nomadseason

Monthly climate in South Windsor, Connecticut, United States

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification South Windsor features a humid continental climate (Dfb).Temperatures typically range between -1 °C (31 °F) and 24 °C (75 °F) through the year, but rarely can drop to -22 °C (-7 °F) or can rise to as high as 38 °C (100 °F).The average annual precipitation amounts to about 1242 mm (48.9 inches) and receives 127 rainy days on the 1 mm (0.04 inches) threshold annually.South Windsor enjoys an average of 3022 hours of sunshine throughout the year, and daylight varies from 9 hours 11 minutes to 15 hours 8 minutes per day.

Monthly average temperatures in South Windsor, Connecticut, United States §

The warmest months in South Windsor are June, July and August, with daily mean temperatures ranging from 20 to 24 °C (69 - 75 °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 - 34 °F) throughout the day. On average each year, South Windsor experiences 74 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 South Windsor, Connecticut, 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 20°C
(68°F)		 22°C
(71°F)		 24°C
(75°F)		 29°C
(85°F)		 34°C
(94°F)		 36°C
(97°F)		 38°C
(100°F)		 35°C
(95°F)		 34°C
(94°F)		 30°C
(86°F)		 24°C
(76°F)		 17°C
(63°F)
Mean maximum 14°C
(57°F)		 17°C
(64°F)		 20°C
(67°F)		 23°C
(74°F)		 31°C
(88°F)		 34°C
(93°F)		 36°C
(97°F)		 33°C
(92°F)		 31°C
(88°F)		 27°C
(80°F)		 21°C
(71°F)		 15°C
(60°F)
Average high 3°C
(38°F)		 5°C
(41°F)		 8°C
(48°F)		 14°C
(58°F)		 20°C
(69°F)		 26°C
(79°F)		 29°C
(84°F)		 28°C
(83°F)		 24°C
(76°F)		 18°C
(65°F)		 11°C
(51°F)		 5°C
(41°F)
Daily mean -1°C
(31°F)		 1°C
(33°F)		 4°C
(39°F)		 9°C
(49°F)		 15°C
(60°F)		 20°C
(69°F)		 24°C
(75°F)		 23°C
(74°F)		 19°C
(67°F)		 13°C
(56°F)		 6°C
(43°F)		 1°C
(34°F)
Average low -5°C
(24°F)		 -4°C
(25°F)		 -1°C
(30°F)		 5°C
(40°F)		 10°C
(51°F)		 15°C
(60°F)		 19°C
(66°F)		 18°C
(65°F)		 14°C
(58°F)		 9°C
(48°F)		 1°C
(34°F)		 -3°C
(27°F)
Mean minimum -18°C
(0°F)		 -16°C
(4°F)		 -11°C
(13°F)		 -2°C
(28°F)		 3°C
(39°F)		 10°C
(50°F)		 14°C
(58°F)		 12°C
(53°F)		 6°C
(44°F)		 -0°C
(32°F)		 -8°C
(18°F)		 -12°C
(10°F)
Minimum -22°C
(-7°F)		 -21°C
(-6°F)		 -18°C
(-1°F)		 -6°C
(22°F)		 1°C
(34°F)		 6°C
(43°F)		 13°C
(55°F)		 10°C
(51°F)		 3°C
(37°F)		 -3°C
(26°F)		 -13°C
(9°F)		 -19°C
(-1°F)

Compare climate in South Windsor with other places

Compare temperature, precipitation, sunshine, UV index in South Windsor, Connecticut, United States with other places around the world.

Monthly average precipitation in South Windsor, Connecticut, United States §

South Windsor usually has the most precipitation in April, July and October, with an average of 12 rainy days and 134 mm (5.3 inches) of precipitation per month.The driest months in South Windsor are January, February and June. On average, 79 mm (3.1 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in South Windsor, Connecticut, 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) 66 (2.6) 86 (3.4) 89 (3.5) 125 (4.9) 113 (4.5) 85 (3.4) 144 (5.7) 90 (3.5) 98 (3.8) 132 (5.2) 91 (3.6) 123 (4.9)
Average precipitation days (≥ 1 mm) 8 11 9 13 13 11 13 10 9 11 9 10

Monthly sunshine hours in South Windsor, Connecticut, United States §

The sunniest months in South Windsor are June, July and August, when the sun shines an average of 10 hours 48 minutes a day.Least sunny months in South Windsor: January, February and December receive an average of 5 hours 41 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in South Windsor, Connecticut, 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 152 186 259 249 285 323 344 326 282 224 208 180
Mean daily daylight hours 9h 32m 10h 36m 11h 58m 13h 21m 14h 32m 15h 8m 14h 48m 13h 45m 12h 25m 11h 2m 9h 49m 9h 11m

Solar UV radiation in South Windsor, Connecticut, United States §

South Windsor 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 South Windsor UV Index data.

Average daily maximum UV levels by month for South Windsor, Connecticut, 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