Climate of New Jersey

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Koppen climate types of New Jersey, using 1991-2020 climate normals. Koppen Climate Types New Jersey.png
Köppen climate types of New Jersey, using 1991-2020 climate normals.

The climate of New Jersey classification of the U.S. state of New Jersey is humid subtropical in South Jersey with a humid continental climate in North Jersey, particularly in the northwestern area of the state. The northwest part of New Jersey is the snowiest due to the higher elevations that earn it a Dfb classification. During the winters, New Jersey can experience Nor'easters, which are snowstorms that affect the Northeastern United States, and Atlantic Canada. However, many would-be snow events in the state end up turning to rain due to warm ocean air being brought in by the storm.[ failed verification ] [1] New Jersey's climate is shaped by its proximity to the Atlantic Ocean which provides moisture and moderates temperatures. [2] According to climatology research by the U.S. National Oceanic and Atmospheric Administration, New Jersey has been the fastest-warming state by average air temperature over a 100-year period beginning in the early 20th century, [3] related to global warming.

Contents

Temperatures

Average daily low temperature in January NJ jan low temp.svg
Average daily low temperature in January
Average daily high temperature in July NJ jul high temp.svg
Average daily high temperature in July

Temperatures are usually coolest in the northwestern part of the state and warmest in the southern part of the state. The temperature difference is greatest in the winter and the least in the summer. All parts of the state have recorded temperatures below 0 degrees and in excess of 100 degrees. The average number of freeze free days ranges from 163 days in the highlands to 217 along the coast. [4] The highest recorded temperature in the state of New Jersey was 110° on July 10, 1936 in Runyon and the lowest was -34°F in River Vale on January 5, 1904. [5] The hardiness zone ranges from 5b in high areas of Sussex County to 8a in parts of Atlantic City and Cape May.

Precipitation

The average annual precipitation in New Jersey ranges from 40 inches along the southeastern coast to around 51 inches in the north-central part of the state. The driest season is usually autumn which has an average of 8 days per month with measurable precipitation. During other seasons the average month has between 9 and 12 days of precipitation. Most areas receive between 25-30 thunderstorms a year. While tornadoes are possible, they tend to be rare and weak. There are usually about five tornadoes reported each year statewide. [4] The greatest 24-hour rainfall was 14.81 inches, which occurred in Tuckerton on August 19 - 20, 1939. [5]

Snowfall

Snow is relatively common in New Jersey, with most of it occurring between November 15 and April 15. Significant snowfall is much rarer along the coastline and in South Jersey than in Interior North Jersey. [4] The record for 24-hour snowfall is 32 inches in Rutherford on December 14, 1915. The greatest snow depth ever recorded was 52 inches at the Canistear Reservoir in Vernon Township on February 5, 1961. [5]

Climate change

Climate change is affecting New Jersey faster than much of the rest of the United States. New Jersey has warmed up faster than any other U.S. state by average air temperature over a 100-year period beginning in the early 20th century. [3] Not also to mention that New Jersey's rapid urban and suburban development over 20th century has contributed to "warming faster" than other states in past 100 years. This issue is called urban heat island effect. This is largely due to its small size and high urban to rural proportion than other state. [6]

