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Monthly climate in Summerville, Pennsylvania, United States

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Summerville features a humid continental climate (Dfb).Temperatures typically range between -2 °C (29 °F) and 23 °C (73 °F) through the year, but rarely can drop to -26 °C (-15 °F) or can rise to as high as 36 °C (97 °F).The average annual precipitation amounts to about 1459 mm (57.4 inches) and receives 172 rainy days on the 1 mm (0.04 inches) threshold annually.Summerville enjoys an average of 2633 hours of sunshine throughout the year, and daylight varies from 9 hours 15 minutes to 15 hours 3 minutes per day.

Monthly average temperatures in Summerville, Pennsylvania, United States §

The warmest months in Summerville are June, July and August, with daily mean temperatures ranging from 20 to 23 °C (68 - 73 °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, Summerville experiences 70 days above 25 °C (77.0 °F) and 104 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Summerville, 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 20°C
(68°F)		 22°C
(73°F)		 22°C
(72°F)		 28°C
(82°F)		 30°C
(87°F)		 33°C
(91°F)		 36°C
(97°F)		 34°C
(94°F)		 32°C
(89°F)		 29°C
(84°F)		 24°C
(76°F)		 17°C
(63°F)
Mean maximum 14°C
(58°F)		 17°C
(63°F)		 20°C
(69°F)		 25°C
(77°F)		 30°C
(86°F)		 31°C
(88°F)		 32°C
(89°F)		 31°C
(89°F)		 30°C
(86°F)		 27°C
(80°F)		 19°C
(67°F)		 14°C
(58°F)
Average high 2°C
(35°F)		 4°C
(40°F)		 9°C
(48°F)		 14°C
(58°F)		 20°C
(69°F)		 25°C
(77°F)		 27°C
(82°F)		 27°C
(80°F)		 23°C
(74°F)		 17°C
(63°F)		 8°C
(47°F)		 4°C
(40°F)
Daily mean -2°C
(29°F)		 0°C
(32°F)		 4°C
(39°F)		 9°C
(49°F)		 15°C
(60°F)		 20°C
(68°F)		 23°C
(73°F)		 22°C
(71°F)		 18°C
(65°F)		 13°C
(55°F)		 4°C
(40°F)		 1°C
(34°F)
Average low -6°C
(22°F)		 -4°C
(25°F)		 -1°C
(31°F)		 4°C
(40°F)		 11°C
(51°F)		 15°C
(59°F)		 18°C
(64°F)		 17°C
(63°F)		 13°C
(57°F)		 8°C
(47°F)		 0°C
(33°F)		 -2°C
(28°F)
Mean minimum -19°C
(-1°F)		 -17°C
(2°F)		 -11°C
(12°F)		 -4°C
(25°F)		 0°C
(33°F)		 8°C
(46°F)		 11°C
(52°F)		 11°C
(51°F)		 6°C
(43°F)		 -1°C
(31°F)		 -8°C
(18°F)		 -11°C
(13°F)
Minimum -26°C
(-15°F)		 -24°C
(-12°F)		 -14°C
(8°F)		 -6°C
(22°F)		 -2°C
(28°F)		 3°C
(38°F)		 10°C
(50°F)		 9°C
(48°F)		 2°C
(36°F)		 -3°C
(28°F)		 -11°C
(12°F)		 -15°C
(6°F)

Compare climate in Summerville with other places

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

Monthly average precipitation in Summerville, Pennsylvania, United States §

Summerville usually has the most precipitation in May, June and July, with an average of 16 rainy days and 144 mm (5.7 inches) of precipitation per month.The driest months in Summerville are January, August and November. On average, 101 mm (4.0 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Summerville, 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) 100 (3.9) 123 (4.8) 106 (4.2) 135 (5.3) 156 (6.1) 139 (5.5) 137 (5.4) 105 (4.1) 125 (4.9) 128 (5.0) 100 (3.9) 106 (4.2)
Average precipitation days (≥ 1 mm) 13 16 15 15 16 15 17 15 11 14 12 13

Monthly sunshine hours in Summerville, Pennsylvania, United States §

The sunniest months in Summerville are June, July and August, when the sun shines an average of 10 hours 14 minutes a day.Least sunny months in Summerville: January, February and December receive an average of 3 hours 49 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Summerville, 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 96 131 209 234 261 303 326 312 273 211 153 120
Mean daily daylight hours 9h 35m 10h 38m 11h 58m 13h 20m 14h 29m 15h 3m 14h 44m 13h 43m 12h 24m 11h 3m 9h 52m 9h 15m

Solar UV radiation in Summerville, Pennsylvania, United States §

Summerville 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 Summerville UV Index data.

Average daily maximum UV levels by month for Summerville, 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