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Monthly climate in Lisbon, Connecticut, United States

Last updated: March 2, 2024

Under the Köppen–Geiger climate classification Lisbon features a oceanic climate (Cfb). Temperatures typically range between 0 °C (33 °F) and 23 °C (75 °F) through the year, but rarely can drop to -20 °C (-4 °F) or can rise to as high as 38 °C (101 °F). The average annual precipitation amounts to about 1314 mm (51.7 inches) and receives 127 rainy days on the 1 mm (0.04 inches) threshold annually. Lisbon enjoys an average of 3024 hours of sunshine throughout the year, and daylight varies from 9 hours 13 minutes to 15 hours 6 minutes per day.

Monthly average temperatures in Lisbon, Connecticut, United States §

The warmest months in Lisbon are June, July and August, with daily mean temperatures ranging from 20 to 23 °C (68 - 75 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 0 to 2 °C (33 - 36 °F) throughout the day. On average each year, Lisbon experiences 66 days above 25 °C (77.0 °F) and 87 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Lisbon, 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
(69°F)		 20°C
(67°F)		 21°C
(70°F)		 28°C
(83°F)		 33°C
(92°F)		 35°C
(96°F)		 38°C
(101°F)		 34°C
(94°F)		 33°C
(91°F)		 30°C
(87°F)		 24°C
(75°F)		 17°C
(63°F)
Mean maximum 14°C
(58°F)		 16°C
(61°F)		 18°C
(65°F)		 22°C
(71°F)		 30°C
(87°F)		 32°C
(91°F)		 36°C
(96°F)		 33°C
(91°F)		 30°C
(86°F)		 27°C
(80°F)		 21°C
(71°F)		 16°C
(61°F)
Average high 4°C
(39°F)		 5°C
(42°F)		 8°C
(48°F)		 14°C
(57°F)		 20°C
(68°F)		 25°C
(77°F)		 28°C
(83°F)		 28°C
(82°F)		 24°C
(75°F)		 18°C
(65°F)		 11°C
(53°F)		 6°C
(43°F)
Daily mean 0°C
(33°F)		 1°C
(35°F)		 4°C
(40°F)		 9°C
(49°F)		 15°C
(59°F)		 20°C
(68°F)		 23°C
(75°F)		 23°C
(74°F)		 19°C
(67°F)		 14°C
(58°F)		 7°C
(45°F)		 2°C
(36°F)
Average low -4°C
(25°F)		 -3°C
(28°F)		 -0°C
(32°F)		 5°C
(41°F)		 10°C
(51°F)		 15°C
(60°F)		 19°C
(67°F)		 19°C
(67°F)		 15°C
(60°F)		 10°C
(50°F)		 2°C
(36°F)		 -2°C
(29°F)
Mean minimum -16°C
(4°F)		 -14°C
(7°F)		 -9°C
(16°F)		 -1°C
(30°F)		 4°C
(40°F)		 11°C
(51°F)		 15°C
(59°F)		 13°C
(56°F)		 8°C
(47°F)		 2°C
(36°F)		 -7°C
(20°F)		 -10°C
(14°F)
Minimum -20°C
(-4°F)		 -17°C
(2°F)		 -15°C
(6°F)		 -3°C
(26°F)		 1°C
(35°F)		 7°C
(44°F)		 13°C
(56°F)		 11°C
(51°F)		 5°C
(42°F)		 -1°C
(31°F)		 -11°C
(12°F)		 -15°C
(5°F)

Compare climate in Lisbon with other places

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

Monthly average precipitation in Lisbon, Connecticut, United States §

Lisbon usually has the most precipitation in July, October and December, with an average of 11 rainy days and 137 mm (5.4 inches) of precipitation per month. The driest months in Lisbon are January, February and September. On average, 87 mm (3.4 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Lisbon, 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) 72 (2.8) 92 (3.6) 98 (3.8) 129 (5.1) 109 (4.3) 96 (3.8) 149 (5.8) 111 (4.4) 96 (3.8) 132 (5.2) 101 (4.0) 130 (5.1)
Average precipitation days (≥ 1 mm) 8 10 9 12 12 10 13 12 9 12 10 10

Monthly sunshine hours in Lisbon, Connecticut, United States §

The sunniest months in Lisbon are June, July and August, when the sun shines an average of 10 hours 50 minutes a day. Least sunny months in Lisbon: 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 Lisbon, 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 150 187 260 249 288 323 345 328 280 223 206 179
Mean daily daylight hours 9h 33m 10h 37m 11h 58m 13h 21m 14h 31m 15h 6m 14h 47m 13h 44m 12h 25m 11h 2m 9h 50m 9h 13m

Solar UV radiation in Lisbon, Connecticut, United States §

Lisbon 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 Lisbon UV Index data.

Average daily maximum UV levels by month for Lisbon, 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

Detailed Monthly Weather Insights for Lisbon, Connecticut, United States

Discover in-depth weather details for every month in Lisbon. Click through the links below for comprehensive overviews of temperature trends, precipitation levels, sunshine hours, and solar UV radiation specifics. Whether planning a visit or simply curious about Lisbon's climate nuances, these monthly breakdowns provide the information you need for an informed understanding of what to expect throughout the year.

Each link leads to a detailed account of the typical weather conditions for that month, providing both locals and tourists with vital information to plan their daily activities, wardrobe, and travel itineraries accordingly.