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Weather & Climate in Deep River Center, CT
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Deep River Center experiences four distinct seasons with an average annual temperature of 53°F (12°C). Winters average 32°F in January while summers reach 75°F in July. The area gets 282 sunny days per year, well above the U.S. average of 205 / making it one of the sunnier locations in the country. Air quality is rated Good with a median AQI of 39. The city sits at an elevation of 87 feet.
Temperature
32°F Jan (0°C)
75°F Jul (24°C)
| Annual Average | 53.0°F |
| 2% below US avg | |
| January Average | 32°F (0°C) |
| July Average | 75°F (24°C) |
| Sunny Days | 282 days/yr |
Geography
| Elevation | 87 ft (27 m) |
| Area | 2.7 sq mi (7.0 km²) |
| Population Density | 694/sq mi |
| Coordinates | 41.3789°N, 72.4405°W |
| Timezone | America/New_York |
| County | Lower Connecticut River Valley Planning Region County |
| Nearest Airport | Bradley International (BDL) 41 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 39.0 |
| Rating | Good |
Natural Hazard Risk
| Overall Risk | Relatively Moderate |
| Risk Score | 83.8 / 100 |
| Social Vulnerability | 17.9 / 100 |
| Community Resilience | 90.4 / 100 |
Hazard Breakdown
| Tornado | Relatively Low |
| Hurricane | Relatively Moderate |
| Earthquake | Relatively Low |
| Wildfire | Very Low |
| Flood | Relatively Moderate |
| Hail | Very Low |
| Strong Wind | Relatively Moderate |
| Heat Wave | Relatively Low |
| Winter Weather | Relatively Moderate |
| Lightning | Relatively Moderate |
| Ice Storm | Relatively Moderate |
| Drought | Relatively Low |
| Cold Wave | Relatively Low |
| Landslide | Relatively Low |
| Coastal Flood | Relatively Moderate |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Earthquake History
19 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 | 109 km | 10 km |
| Jan 12, 2015 | 0 km NE of Wauregan, Connecticut | M3.3 | 61 km | 5 km |
| Oct 2, 1994 | 1 km NW of Hardwick, Massachusetts | M3.3 | 111 km | 10 km |
| Jun 16, 2000 | 5 km NE of Granville, Massachusetts | M3.3 | 86 km | 10 km |
| Mar 22, 1996 | 2 km NE of Bristol, Rhode Island | M3.1 | 106 km | 12 km |
| Apr 9, 2019 | 63 km SSE of Sagaponack, New York | M3.0 | 116 km | 7 km |
| Aug 3, 2025 | 0 km W of Little Ferry, New Jersey | M3.0 | 147 km | 10 km |
| Oct 28, 1991 | 3 km WNW of Stamford, Connecticut | M3.0 | 101 km | 10 km |
| Mar 10, 1992 | 2 km SW of Napeague, New York | M2.8 | 52 km | 10 km |
| Aug 5, 2025 | 1 km N of Hillsdale, New Jersey | M2.8 | 140 km | 12 km |
| Apr 12, 1991 | 2 km ENE of North Castle, New York | M2.7 | 105 km | 9 km |
| Aug 14, 2014 | 6 km SW of Deep River Center, Connecticut | M2.7 | 6 km | 4 km |
| Aug 22, 2000 | 2 km WSW of Brewster Hill, New York | M2.6 | 99 km | 7 km |
| Oct 27, 2001 | 1 km NNW of Manhattan, New York | M2.6 | 144 km | 5 km |
| Jan 13, 2015 | 2 km E of Wauregan, Connecticut | M2.6 | 62 km | 9 km |
| Apr 22, 1996 | 3 km NE of North Westport, Massachusetts | M2.6 | 120 km | 5 km |
| Jun 7, 2002 | 3 km NNW of Hopedale, Massachusetts | M2.5 | 114 km | 5 km |
| Jan 23, 1990 | 3 km NNW of Boxborough, Massachusetts | M2.5 | 147 km | 5 km |
| Jan 15, 1992 | 5 km NNE of Tuxedo Park, New York | M2.5 | 145 km | 7 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Hurricane History
4 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 | 252 km |
| 2014 | Arthur | Category 1 | 75 mph | 258 km |
| 1991 | Bob | Category 2 | 109 mph | 73 km |
| 1985 | Gloria | Category 1 | 86 mph | 65 km |
Source: NOAA IBTrACS (Category 1+, 1980–2026).
