nomadseason

Monthly climate in Stonybrook, Pennsylvania, United States

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Stonybrook features a humid subtropical climate (Cfa).Temperatures typically range between 1 °C (35 °F) and 26 °C (79 °F) through the year, but rarely can drop to -17 °C (2 °F) or can rise to as high as 36 °C (98 °F).The average annual precipitation amounts to about 1214 mm (47.8 inches) and receives 129 rainy days on the 1 mm (0.04 inches) threshold annually.Stonybrook enjoys an average of 2916 hours of sunshine throughout the year, and daylight varies from 9 hours 22 minutes to 14 hours 56 minutes per day.

Monthly average temperatures in Stonybrook, Pennsylvania, United States §

The warmest months in Stonybrook 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 1 to 4 °C (35 - 39 °F) throughout the day. On average each year, Stonybrook experiences 101 days above 25 °C (77.0 °F) and 70 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Stonybrook, 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
(69°F)		 27°C
(81°F)		 26°C
(79°F)		 30°C
(87°F)		 33°C
(92°F)		 35°C
(95°F)		 36°C
(98°F)		 36°C
(96°F)		 34°C
(93°F)		 34°C
(93°F)		 25°C
(76°F)		 18°C
(65°F)
Mean maximum 16°C
(61°F)		 20°C
(69°F)		 24°C
(75°F)		 28°C
(82°F)		 32°C
(90°F)		 34°C
(93°F)		 35°C
(96°F)		 34°C
(94°F)		 32°C
(90°F)		 29°C
(85°F)		 23°C
(73°F)		 16°C
(61°F)
Average high 5°C
(41°F)		 8°C
(46°F)		 11°C
(53°F)		 17°C
(64°F)		 23°C
(73°F)		 28°C
(82°F)		 31°C
(87°F)		 29°C
(85°F)		 26°C
(79°F)		 20°C
(69°F)		 12°C
(54°F)		 7°C
(45°F)
Daily mean 1°C
(35°F)		 3°C
(38°F)		 6°C
(44°F)		 12°C
(54°F)		 18°C
(64°F)		 23°C
(73°F)		 26°C
(79°F)		 24°C
(76°F)		 21°C
(70°F)		 16°C
(60°F)		 7°C
(45°F)		 4°C
(39°F)
Average low -2°C
(29°F)		 -1°C
(31°F)		 2°C
(35°F)		 7°C
(46°F)		 13°C
(56°F)		 18°C
(64°F)		 21°C
(71°F)		 20°C
(69°F)		 17°C
(62°F)		 11°C
(53°F)		 3°C
(38°F)		 -0°C
(32°F)
Mean minimum -11°C
(13°F)		 -11°C
(13°F)		 -7°C
(19°F)		 -0°C
(32°F)		 4°C
(40°F)		 12°C
(53°F)		 16°C
(62°F)		 15°C
(59°F)		 10°C
(49°F)		 4°C
(39°F)		 -5°C
(24°F)		 -8°C
(18°F)
Minimum -15°C
(5°F)		 -16°C
(3°F)		 -17°C
(2°F)		 -2°C
(28°F)		 1°C
(34°F)		 9°C
(48°F)		 15°C
(59°F)		 13°C
(57°F)		 5°C
(42°F)		 2°C
(36°F)		 -6°C
(21°F)		 -12°C
(11°F)

Compare climate in Stonybrook with other places

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

Monthly average precipitation in Stonybrook, Pennsylvania, United States §

Stonybrook usually has the most precipitation in May, July and August, with an average of 13 rainy days and 126 mm (5.0 inches) of precipitation per month.The driest months in Stonybrook are January, November and December. On average, 78 mm (3.1 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Stonybrook, 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) 60 (2.3) 100 (3.9) 96 (3.8) 100 (3.9) 125 (4.9) 96 (3.8) 129 (5.1) 123 (4.9) 109 (4.3) 101 (4.0) 85 (3.3) 90 (3.5)
Average precipitation days (≥ 1 mm) 8 11 11 11 15 12 12 14 9 10 7 9

Monthly sunshine hours in Stonybrook, Pennsylvania, United States §

The sunniest months in Stonybrook are June, July and August, when the sun shines an average of 10 hours 32 minutes a day.Least sunny months in Stonybrook: January, February and December receive an average of 5 hours 19 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Stonybrook, 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 134 171 243 243 263 313 346 309 269 226 215 178
Mean daily daylight hours 9h 41m 10h 41m 11h 58m 13h 17m 14h 23m 14h 56m 14h 38m 13h 39m 12h 24m 11h 5m 9h 57m 9h 22m

Solar UV radiation in Stonybrook, Pennsylvania, United States §

Stonybrook 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 Stonybrook UV Index data.

Average daily maximum UV levels by month for Stonybrook, 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