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Monthly climate in Hatfield, Pennsylvania, United States

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Hatfield features a humid subtropical climate (Cfa).Temperatures typically range between 1 °C (34 °F) and 25 °C (78 °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 1326 mm (52.2 inches) and receives 135 rainy days on the 1 mm (0.04 inches) threshold annually.Hatfield enjoys an average of 2928 hours of sunshine throughout the year, and daylight varies from 9 hours 21 minutes to 14 hours 58 minutes per day.

Monthly average temperatures in Hatfield, Pennsylvania, United States §

The warmest months in Hatfield are June, July and August, with daily mean temperatures ranging from 22 to 25 °C (72 - 78 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 1 to 3 °C (34 - 38 °F) throughout the day. On average each year, Hatfield experiences 94 days above 25 °C (77.0 °F) and 71 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Hatfield, 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 19°C
(67°F)		 26°C
(79°F)		 28°C
(82°F)		 31°C
(87°F)		 34°C
(94°F)		 35°C
(96°F)		 36°C
(98°F)		 35°C
(95°F)		 34°C
(94°F)		 34°C
(94°F)		 25°C
(76°F)		 18°C
(65°F)
Mean maximum 16°C
(61°F)		 19°C
(67°F)		 24°C
(75°F)		 28°C
(82°F)		 32°C
(90°F)		 34°C
(93°F)		 35°C
(96°F)		 34°C
(93°F)		 32°C
(90°F)		 28°C
(83°F)		 23°C
(73°F)		 17°C
(62°F)
Average high 5°C
(41°F)		 7°C
(45°F)		 11°C
(52°F)		 17°C
(62°F)		 22°C
(72°F)		 27°C
(81°F)		 30°C
(87°F)		 29°C
(84°F)		 26°C
(78°F)		 20°C
(68°F)		 12°C
(54°F)		 7°C
(45°F)
Daily mean 1°C
(34°F)		 3°C
(37°F)		 6°C
(43°F)		 12°C
(53°F)		 17°C
(63°F)		 22°C
(72°F)		 25°C
(78°F)		 24°C
(75°F)		 21°C
(70°F)		 15°C
(60°F)		 7°C
(45°F)		 3°C
(38°F)
Average low -2°C
(28°F)		 -1°C
(30°F)		 1°C
(35°F)		 7°C
(45°F)		 12°C
(55°F)		 17°C
(63°F)		 21°C
(70°F)		 20°C
(68°F)		 17°C
(62°F)		 11°C
(52°F)		 3°C
(37°F)		 -0°C
(32°F)
Mean minimum -12°C
(10°F)		 -11°C
(12°F)		 -8°C
(18°F)		 -0°C
(32°F)		 5°C
(41°F)		 12°C
(53°F)		 16°C
(61°F)		 15°C
(59°F)		 9°C
(49°F)		 3°C
(38°F)		 -6°C
(22°F)		 -9°C
(16°F)
Minimum -17°C
(2°F)		 -16°C
(3°F)		 -16°C
(4°F)		 -2°C
(28°F)		 1°C
(34°F)		 9°C
(48°F)		 13°C
(56°F)		 13°C
(56°F)		 5°C
(42°F)		 2°C
(35°F)		 -10°C
(15°F)		 -13°C
(8°F)

Compare climate in Hatfield with other places

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

Monthly average precipitation in Hatfield, Pennsylvania, United States §

Hatfield usually has the most precipitation in May, July and August, with an average of 14 rainy days and 149 mm (5.9 inches) of precipitation per month.The driest months in Hatfield are January, September and November. On average, 82 mm (3.2 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Hatfield, 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) 108 (4.3) 108 (4.3) 105 (4.1) 144 (5.7) 104 (4.1) 148 (5.8) 155 (6.1) 96 (3.8) 105 (4.2) 84 (3.3) 102 (4.0)
Average precipitation days (≥ 1 mm) 8 11 11 11 15 12 14 15 10 10 8 10

Monthly sunshine hours in Hatfield, Pennsylvania, United States §

The sunniest months in Hatfield are June, July and August, when the sun shines an average of 10 hours 28 minutes a day.Least sunny months in Hatfield: January, February and December receive an average of 5 hours 26 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Hatfield, 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 141 175 244 246 272 310 344 307 267 221 216 178
Mean daily daylight hours 9h 40m 10h 41m 11h 58m 13h 17m 14h 24m 14h 58m 14h 39m 13h 40m 12h 24m 11h 5m 9h 56m 9h 21m

Solar UV radiation in Hatfield, Pennsylvania, United States §

Hatfield 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 Hatfield UV Index data.

Average daily maximum UV levels by month for Hatfield, 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 8 10 10 10 9 8 6 4 2