Tornado History
187 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF4. Total: 7 fatalities, 931 injuries.
| Date | Rating | Distance | Path | Fatalities |
| Jul 10, 1989 | EF4 | 38 km | 3.0 mi | 0 |
| Oct 3, 1979 | EF4 | 59 km | 11.3 mi | 3 |
| Jun 1, 2011 | EF3 | 84 km | 37.6 mi | 3 |
| Jul 29, 1971 | EF3 | 54 km | 0.1 mi | 0 |
| May 24, 1962 | EF3 | 60 km | 11.6 mi | 1 |
| May 10, 1954 | EF3 | 60 km | 0.3 mi | 0 |
| Aug 21, 1951 | EF3 | 23 km | 0.1 mi | 0 |
| Aug 18, 2023 | EF2 | 86 km | 9.1 mi | 0 |
| Jun 23, 2001 | EF2 | 73 km | 0.5 mi | 0 |
| Aug 8, 1999 | EF2 | 43 km | 4.0 mi | 0 |
| Jul 10, 1989 | EF2 | 68 km | 0.2 mi | 0 |
| Jul 10, 1989 | EF2 | 89 km | 10.0 mi | 0 |
| Jul 10, 1989 | EF2 | 62 km | 5.0 mi | 0 |
| Aug 7, 1986 | EF2 | 93 km | 4.0 mi | 0 |
| Jul 5, 1984 | EF2 | 53 km | 3.0 mi | 0 |
| Jun 30, 1976 | EF2 | 90 km | 1.0 mi | 0 |
| Jul 24, 1975 | EF2 | 82 km | 0.3 mi | 0 |
| Sep 18, 1973 | EF2 | 46 km | 0.1 mi | 0 |
| Sep 6, 1973 | EF2 | 47 km | 3.3 mi | 0 |
| Aug 31, 1973 | EF2 | 46 km | 0.1 mi | 0 |
Source: NOAA Storm Prediction Center (EF0+, 1950–2024, US only).
Tsunami History
1 tsunami recorded within 500 km. Highest wave on record: 0.3 m (1 ft).
| Year | Location | Cause | Max Wave | Deaths | Distance |
| 1964 | LONG ISLAND, NY | Meteorological | 0.3 m | — | 85 km |
Source: NOAA/NCEI Historical Tsunami Database.
Wildfire History
1 wildfire (100+ acres) recorded within 100 km. Largest: CRESCENT BOW FIRE (1,068 acres, 2012).
| Year | Name | Acres Burned | Distance |
| 2012 | CRESCENT BOW FIRE | 1,068 | 64 km |
Source: NIFC/IRWIN Wildfire Records (100+ acres).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 32°F (0°C) | 4.2 in | |
| February | 29°F (-2°C) | 3.7 in | Coldest, Driest |
| March | 37°F (3°C) | 4.3 in | |
| April | 47°F (8°C) | 4.5 in | |
| May | 57°F (14°C) | 4.2 in | |
| June | 66°F (19°C) | 3.9 in | |
| July | 75°F (24°C) | 3.7 in | Warmest |
| August | 71°F (22°C) | 3.9 in | |
| September | 63°F (17°C) | 3.9 in | |
| October | 53°F (11°C) | 4.1 in | |
| November | 44°F (6°C) | 4.7 in | Wettest |
| December | 33°F (1°C) | 4.4 in |
Deep River Center has a seasonal temperature swing of 46°F / from 29°F in February to 75°F in July. Total annual precipitation is 49.4 inches, with November being the wettest month (4.7") and February the driest (3.7").