Climate data for select cities

Climate data for Atlantic City International Airport, 1991–2020 normals, [lower-alpha 1] extremes 1874–present [lower-alpha 2]
MonthJanFebMarAprMayJunJulAugSepOctNovDecYear
Record high °F (°C)78
(26)
76
(24)
87
(31)
94
(34)
99
(37)
106
(41)
105
(41)
103
(39)
99
(37)
96
(36)
84
(29)
77
(25)
106
(41)
Mean maximum °F (°C)63.5
(17.5)
64.8
(18.2)
73.2
(22.9)
83.2
(28.4)
89.3
(31.8)
94.5
(34.7)
96.9
(36.1)
94.6
(34.8)
90.1
(32.3)
82.8
(28.2)
72.7
(22.6)
65.3
(18.5)
98.1
(36.7)
Mean daily maximum °F (°C)43.2
(6.2)
45.8
(7.7)
52.6
(11.4)
63.3
(17.4)
72.5
(22.5)
81.5
(27.5)
86.6
(30.3)
84.8
(29.3)
78.5
(25.8)
67.7
(19.8)
57.1
(13.9)
48.1
(8.9)
65.1
(18.4)
Daily mean °F (°C)34.1
(1.2)
36.0
(2.2)
42.6
(5.9)
52.5
(11.4)
61.9
(16.6)
71.4
(21.9)
76.9
(24.9)
75.0
(23.9)
68.4
(20.2)
57.1
(13.9)
46.8
(8.2)
38.7
(3.7)
55.1
(12.8)
Mean daily minimum °F (°C)25.1
(−3.8)
26.2
(−3.2)
32.6
(0.3)
41.7
(5.4)
51.4
(10.8)
61.3
(16.3)
67.2
(19.6)
65.2
(18.4)
58.2
(14.6)
46.4
(8.0)
36.6
(2.6)
29.4
(−1.4)
45.1
(7.3)
Mean minimum °F (°C)6.5
(−14.2)
9.7
(−12.4)
16.1
(−8.8)
26.7
(−2.9)
36.0
(2.2)
46.2
(7.9)
55.9
(13.3)
53.8
(12.1)
43.5
(6.4)
31.0
(−0.6)
20.4
(−6.4)
14.0
(−10.0)
4.4
(−15.3)
Record low °F (°C)−10
(−23)
−11
(−24)
2
(−17)
12
(−11)
25
(−4)
37
(3)
42
(6)
40
(4)
32
(0)
20
(−7)
10
(−12)
−7
(−22)
−11
(−24)
Average precipitation inches (mm)3.38
(86)
3.23
(82)
4.52
(115)
3.32
(84)
3.34
(85)
3.58
(91)
4.47
(114)
4.59
(117)
3.55
(90)
4.14
(105)
3.37
(86)
4.47
(114)
45.96
(1,167)
Average snowfall inches (cm)5.7
(14)
5.9
(15)
2.2
(5.6)
0.3
(0.76)
0.0
(0.0)
0.0
(0.0)
0.0
(0.0)
0.0
(0.0)
0.0
(0.0)
0.0
(0.0)
0.1
(0.25)
3.2
(8.1)
17.4
(44)
Average extreme snow depth inches (cm)3.6
(9.1)
3.1
(7.9)
1.3
(3.3)
0.1
(0.25)
0.0
(0.0)
0.0
(0.0)
0.0
(0.0)
0.0
(0.0)
0.0
(0.0)
0.0
(0.0)
0.0
(0.0)
1.9
(4.8)
6.0
(15)
Average precipitation days (≥ 0.01 in)10.810.410.911.410.59.99.99.28.58.98.910.8120.1
Average snowy days (≥ 0.1 in)3.03.21.20.10.00.00.00.00.00.00.01.48.9
Average relative humidity (%)69.569.066.966.470.772.973.975.776.474.872.870.671.6
Average dew point °F (°C)21.6
(−5.8)
23.2
(−4.9)
30.0
(−1.1)
37.9
(3.3)
49.5
(9.7)
59.4
(15.2)
64.8
(18.2)
64.2
(17.9)
57.7
(14.3)
46.4
(8.0)
37.0
(2.8)
27.0
(−2.8)
43.2
(6.2)
Mean monthly sunshine hours 150.8157.9204.5218.9243.9266.2276.3271.3227.6200.5147.4133.82,499.1
Percent possible sunshine 50535555556061646158494656
Average ultraviolet index 1.62.64.26.07.58.58.67.76.03.82.11.55.0
