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Weather & Climate in Barnum Island, NY
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Barnum Island experiences four distinct seasons with an average annual temperature of 53°F (12°C). Winters average 33°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 48.6 inches (wetter than the 38-inch national average). The area receives 25.5 inches of snow annually, a moderate snowfall amount. Air quality is rated Good with a median AQI of 36. The city sits at an elevation of 6 feet.
Temperature
33°F Jan (0°C)
75°F Jul (24°C)
| Annual Average | 53.4°F |
| 1% below US avg | |
| January Average | 33°F (0°C) |
| July Average | 75°F (24°C) |
| Sunny Days | 275 days/yr |
Geography
| Elevation | 6 ft (2 m) |
| Area | 1.3 sq mi (3.3 km²) |
| Population Density | 2,498/sq mi |
| Coordinates | 40.6049°N, 73.6431°W |
| Timezone | America/New_York |
| County | Nassau County County |
| Nearest Airport | John F Kennedy International (JFK) 8 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 36.0 |
| Rating | Good |
Natural Hazard Risk
| Overall Risk | Relatively High |
| Risk Score | 97.1 / 100 |
| Social Vulnerability | 25.9 / 100 |
| Community Resilience | 97.0 / 100 |
Hazard Breakdown
| Tornado | Relatively Moderate |
| Hurricane | Relatively High |
| Earthquake | Relatively Moderate |
| Wildfire | Very Low |
| Flood | Relatively High |
| Hail | Very Low |
| Strong Wind | Relatively High |
| Heat Wave | Relatively Moderate |
| Winter Weather | Very High |
| Lightning | Very High |
| Ice Storm | Very High |
| Drought | Very Low |
| Cold Wave | Relatively High |
| Landslide | Relatively Low |
| Coastal Flood | Very High |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Earthquake History
22 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M4.8.
| Apr 5, 2024 | 2024 Tewksbury, New Jersey Earthquake | M4.8 | 95 km | 3 km |
| Apr 5, 2024 | 7 km WSW of Gladstone, New Jersey | M3.7 | 94 km | 4 km |
| Aug 26, 2003 | 4 km NNW of Milford, New Jersey | M3.1 | 124 km | 3 km |
| Jan 9, 1992 | 4 km WNW of Robertsville, New Jersey | M3.1 | 65 km | 8 km |
| Apr 9, 2019 | 63 km SSE of Sagaponack, New York | M3.0 | 142 km | 7 km |
| Oct 28, 1991 | 3 km WNW of Stamford, Connecticut | M3.0 | 52 km | 10 km |
| Aug 3, 2025 | 0 km W of Little Ferry, New Jersey | M3.0 | 44 km | 10 km |
| Feb 3, 2009 | 1 km ESE of Victory Gardens, New Jersey | M3.0 | 80 km | 0 km |
| May 24, 2024 | 6 km E of Califon, New Jersey | M2.9 | 95 km | 7 km |
| Apr 27, 2024 | 7 km WSW of Gladstone, New Jersey | M2.9 | 94 km | 5 km |
| Mar 10, 1992 | 2 km SW of Napeague, New York | M2.8 | 138 km | 10 km |
| Aug 5, 2025 | 1 km N of Hillsdale, New Jersey | M2.8 | 56 km | 12 km |
| Apr 12, 1991 | 2 km ENE of North Castle, New York | M2.7 | 61 km | 9 km |
| Aug 14, 2014 | 6 km SW of Deep River Center, Connecticut | M2.7 | 127 km | 4 km |
| Aug 14, 2015 | 3 km SE of Mendham, New Jersey | M2.6 | 80 km | 8 km |
| May 1, 2024 | 1 km NW of Gladstone, New Jersey | M2.6 | 88 km | 5 km |
| Apr 10, 2024 | 5 km WSW of Gladstone, New Jersey | M2.6 | 92 km | 9 km |
| Oct 27, 2001 | 1 km NNW of Manhattan, New York | M2.6 | 35 km | 5 km |
| Aug 22, 2000 | 2 km WSW of Brewster Hill, New York | M2.6 | 91 km | 7 km |
| Apr 5, 2024 | 6 km ESE of Califon, New Jersey | M2.6 | 95 km | 6 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 | 262 km |
| 2014 | Arthur | Category 1 | 81 mph | 261 km |
| 2012 | Sandy | Category 1 | 92 mph | 259 km |
| 1991 | Bob | Category 2 | 109 mph | 127 km |
| 1985 | Gloria | Category 2 | 98 mph | 29 km |
Source: NOAA IBTrACS (Category 1+, 1980-2026).
