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Monthly climate in Watchung, New Jersey, United States

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Watchung features a humid subtropical climate (Cfa).Temperatures typically range between 0 °C (33 °F) and 25 °C (77 °F) through the year, but rarely can drop to -18 °C (0 °F) or can rise to as high as 36 °C (97 °F).The average annual precipitation amounts to about 1354 mm (53.3 inches) and receives 134 rainy days on the 1 mm (0.04 inches) threshold annually.Watchung enjoys an average of 2921 hours of sunshine throughout the year, and daylight varies from 9 hours 17 minutes to 15 hours 1 minutes per day.

Monthly average temperatures in Watchung, New Jersey, United States §

The warmest months in Watchung are June, July and August, with daily mean temperatures ranging from 21 to 25 °C (71 - 77 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 0 to 3 °C (33 - 37 °F) throughout the day. On average each year, Watchung experiences 84 days above 25 °C (77.0 °F) and 82 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Watchung, New Jersey, United States.Generated using Copernicus Climate Change Service information.Data for period from January 2017 to June 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Maximum 18°C
(65°F)		 25°C
(77°F)		 26°C
(79°F)		 29°C
(85°F)		 33°C
(92°F)		 35°C
(96°F)		 36°C
(97°F)		 35°C
(95°F)		 35°C
(95°F)		 34°C
(93°F)		 24°C
(76°F)		 18°C
(64°F)
Mean maximum 15°C
(59°F)		 19°C
(66°F)		 22°C
(71°F)		 26°C
(79°F)		 31°C
(89°F)		 33°C
(92°F)		 35°C
(96°F)		 34°C
(93°F)		 32°C
(90°F)		 28°C
(82°F)		 22°C
(72°F)		 16°C
(61°F)
Average high 4°C
(39°F)		 6°C
(44°F)		 10°C
(49°F)		 15°C
(60°F)		 21°C
(70°F)		 26°C
(80°F)		 30°C
(86°F)		 28°C
(83°F)		 25°C
(77°F)		 19°C
(67°F)		 11°C
(53°F)		 6°C
(43°F)
Daily mean 0°C
(33°F)		 2°C
(36°F)		 5°C
(41°F)		 11°C
(52°F)		 16°C
(62°F)		 21°C
(71°F)		 25°C
(77°F)		 24°C
(75°F)		 20°C
(69°F)		 15°C
(59°F)		 7°C
(44°F)		 3°C
(37°F)
Average low -3°C
(26°F)		 -2°C
(29°F)		 1°C
(33°F)		 6°C
(43°F)		 12°C
(53°F)		 17°C
(62°F)		 20°C
(69°F)		 20°C
(68°F)		 16°C
(61°F)		 11°C
(51°F)		 2°C
(36°F)		 -1°C
(30°F)
Mean minimum -13°C
(8°F)		 -13°C
(9°F)		 -8°C
(17°F)		 -1°C
(31°F)		 4°C
(40°F)		 11°C
(52°F)		 15°C
(60°F)		 14°C
(58°F)		 9°C
(48°F)		 2°C
(37°F)		 -7°C
(20°F)		 -10°C
(15°F)
Minimum -17°C
(2°F)		 -18°C
(0°F)		 -16°C
(4°F)		 -3°C
(27°F)		 1°C
(33°F)		 9°C
(48°F)		 13°C
(55°F)		 13°C
(56°F)		 6°C
(42°F)		 0°C
(33°F)		 -12°C
(10°F)		 -13°C
(9°F)

Compare climate in Watchung with other places

Compare temperature, precipitation, sunshine, UV index in Watchung, New Jersey, United States with other places around the world.

Monthly average precipitation in Watchung, New Jersey, United States §

Watchung usually has the most precipitation in July, August and October, with an average of 12 rainy days and 140 mm (5.5 inches) of precipitation per month.The driest months in Watchung are January, September and November. On average, 86 mm (3.4 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Watchung, New Jersey, United States.Generated using Copernicus Climate Change Service information.Data for period from January 2017 to January 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Average precipitation mm (inches) 70 (2.7) 104 (4.1) 103 (4.1) 116 (4.6) 135 (5.3) 106 (4.2) 142 (5.6) 136 (5.4) 101 (4.0) 142 (5.6) 86 (3.4) 113 (4.4)
Average precipitation days (≥ 1 mm) 8 11 10 12 13 13 14 14 10 10 9 10

Monthly sunshine hours in Watchung, New Jersey, United States §

The sunniest months in Watchung are June, July and August, when the sun shines an average of 10 hours 26 minutes a day.Least sunny months in Watchung: January, February and December receive an average of 5 hours 28 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Watchung, New Jersey, United States.Generated using Copernicus Atmosphere Monitoring Service information.Data for period from January 2017 to January 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Mean monthly sunshine hours 146 176 247 240 272 311 340 309 272 220 209 175
Mean daily daylight hours 9h 37m 10h 39m 11h 58m 13h 19m 14h 27m 15h 1m 14h 43m 13h 42m 12h 24m 11h 4m 9h 53m 9h 17m

Solar UV radiation in Watchung, New Jersey, United States §

Watchung experiences the highest level of ultraviolet (UV) radiation in May, June and July, when the maximum UV index can reach values of 10 - 10, which corresponds to the Very High category of sun exposure.January, November and December are in the Low / Moderate exposure category. In these months, the maximum values of the UV index do not exceed 4. For more detailed information, check out our hourly Watchung UV Index data.

Average daily maximum UV levels by month for Watchung, New Jersey, United States.Generated using Copernicus Atmosphere Monitoring Service information.Data for period from January 2022 to January 2023.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
UV Index (month maximum) 3 5 6 8 10 10 10 9 8 6 4 2