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Monthly climate in Derby Line, Vermont, United States

Last updated: March 2, 2024

Under the Köppen–Geiger climate classification Derby Line features a humid continental climate (Dfb). Temperatures typically range between -8 °C (17 °F) and 20 °C (67 °F) through the year, but rarely can drop to -31 °C (-23 °F) or can rise to as high as 32 °C (90 °F). The average annual precipitation amounts to about 1234 mm (48.6 inches) and receives 170 rainy days on the 1 mm (0.04 inches) threshold annually. Derby Line enjoys an average of 2656 hours of sunshine throughout the year, and daylight varies from 8 hours 48 minutes to 15 hours 32 minutes per day.

Monthly average temperatures in Derby Line, Vermont, United States §

The warmest months in Derby Line are June, July and August, with daily mean temperatures ranging from 17 to 20 °C (62 - 67 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from -8 to -5 °C (17 - 23 °F) throughout the day. On average each year, Derby Line experiences 30 days above 25 °C (77.0 °F) and 146 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Derby Line, Vermont, 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
(52°F)		 15°C
(59°F)		 20°C
(69°F)		 24°C
(76°F)		 32°C
(89°F)		 31°C
(89°F)		 32°C
(90°F)		 32°C
(89°F)		 29°C
(85°F)		 25°C
(77°F)		 22°C
(72°F)		 14°C
(58°F)
Mean maximum 6°C
(44°F)		 9°C
(48°F)		 13°C
(56°F)		 20°C
(69°F)		 28°C
(83°F)		 28°C
(83°F)		 29°C
(85°F)		 30°C
(85°F)		 27°C
(80°F)		 22°C
(72°F)		 16°C
(60°F)		 10°C
(50°F)
Average high -4°C
(24°F)		 -2°C
(28°F)		 2°C
(35°F)		 9°C
(49°F)		 17°C
(63°F)		 22°C
(71°F)		 24°C
(76°F)		 23°C
(75°F)		 20°C
(68°F)		 13°C
(55°F)		 4°C
(39°F)		 -2°C
(29°F)
Daily mean -8°C
(17°F)		 -7°C
(20°F)		 -3°C
(27°F)		 5°C
(40°F)		 12°C
(53°F)		 17°C
(62°F)		 20°C
(67°F)		 19°C
(66°F)		 14°C
(58°F)		 8°C
(47°F)		 0°C
(33°F)		 -5°C
(23°F)
Average low -13°C
(9°F)		 -12°C
(11°F)		 -7°C
(20°F)		 0°C
(33°F)		 6°C
(44°F)		 11°C
(52°F)		 15°C
(59°F)		 14°C
(58°F)		 10°C
(50°F)		 5°C
(41°F)		 -4°C
(26°F)		 -9°C
(15°F)
Mean minimum -26°C
(-14°F)		 -24°C
(-11°F)		 -20°C
(-4°F)		 -9°C
(16°F)		 -1°C
(30°F)		 6°C
(42°F)		 9°C
(48°F)		 7°C
(45°F)		 1°C
(35°F)		 -3°C
(26°F)		 -15°C
(5°F)		 -23°C
(-9°F)
Minimum -31°C
(-23°F)		 -27°C
(-16°F)		 -23°C
(-8°F)		 -14°C
(7°F)		 -2°C
(29°F)		 0°C
(33°F)		 8°C
(46°F)		 5°C
(42°F)		 -4°C
(26°F)		 -6°C
(22°F)		 -19°C
(-2°F)		 -28°C
(-18°F)

Compare climate in Derby Line with other places

Compare temperature, precipitation, sunshine, UV index in Derby Line, Vermont, United States with other places around the world.

Monthly average precipitation in Derby Line, Vermont, United States §

Derby Line usually has the most precipitation in June, July and October, with an average of 14 rainy days and 128 mm (5.0 inches) of precipitation per month. The driest months in Derby Line are February, March and September. On average, 82 mm (3.2 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Derby Line, Vermont, 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) 88 (3.5) 82 (3.2) 80 (3.1) 112 (4.4) 103 (4.1) 116 (4.5) 119 (4.7) 104 (4.1) 83 (3.3) 149 (5.9) 114 (4.5) 84 (3.3)
Average precipitation days (≥ 1 mm) 13 15 12 16 13 14 15 16 9 15 16 16

Monthly sunshine hours in Derby Line, Vermont, United States §

The sunniest months in Derby Line are June, July and August, when the sun shines an average of 10 hours 36 minutes a day. Least sunny months in Derby Line: January, November and December receive an average of 3 hours 59 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Derby Line, Vermont, 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 104 146 216 208 271 320 327 328 282 185 134 128
Mean daily daylight hours 9h 12m 10h 25m 11h 57m 13h 31m 14h 52m 15h 32m 15h 10m 13h 58m 12h 27m 10h 54m 9h 31m 8h 48m

Solar UV radiation in Derby Line, Vermont, United States §

Derby Line experiences the highest level of ultraviolet (UV) radiation in May, June and July, when the maximum UV index can reach values of 9 - 9, 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 Derby Line UV Index data.

Average daily maximum UV levels by month for Derby Line, Vermont, 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 7 9 9 9 8 7 5 3 2

Detailed Monthly Weather Insights for Derby Line, Vermont, United States

Discover in-depth weather details for every month in Derby Line. 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 Derby Line'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.