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Monthly climate in Northampton, Massachusetts, United States

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Northampton features a humid continental climate (Dfb).Temperatures typically range between -2 °C (28 °F) and 23 °C (73 °F) through the year, but rarely can drop to -23 °C (-10 °F) or can rise to as high as 36 °C (97 °F).The average annual precipitation amounts to about 1355 mm (53.3 inches) and receives 131 rainy days on the 1 mm (0.04 inches) threshold annually.Northampton enjoys an average of 2874 hours of sunshine throughout the year, and daylight varies from 9 hours 7 minutes to 15 hours 12 minutes per day.

Monthly average temperatures in Northampton, Massachusetts, United States §

The warmest months in Northampton 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 0 °C (28 - 32 °F) throughout the day. On average each year, Northampton experiences 66 days above 25 °C (77.0 °F) and 107 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Northampton, 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
(65°F)		 22°C
(73°F)		 23°C
(73°F)		 29°C
(85°F)		 33°C
(92°F)		 35°C
(95°F)		 36°C
(97°F)		 34°C
(94°F)		 33°C
(92°F)		 27°C
(81°F)		 24°C
(75°F)		 16°C
(60°F)
Mean maximum 12°C
(54°F)		 17°C
(62°F)		 19°C
(67°F)		 23°C
(73°F)		 31°C
(87°F)		 33°C
(91°F)		 34°C
(94°F)		 33°C
(91°F)		 31°C
(88°F)		 25°C
(78°F)		 20°C
(69°F)		 14°C
(57°F)
Average high 2°C
(35°F)		 4°C
(39°F)		 7°C
(45°F)		 13°C
(57°F)		 20°C
(68°F)		 25°C
(78°F)		 28°C
(82°F)		 27°C
(81°F)		 23°C
(74°F)		 17°C
(63°F)		 9°C
(49°F)		 4°C
(39°F)
Daily mean -2°C
(28°F)		 -1°C
(31°F)		 2°C
(36°F)		 8°C
(48°F)		 15°C
(59°F)		 20°C
(68°F)		 23°C
(73°F)		 22°C
(72°F)		 18°C
(65°F)		 12°C
(54°F)		 5°C
(41°F)		 -0°C
(32°F)
Average low -6°C
(21°F)		 -5°C
(23°F)		 -2°C
(28°F)		 4°C
(39°F)		 10°C
(50°F)		 14°C
(58°F)		 18°C
(65°F)		 17°C
(64°F)		 13°C
(56°F)		 8°C
(47°F)		 0°C
(33°F)		 -4°C
(25°F)
Mean minimum -19°C
(-1°F)		 -17°C
(1°F)		 -13°C
(9°F)		 -3°C
(28°F)		 3°C
(37°F)		 10°C
(50°F)		 13°C
(56°F)		 11°C
(52°F)		 5°C
(42°F)		 -0°C
(32°F)		 -9°C
(15°F)		 -14°C
(7°F)
Minimum -23°C
(-10°F)		 -21°C
(-6°F)		 -17°C
(1°F)		 -5°C
(24°F)		 0°C
(33°F)		 5°C
(41°F)		 12°C
(53°F)		 9°C
(49°F)		 2°C
(36°F)		 -3°C
(26°F)		 -16°C
(3°F)		 -20°C
(-3°F)

Compare climate in Northampton with other places

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

Monthly average precipitation in Northampton, Massachusetts, United States §

Northampton usually has the most precipitation in April, July and October, with an average of 12 rainy days and 153 mm (6.0 inches) of precipitation per month.The driest months in Northampton are January, March and June. On average, 84 mm (3.3 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Northampton, 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) 79 (3.1) 97 (3.8) 85 (3.4) 144 (5.7) 109 (4.3) 89 (3.5) 158 (6.2) 106 (4.2) 112 (4.4) 156 (6.2) 97 (3.8) 123 (4.8)
Average precipitation days (≥ 1 mm) 8 11 10 13 13 11 13 12 8 12 10 10

Monthly sunshine hours in Northampton, Massachusetts, United States §

The sunniest months in Northampton are June, July and August, when the sun shines an average of 10 hours 30 minutes a day.Least sunny months in Northampton: January, February and December receive an average of 5 hours 18 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Northampton, 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 139 178 246 232 268 319 327 320 277 207 192 165
Mean daily daylight hours 9h 28m 10h 34m 11h 58m 13h 23m 14h 35m 15h 12m 14h 52m 13h 47m 12h 25m 11h 0m 9h 46m 9h 7m

Solar UV radiation in Northampton, Massachusetts, United States §

Northampton 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 Northampton UV Index data.

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