Source 1: NOAA (relative humidity, dew point and sun 1961–1990) [8] [9] [10]
Source 2: UV Index Today (1995 to 2022) [11]
Climate data for Newark, New Jersey (Newark Liberty Int'l), 1991–2020 normals, extremes 1893–present
MonthJanFebMarAprMayJunJulAugSepOctNovDecYear
Record high °F (°C)74
(23)
80
(27)
89
(32)
97
(36)
99
(37)
103
(39)
108
(42)
105
(41)
105
(41)
96
(36)
85
(29)
76
(24)
108
(42)
Mean maximum °F (°C)61.8
(16.6)
62.5
(16.9)
72.3
(22.4)
84.4
(29.1)
91.4
(33.0)
95.9
(35.5)
98.7
(37.1)
95.9
(35.5)
91.5
(33.1)
82.4
(28.0)
72.2
(22.3)
63.8
(17.7)
100.0
(37.8)
Mean daily maximum °F (°C)40.0
(4.4)
43.0
(6.1)
50.9
(10.5)
62.6
(17.0)
72.6
(22.6)
81.8
(27.7)
86.9
(30.5)
84.7
(29.3)
77.7
(25.4)
66.0
(18.9)
54.9
(12.7)
44.8
(7.1)
63.8
(17.7)
Daily mean °F (°C)32.8
(0.4)
35.1
(1.7)
42.5
(5.8)
53.3
(11.8)
63.3
(17.4)
72.7
(22.6)
78.2
(25.7)
76.4
(24.7)
69.2
(20.7)
57.5
(14.2)
47.0
(8.3)
38.0
(3.3)
55.5
(13.1)
Mean daily minimum °F (°C)25.5
(−3.6)
27.2
(−2.7)
34.2
(1.2)
44.1
(6.7)
53.9
(12.2)
63.6
(17.6)
69.4
(20.8)
68.0
(20.0)
60.7
(15.9)
49.0
(9.4)
39.0
(3.9)
31.2
(−0.4)
47.1
(8.4)
Mean minimum °F (°C)9.1
(−12.7)
12.1
(−11.1)
19.4
(−7.0)
32.3
(0.2)
42.5
(5.8)
52.5
(11.4)
61.9
(16.6)
59.2
(15.1)
48.3
(9.1)
36.1
(2.3)
25.9
(−3.4)
17.2
(−8.2)
7.0
(−13.9)
Record low °F (°C)−10
(−23)
−14
(−26)
3
(−16)
13
(−11)
33
(1)
41
(5)
49
(9)
45
(7)
34
(1)
25
(−4)
12
(−11)
−13
(−25)
−14
(−26)
Average precipitation inches (mm)3.42
(87)
2.98
(76)
4.13
(105)
3.87
(98)
3.97
(101)
4.34
(110)
4.66
(118)
4.15
(105)
3.82
(97)
3.79
(96)
3.33
(85)
4.14
(105)
46.60
(1,184)
Average snowfall inches (cm)9.1
(23)
10.1
(26)
5.6
(14)
0.5
(1.3)
0.0
(0.0)
0.0
(0.0)
0.0
(0.0)
0.0
(0.0)
0.0
(0.0)
0.2
(0.51)
0.6
(1.5)
5.4
(14)
31.5
(80)
Average extreme snow depth inches (cm)5.6
(14)
6.3
(16)
3.2
(8.1)
0.2
(0.51)
0.0
(0.0)
0.0
(0.0)
0.0
(0.0)
0.0
(0.0)
0.0
(0.0)
0.1
(0.25)
0.4
(1.0)
3.7
(9.4)
10.8
(27)
Average precipitation days (≥ 0.01 in)10.610.010.911.511.410.910.09.88.79.48.811.1123.1
Average snowy days (≥ 0.1 in)4.63.82.70.30.00.00.00.00.00.00.32.814.5
Average relative humidity (%)65.463.359.957.562.063.063.466.267.966.366.566.764.0
Average dew point °F (°C)19.2
(−7.1)
20.5
(−6.4)
27.1
(−2.7)
35.2
(1.8)
47.7
(8.7)
57.0
(13.9)
62.2
(16.8)
62.4
(16.9)
56.1
(13.4)
44.6
(7.0)
35.2
(1.8)
24.8
(−4.0)
41.0
(5.0)
Average ultraviolet index 2346788864215
Source 1: NOAA (relative humidity and dew point 1961-1989) [12] [13] [14]
Source 2: Weather Atlas (UV) [15]
Climate data for Newark
MonthJanFebMarAprMayJunJulAugSepOctNovDecYear
