (Category 1+, 1980–2026).

Tornado History

154 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF3. Total: 5 fatalities, 99 injuries.

Date	Rating	Distance	Path	Fatalities
Jun 22, 1981	EF3	95 km	7.1 mi	0
Sep 29, 1974	EF3	60 km	0.1 mi	0
Oct 3, 1970	EF3	98 km	35.4 mi	1
Jun 9, 1953	EF3	62 km	28.0 mi	0
Jun 9, 1953	EF3	99 km	1.5 mi	0
Aug 18, 2023	EF2	55 km	9.1 mi	0
Jul 28, 2014	EF2	35 km	1.9 mi	0
May 21, 2006	EF2	94 km	0.1 mi	0
Aug 7, 1986	EF2	50 km	4.0 mi	0
Aug 10, 1979	EF2	95 km	9.7 mi	2
Jul 21, 1972	EF2	74 km	7.6 mi	0
Aug 28, 1970	EF2	55 km	1.0 mi	0
Nov 18, 1967	EF2	16 km	0.1 mi	0
Aug 31, 1966	EF2	68 km	1.0 mi	0
Aug 28, 1965	EF2	73 km	2.0 mi	0
May 20, 1963	EF2	100 km	3.8 mi	0
May 20, 1963	EF2	59 km	0.3 mi	0
May 20, 1963	EF2	66 km	1.5 mi	0
Oct 12, 1962	EF2	78 km	4.1 mi	0
Jul 2, 1961	EF2	86 km	5.1 mi	0

Source: NOAA Storm Prediction Center (EF0+, 1950–2024, US only).

Wildfire History

2 wildfires (100+ acres) recorded within 100 km. Largest: THE RANGE (760 acres, 2005).

Year	Name	Acres Burned	Distance
2005	THE RANGE	760	70 km
2008	NOMANS AERIAL RX	546	94 km

Source: NIFC/IRWIN Wildfire Records (100+ acres).

Monthly Weather

Month	Avg Temperature	Precipitation	Summary
January	37°F (3°C)	4.2 in
February	29°F (-2°C)	3.7 in	Coldest
March	37°F (3°C)	4.4 in
April	47°F (8°C)	4.0 in
May	57°F (14°C)	3.6 in
June	66°F (19°C)	3.5 in	Driest
July	74°F (24°C)	3.5 in	Warmest
August	71°F (22°C)	4.0 in
September	63°F (17°C)	3.8 in
October	52°F (11°C)	3.9 in
November	43°F (6°C)	4.5 in	Wettest
December	33°F (0°C)	4.3 in

Brockton has a seasonal temperature swing of 46°F / from 29°F in February to 74°F in July. Total annual precipitation is 47.4 inches, with November being the wettest month (4.5") and June the driest (3.5").

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