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Monthly climate in Niantic, Connecticut, United States

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Niantic features a oceanic climate (Cfb).Temperatures typically range between 1 °C (35 °F) and 23 °C (73 °F) through the year, but rarely can drop to -16 °C (4 °F) or can rise to as high as 30 °C (86 °F).The average annual precipitation amounts to about 1361 mm (53.6 inches) and receives 126 rainy days on the 1 mm (0.04 inches) threshold annually.Niantic enjoys an average of 3030 hours of sunshine throughout the year, and daylight varies from 9 hours 15 minutes to 15 hours 4 minutes per day.

Monthly average temperatures in Niantic, Connecticut, United States §

The warmest months in Niantic are July, August and September, 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 March, when daily mean temperatures range from 1 to 4 °C (35 - 39 °F) throughout the day. On average each year, Niantic experiences 20 days above 25 °C (77.0 °F) and 51 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Niantic, 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 14°C
(58°F)		 12°C
(55°F)		 16°C
(61°F)		 19°C
(66°F)		 23°C
(73°F)		 27°C
(80°F)		 30°C
(86°F)		 28°C
(83°F)		 28°C
(82°F)		 26°C
(79°F)		 20°C
(68°F)		 16°C
(61°F)
Mean maximum 11°C
(53°F)		 11°C
(51°F)		 12°C
(54°F)		 15°C
(59°F)		 21°C
(70°F)		 25°C
(77°F)		 28°C
(83°F)		 27°C
(82°F)		 26°C
(78°F)		 23°C
(74°F)		 19°C
(66°F)		 14°C
(58°F)
Average high 4°C
(39°F)		 5°C
(40°F)		 6°C
(44°F)		 10°C
(51°F)		 15°C
(59°F)		 20°C
(68°F)		 24°C
(76°F)		 24°C
(76°F)		 22°C
(72°F)		 18°C
(64°F)		 11°C
(53°F)		 6°C
(44°F)
Daily mean 1°C
(35°F)		 2°C
(36°F)		 4°C
(39°F)		 8°C
(47°F)		 13°C
(55°F)		 18°C
(65°F)		 22°C
(72°F)		 23°C
(73°F)		 20°C
(68°F)		 16°C
(60°F)		 9°C
(48°F)		 4°C
(40°F)
Average low -1°C
(30°F)		 -1°C
(31°F)		 1°C
(35°F)		 6°C
(43°F)		 11°C
(52°F)		 16°C
(61°F)		 21°C
(69°F)		 21°C
(70°F)		 18°C
(65°F)		 13°C
(56°F)		 6°C
(43°F)		 2°C
(35°F)
Mean minimum -12°C
(11°F)		 -9°C
(15°F)		 -6°C
(21°F)		 1°C
(35°F)		 6°C
(43°F)		 12°C
(53°F)		 17°C
(63°F)		 17°C
(63°F)		 12°C
(54°F)		 6°C
(43°F)		 -3°C
(27°F)		 -6°C
(21°F)
Minimum -16°C
(4°F)		 -14°C
(8°F)		 -9°C
(16°F)		 -0°C
(32°F)		 3°C
(38°F)		 10°C
(50°F)		 15°C
(60°F)		 15°C
(60°F)		 10°C
(50°F)		 4°C
(39°F)		 -7°C
(19°F)		 -11°C
(12°F)

Compare climate in Niantic with other places

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

Monthly average precipitation in Niantic, Connecticut, United States §

Niantic usually has the most precipitation in April, October and December, with an average of 12 rainy days and 146 mm (5.7 inches) of precipitation per month.The driest months in Niantic are January, June and August. On average, 87 mm (3.4 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Niantic, 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) 82 (3.2) 109 (4.3) 106 (4.2) 138 (5.4) 119 (4.7) 82 (3.2) 123 (4.8) 97 (3.8) 99 (3.9) 153 (6.0) 108 (4.3) 146 (5.8)
Average precipitation days (≥ 1 mm) 8 11 9 13 13 9 10 10 9 13 10 11

Monthly sunshine hours in Niantic, Connecticut, United States §

The sunniest months in Niantic are June, July and August, when the sun shines an average of 10 hours 50 minutes a day.Least sunny months in Niantic: January, February and December receive an average of 5 hours 38 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Niantic, 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 152 184 261 249 290 321 348 326 280 228 208 176
Mean daily daylight hours 9h 34m 10h 38m 11h 58m 13h 20m 14h 30m 15h 4m 14h 45m 13h 43m 12h 24m 11h 3m 9h 51m 9h 15m

Solar UV radiation in Niantic, Connecticut, United States §

Niantic experiences the highest level of ultraviolet (UV) radiation in June, July 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 Niantic UV Index data.

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