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Weather & Climate in Somerset, MA
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Somerset experiences four distinct seasons with an average annual temperature of 53°F (12°C). Winters average 31°F in January while summers reach 75°F in July. The area gets 275 sunny days per year, well above the U.S. average of 205 / making it one of the sunnier locations in the country. Annual precipitation totals 49.4 inches (wetter than the 38-inch national average). The area receives 38.1 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 159 feet.
Temperature
31°F Jan (-1°C)
75°F Jul (24°C)
| Annual Average | 52.9°F |
| 2% below US avg | |
| January Average | 31°F (-1°C) |
| July Average | 75°F (24°C) |
| Sunny Days | 275 days/yr |
Geography
| Elevation | 159 ft (48 m) |
| Area | 11.9 sq mi (30.8 km²) |
| Population Density | 2,310/sq mi |
| Coordinates | 41.7385°N, 71.1651°W |
| Timezone | America/New_York |
| County | Bristol County County |
| Nearest Airport | New Bedford Regional (EWB) 12 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 37.0 |
| Rating | Good |
Natural Hazard Risk
| Overall Risk | Relatively Moderate |
| Risk Score | 89.9 / 100 |
| Social Vulnerability | 32.7 / 100 |
| Community Resilience | 85.0 / 100 |
Hazard Breakdown
| Tornado | Relatively Low |
| Hurricane | Relatively Moderate |
| Earthquake | Relatively Low |
| Wildfire | Very Low |
| Flood | Relatively High |
| Hail | Very Low |
| Strong Wind | Relatively High |
| Heat Wave | Relatively Moderate |
| Winter Weather | Relatively Low |
| Lightning | Relatively Moderate |
| Ice Storm | Relatively High |
| Drought | Relatively Low |
| Cold Wave | Relatively Moderate |
| Landslide | Very Low |
| Coastal Flood | Relatively Moderate |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Earthquake History
20 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M3.7.
| Oct 2, 1994 | 6 km W of Hardwick, Massachusetts | M3.7 | 114 km | 10 km |
| Oct 2, 1994 | 1 km NW of Hardwick, Massachusetts | M3.3 | 111 km | 10 km |
| Jan 12, 2015 | 0 km NE of Wauregan, Connecticut | M3.3 | 61 km | 5 km |
| Jun 16, 2000 | 5 km NE of Granville, Massachusetts | M3.3 | 143 km | 10 km |
| Jan 10, 1999 | 2 km ENE of Merrimac, Massachusetts | M3.1 | 123 km | 2 km |
| Mar 22, 1996 | 2 km NE of Bristol, Rhode Island | M3.1 | 8 km | 12 km |
| Jan 27, 2000 | 3 km WNW of Fremont, New Hampshire | M3.0 | 140 km | 1 km |
| Jan 10, 1999 | 1 km NNE of Merrimac, Massachusetts | M3.0 | 123 km | 2 km |
| Sep 28, 2002 | 2 km N of Wilton, New Hampshire | M2.8 | 134 km | 5 km |
| Mar 10, 1992 | 2 km SW of Napeague, New York | M2.8 | 113 km | 10 km |
| Oct 11, 1990 | 5 km NNE of The Pinehills, Massachusetts | M2.7 | 54 km | 13 km |
| Oct 13, 1999 | 2 km E of Littleton Common, Massachusetts | M2.7 | 93 km | 2 km |
| Feb 15, 2018 | 0 km SE of East Kingston, New Hampshire | M2.7 | 132 km | 7 km |
| Sep 30, 1991 | 0 km SSE of Bedford, New Hampshire | M2.7 | 137 km | 4 km |
| Aug 14, 2014 | 6 km SW of Deep River Center, Connecticut | M2.7 | 119 km | 4 km |
| Jan 13, 2015 | 2 km E of Wauregan, Connecticut | M2.6 | 59 km | 9 km |
| Apr 22, 1996 | 3 km NE of North Westport, Massachusetts | M2.6 | 11 km | 5 km |
| Jun 7, 2002 | 3 km NNW of Hopedale, Massachusetts | M2.5 | 57 km | 5 km |
| Jan 23, 1990 | 3 km NNW of Boxborough, Massachusetts | M2.5 | 93 km | 5 km |
| Jan 21, 2000 | 3 km W of Fremont, New Hampshire | M2.5 | 139 km | 2 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 | 260 km |
| 2014 | Arthur | Category 1 | 75 mph | 211 km |
| 1996 | Edouard | Category 1 | 81 mph | 256 km |
| 1991 | Bob | Category 2 | 104 mph | 42 km |
| 1985 | Gloria | Category 1 | 86 mph | 137 km |
Source: NOAA IBTrACS (Category 1+, 1980–2026).
Tornado History
128 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF3. Total: 2 fatalities, 69 injuries.
| Date | Rating | Distance | Path | Fatalities |
| Sep 29, 1974 | EF3 | 96 km | 0.1 mi | 0 |
| Jun 9, 1953 | EF3 | 69 km | 28.0 mi | 0 |
| Aug 18, 2023 | EF2 | 35 km | 9.1 mi | 0 |
| Jul 28, 2014 | EF2 | 74 km | 1.9 mi | 0 |
| Aug 7, 1986 | EF2 | 24 km | 4.0 mi | 0 |
| Aug 28, 1970 | EF2 | 27 km | 1.0 mi | 0 |
| Nov 18, 1967 | EF2 | 34 km | 0.1 mi | 0 |
| Aug 31, 1966 | EF2 | 82 km | 1.0 mi | 0 |
| May 20, 1963 | EF2 | 86 km | 1.5 mi | 0 |
| May 20, 1963 | EF2 | 82 km | 0.3 mi | 0 |
| Oct 12, 1962 | EF2 | 80 km | 4.1 mi | 0 |
| Sep 7, 1958 | EF2 | 96 km | 1.3 mi | 0 |
| Aug 25, 1958 | EF2 | 89 km | 1.0 mi | 0 |
| Jul 11, 1958 | EF2 | 85 km | 1.5 mi | 0 |
| Nov 21, 1956 | EF2 | 48 km | 0.1 mi | 0 |
| Nov 21, 1956 | EF2 | 86 km | 0.1 mi | 0 |
| Dec 18, 1951 | EF2 | 67 km | 0.1 mi | 0 |
| Aug 20, 1951 | EF2 | 91 km | 0.1 mi | 0 |
| Jun 26, 2024 | EF1 | 30 km | 8.6 mi | 0 |
| Jun 26, 2024 | EF1 | 13 km | 0.6 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 | 94 km |
| 2008 | NOMANS AERIAL RX | 546 | 61 km |
Source: NIFC/IRWIN Wildfire Records (100+ acres).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 31°F (-1°C) | 4.3 in | |
| February | 29°F (-1°C) | 3.8 in | Coldest |
| March | 38°F (3°C) | 4.5 in | |
| April | 47°F (8°C) | 4.2 in | |
| May | 57°F (14°C) | 3.7 in | |
| June | 66°F (19°C) | 3.6 in | |
| July | 75°F (24°C) | 3.5 in | Warmest, Driest |
| August | 71°F (22°C) | 4.1 in | |
| September | 63°F (17°C) | 3.9 in | |
| October | 53°F (11°C) | 3.9 in | |
| November | 44°F (6°C) | 4.6 in | Wettest |
| December | 33°F (1°C) | 4.4 in |
Somerset has a seasonal temperature swing of 46°F / from 29°F in February to 75°F in July. Total annual precipitation is 48.5 inches, with November being the wettest month (4.6") and July the driest (3.5").