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Monthly climate in Back Mountain, Pennsylvania, United States

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Back Mountain features a humid continental climate (Dfb).Temperatures typically range between -2 °C (29 °F) and 23 °C (74 °F) through the year, but rarely can drop to -24 °C (-11 °F) or can rise to as high as 34 °C (94 °F).The average annual precipitation amounts to about 1200 mm (47.2 inches) and receives 140 rainy days on the 1 mm (0.04 inches) threshold annually.Back Mountain enjoys an average of 2767 hours of sunshine throughout the year, and daylight varies from 9 hours 14 minutes to 15 hours 4 minutes per day.

Monthly average temperatures in Back Mountain, Pennsylvania, United States §

The warmest months in Back Mountain are June, July and August, with daily mean temperatures ranging from 20 to 23 °C (68 - 74 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from -2 to 1 °C (29 - 34 °F) throughout the day. On average each year, Back Mountain experiences 66 days above 25 °C (77.0 °F) and 101 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Back Mountain, 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 17°C
(63°F)		 22°C
(73°F)		 22°C
(72°F)		 27°C
(80°F)		 31°C
(88°F)		 34°C
(93°F)		 34°C
(94°F)		 32°C
(90°F)		 31°C
(89°F)		 29°C
(84°F)		 23°C
(73°F)		 16°C
(61°F)
Mean maximum 12°C
(54°F)		 16°C
(61°F)		 19°C
(67°F)		 24°C
(75°F)		 30°C
(85°F)		 31°C
(89°F)		 33°C
(92°F)		 31°C
(89°F)		 30°C
(86°F)		 26°C
(79°F)		 20°C
(68°F)		 14°C
(57°F)
Average high 1°C
(35°F)		 4°C
(39°F)		 8°C
(46°F)		 14°C
(58°F)		 20°C
(68°F)		 25°C
(77°F)		 28°C
(83°F)		 27°C
(80°F)		 23°C
(74°F)		 17°C
(63°F)		 9°C
(48°F)		 4°C
(39°F)
Daily mean -2°C
(29°F)		 -0°C
(32°F)		 3°C
(38°F)		 9°C
(49°F)		 15°C
(60°F)		 20°C
(68°F)		 23°C
(74°F)		 22°C
(72°F)		 18°C
(65°F)		 13°C
(55°F)		 5°C
(41°F)		 1°C
(34°F)
Average low -6°C
(22°F)		 -4°C
(25°F)		 -2°C
(30°F)		 4°C
(40°F)		 10°C
(51°F)		 15°C
(59°F)		 18°C
(65°F)		 18°C
(64°F)		 14°C
(57°F)		 9°C
(48°F)		 1°C
(33°F)		 -2°C
(28°F)
Mean minimum -18°C
(0°F)		 -17°C
(2°F)		 -11°C
(12°F)		 -3°C
(28°F)		 2°C
(35°F)		 9°C
(49°F)		 13°C
(56°F)		 12°C
(53°F)		 6°C
(44°F)		 1°C
(34°F)		 -8°C
(18°F)		 -12°C
(10°F)
Minimum -24°C
(-10°F)		 -24°C
(-11°F)		 -19°C
(-2°F)		 -5°C
(24°F)		 -2°C
(29°F)		 6°C
(42°F)		 12°C
(53°F)		 10°C
(50°F)		 2°C
(36°F)		 0°C
(33°F)		 -15°C
(6°F)		 -17°C
(2°F)

Compare climate in Back Mountain with other places

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

Monthly average precipitation in Back Mountain, Pennsylvania, United States §

Back Mountain usually has the most precipitation in May, July and August, with an average of 13 rainy days and 120 mm (4.7 inches) of precipitation per month.The driest months in Back Mountain are January, November and December. On average, 81 mm (3.2 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Back Mountain, 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) 71 (2.8) 96 (3.8) 88 (3.5) 102 (4.0) 122 (4.8) 95 (3.7) 118 (4.6) 121 (4.8) 102 (4.0) 114 (4.5) 87 (3.4) 83 (3.3)
Average precipitation days (≥ 1 mm) 9 12 11 14 14 12 13 13 9 11 10 12

Monthly sunshine hours in Back Mountain, Pennsylvania, United States §

The sunniest months in Back Mountain are June, July and August, when the sun shines an average of 10 hours 17 minutes a day.Least sunny months in Back Mountain: January, February and December receive an average of 4 hours 47 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Back Mountain, 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 126 159 224 231 263 308 330 306 272 209 183 150
Mean daily daylight hours 9h 34m 10h 38m 11h 58m 13h 20m 14h 30m 15h 4m 14h 45m 13h 43m 12h 24m 11h 2m 9h 51m 9h 14m

Solar UV radiation in Back Mountain, Pennsylvania, United States §

Back Mountain 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 Back Mountain UV Index data.

Average daily maximum UV levels by month for Back Mountain, 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