All Countries
Weather & Climate in Byram Center, NJ
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Byram Center experiences four distinct seasons with an average annual temperature of 53°F (11°C). Winters average 30°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 45.5 inches. Air quality is rated Good with a median AQI of 39. The city sits at an elevation of 734 feet.
Temperature
30°F Jan (-1°C)
75°F Jul (24°C)
| Annual Average | 52.5°F |
| 3% below US avg | |
| January Average | 30°F (-1°C) |
| July Average | 75°F (24°C) |
| Sunny Days | 275 days/yr |
Geography
| Elevation | 734 ft (224 m) |
| Area | 1.1 sq mi (2.9 km²) |
| Population Density | 706/sq mi |
| Coordinates | 40.9322°N, 74.7126°W |
| Timezone | America/New_York |
| County | Morris County County |
| Nearest Airport | Central Jersey Regional (JVI) 29 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 39.0 |
| Rating | Good |
Natural Hazard Risk
| Overall Risk | Relatively Moderate |
| Risk Score | 92.9 / 100 |
| Social Vulnerability | 10.6 / 100 |
| Community Resilience | 89.5 / 100 |
Hazard Breakdown
| Tornado | Relatively Moderate |
| 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 | Very High |
| Lightning | Relatively High |
| Ice Storm | Relatively Low |
| Drought | Relatively Moderate |
| Cold Wave | Relatively High |
| Landslide | Relatively Low |
| Avalanche | Very Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Earthquake History
28 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M4.8.
| Apr 5, 2024 | 2024 Tewksbury, New Jersey Earthquake | M4.8 | 27 km | 3 km |
| Jan 16, 1994 | 2 km W of Sinking Spring, Pennsylvania | M4.6 | 130 km | 5 km |
| Jan 16, 1994 | 0 km E of Sinking Spring, Pennsylvania | M4.2 | 128 km | 5 km |
| Apr 5, 2024 | 7 km WSW of Gladstone, New Jersey | M3.7 | 27 km | 4 km |
| Jan 9, 1992 | 4 km WNW of Robertsville, New Jersey | M3.1 | 71 km | 8 km |
| Aug 26, 2003 | 4 km NNW of Milford, New Jersey | M3.1 | 49 km | 3 km |
| Aug 3, 2025 | 0 km W of Little Ferry, New Jersey | M3.0 | 56 km | 10 km |
| Oct 28, 1991 | 3 km WNW of Stamford, Connecticut | M3.0 | 96 km | 10 km |
| Feb 3, 2009 | 1 km ESE of Victory Gardens, New Jersey | M3.0 | 17 km | 0 km |
| May 24, 2024 | 6 km E of Califon, New Jersey | M2.9 | 25 km | 7 km |
| Apr 27, 2024 | 7 km WSW of Gladstone, New Jersey | M2.9 | 27 km | 5 km |
| Jan 16, 1994 | 0 km SSE of Sinking Spring, Pennsylvania | M2.9 | 129 km | 5 km |
| Aug 5, 2025 | 1 km N of Hillsdale, New Jersey | M2.8 | 57 km | 12 km |
| May 10, 1993 | 1 km NW of Whitfield, Pennsylvania | M2.8 | 128 km | 5 km |
| Apr 12, 1991 | 2 km ENE of North Castle, New York | M2.7 | 92 km | 9 km |
| Jan 25, 2015 | 4 km ESE of Downingtown, Pennsylvania | M2.6 | 131 km | 2 km |
| Jul 5, 1996 | 2 km NW of Chester Heights, Pennsylvania | M2.6 | 132 km | 18 km |
| Oct 28, 1996 | 2 km W of Reinholds, Pennsylvania | M2.6 | 141 km | 5 km |
| Apr 5, 2024 | 6 km ESE of Califon, New Jersey | M2.6 | 27 km | 6 km |
| Apr 10, 2024 | 5 km WSW of Gladstone, New Jersey | M2.6 | 26 km | 9 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Hurricane History
2 hurricanes (Category 1+) recorded within 500 km since 1980. Strongest on record: Category 2.
| Year | Name | Category | Max Wind | Closest |
| 1991 | Bob | Category 2 | 109 mph | 223 km |
| 1985 | Gloria | Category 2 | 98 mph | 125 km |
Source: NOAA IBTrACS (Category 1+, 1980–2026).
