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Monthly climate in Somerset, Pennsylvania, United States

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Somerset features a oceanic climate (Cfb).Temperatures typically range between -2 °C (28 °F) and 22 °C (71 °F) through the year, but rarely can drop to -25 °C (-13 °F) or can rise to as high as 32 °C (89 °F).The average annual precipitation amounts to about 1434 mm (56.5 inches) and receives 173 rainy days on the 1 mm (0.04 inches) threshold annually.Somerset enjoys an average of 2798 hours of sunshine throughout the year, and daylight varies from 9 hours 21 minutes to 14 hours 57 minutes per day.

Monthly average temperatures in Somerset, Pennsylvania, United States §

The warmest months in Somerset are June, July and August, with daily mean temperatures ranging from 19 to 22 °C (67 - 71 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from -2 to 1 °C (28 - 33 °F) throughout the day. On average each year, Somerset experiences 54 days above 25 °C (77.0 °F) and 108 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Somerset, 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 18°C
(65°F)		 23°C
(73°F)		 20°C
(69°F)		 27°C
(80°F)		 28°C
(83°F)		 30°C
(86°F)		 31°C
(88°F)		 32°C
(89°F)		 30°C
(86°F)		 29°C
(84°F)		 23°C
(73°F)		 18°C
(65°F)
Mean maximum 14°C
(58°F)		 17°C
(63°F)		 19°C
(67°F)		 25°C
(77°F)		 27°C
(82°F)		 29°C
(85°F)		 30°C
(86°F)		 30°C
(86°F)		 28°C
(84°F)		 26°C
(80°F)		 20°C
(68°F)		 15°C
(59°F)
Average high 2°C
(35°F)		 5°C
(41°F)		 8°C
(47°F)		 14°C
(57°F)		 19°C
(67°F)		 23°C
(74°F)		 26°C
(80°F)		 25°C
(78°F)		 22°C
(73°F)		 17°C
(62°F)		 8°C
(47°F)		 4°C
(40°F)
Daily mean -2°C
(28°F)		 0°C
(33°F)		 3°C
(38°F)		 9°C
(48°F)		 15°C
(59°F)		 19°C
(67°F)		 22°C
(71°F)		 21°C
(70°F)		 18°C
(64°F)		 12°C
(54°F)		 4°C
(39°F)		 1°C
(33°F)
Average low -6°C
(21°F)		 -4°C
(25°F)		 -1°C
(30°F)		 4°C
(40°F)		 10°C
(51°F)		 15°C
(58°F)		 17°C
(64°F)		 17°C
(62°F)		 13°C
(56°F)		 8°C
(47°F)		 -0°C
(32°F)		 -3°C
(27°F)
Mean minimum -19°C
(-2°F)		 -17°C
(1°F)		 -12°C
(10°F)		 -4°C
(24°F)		 0°C
(33°F)		 7°C
(45°F)		 12°C
(54°F)		 11°C
(51°F)		 6°C
(43°F)		 -1°C
(31°F)		 -8°C
(17°F)		 -13°C
(9°F)
Minimum -25°C
(-13°F)		 -25°C
(-12°F)		 -16°C
(4°F)		 -7°C
(19°F)		 -4°C
(25°F)		 3°C
(38°F)		 10°C
(51°F)		 9°C
(48°F)		 2°C
(35°F)		 -3°C
(27°F)		 -11°C
(13°F)		 -19°C
(-3°F)

Compare climate in Somerset with other places

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

Monthly average precipitation in Somerset, Pennsylvania, United States §

Somerset usually has the most precipitation in April, May and June, with an average of 16 rainy days and 146 mm (5.8 inches) of precipitation per month.The driest months in Somerset are January, August and November. On average, 93 mm (3.6 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Somerset, 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) 83 (3.3) 128 (5.1) 112 (4.4) 130 (5.1) 152 (6.0) 157 (6.2) 119 (4.7) 112 (4.4) 129 (5.1) 115 (4.5) 83 (3.3) 113 (4.4)
Average precipitation days (≥ 1 mm) 14 16 14 16 18 16 15 16 11 13 11 13

Monthly sunshine hours in Somerset, Pennsylvania, United States §

The sunniest months in Somerset are June, July and August, when the sun shines an average of 10 hours 23 minutes a day.Least sunny months in Somerset: January, February and December receive an average of 4 hours 27 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Somerset, 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 112 142 231 238 270 301 340 313 279 231 183 151
Mean daily daylight hours 9h 40m 10h 41m 11h 58m 13h 17m 14h 24m 14h 57m 14h 39m 13h 39m 12h 24m 11h 5m 9h 56m 9h 21m

Solar UV radiation in Somerset, Pennsylvania, United States §

Somerset 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, February and December are in the Moderate exposure category. In these months, the maximum values of the UV index do not exceed 5. For more detailed information, check out our hourly Somerset UV Index data.

Average daily maximum UV levels by month for Somerset, 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 7 9 10 10 10 10 8 7 5 3