Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Stone Harbor enjoys a temperate climate with an average annual temperature of 56°F (13°C). Winters average 36°F in January while summers reach 77°F in July. The area gets 297 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 2 feet.
Temperature
36°F Jan (2°C)77°F Jul (25°C)
Annual Average
55.7°F
3% above US avg
January Average
36°F (2°C)
July Average
77°F (25°C)
Sunny Days
297 days/yr
Geography
Elevation
2 ft (1 m)
Area
0.8 sq mi (2.0 km²)
Population Density
601/sq mi
Coordinates
39.0417°N, 74.7688°W
Timezone
America/New_York
County
Cape May County County
Nearest Airport
Atlantic City International (ACY) 31 miles away
Precipitation & Snow
Wettest Month (Aug)4.21"
Driest Month (Jun)3.03"
Air Quality
AQI Median
39.0
Rating
Good
Natural Hazard Risk
Overall Risk
Relatively Moderate
Risk Score
91.0 / 100
Social Vulnerability
37.2 / 100
Community Resilience
98.8 / 100
Hazard Breakdown
Tornado
Relatively Low
Hurricane
Relatively Moderate
Earthquake
Relatively Low
Wildfire
Relatively Low
Flood
Relatively Moderate
Hail
Very Low
Strong Wind
Very High
Heat Wave
Relatively Moderate
Winter Weather
Relatively High
Lightning
Relatively Moderate
Ice Storm
Relatively Low
Drought
Relatively Low
Cold Wave
Relatively Low
Landslide
Very Low
Coastal Flood
Very High
Source: FEMA National Risk Index v1.20 (Dec 2025)
Earthquake History
6 earthquakes (M2.5+) recorded within 150 km since 1990.
Strongest on record: M3.2.
Oct 23, 1990
3 km W of Hancocks Bridge, New Jersey
M3.2
82 km
10 km
Jul 1, 2009
3 km ESE of Pennsville, New Jersey
M2.8
91 km
5 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
115 km
18 km
Feb 9, 2023
29 km E of Greenbackville, Virginia
M2.6
115 km
11 km
Feb 26, 1993
2 km SW of Marlton, New Jersey
M2.5
94 km
5 km
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Hurricane History
10 hurricanes (Category 1+) recorded within 500 km since 1980.
Strongest on record: Category 3.
Year
Name
Category
Max Wind
Closest
2014
Arthur
Category 1
92 mph
195 km
2012
Sandy
Category 2
92 mph
159 km
2011
Irene
Category 1
75 mph
107 km
2010
Earl
Category 1
81 mph
276 km
1999
Floyd
Category 1
—
275 km
1998
Bonnie
Category 1
75 mph
264 km
1993
Emily
Category 3
115 mph
235 km
1991
Bob
Category 3
115 mph
154 km
1986
Charley
Category 1
81 mph
186 km
1985
Gloria
Category 2
98 mph
75 km
Source: NOAA IBTrACS (Category 1+, 1980–2026).
Tornado History
132 tornadoes (EF0+) recorded within 100 km since 1950.
Strongest on record: EF3. Total: 3 fatalities, 100 injuries.
Date
Rating
Distance
Path
Fatalities
Apr 1, 2023
EF3
82 km
14.3 mi
1
Sep 1, 2021
EF3
82 km
12.4 mi
0
Jul 21, 1983
EF3
82 km
0.2 mi
0
Apr 28, 1961
EF3
98 km
0.3 mi
0
Jul 29, 2021
EF2
94 km
4.2 mi
0
Aug 4, 2020
EF2
64 km
35.8 mi
0
Apr 15, 2019
EF2
88 km
6.2 mi
0
Aug 20, 1999
EF2
72 km
0.4 mi
0
Aug 21, 1993
EF2
66 km
1.5 mi
0
Jul 31, 1992
EF2
65 km
4.0 mi
0
May 10, 1990
EF2
54 km
0.5 mi
0
Aug 17, 1988
EF2
97 km
1.5 mi
0
Jul 21, 1987
EF2
38 km
0.5 mi
0
Jul 18, 1984
EF2
75 km
1.5 mi
0
Jul 21, 1983
EF2
83 km
1.0 mi
2
Jun 9, 1977
EF2
61 km
0.2 mi
0
Jul 13, 1975
EF2
64 km
1.5 mi
0
Aug 27, 1971
EF2
19 km
28.7 mi
0
Nov 4, 1970
EF2
46 km
0.5 mi
0
Jan 27, 1967
EF2
70 km
0.5 mi
0
Source: NOAA Storm Prediction Center (EF0+, 1950–2024, US only).
Tsunami History
1 tsunami recorded within 500 km.
Year
Location
Cause
Max Wave
Deaths
Distance
1840
PHILADELPHIA, PENNSYLVANIA
Earthquake
—
—
92 km
Source: NOAA/NCEI Historical Tsunami Database.
Wildfire History
20 wildfires (100+ acres) recorded within 100 km.
Largest: GREENWOOD STATE FOREST (21,271 acres, 1995).
Year
Name
Acres Burned
Distance
1995
GREENWOOD STATE FOREST
21,271
98 km
2007
WARREN GROVE
15,315
82 km
2022
MULLICA RIVER FIRE
13,082
72 km
1999
BASS RIVER
12,129
74 km
2019
SPRING HILL FIRE
8,182
88 km
2023
ALLEN ROAD
6,213
72 km
1992
POWER PLANT
4,928
100 km
2024
TEA TIME HILL
4,444
84 km
2006
UNNAMED
3,780
76 km
2017
PENN SWAMP FIRE
3,587
72 km
1989
SIMM PLACE
3,262
87 km
2007
ATSION
2,705
76 km
1992
FOUR MILE COLONY
2,647
93 km
1996
UNNAMED
2,625
72 km
1990
UNNAMED
2,367
81 km
1996
UNNAMED
2,122
81 km
1997
UNNAMED
2,121
70 km
1993
UNNAMED
1,860
81 km
1997
UNNAMED
1,833
81 km
2008
SAUNDERS DITCH
1,814
76 km
Source: NIFC/IRWIN Wildfire Records (100+ acres).
Monthly Weather
Month
Avg Temperature
Precipitation
Summary
January
36°F (2°C)
3.5 in
Coldest
February
36°F (2°C)
3.1 in
March
43°F (6°C)
3.9 in
April
52°F (11°C)
3.5 in
May
61°F (16°C)
3.4 in
June
70°F (21°C)
3.0 in
Driest
July
77°F (25°C)
3.5 in
Warmest
August
74°F (24°C)
4.2 in
Wettest
September
68°F (20°C)
3.2 in
October
57°F (14°C)
3.1 in
November
48°F (9°C)
3.3 in
December
39°F (4°C)
3.5 in
Stone Harbor has a seasonal temperature swing of 41°F / from 36°F in January to 77°F in July. Total annual precipitation is 41.1 inches, with August being the wettest month (4.2") and June the driest (3.0").