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Monthly climate in Belfast, New York, United States

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Belfast features a humid continental climate (Dfb).Temperatures typically range between -4 °C (24 °F) and 21 °C (70 °F) through the year, but rarely can drop to -27 °C (-16 °F) or can rise to as high as 33 °C (92 °F).The average annual precipitation amounts to about 1150 mm (45.3 inches) and receives 170 rainy days on the 1 mm (0.04 inches) threshold annually.Belfast enjoys an average of 2706 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 Belfast, New York, United States §

The warmest months in Belfast are June, July and August, with daily mean temperatures ranging from 18 to 21 °C (65 - 70 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from -4 to -1 °C (24 - 30 °F) throughout the day. On average each year, Belfast experiences 48 days above 25 °C (77.0 °F) and 126 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Belfast, New York, 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 16°C
(61°F)		 20°C
(68°F)		 22°C
(72°F)		 26°C
(80°F)		 30°C
(86°F)		 33°C
(91°F)		 33°C
(92°F)		 31°C
(89°F)		 31°C
(88°F)		 27°C
(82°F)		 24°C
(75°F)		 15°C
(60°F)
Mean maximum 11°C
(53°F)		 14°C
(58°F)		 18°C
(65°F)		 23°C
(73°F)		 29°C
(85°F)		 30°C
(87°F)		 31°C
(88°F)		 30°C
(86°F)		 29°C
(84°F)		 26°C
(78°F)		 18°C
(65°F)		 12°C
(53°F)
Average high -1°C
(31°F)		 2°C
(35°F)		 6°C
(43°F)		 12°C
(54°F)		 19°C
(66°F)		 23°C
(74°F)		 26°C
(78°F)		 25°C
(78°F)		 22°C
(71°F)		 15°C
(60°F)		 7°C
(44°F)		 2°C
(36°F)
Daily mean -4°C
(24°F)		 -3°C
(27°F)		 1°C
(34°F)		 7°C
(45°F)		 14°C
(57°F)		 18°C
(65°F)		 21°C
(70°F)		 20°C
(68°F)		 16°C
(62°F)		 11°C
(52°F)		 3°C
(37°F)		 -1°C
(30°F)
Average low -8°C
(17°F)		 -7°C
(19°F)		 -4°C
(25°F)		 2°C
(36°F)		 9°C
(48°F)		 13°C
(56°F)		 16°C
(62°F)		 15°C
(60°F)		 12°C
(53°F)		 7°C
(44°F)		 -1°C
(30°F)		 -5°C
(24°F)
Mean minimum -21°C
(-6°F)		 -21°C
(-5°F)		 -16°C
(4°F)		 -5°C
(24°F)		 -0°C
(32°F)		 7°C
(45°F)		 11°C
(52°F)		 9°C
(48°F)		 4°C
(40°F)		 -2°C
(29°F)		 -12°C
(11°F)		 -16°C
(4°F)
Minimum -27°C
(-16°F)		 -24°C
(-10°F)		 -21°C
(-6°F)		 -6°C
(21°F)		 -4°C
(25°F)		 3°C
(37°F)		 9°C
(49°F)		 8°C
(46°F)		 -0°C
(32°F)		 -3°C
(26°F)		 -20°C
(-4°F)		 -23°C
(-10°F)

Compare climate in Belfast with other places

Compare temperature, precipitation, sunshine, UV index in Belfast, New York, United States with other places around the world.

Monthly average precipitation in Belfast, New York, United States §

Belfast usually has the most precipitation in May, July and October, with an average of 15 rainy days and 121 mm (4.8 inches) of precipitation per month.The driest months in Belfast are January, March and September. On average, 78 mm (3.1 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Belfast, New York, 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) 78 (3.1) 90 (3.5) 80 (3.1) 109 (4.3) 117 (4.6) 99 (3.9) 118 (4.7) 84 (3.3) 77 (3.0) 127 (5.0) 85 (3.4) 87 (3.4)
Average precipitation days (≥ 1 mm) 13 16 13 16 16 14 16 13 9 14 15 15

Monthly sunshine hours in Belfast, New York, United States §

The sunniest months in Belfast are June, July and August, when the sun shines an average of 10 hours 47 minutes a day.Least sunny months in Belfast: January, February and December receive an average of 3 hours 51 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Belfast, New York, 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 98 142 216 232 277 327 336 329 281 202 153 109
Mean daily daylight hours 9h 28m 10h 34m 11h 58m 13h 23m 14h 36m 15h 12m 14h 52m 13h 48m 12h 25m 11h 0m 9h 45m 9h 7m

Solar UV radiation in Belfast, New York, United States §

Belfast experiences the highest level of ultraviolet (UV) radiation in May, June and July, when the maximum UV index can reach values of 10 - 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 Belfast UV Index data.

Average daily maximum UV levels by month for Belfast, New York, 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 9 10 10 10 9 8 6 4 2