Tornado History
267 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF3. Total: 12 fatalities, 146 injuries.
| Date | Rating | Distance | Path | Fatalities |
| Jul 29, 2021 | EF3 | 93 km | 3.4 mi | 0 |
| May 31, 1998 | EF3 | 52 km | 20.0 mi | 0 |
| Oct 18, 1990 | EF3 | 51 km | 0.5 mi | 0 |
| Jul 14, 1988 | EF3 | 47 km | 7.2 mi | 0 |
| Jul 26, 1981 | EF3 | 75 km | 3.3 mi | 0 |
| Sep 26, 1977 | EF3 | 65 km | 5.9 mi | 0 |
| Mar 21, 1976 | EF3 | 40 km | 0.5 mi | 0 |
| May 28, 1973 | EF3 | 23 km | 0.4 mi | 0 |
| May 28, 1973 | EF3 | 9 km | 0.4 mi | 0 |
| Jun 24, 1960 | EF3 | 74 km | 12.9 mi | 0 |
| Apr 22, 2023 | EF2 | 99 km | 10.0 mi | 0 |
| Apr 1, 2023 | EF2 | 94 km | 1.6 mi | 0 |
| Apr 1, 2023 | EF2 | 91 km | 2.1 mi | 0 |
| Feb 21, 2023 | EF2 | 73 km | 5.8 mi | 0 |
| Jul 29, 2021 | EF2 | 68 km | 6.3 mi | 0 |
| Aug 4, 2020 | EF2 | 97 km | 20.8 mi | 0 |
| Feb 25, 2017 | EF2 | 95 km | 12.5 mi | 0 |
| Jul 23, 2010 | EF2 | 99 km | 25.7 mi | 0 |
| Jul 29, 2009 | EF2 | 35 km | 7.4 mi | 0 |
| Jul 29, 2009 | EF2 | 45 km | 4.6 mi | 0 |
Source: NOAA Storm Prediction Center (EF0+, 1950–2024, US only).
Tsunami History
3 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 | — | 136 km |
| 1895 | HIGH BRIDGE, NJ | Earthquake | — | — | 33 km |
| 1840 | PHILADELPHIA, PENNSYLVANIA | Earthquake | — | — | 133 km |
Source: NOAA/NCEI Historical Tsunami Database.
Wildfire History
15 wildfires (100+ acres) recorded within 100 km. Largest: UNNAMED (23,000 acres, 1985).
| Year | Name | Acres Burned | Distance |
| 1985 | UNNAMED | 23,000 | 58 km |
| 2016 | 16 MILE | 7,896 | 47 km |
| 2024 | JENNINGS CREEK | 5,069 | 44 km |
| 2015 | ROOSA GAP | 2,747 | 82 km |
| 2008 | UNNAMED | 2,224 | 96 km |
| 2016 | SAMS POINT FIRE-VERKEERDER FIRE | 1,929 | 89 km |
| 2004 | CRYSTAL LAKE | 1,838 | 98 km |
| 1988 | UNNAMED | 833 | 60 km |
| 2020 | SEVEN PINES | 790 | 57 km |
| 1985 | UNNAMED | 737 | 68 km |
| 2015 | RAZOR FIRE | 728 | 83 km |
| 2015 | PIPELINE 1 | 666 | 84 km |
| 2016 | BEAR TOWN | 649 | 51 km |
| 2016 | SHERWOOD | 642 | 59 km |
| 1999 | WORTHINGTO | 514 | 34 km |
Source: NIFC/IRWIN Wildfire Records (100+ acres).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 30°F (-1°C) | 3.7 in | |
| February | 28°F (-3°C) | 3.2 in | Coldest, Driest |
| March | 36°F (2°C) | 3.9 in | |
| April | 47°F (8°C) | 4.3 in | |
| May | 57°F (14°C) | 4.7 in | |
| June | 66°F (19°C) | 4.4 in | |
| July | 75°F (24°C) | 4.7 in | Warmest, Wettest |
| August | 69°F (21°C) | 4.5 in | |
| September | 62°F (17°C) | 4.3 in | |
| October | 51°F (11°C) | 3.7 in | |
| November | 41°F (5°C) | 4.3 in | |
| December | 31°F (-1°C) | 3.7 in |
Byram Center has a seasonal temperature swing of 47°F / from 28°F in February to 75°F in July. Total annual precipitation is 49.3 inches, with July being the wettest month (4.7") and February the driest (3.2").