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Monthly climate in Franklin, Massachusetts, United States

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Franklin features a humid subtropical climate (Cfa).Temperatures typically range between -1 °C (31 °F) and 23 °C (74 °F) through the year, but rarely can drop to -21 °C (-6 °F) or can rise to as high as 38 °C (100 °F).The average annual precipitation amounts to about 1252 mm (49.3 inches) and receives 128 rainy days on the 1 mm (0.04 inches) threshold annually.Franklin enjoys an average of 2897 hours of sunshine throughout the year, and daylight varies from 9 hours 9 minutes to 15 hours 9 minutes per day.

Monthly average temperatures in Franklin, Massachusetts, United States §

The warmest months in Franklin 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 -1 to 1 °C (31 - 35 °F) throughout the day. On average each year, Franklin experiences 69 days above 25 °C (77.0 °F) and 98 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Franklin, 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 21°C
(69°F)		 21°C
(71°F)		 22°C
(72°F)		 29°C
(85°F)		 34°C
(94°F)		 35°C
(96°F)		 38°C
(100°F)		 35°C
(95°F)		 34°C
(94°F)		 28°C
(82°F)		 24°C
(75°F)		 17°C
(64°F)
Mean maximum 14°C
(57°F)		 17°C
(64°F)		 19°C
(66°F)		 22°C
(73°F)		 31°C
(88°F)		 32°C
(90°F)		 35°C
(96°F)		 33°C
(92°F)		 30°C
(87°F)		 26°C
(79°F)		 22°C
(71°F)		 16°C
(61°F)
Average high 3°C
(38°F)		 5°C
(42°F)		 8°C
(47°F)		 14°C
(57°F)		 20°C
(68°F)		 25°C
(78°F)		 28°C
(83°F)		 28°C
(82°F)		 24°C
(75°F)		 18°C
(64°F)		 11°C
(51°F)		 5°C
(42°F)
Daily mean -1°C
(31°F)		 1°C
(34°F)		 4°C
(39°F)		 9°C
(49°F)		 15°C
(59°F)		 20°C
(69°F)		 23°C
(74°F)		 23°C
(73°F)		 19°C
(66°F)		 13°C
(56°F)		 6°C
(43°F)		 1°C
(35°F)
Average low -4°C
(24°F)		 -4°C
(26°F)		 -1°C
(31°F)		 5°C
(41°F)		 10°C
(50°F)		 15°C
(60°F)		 19°C
(66°F)		 18°C
(66°F)		 14°C
(58°F)		 9°C
(48°F)		 1°C
(35°F)		 -3°C
(27°F)
Mean minimum -16°C
(3°F)		 -15°C
(5°F)		 -11°C
(13°F)		 -2°C
(28°F)		 4°C
(39°F)		 10°C
(50°F)		 14°C
(57°F)		 12°C
(53°F)		 7°C
(45°F)		 0°C
(33°F)		 -7°C
(19°F)		 -12°C
(10°F)
Minimum -21°C
(-6°F)		 -18°C
(0°F)		 -14°C
(6°F)		 -4°C
(25°F)		 1°C
(35°F)		 6°C
(42°F)		 13°C
(55°F)		 8°C
(47°F)		 4°C
(40°F)		 -3°C
(26°F)		 -11°C
(12°F)		 -17°C
(2°F)

Compare climate in Franklin with other places

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

Monthly average precipitation in Franklin, Massachusetts, United States §

Franklin usually has the most precipitation in April, July and October, with an average of 12 rainy days and 135 mm (5.3 inches) of precipitation per month.The driest months in Franklin are January, February and September. On average, 82 mm (3.2 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Franklin, 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) 70 (2.8) 86 (3.4) 96 (3.8) 126 (5.0) 100 (3.9) 95 (3.7) 137 (5.4) 94 (3.7) 90 (3.5) 141 (5.6) 97 (3.8) 119 (4.7)
Average precipitation days (≥ 1 mm) 8 10 10 13 12 12 13 12 8 11 10 9

Monthly sunshine hours in Franklin, Massachusetts, United States §

The sunniest months in Franklin are June, July and August, when the sun shines an average of 10 hours 23 minutes a day.Least sunny months in Franklin: 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 Franklin, 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 145 184 250 234 274 316 327 312 269 208 198 175
Mean daily daylight hours 9h 30m 10h 35m 11h 58m 13h 22m 14h 34m 15h 9m 14h 50m 13h 46m 12h 25m 11h 1m 9h 47m 9h 9m

Solar UV radiation in Franklin, Massachusetts, United States §

Franklin 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 Franklin UV Index data.

Average daily maximum UV levels by month for Franklin, 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