Average sea temperature °F (°C)41.7
(5.4)
39.7
(4.3)
40.2
(4.5)
45.1
(7.3)
52.5
(11.4)
64.5
(18.1)
72.1
(22.3)
74.1
(23.4)
70.1
(21.2)
63.0
(17.3)
54.3
(12.4)
47.2
(8.4)
55.4
(13.0)
Source: Weather Atlas [15]
Climate data for Trenton, New Jersey (Trenton–Mercer Airport) 1991–2020 normals, extremes 1865–present
MonthJanFebMarAprMayJunJulAugSepOctNovDecYear
Record high °F (°C)73
(23)
78
(26)
87
(31)
93
(34)
99
(37)
100
(38)
106
(41)
105
(41)
101
(38)
94
(34)
83
(28)
76
(24)
106
(41)
Mean maximum °F (°C)62.7
(17.1)
62.7
(17.1)
74.2
(23.4)
83.0
(28.3)
88.6
(31.4)
93.4
(34.1)
96.3
(35.7)
94.3
(34.6)
89.7
(32.1)
81.4
(27.4)
72.0
(22.2)
64.2
(17.9)
97.2
(36.2)
Mean daily maximum °F (°C)39.7
(4.3)
42.8
(6.0)
50.8
(10.4)
62.9
(17.2)
72.4
(22.4)
81.0
(27.2)
86.0
(30.0)
84.0
(28.9)
77.1
(25.1)
65.5
(18.6)
54.5
(12.5)
44.4
(6.9)
63.4
(17.4)
Daily mean °F (°C)32.0
(0.0)
34.3
(1.3)
41.7
(5.4)
52.5
(11.4)
62.0
(16.7)
71.0
(21.7)
76.3
(24.6)
74.4
(23.6)
67.4
(19.7)
55.7
(13.2)
45.4
(7.4)
36.8
(2.7)
54.1
(12.3)
Mean daily minimum °F (°C)24.3
(−4.3)
25.9
(−3.4)
32.7
(0.4)
42.1
(5.6)
51.6
(10.9)
60.9
(16.1)
66.6
(19.2)
64.8
(18.2)
57.7
(14.3)
45.9
(7.7)
36.3
(2.4)
29.3
(−1.5)
44.8
(7.1)
Mean minimum °F (°C)7.2
(−13.8)
10.0
(−12.2)
17.9
(−7.8)
29.0
(−1.7)
37.7
(3.2)
48.3
(9.1)
57.0
(13.9)
54.4
(12.4)
43.2
(6.2)
31.6
(−0.2)
21.8
(−5.7)
14.8
(−9.6)
5.1
(−14.9)
Record low °F (°C)−16
(−27)
−14
(−26)
0
(−18)
11
(−12)
31
(−1)
39
(4)
46
(8)
39
(4)
34
(1)
21
(−6)
9
(−13)
−8
(−22)
−16
(−27)
Average precipitation inches (mm)3.29
(84)
2.63
(67)
3.97
(101)
3.63
(92)
3.99
(101)
4.25
(108)
4.39
(112)
4.22
(107)
4.09
(104)
3.79
(96)
3.18
(81)
4.04
(103)
45.47
(1,155)
Average snowfall inches (cm)7.9
(20)
8.6
(22)
4.9
(12)
0.5
(1.3)
0.0
(0.0)
0.0
(0.0)
0.0
(0.0)
0.0
(0.0)
0.0
(0.0)
0.1
(0.25)
0.5
(1.3)
4.3
(11)
26.8
(67.85)
Average precipitation days (≥ 0.01 in)10.110.111.011.512.011.910.810.08.610.08.511.0125.5
Average snowy days (≥ 0.1 in)4.64.32.60.30.00.00.00.00.00.00.32.314.4
Average relative humidity (%)65.461.758.057.062.166.166.268.869.868.866.966.564.8
Average dew point °F (°C)21.7
(−5.7)
22.8
(−5.1)
28.1
(−2.2)
37.7
(3.2)
48.7
(9.3)
59.4
(15.2)
63.9
(17.7)
63.5
(17.5)
57.0
(13.9)
45.6
(7.6)
35.9
(2.2)
26.5
(−3.1)
42.7
(5.9)
Mean monthly sunshine hours 163.1169.7207.4227.2248.1262.8269.2252.5215.0201.5149.3140.12,505.9
Percent possible sunshine 54575657565859595758504856
Source 1: NOAA (sun 1961–1981) [16] [17] [18]
Source 2: PRISM Climate Group (humidity and dew point) [19]