Tornado History
159 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF3. Total: 11 fatalities, 112 injuries.
| Date | Rating | Distance | Path | Fatalities |
| Oct 18, 1990 | EF3 | 96 km | 0.5 mi | 0 |
| Sep 26, 1977 | EF3 | 79 km | 5.9 mi | 0 |
| May 28, 1973 | EF3 | 95 km | 0.4 mi | 0 |
| May 28, 1973 | EF3 | 75 km | 0.4 mi | 0 |
| Apr 1, 2023 | EF2 | 81 km | 2.1 mi | 0 |
| Apr 1, 2023 | EF2 | 73 km | 1.6 mi | 0 |
| Apr 1, 2023 | EF2 | 63 km | 0.1 mi | 0 |
| Feb 21, 2023 | EF2 | 97 km | 5.8 mi | 0 |
| May 15, 2018 | EF2 | 100 km | 1.2 mi | 0 |
| Aug 8, 2007 | EF2 | 40 km | 5.9 mi | 0 |
| Jul 12, 2006 | EF2 | 55 km | 10.1 mi | 0 |
| May 27, 2001 | EF2 | 65 km | 1.5 mi | 0 |
| Sep 7, 1998 | EF2 | 6 km | 0.2 mi | 0 |
| Jul 10, 1989 | EF2 | 91 km | 0.5 mi | 0 |
| Jul 10, 1989 | EF2 | 77 km | 0.2 mi | 0 |
| Jun 29, 1982 | EF2 | 96 km | 1.5 mi | 0 |
| Jul 20, 1981 | EF2 | 100 km | 3.6 mi | 0 |
| Sep 18, 1973 | EF2 | 13 km | 1.9 mi | 0 |
| Jul 29, 1971 | EF2 | 99 km | 6.2 mi | 0 |
| Jul 29, 1971 | EF2 | 87 km | 4.5 mi | 0 |
Source: NOAA Storm Prediction Center (EF0+, 1950-2024, US only).
Tsunami History
2 tsunamis 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 | - | 51 km |
| 1895 | HIGH BRIDGE, NJ | Earthquake | - | - | 105 km |
Source: NOAA/NCEI Historical Tsunami Database.
Wildfire History
20 wildfires (100+ acres) recorded within 100 km. Largest: UNNAMED (23,000 acres, 1985).
| Year | Name | Acres Burned | Distance |
| 1985 | UNNAMED | 23,000 | 77 km |
| 1992 | FORKED RIVER MOUTAIN APR | 5,093 | 99 km |
| 2024 | JENNINGS CREEK | 5,069 | 84 km |
| 1992 | POWER PLANT | 4,928 | 99 km |
| 1992 | UNNAMED | 4,470 | 100 km |
| 2023 | JIMMYS WATER HOLE | 3,585 | 91 km |
| 2002 | UNNAMED | 2,824 | 99 km |
| 2010 | FORT DIX RANGE 1-14 | 2,615 | 100 km |
| 1997 | UNNAMED | 1,793 | 98 km |
| 2002 | JAKES BRANCH | 1,364 | 91 km |
| 1995 | UNNAMED | 1,318 | 97 km |
| 2012 | CRESCENT BOW FIRE | 1,068 | 75 km |
| 2002 | UNNAMED | 1,002 | 98 km |
| 1992 | UNNAMED | 959 | 97 km |
| 1986 | LAKEHURST NAVAL AIR | 906 | 89 km |
| 1995 | UNNAMED | 877 | 100 km |
| 1991 | UNNAMED | 860 | 99 km |
| 1997 | WRANGLE BROOK FIRE | 850 | 90 km |
| 1988 | UNNAMED | 833 | 82 km |
| 1999 | UNNAMED | 762 | 98 km |
Source: NIFC/IRWIN Wildfire Records (100+ acres).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 33°F (0°C) | 3.2 in | Coldest |
| February | 33°F (1°C) | 3.1 in | |
| March | 41°F (5°C) | 4.1 in | |
| April | 50°F (10°C) | 3.5 in | |
| May | 60°F (16°C) | 3.6 in | |
| June | 70°F (21°C) | 2.7 in | Driest |
| July | 75°F (24°C) | 3.5 in | Warmest |
| August | 74°F (23°C) | 4.4 in | Wettest |
| September | 67°F (19°C) | 3.2 in | |
| October | 56°F (13°C) | 3.2 in | |
| November | 47°F (8°C) | 3.7 in | |
| December | 37°F (3°C) | 3.6 in |
Barnum Island has a seasonal temperature swing of 42°F / from 33°F in January to 75°F in July. Total annual precipitation is 41.7 inches, with August being the wettest month (4.4") and June the driest (2.7").