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Monthly climate in Cornish, Maine, United States

Last updated: March 2, 2024

Under the Köppen–Geiger climate classification Cornish features a humid continental climate (Dfb). Temperatures typically range between -5 °C (24 °F) and 22 °C (72 °F) through the year, but rarely can drop to -26 °C (-14 °F) or can rise to as high as 36 °C (97 °F). The average annual precipitation amounts to about 1163 mm (45.8 inches) and receives 117 rainy days on the 1 mm (0.04 inches) threshold annually. Cornish enjoys an average of 2992 hours of sunshine throughout the year, and daylight varies from 8 hours 58 minutes to 15 hours 22 minutes per day.

Monthly average temperatures in Cornish, Maine, United States §

The warmest months in Cornish are June, July and August, with daily mean temperatures ranging from 19 to 22 °C (67 - 72 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from -5 to -2 °C (24 - 28 °F) throughout the day. On average each year, Cornish experiences 61 days above 25 °C (77.0 °F) and 120 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Cornish, Maine, 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 15°C
(59°F)		 20°C
(68°F)		 19°C
(67°F)		 28°C
(82°F)		 34°C
(93°F)		 36°C
(97°F)		 35°C
(95°F)		 34°C
(93°F)		 32°C
(90°F)		 27°C
(81°F)		 23°C
(74°F)		 15°C
(60°F)
Mean maximum 11°C
(52°F)		 14°C
(57°F)		 16°C
(61°F)		 22°C
(71°F)		 31°C
(88°F)		 31°C
(88°F)		 33°C
(92°F)		 32°C
(90°F)		 30°C
(86°F)		 25°C
(77°F)		 19°C
(67°F)		 13°C
(57°F)
Average high -0°C
(32°F)		 1°C
(35°F)		 5°C
(42°F)		 12°C
(53°F)		 19°C
(66°F)		 24°C
(76°F)		 27°C
(81°F)		 27°C
(80°F)		 23°C
(73°F)		 16°C
(61°F)		 8°C
(46°F)		 2°C
(36°F)
Daily mean -5°C
(24°F)		 -3°C
(26°F)		 0°C
(33°F)		 7°C
(45°F)		 13°C
(56°F)		 19°C
(67°F)		 22°C
(72°F)		 22°C
(71°F)		 18°C
(64°F)		 11°C
(52°F)		 3°C
(39°F)		 -2°C
(28°F)
Average low -9°C
(16°F)		 -8°C
(17°F)		 -4°C
(25°F)		 3°C
(37°F)		 8°C
(47°F)		 14°C
(57°F)		 18°C
(64°F)		 17°C
(63°F)		 13°C
(56°F)		 7°C
(45°F)		 -0°C
(31°F)		 -6°C
(21°F)
Mean minimum -21°C
(-6°F)		 -20°C
(-3°F)		 -16°C
(4°F)		 -3°C
(27°F)		 2°C
(36°F)		 8°C
(47°F)		 13°C
(55°F)		 11°C
(52°F)		 6°C
(42°F)		 0°C
(33°F)		 -9°C
(15°F)		 -18°C
(0°F)
Minimum -26°C
(-14°F)		 -25°C
(-13°F)		 -19°C
(-3°F)		 -4°C
(24°F)		 1°C
(34°F)		 5°C
(41°F)		 10°C
(51°F)		 9°C
(49°F)		 2°C
(35°F)		 -3°C
(28°F)		 -15°C
(5°F)		 -25°C
(-13°F)

Compare climate in Cornish with other places

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

Monthly average precipitation in Cornish, Maine, United States §

Cornish usually has the most precipitation in April, July and October, with an average of 11 rainy days and 130 mm (5.1 inches) of precipitation per month. The driest months in Cornish are March, May and September. On average, 72 mm (2.8 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Cornish, Maine, 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) 79 (3.1) 89 (3.5) 77 (3.0) 123 (4.8) 74 (2.9) 87 (3.4) 145 (5.7) 82 (3.2) 64 (2.5) 121 (4.8) 107 (4.2) 114 (4.5)
Average precipitation days (≥ 1 mm) 8 10 8 12 10 10 12 10 7 10 10 10

Monthly sunshine hours in Cornish, Maine, United States §

The sunniest months in Cornish are June, July and August, when the sun shines an average of 10 hours 53 minutes a day. Least sunny months in Cornish: January, February and December receive an average of 5 hours 32 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Cornish, Maine, 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 148 181 256 243 290 330 333 336 290 216 189 174
Mean daily daylight hours 9h 20m 10h 29m 11h 58m 13h 27m 14h 44m 15h 22m 15h 1m 13h 53m 12h 26m 10h 57m 9h 38m 8h 58m

Solar UV radiation in Cornish, Maine, United States §

Cornish 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 3. For more detailed information, check out our hourly Cornish UV Index data.

Average daily maximum UV levels by month for Cornish, Maine, 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) 2 4 5 8 9 10 9 9 7 5 3 2

Detailed Monthly Weather Insights for Cornish, Maine, United States

Discover in-depth weather details for every month in Cornish. 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 Cornish'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.