Weather & Climate in Falmouth, MA
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Falmouth experiences four distinct seasons with an average annual temperature of 52°F (11°C). Winters average 32°F in January while summers reach 72°F in July. Annual precipitation totals 42.1 inches. The area receives 25.3 inches of snow annually, a moderate snowfall amount. Air quality is rated Good with a median AQI of 37. 93% of days have good air quality. The city sits at an elevation of 16 feet.
Temperature
32°F Jan (0°C)
72°F Jul (22°C)
| Annual Average | 51.7°F |
| 4% below US avg | |
| January Average | 32°F (0°C) |
| July Average | 72°F (22°C) |
Geography
| Elevation | 16 ft (5 m) |
| Area | 2.3 sq mi (5.8 km²) |
| Population Density | 1,912/sq mi |
| Coordinates | 41.5514°N, 70.6088°W |
| Timezone | America/New_York |
| County | Dukes County County |
| Nearest Airport | New Bedford Regional (EWB) 20 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 37.0 |
| Rating | Good |
| Good Days % | 92.7% |
| Unhealthy Days | 1 |
Natural Hazard Risk
| Overall Risk | Very Low |
| Risk Score | 16.8 / 100 |
| Social Vulnerability | 26.8 / 100 |
| Community Resilience | 99.7 / 100 |
Hazard Breakdown
| Tornado | Very Low |
| Hurricane | Relatively Low |
| Earthquake | Very Low |
| Wildfire | Very Low |
| Flood | Very Low |
| Hail | Very Low |
| Strong Wind | Very Low |
| Heat Wave | Very Low |
| Winter Weather | Very Low |
| Lightning | Very Low |
| Ice Storm | Very Low |
| Drought | Very Low |
| Cold Wave | Very Low |
| Landslide | Very Low |
| Coastal Flood | Relatively Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Earthquake History
13 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M3.3.
| Jan 12, 2015 | 0 km NE of Wauregan, Connecticut | M3.3 | 110 km | 5 km |
| Mar 22, 1996 | 2 km NE of Bristol, Rhode Island | M3.1 | 55 km | 12 km |
| Jan 10, 1999 | 2 km ENE of Merrimac, Massachusetts | M3.1 | 147 km | 2 km |
| Mar 12, 2002 | 52 km E of Chatham, Massachusetts | M3.0 | 107 km | 1 km |
| Jan 10, 1999 | 1 km NNE of Merrimac, Massachusetts | M3.0 | 147 km | 2 km |
| Jul 22, 2003 | 72 km NNE of Provincetown, Massachusetts | M3.0 | 139 km | 10 km |
| Mar 10, 1992 | 2 km SW of Napeague, New York | M2.8 | 138 km | 10 km |
| Oct 11, 1990 | 5 km NNE of The Pinehills, Massachusetts | M2.7 | 43 km | 13 km |
| Oct 13, 1999 | 2 km E of Littleton Common, Massachusetts | M2.7 | 131 km | 2 km |
| Apr 22, 1996 | 3 km NE of North Westport, Massachusetts | M2.6 | 40 km | 5 km |
| Jan 13, 2015 | 2 km E of Wauregan, Connecticut | M2.6 | 108 km | 9 km |
| Jun 7, 2002 | 3 km NNW of Hopedale, Massachusetts | M2.5 | 104 km | 5 km |
| Jan 23, 1990 | 3 km NNW of Boxborough, Massachusetts | M2.5 | 133 km | 5 km |
Source: USGS Earthquake Catalog (M2.5+, 1990-2025). Sorted by magnitude.
Hurricane History
6 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 | 242 km |
| 2014 | Arthur | Category 1 | 75 mph | 169 km |
| 2008 | Kyle | Category 1 | 86 mph | 293 km |
| 1996 | Edouard | Category 1 | 81 mph | 208 km |
| 1991 | Bob | Category 2 | 109 mph | 68 km |
| 1985 | Gloria | Category 1 | 86 mph | 186 km |
Source: NOAA IBTrACS (Category 1+, 1980-2026).
Tornado History
62 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF2. Total: 2 fatalities, 39 injuries.
| Date | Rating | Distance | Path | Fatalities |
| Aug 18, 2023 | EF2 | 85 km | 9.1 mi | 0 |
| Aug 7, 1986 | EF2 | 74 km | 4.0 mi | 0 |
| Aug 28, 1970 | EF2 | 25 km | 1.0 mi | 0 |
| Nov 18, 1967 | EF2 | 52 km | 0.1 mi | 0 |
| Nov 21, 1956 | EF2 | 83 km | 0.1 mi | 0 |
| Dec 18, 1951 | EF2 | 21 km | 0.1 mi | 0 |
| Jun 26, 2024 | EF1 | 80 km | 8.6 mi | 0 |
| Jun 26, 2024 | EF1 | 63 km | 0.6 mi | 0 |
| Sep 13, 2023 | EF1 | 83 km | 0.2 mi | 0 |
| Sep 13, 2023 | EF1 | 95 km | 0.2 mi | 0 |
| Aug 18, 2023 | EF1 | 77 km | 7.6 mi | 0 |
| Aug 18, 2023 | EF1 | 75 km | 0.4 mi | 0 |
| Aug 8, 2023 | EF1 | 25 km | 0.9 mi | 0 |
| Jul 29, 2023 | EF1 | 74 km | 0.2 mi | 0 |
| Jul 23, 2019 | EF1 | 32 km | 0.3 mi | 0 |
| Jul 23, 2019 | EF1 | 47 km | 2.8 mi | 0 |
| Jul 23, 2019 | EF1 | 29 km | 5.5 mi | 0 |
| Oct 23, 2018 | EF1 | 67 km | 0.8 mi | 0 |
| Oct 23, 2018 | EF1 | 80 km | 1.5 mi | 0 |
| Jul 23, 2008 | EF1 | 59 km | 4.3 mi | 0 |
Source: NOAA Storm Prediction Center (EF0+, 1950-2024, US only).
Wildfire History
1 wildfire (100+ acres) recorded within 100 km. Largest: NOMANS AERIAL RX (546 acres, 2008).
| Year | Name | Acres Burned | Distance |
| 2008 | NOMANS AERIAL RX | 546 | 37 km |
Source: NIFC/IRWIN Wildfire Records (100+ acres).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 32°F (0°C) | 3.3 in | Coldest |
| February | 33°F (1°C) | 2.6 in | Driest |
| March | 37°F (3°C) | 4.0 in | |
| April | 47°F (8°C) | 3.7 in | |
| May | 56°F (13°C) | 3.3 in | |
| June | 65°F (18°C) | 3.2 in | |
| July | 72°F (22°C) | 2.8 in | Warmest |
| August | 72°F (22°C) | 3.4 in | |
| September | 66°F (19°C) | 3.8 in | |
| October | 56°F (13°C) | 4.4 in | Wettest |
| November | 46°F (8°C) | 4.0 in | |
| December | 38°F (3°C) | 3.8 in |
Falmouth has a seasonal temperature swing of 40°F / from 32°F in January to 72°F in July. Total annual precipitation is 42.1 inches, with October being the wettest month (4.4") and February the driest (2.6").