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Monthly climate in Williamsburg, Pennsylvania, United States

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Williamsburg features a oceanic climate (Cfb).Temperatures typically range between -2 °C (29 °F) and 23 °C (74 °F) through the year, but rarely can drop to -25 °C (-12 °F) or can rise to as high as 36 °C (97 °F).The average annual precipitation amounts to about 1244 mm (49.0 inches) and receives 150 rainy days on the 1 mm (0.04 inches) threshold annually.Williamsburg enjoys an average of 2797 hours of sunshine throughout the year, and daylight varies from 9 hours 19 minutes to 15 hours 0 minutes per day.

Monthly average temperatures in Williamsburg, Pennsylvania, United States §

The warmest months in Williamsburg are June, July and August, with daily mean temperatures ranging from 20 to 23 °C (69 - 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, Williamsburg experiences 75 days above 25 °C (77.0 °F) and 99 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Williamsburg, 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
(74°F)		 21°C
(71°F)		 28°C
(83°F)		 30°C
(87°F)		 34°C
(93°F)		 36°C
(97°F)		 34°C
(94°F)		 32°C
(89°F)		 31°C
(87°F)		 23°C
(74°F)		 19°C
(67°F)
Mean maximum 13°C
(56°F)		 17°C
(63°F)		 20°C
(68°F)		 25°C
(78°F)		 30°C
(85°F)		 31°C
(89°F)		 33°C
(91°F)		 32°C
(91°F)		 31°C
(87°F)		 27°C
(81°F)		 20°C
(69°F)		 14°C
(57°F)
Average high 2°C
(36°F)		 5°C
(41°F)		 9°C
(48°F)		 15°C
(59°F)		 21°C
(69°F)		 25°C
(78°F)		 28°C
(84°F)		 27°C
(82°F)		 24°C
(75°F)		 18°C
(64°F)		 9°C
(48°F)		 5°C
(41°F)
Daily mean -2°C
(29°F)		 0°C
(33°F)		 4°C
(39°F)		 10°C
(50°F)		 16°C
(60°F)		 20°C
(69°F)		 23°C
(74°F)		 22°C
(72°F)		 19°C
(66°F)		 13°C
(56°F)		 5°C
(41°F)		 1°C
(34°F)
Average low -5°C
(23°F)		 -4°C
(25°F)		 -1°C
(31°F)		 5°C
(41°F)		 11°C
(52°F)		 15°C
(59°F)		 18°C
(65°F)		 18°C
(64°F)		 14°C
(58°F)		 9°C
(48°F)		 1°C
(33°F)		 -2°C
(28°F)
Mean minimum -18°C
(0°F)		 -16°C
(3°F)		 -11°C
(13°F)		 -3°C
(26°F)		 1°C
(35°F)		 8°C
(46°F)		 13°C
(56°F)		 12°C
(53°F)		 7°C
(44°F)		 0°C
(33°F)		 -8°C
(18°F)		 -10°C
(14°F)
Minimum -24°C
(-10°F)		 -25°C
(-12°F)		 -16°C
(3°F)		 -5°C
(24°F)		 -2°C
(29°F)		 4°C
(40°F)		 12°C
(54°F)		 10°C
(51°F)		 2°C
(36°F)		 -2°C
(29°F)		 -12°C
(10°F)		 -15°C
(6°F)

Compare climate in Williamsburg with other places

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

Monthly average precipitation in Williamsburg, Pennsylvania, United States §

Williamsburg usually has the most precipitation in May, July and September, with an average of 13 rainy days and 125 mm (4.9 inches) of precipitation per month.The driest months in Williamsburg are January, March and November. On average, 78 mm (3.1 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Williamsburg, 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) 67 (2.6) 106 (4.2) 91 (3.6) 109 (4.3) 129 (5.1) 112 (4.4) 117 (4.6) 100 (3.9) 130 (5.1) 113 (4.4) 78 (3.1) 93 (3.7)
Average precipitation days (≥ 1 mm) 10 13 13 14 15 13 14 14 10 13 10 11

Monthly sunshine hours in Williamsburg, Pennsylvania, United States §

The sunniest months in Williamsburg are June, July and August, when the sun shines an average of 10 hours 22 minutes a day.Least sunny months in Williamsburg: January, February and December receive an average of 4 hours 40 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Williamsburg, 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 117 151 231 238 259 306 338 310 272 226 190 156
Mean daily daylight hours 9h 38m 10h 40m 11h 58m 13h 18m 14h 26m 15h 0m 14h 41m 13h 41m 12h 24m 11h 4m 9h 54m 9h 19m

Solar UV radiation in Williamsburg, Pennsylvania, United States §

Williamsburg 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 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 Williamsburg UV Index data.

Average daily maximum UV levels by month for Williamsburg, 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 9 8 6 4 3