nomadseason

Monthly climate in Princeton, Massachusetts, United States

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Princeton features a humid continental climate (Dfb).Temperatures typically range between -3 °C (27 °F) and 23 °C (73 °F) through the year, but rarely can drop to -23 °C (-9 °F) or can rise to as high as 36 °C (98 °F).The average annual precipitation amounts to about 1261 mm (49.6 inches) and receives 131 rainy days on the 1 mm (0.04 inches) threshold annually.Princeton enjoys an average of 2888 hours of sunshine throughout the year, and daylight varies from 9 hours 5 minutes to 15 hours 14 minutes per day.

Monthly average temperatures in Princeton, Massachusetts, United States §

The warmest months in Princeton 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 -3 to -1 °C (27 - 31 °F) throughout the day. On average each year, Princeton experiences 65 days above 25 °C (77.0 °F) and 112 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Princeton, Massachusetts, 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
(64°F)		 21°C
(70°F)		 21°C
(70°F)		 28°C
(83°F)		 33°C
(92°F)		 35°C
(96°F)		 36°C
(98°F)		 34°C
(93°F)		 33°C
(92°F)		 27°C
(80°F)		 23°C
(74°F)		 17°C
(62°F)
Mean maximum 12°C
(54°F)		 16°C
(61°F)		 18°C
(65°F)		 22°C
(71°F)		 30°C
(87°F)		 33°C
(91°F)		 34°C
(94°F)		 33°C
(91°F)		 31°C
(87°F)		 24°C
(76°F)		 20°C
(68°F)		 14°C
(58°F)
Average high 1°C
(34°F)		 3°C
(38°F)		 6°C
(44°F)		 13°C
(55°F)		 19°C
(67°F)		 25°C
(77°F)		 28°C
(83°F)		 27°C
(81°F)		 23°C
(74°F)		 16°C
(62°F)		 9°C
(48°F)		 3°C
(38°F)
Daily mean -3°C
(27°F)		 -1°C
(30°F)		 2°C
(35°F)		 8°C
(47°F)		 14°C
(58°F)		 20°C
(68°F)		 23°C
(73°F)		 22°C
(72°F)		 18°C
(65°F)		 12°C
(54°F)		 4°C
(40°F)		 -1°C
(31°F)
Average low -7°C
(20°F)		 -6°C
(22°F)		 -3°C
(27°F)		 3°C
(39°F)		 9°C
(49°F)		 14°C
(58°F)		 18°C
(65°F)		 18°C
(64°F)		 13°C
(56°F)		 8°C
(46°F)		 0°C
(32°F)		 -4°C
(24°F)
Mean minimum -19°C
(-2°F)		 -17°C
(1°F)		 -14°C
(8°F)		 -3°C
(27°F)		 2°C
(37°F)		 9°C
(49°F)		 13°C
(56°F)		 11°C
(52°F)		 6°C
(42°F)		 -1°C
(30°F)		 -10°C
(15°F)		 -15°C
(5°F)
Minimum -23°C
(-9°F)		 -21°C
(-6°F)		 -15°C
(5°F)		 -5°C
(24°F)		 0°C
(33°F)		 4°C
(40°F)		 12°C
(53°F)		 9°C
(48°F)		 2°C
(37°F)		 -7°C
(20°F)		 -17°C
(2°F)		 -22°C
(-8°F)

Compare climate in Princeton with other places

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

Monthly average precipitation in Princeton, Massachusetts, United States §

Princeton usually has the most precipitation in April, July and October, with an average of 13 rainy days and 139 mm (5.5 inches) of precipitation per month.The driest months in Princeton are January, March and June. On average, 83 mm (3.3 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Princeton, Massachusetts, 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) 76 (3.0) 90 (3.6) 86 (3.4) 131 (5.2) 92 (3.6) 89 (3.5) 150 (5.9) 94 (3.7) 89 (3.5) 136 (5.4) 102 (4.0) 126 (5.0)
Average precipitation days (≥ 1 mm) 8 11 9 14 12 12 13 12 8 12 10 10

Monthly sunshine hours in Princeton, Massachusetts, United States §

The sunniest months in Princeton are June, July and August, when the sun shines an average of 10 hours 24 minutes a day.Least sunny months in Princeton: January, February and December receive an average of 5 hours 33 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Princeton, Massachusetts, 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 147 181 248 231 270 316 322 317 270 208 196 175
Mean daily daylight hours 9h 26m 10h 33m 11h 57m 13h 24m 14h 37m 15h 14m 14h 54m 13h 49m 12h 25m 10h 59m 9h 44m 9h 5m

Solar UV radiation in Princeton, Massachusetts, United States §

Princeton experiences the highest level of ultraviolet (UV) radiation in May, June and August, when the maximum UV index can reach values of 9 - 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 Princeton UV Index data.

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