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Monthly climate in Pomona, New Jersey, United States

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Pomona features a humid subtropical climate (Cfa).Temperatures typically range between 3 °C (38 °F) and 26 °C (79 °F) through the year, but rarely can drop to -16 °C (4 °F) or can rise to as high as 37 °C (99 °F).The average annual precipitation amounts to about 1263 mm (49.7 inches) and receives 126 rainy days on the 1 mm (0.04 inches) threshold annually.Pomona enjoys an average of 3122 hours of sunshine throughout the year, and daylight varies from 9 hours 24 minutes to 14 hours 54 minutes per day.

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

The warmest months in Pomona are June, July and August, with daily mean temperatures ranging from 23 to 26 °C (73 - 79 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 3 to 5 °C (38 - 42 °F) throughout the day. On average each year, Pomona experiences 89 days above 25 °C (77.0 °F) and 49 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Pomona, 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 20°C
(68°F)		 23°C
(73°F)		 27°C
(81°F)		 31°C
(88°F)		 34°C
(94°F)		 34°C
(93°F)		 37°C
(99°F)		 35°C
(96°F)		 33°C
(92°F)		 35°C
(95°F)		 24°C
(75°F)		 19°C
(66°F)
Mean maximum 17°C
(63°F)		 18°C
(65°F)		 22°C
(72°F)		 26°C
(80°F)		 31°C
(88°F)		 33°C
(91°F)		 35°C
(95°F)		 33°C
(91°F)		 31°C
(88°F)		 28°C
(83°F)		 23°C
(73°F)		 17°C
(63°F)
Average high 6°C
(44°F)		 9°C
(48°F)		 11°C
(52°F)		 16°C
(61°F)		 21°C
(70°F)		 27°C
(80°F)		 30°C
(85°F)		 28°C
(83°F)		 25°C
(78°F)		 21°C
(69°F)		 13°C
(57°F)		 9°C
(48°F)
Daily mean 3°C
(38°F)		 5°C
(41°F)		 7°C
(45°F)		 12°C
(54°F)		 17°C
(63°F)		 23°C
(73°F)		 26°C
(79°F)		 25°C
(77°F)		 22°C
(72°F)		 17°C
(63°F)		 9°C
(49°F)		 5°C
(42°F)
Average low -1°C
(31°F)		 1°C
(34°F)		 3°C
(38°F)		 8°C
(47°F)		 13°C
(56°F)		 19°C
(66°F)		 23°C
(73°F)		 22°C
(72°F)		 19°C
(66°F)		 13°C
(57°F)		 5°C
(41°F)		 2°C
(35°F)
Mean minimum -11°C
(12°F)		 -8°C
(17°F)		 -4°C
(24°F)		 2°C
(35°F)		 7°C
(44°F)		 13°C
(56°F)		 18°C
(64°F)		 18°C
(64°F)		 12°C
(54°F)		 5°C
(42°F)		 -4°C
(25°F)		 -6°C
(21°F)
Minimum -16°C
(4°F)		 -14°C
(7°F)		 -9°C
(17°F)		 -1°C
(31°F)		 3°C
(37°F)		 10°C
(51°F)		 17°C
(62°F)		 17°C
(63°F)		 9°C
(49°F)		 3°C
(38°F)		 -8°C
(19°F)		 -11°C
(13°F)

Compare climate in Pomona with other places

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

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

Pomona usually has the most precipitation in July, August and October, with an average of 12 rainy days and 131 mm (5.2 inches) of precipitation per month.The driest months in Pomona are January, June and November. On average, 78 mm (3.1 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Pomona, 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) 65 (2.5) 102 (4.0) 109 (4.3) 98 (3.9) 109 (4.3) 90 (3.5) 125 (4.9) 132 (5.2) 112 (4.4) 136 (5.4) 80 (3.1) 106 (4.2)
Average precipitation days (≥ 1 mm) 8 11 10 10 12 12 12 15 11 9 7 9

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

The sunniest months in Pomona are June, July and August, when the sun shines an average of 11 hours 7 minutes a day.Least sunny months in Pomona: January, February and December receive an average of 5 hours 42 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Pomona, 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 155 181 258 263 304 335 361 327 285 243 223 182
Mean daily daylight hours 9h 43m 10h 43m 11h 58m 13h 16m 14h 21m 14h 54m 14h 36m 13h 38m 12h 23m 11h 6m 9h 59m 9h 24m

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

Pomona 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 Pomona UV Index data.

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