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The climate of Pennsylvania is diverse due to the multitude of geographic features found within the state. Straddling two major climate zones, the southeastern corner of Pennsylvania has the warmest climate. A portion of Greater Philadelphia lies at the southernmost tip of the humid continental climate zone, with the city proper being in the humid subtropical climate zone. Still, Philadelphia features colder, snowier winters than most locations with a humid subtropical climate. Moving west toward the mountainous interior of the state, the climate becomes markedly colder, the number of cloudy days increases, and winter snowfall amounts are greater.

<span class="mw-page-title-main">Climate of South Carolina</span>

South Carolina has a humid subtropical climate, with hot summers throughout most of the state. But, an exception does occur in the Blue Ridge Mountains, as outlier pockets of an Oceanic Climate do exist. Mild winters predominate in the eastern and southern part of the state, but cool to occasionally cold winters are the standard in the northwestern area of the state, especially areas at or above 600 feet in elevation. On average, between 40 and 80 inches of precipitation falls annually across the state, potentially even in excess of 100 inches in portions of the Appalachian temperate rainforest. Tropical cyclones, and afternoon thunderstorms due to hot and humid conditions, contribute to precipitation during the summer and sometimes fall months, while extratropical cyclones contribute to precipitation during the fall, winter, and spring months. The coast experiences nearly all of their tropical weather impacts from storms coming directly from the Atlantic coast. The northwestern area of the state can receive impacts from both Atlantic basin storms moving westward from the coast and also occasionally very heavy rainfall and flooding from storms originating from the Gulf of Mexico that move inland towards the northeast after making landfall from the Florida Panhandle to Louisiana.

<span class="mw-page-title-main">Geography of Connecticut</span>

The U.S. state of Connecticut is bordered on the south by Long Island Sound, on the west by New York, on the north by Massachusetts, and on the east by Rhode Island. The state capital and fourth largest city is Hartford, and other major cities and towns include Bridgeport, New Haven, Stamford, Waterbury, Norwalk, Danbury, New Britain, Greenwich, and Bristol. There are 169 incorporated towns in Connecticut, with cities and villages included within some towns.

<span class="mw-page-title-main">Climate of New York (state)</span>

The climate of New York (state) is generally humid continental, while the extreme southeastern portion of the state lies in the warmer humid subtropical climate zone. Winter temperatures average below freezing during January and February in much of the state of New York, but several degrees above freezing along the Atlantic coastline, including New York City.

<span class="mw-page-title-main">Climate of Massachusetts</span>

The climate of Massachusetts is mainly a humid continental climate, with hot, humid summers, cold, snowy winters and abundant precipitation. Massachusetts is a state located in the New England region of the northeastern United States. Most of its population of 7 million live in the Boston metropolitan area. The eastern half of this relatively small state is mostly urban and suburban. Massachusetts is the most populous of the six New England states and ranks third in the nation by population density and fourth by GDP per capita. Massachusetts receives about 43 inches or 1,090 millimetres of rain annually, fairly evenly distributed throughout the years, slightly wetter during the winter. Summers are warm with average high temperatures in July above 80 °F or 26.7 °C and overnight lows above 60 °F or 15.6 °C common throughout the state. Winters are cold, but generally less extreme on the coast with high temperatures in the winter averaging above freezing even in January, although areas further inland are much colder. The state does have extreme temperatures from time to time with 100 °F or 37.8 °C in the summer and temperatures below 0 °F or −17.8 °C in the winter not being unusual.

<span class="mw-page-title-main">Climate of Los Angeles</span>

The climate of Los Angeles is mild to hot year-round, and mostly dry. It is classified as borderline Mediterranean and semi-arid. The city is characterized by seasonal changes in rainfall—with a dry summer and a winter rainy season. Under the Köppen climate classification, the coastal areas are classified as BSh and Csb, while the inland areas are classified as BSh and Csa.

<span class="mw-page-title-main">Climate of Miami</span>

The climate of Miami is classified as having a tropical monsoon climate with hot and humid summers; short, warm winters; and a marked drier season in the winter. Its sea-level elevation, coastal location, position just above the Tropic of Cancer, and proximity to the Gulf Stream shape its climate.

<span class="mw-page-title-main">Climate of New England</span>

The climate of New England varies greatly across its 500-mile (800 km) span from northern Maine to southern Connecticut.

<span class="mw-page-title-main">2014–15 North American winter</span> Winter season in North America

The 2014–15 North American winter was frigid and prolifically wintry, especially across the eastern half of North America in the months of January–March. The season began early, with many places in North America experiencing their first wintry weather during mid-November. A period of below-average temperatures affected much of the contiguous United States, and several records were broken. An early trace of snowfall was recorded in Arkansas. There were greater accumulations of snow across parts of Oklahoma as well. A quasi-permanent phenomenon referred to as the polar vortex may have been partly responsible for the cold weather. Temperatures in much of the United States dropped 15 to 35 °F below average by November 19, following a southward "dip" of the polar vortex into the eastern two-thirds of the country. The effects of this dip were widespread, bringing about temperatures as low as 28 °F (−2 °C) in Pensacola, Florida. Following a significant snowstorm there, Buffalo, New York received several feet of snow from November 17–21. In addition, significant winter weather occurred throughout the season, including a major blizzard that struck the Northeastern United States at the end of January, another blizzard that affected much of the Northern United States days later in early February, and several significant snow events paired with very frigid temperatures for much of February.

