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Monthly climate in Guilford, Maine, United States

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Guilford features a humid continental climate (Dfb).Temperatures typically range between -8 °C (17 °F) and 20 °C (68 °F) through the year, but rarely can drop to -31 °C (-24 °F) or can rise to as high as 35 °C (96 °F).The average annual precipitation amounts to about 1212 mm (47.7 inches) and receives 129 rainy days on the 1 mm (0.04 inches) threshold annually.Guilford enjoys an average of 2863 hours of sunshine throughout the year, and daylight varies from 8 hours 47 minutes to 15 hours 33 minutes per day.

Monthly average temperatures in Guilford, Maine, United States §

The warmest months in Guilford are June, July and August, with daily mean temperatures ranging from 17 to 20 °C (63 - 68 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from -8 to -6 °C (17 - 22 °F) throughout the day. On average each year, Guilford experiences 39 days above 25 °C (77.0 °F) and 151 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Guilford, 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 11°C
(53°F)		 10°C
(51°F)		 16°C
(61°F)		 22°C
(73°F)		 32°C
(90°F)		 34°C
(94°F)		 35°C
(96°F)		 33°C
(91°F)		 32°C
(90°F)		 25°C
(77°F)		 23°C
(73°F)		 14°C
(58°F)
Mean maximum 7°C
(45°F)		 8°C
(47°F)		 10°C
(50°F)		 18°C
(65°F)		 29°C
(84°F)		 30°C
(85°F)		 31°C
(88°F)		 31°C
(89°F)		 28°C
(82°F)		 22°C
(72°F)		 16°C
(62°F)		 11°C
(52°F)
Average high -4°C
(25°F)		 -2°C
(28°F)		 2°C
(35°F)		 9°C
(48°F)		 17°C
(63°F)		 23°C
(73°F)		 25°C
(77°F)		 25°C
(77°F)		 20°C
(69°F)		 13°C
(56°F)		 5°C
(40°F)		 -2°C
(29°F)
Daily mean -8°C
(17°F)		 -7°C
(19°F)		 -3°C
(27°F)		 4°C
(39°F)		 11°C
(53°F)		 17°C
(63°F)		 20°C
(68°F)		 19°C
(67°F)		 15°C
(59°F)		 8°C
(47°F)		 0°C
(33°F)		 -6°C
(22°F)
Average low -13°C
(9°F)		 -12°C
(11°F)		 -7°C
(19°F)		 -0°C
(32°F)		 5°C
(42°F)		 11°C
(51°F)		 14°C
(58°F)		 14°C
(57°F)		 10°C
(50°F)		 4°C
(40°F)		 -4°C
(26°F)		 -10°C
(15°F)
Mean minimum -23°C
(-10°F)		 -23°C
(-9°F)		 -20°C
(-4°F)		 -8°C
(18°F)		 -1°C
(30°F)		 4°C
(40°F)		 9°C
(48°F)		 8°C
(47°F)		 2°C
(36°F)		 -2°C
(28°F)		 -13°C
(8°F)		 -20°C
(-4°F)
Minimum -31°C
(-24°F)		 -25°C
(-12°F)		 -24°C
(-10°F)		 -15°C
(6°F)		 -3°C
(27°F)		 0°C
(33°F)		 7°C
(46°F)		 6°C
(44°F)		 -1°C
(30°F)		 -6°C
(21°F)		 -19°C
(-1°F)		 -25°C
(-13°F)

Compare climate in Guilford with other places

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

Monthly average precipitation in Guilford, Maine, United States §

Guilford usually has the most precipitation in April, October and December, with an average of 11 rainy days and 127 mm (5.0 inches) of precipitation per month.The driest months in Guilford are February, March and September. On average, 81 mm (3.2 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Guilford, 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) 90 (3.5) 85 (3.3) 77 (3.0) 126 (4.9) 98 (3.9) 91 (3.6) 105 (4.1) 91 (3.6) 81 (3.2) 135 (5.3) 115 (4.5) 119 (4.7)
Average precipitation days (≥ 1 mm) 9 10 9 12 11 12 13 12 9 10 11 11

Monthly sunshine hours in Guilford, Maine, United States §

The sunniest months in Guilford are June, July and August, when the sun shines an average of 10 hours 34 minutes a day.Least sunny months in Guilford: January, November and December receive an average of 5 hours 5 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Guilford, 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 134 181 248 224 283 323 324 324 285 197 170 164
Mean daily daylight hours 9h 11m 10h 24m 11h 57m 13h 32m 14h 53m 15h 33m 15h 11m 13h 59m 12h 28m 10h 53m 9h 30m 8h 47m

Solar UV radiation in Guilford, Maine, United States §

Guilford experiences the highest level of ultraviolet (UV) radiation in April, May and June, when the maximum UV index can reach values of 8 - 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 Guilford UV Index data.

Average daily maximum UV levels by month for Guilford, 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 8 8 7 5 3 2