nomadseason

Monthly climate in Port Royal, Pennsylvania, United States

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Port Royal features a humid continental climate (Dfb).Temperatures typically range between -1 °C (31 °F) and 24 °C (76 °F) through the year, but rarely can drop to -22 °C (-8 °F) or can rise to as high as 36 °C (97 °F).The average annual precipitation amounts to about 1228 mm (48.4 inches) and receives 136 rainy days on the 1 mm (0.04 inches) threshold annually.Port Royal enjoys an average of 2828 hours of sunshine throughout the year, and daylight varies from 9 hours 18 minutes to 15 hours 1 minutes per day.

Monthly average temperatures in Port Royal, Pennsylvania, United States §

The warmest months in Port Royal are June, July and August, with daily mean temperatures ranging from 21 to 24 °C (71 - 76 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from -1 to 2 °C (31 - 36 °F) throughout the day. On average each year, Port Royal experiences 89 days above 25 °C (77.0 °F) and 89 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Port Royal, Pennsylvania, 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 19°C
(66°F)		 25°C
(77°F)		 23°C
(74°F)		 28°C
(84°F)		 32°C
(90°F)		 34°C
(94°F)		 36°C
(97°F)		 35°C
(95°F)		 33°C
(92°F)		 32°C
(90°F)		 24°C
(75°F)		 18°C
(65°F)
Mean maximum 14°C
(57°F)		 18°C
(65°F)		 21°C
(71°F)		 26°C
(80°F)		 31°C
(88°F)		 33°C
(91°F)		 34°C
(94°F)		 34°C
(93°F)		 32°C
(89°F)		 28°C
(83°F)		 21°C
(70°F)		 14°C
(58°F)
Average high 3°C
(38°F)		 6°C
(42°F)		 10°C
(50°F)		 16°C
(61°F)		 22°C
(71°F)		 26°C
(80°F)		 30°C
(86°F)		 28°C
(83°F)		 25°C
(77°F)		 19°C
(66°F)		 10°C
(50°F)		 6°C
(42°F)
Daily mean -1°C
(31°F)		 1°C
(34°F)		 5°C
(41°F)		 11°C
(51°F)		 17°C
(62°F)		 21°C
(71°F)		 24°C
(76°F)		 23°C
(74°F)		 20°C
(68°F)		 14°C
(57°F)		 6°C
(42°F)		 2°C
(36°F)
Average low -4°C
(25°F)		 -3°C
(27°F)		 0°C
(32°F)		 6°C
(43°F)		 12°C
(53°F)		 16°C
(61°F)		 20°C
(67°F)		 19°C
(66°F)		 15°C
(59°F)		 9°C
(49°F)		 1°C
(34°F)		 -1°C
(30°F)
Mean minimum -15°C
(5°F)		 -15°C
(5°F)		 -9°C
(16°F)		 -2°C
(29°F)		 3°C
(37°F)		 10°C
(50°F)		 14°C
(58°F)		 13°C
(56°F)		 8°C
(46°F)		 1°C
(35°F)		 -6°C
(21°F)		 -10°C
(15°F)
Minimum -22°C
(-7°F)		 -22°C
(-8°F)		 -18°C
(-1°F)		 -4°C
(26°F)		 -1°C
(30°F)		 6°C
(44°F)		 12°C
(54°F)		 13°C
(55°F)		 3°C
(38°F)		 -0°C
(32°F)		 -10°C
(14°F)		 -13°C
(8°F)

Compare climate in Port Royal with other places

Compare temperature, precipitation, sunshine, UV index in Port Royal, Pennsylvania, United States with other places around the world.

Monthly average precipitation in Port Royal, Pennsylvania, United States §

Port Royal usually has the most precipitation in May, July and September, with an average of 12 rainy days and 123 mm (4.9 inches) of precipitation per month.The driest months in Port Royal are January, November and December. On average, 80 mm (3.2 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Port Royal, Pennsylvania, 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 (2.6) 104 (4.1) 94 (3.7) 102 (4.0) 120 (4.7) 101 (4.0) 121 (4.8) 102 (4.0) 129 (5.1) 113 (4.5) 85 (3.3) 91 (3.6)
Average precipitation days (≥ 1 mm) 8 12 11 13 14 12 12 12 10 12 9 11

Monthly sunshine hours in Port Royal, Pennsylvania, United States §

The sunniest months in Port Royal are June, July and August, when the sun shines an average of 10 hours 23 minutes a day.Least sunny months in Port Royal: January, February and December receive an average of 4 hours 58 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Port Royal, Pennsylvania, 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 127 159 234 238 254 310 337 308 268 222 202 165
Mean daily daylight hours 9h 37m 10h 39m 11h 58m 13h 19m 14h 27m 15h 1m 14h 42m 13h 41m 12h 24m 11h 4m 9h 54m 9h 18m

Solar UV radiation in Port Royal, Pennsylvania, United States §

Port Royal 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 Port Royal UV Index data.

Average daily maximum UV levels by month for Port Royal, Pennsylvania, 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 9 8 6 4 2