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Monthly climate in Erma, New Jersey, United States

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Erma features a humid subtropical climate (Cfa).Temperatures typically range between 3 °C (38 °F) and 25 °C (78 °F) through the year, but rarely can drop to -12 °C (11 °F) or can rise to as high as 32 °C (90 °F).The average annual precipitation amounts to about 1292 mm (50.9 inches) and receives 125 rainy days on the 1 mm (0.04 inches) threshold annually.Erma enjoys an average of 3151 hours of sunshine throughout the year, and daylight varies from 9 hours 28 minutes to 14 hours 50 minutes per day.

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

The warmest months in Erma are July, August and September, with daily mean temperatures ranging from 22 to 25 °C (72 - 78 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 3 to 6 °C (38 - 44 °F) throughout the day. On average each year, Erma experiences 57 days above 25 °C (77.0 °F) and 24 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Erma, 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 16°C
(62°F)		 15°C
(60°F)		 20°C
(68°F)		 25°C
(78°F)		 27°C
(81°F)		 30°C
(85°F)		 32°C
(90°F)		 30°C
(86°F)		 29°C
(85°F)		 28°C
(83°F)		 22°C
(71°F)		 17°C
(64°F)
Mean maximum 14°C
(57°F)		 13°C
(55°F)		 17°C
(63°F)		 20°C
(69°F)		 25°C
(78°F)		 28°C
(82°F)		 30°C
(87°F)		 29°C
(85°F)		 28°C
(82°F)		 25°C
(77°F)		 20°C
(68°F)		 15°C
(60°F)
Average high 6°C
(42°F)		 7°C
(45°F)		 9°C
(48°F)		 14°C
(57°F)		 18°C
(65°F)		 23°C
(75°F)		 27°C
(81°F)		 26°C
(80°F)		 24°C
(75°F)		 20°C
(68°F)		 13°C
(55°F)		 8°C
(48°F)
Daily mean 3°C
(38°F)		 5°C
(40°F)		 7°C
(44°F)		 11°C
(53°F)		 16°C
(61°F)		 22°C
(71°F)		 25°C
(78°F)		 25°C
(77°F)		 22°C
(72°F)		 18°C
(64°F)		 10°C
(51°F)		 6°C
(44°F)
Average low 1°C
(35°F)		 2°C
(37°F)		 5°C
(41°F)		 9°C
(49°F)		 14°C
(58°F)		 20°C
(68°F)		 24°C
(75°F)		 23°C
(75°F)		 21°C
(70°F)		 16°C
(61°F)		 8°C
(47°F)		 4°C
(40°F)
Mean minimum -7°C
(20°F)		 -5°C
(23°F)		 -2°C
(29°F)		 4°C
(39°F)		 9°C
(48°F)		 16°C
(60°F)		 20°C
(69°F)		 20°C
(68°F)		 16°C
(61°F)		 10°C
(50°F)		 0°C
(33°F)		 -2°C
(28°F)
Minimum -12°C
(11°F)		 -11°C
(12°F)		 -4°C
(24°F)		 2°C
(35°F)		 5°C
(41°F)		 13°C
(55°F)		 19°C
(67°F)		 18°C
(65°F)		 13°C
(56°F)		 7°C
(45°F)		 -3°C
(27°F)		 -7°C
(20°F)

Compare climate in Erma with other places

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

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

Erma usually has the most precipitation in May, July and October, with an average of 10 rainy days and 132 mm (5.2 inches) of precipitation per month.The driest months in Erma are January, June and November. On average, 80 mm (3.1 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Erma, 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) 74 (2.9) 113 (4.4) 111 (4.4) 94 (3.7) 125 (4.9) 77 (3.0) 129 (5.1) 115 (4.5) 107 (4.2) 142 (5.6) 90 (3.5) 118 (4.6)
Average precipitation days (≥ 1 mm) 9 12 10 11 12 9 10 14 10 9 8 11

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

The sunniest months in Erma are June, July and August, when the sun shines an average of 11 hours 10 minutes a day.Least sunny months in Erma: January, February and December receive an average of 5 hours 47 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Erma, 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 156 182 259 272 305 339 360 328 285 244 228 188
Mean daily daylight hours 9h 46m 10h 44m 11h 58m 13h 14m 14h 18m 14h 50m 14h 33m 13h 36m 12h 23m 11h 7m 10h 1m 9h 28m

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

Erma experiences the highest level of ultraviolet (UV) radiation in May, July and August, 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 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 Erma UV Index data.

Average daily maximum UV levels by month for Erma, 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 9 10 10 10 10 8 7 4 3