<span class="mw-page-title-main">Climate of Seattle</span>

The climate of Seattle is temperate, classified in the warm-summer (in contrast to hot-summer) subtype of the Mediterranean zone by the most common climate classification although some sources put the city in the oceanic zone. It has cool, wet winters and warm, dry summers, covering characteristics of both. The climate is sometimes characterized as a "modified Mediterranean" climate because it is cooler and wetter than a "true" Mediterranean climate, but shares the characteristic dry summer and the associated reliance upon cooler-season precipitation. The city is part of USDA hardiness zone 9a, with surrounding pockets falling under 8b.

References

  1. "Koppen Climate Classification for the Conterminous United States". Data.gov. U.S. General Services Administration. Archived from the original on 8 January 2018. Retrieved 7 January 2018.
  2. Harris, Amy. "The Average Climate of New Jersey". USA Today. Retrieved 7 January 2018.
  3. 1 2 Bruce A. Scruton (August 30, 2021). "New Jersey tops list of states warming up the fastest". New Jersey Herald. Retrieved December 20, 2022.
  4. 1 2 3 "New Jersey Climate Overview". Rutgers, The State University of New Jersey. Retrieved 7 January 2018.
  5. 1 2 3 "State Climate Extremes Committee (SCEC) Records". The National Weather Service. Retrieved 7 January 2018.
  6. Solecki, William D.; et al. (2005). "Mitigation of the heat island effect in urban New Jersey". Environmental Hazards. 6 (1). Informa UK Limited: 39–49. doi:10.1016/j.hazards.2004.12.002. ISSN   1747-7891.
  7. Threadex
  8. "NowData – NOAA Online Weather Data". National Oceanic and Atmospheric Administration. Retrieved August 11, 2021.
  9. "Station: ATLANTIC CITY INTL AP, NJ". U.S. Climate Normals 2020: U.S. Monthly Climate Normals (1991–2020). National Oceanic and Atmospheric Administration. Archived from the original on 2024-06-08. Retrieved August 11, 2021.
  10. "WMO Climate Normals for ATLANTIC CITY, NJ 1961–1990". National Oceanic and Atmospheric Administration. Archived from the original on 2024-06-08. Retrieved August 11, 2021.
  11. "Historical UV Index Data - Atlantic City, NJ". UV Index Today. Retrieved April 22, 2023.
  12. "NowData – NOAA Online Weather Data". National Oceanic and Atmospheric Administration. Retrieved August 10, 2021.
  13. "Station: Newark INTL AP, NJ". U.S. Climate Normals 2020: U.S. Monthly Climate Normals (1991–2020). National Oceanic and Atmospheric Administration. Retrieved August 10, 2021.
  14. "Newark Climate Normals 1961-1990". National Oceanic and Atmospheric Administration . Retrieved August 21, 2023.
  15. 1 2 "Newark, New Jersey, USA - Monthly weather forecast and Climate data". Weather Atlas. Retrieved July 4, 2019.
  16. "NowData – NOAA Online Weather Data". National Oceanic and Atmospheric Administration. Retrieved August 12, 2021.
  17. "Station: Trenton Mercer CO AP, NJ". U.S. Climate Normals 2020: U.S. Monthly Climate Normals (1991–2020). National Oceanic and Atmospheric Administration. Retrieved August 12, 2021.
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Notes

  1. Mean monthly maxima and minima (i.e. the highest and lowest temperature readings during an entire month or year) calculated based on data at said location from 1991 to 2020.
  2. The official climatology station for Atlantic City was at the Weather Bureau Office downtown from January 1874 to 15 June 1958 and Atlantic City Int'l (ACY) in Egg Harbor Township since 16 June 1958. [7] ACY's location in the Pine Barrens and distance away from the coast and urban heat island of downtown Atlantic City largely account for its markedly colder temperatures at night as compared to downtown; for example, from 1959 to 2013, there were 50 days with a low of 0 °F (−18 °C) or lower, while in the same period, the corresponding number of days at downtown was 2. The National Weather Service ceased regular snowfall observations at downtown after the winter of 1958–59.