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Monthly climate in Millsboro, Delaware, United States

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Millsboro features a humid subtropical climate (Cfa).Temperatures typically range between 4 °C (40 °F) and 27 °C (80 °F) through the year, but rarely can drop to -14 °C (6 °F) or can rise to as high as 37 °C (99 °F).The average annual precipitation amounts to about 1256 mm (49.4 inches) and receives 130 rainy days on the 1 mm (0.04 inches) threshold annually.Millsboro enjoys an average of 3235 hours of sunshine throughout the year, and daylight varies from 9 hours 30 minutes to 14 hours 47 minutes per day.

Monthly average temperatures in Millsboro, Delaware, United States §

The warmest months in Millsboro are June, July and August, with daily mean temperatures ranging from 24 to 27 °C (75 - 80 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 4 to 7 °C (40 - 44 °F) throughout the day. On average each year, Millsboro experiences 105 days above 25 °C (77.0 °F) and 39 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Millsboro, Delaware, 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 21°C
(71°F)		 24°C
(76°F)		 29°C
(84°F)		 32°C
(89°F)		 34°C
(93°F)		 34°C
(93°F)		 37°C
(99°F)		 36°C
(97°F)		 34°C
(94°F)		 34°C
(94°F)		 26°C
(79°F)		 21°C
(70°F)
Mean maximum 19°C
(67°F)		 20°C
(69°F)		 25°C
(78°F)		 28°C
(83°F)		 32°C
(90°F)		 33°C
(92°F)		 35°C
(96°F)		 34°C
(94°F)		 32°C
(91°F)		 30°C
(86°F)		 24°C
(76°F)		 19°C
(66°F)
Average high 8°C
(46°F)		 10°C
(51°F)		 13°C
(55°F)		 18°C
(65°F)		 23°C
(74°F)		 28°C
(82°F)		 31°C
(87°F)		 29°C
(85°F)		 26°C
(80°F)		 22°C
(71°F)		 15°C
(59°F)		 10°C
(51°F)
Daily mean 4°C
(40°F)		 6°C
(43°F)		 8°C
(47°F)		 14°C
(57°F)		 19°C
(66°F)		 24°C
(75°F)		 27°C
(80°F)		 26°C
(78°F)		 23°C
(73°F)		 18°C
(64°F)		 10°C
(51°F)		 7°C
(44°F)
Average low 0°C
(33°F)		 2°C
(36°F)		 4°C
(40°F)		 9°C
(49°F)		 14°C
(58°F)		 20°C
(68°F)		 23°C
(74°F)		 22°C
(73°F)		 19°C
(67°F)		 14°C
(58°F)		 6°C
(43°F)		 3°C
(37°F)
Mean minimum -9°C
(16°F)		 -7°C
(20°F)		 -4°C
(26°F)		 2°C
(37°F)		 8°C
(46°F)		 15°C
(59°F)		 18°C
(65°F)		 18°C
(65°F)		 13°C
(56°F)		 6°C
(44°F)		 -2°C
(28°F)		 -5°C
(24°F)
Minimum -14°C
(6°F)		 -12°C
(10°F)		 -6°C
(22°F)		 1°C
(33°F)		 5°C
(41°F)		 12°C
(53°F)		 16°C
(61°F)		 16°C
(61°F)		 10°C
(51°F)		 4°C
(40°F)		 -4°C
(25°F)		 -9°C
(17°F)

Compare climate in Millsboro with other places

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

Monthly average precipitation in Millsboro, Delaware, United States §

Millsboro usually has the most precipitation in July, August and October, with an average of 13 rainy days and 138 mm (5.4 inches) of precipitation per month.The driest months in Millsboro are January, April and November. On average, 79 mm (3.1 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Millsboro, Delaware, 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) 69 (2.7) 93 (3.7) 95 (3.7) 85 (3.3) 116 (4.6) 103 (4.1) 147 (5.8) 142 (5.6) 99 (3.9) 124 (4.9) 82 (3.2) 100 (3.9)
Average precipitation days (≥ 1 mm) 8 11 9 11 12 12 12 17 11 10 7 10

Monthly sunshine hours in Millsboro, Delaware, United States §

The sunniest months in Millsboro are June, July and August, when the sun shines an average of 11 hours 20 minutes a day.Least sunny months in Millsboro: January, February and December receive an average of 5 hours 54 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Millsboro, Delaware, 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 159 186 269 287 319 343 364 335 294 258 226 191
Mean daily daylight hours 9h 48m 10h 45m 11h 58m 13h 13m 14h 16m 14h 47m 14h 30m 13h 34m 12h 23m 11h 8m 10h 3m 9h 30m

Solar UV radiation in Millsboro, Delaware, United States §

Millsboro experiences the highest level of ultraviolet (UV) radiation in May, July and August, when the maximum UV index can reach values of 10 - 10, which corresponds to the Very High category of sun exposure.January, February and December are in the Moderate exposure category. In these months, the maximum values of the UV index do not exceed 5. For more detailed information, check out our hourly Millsboro UV Index data.

Average daily maximum UV levels by month for Millsboro, Delaware, 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 7 9 10 10 10 10 8 7 5 3