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Monthly climate in Poolesville, Maryland, United States

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Poolesville features a humid subtropical climate (Cfa).Temperatures typically range between 2 °C (36 °F) and 26 °C (79 °F) through the year, but rarely can drop to -16 °C (3 °F) or can rise to as high as 37 °C (99 °F).The average annual precipitation amounts to about 1243 mm (48.9 inches) and receives 128 rainy days on the 1 mm (0.04 inches) threshold annually.Poolesville enjoys an average of 3021 hours of sunshine throughout the year, and daylight varies from 9 hours 27 minutes to 14 hours 51 minutes per day.

Monthly average temperatures in Poolesville, Maryland, United States §

The warmest months in Poolesville are June, July and August, with daily mean temperatures ranging from 23 to 26 °C (74 - 79 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 2 to 4 °C (36 - 40 °F) throughout the day. On average each year, Poolesville experiences 108 days above 25 °C (77.0 °F) and 68 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Poolesville, Maryland, 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
(69°F)		 28°C
(82°F)		 27°C
(80°F)		 31°C
(88°F)		 33°C
(92°F)		 35°C
(96°F)		 37°C
(99°F)		 37°C
(99°F)		 35°C
(95°F)		 35°C
(95°F)		 24°C
(76°F)		 19°C
(66°F)
Mean maximum 17°C
(63°F)		 22°C
(71°F)		 25°C
(77°F)		 29°C
(84°F)		 32°C
(90°F)		 34°C
(94°F)		 36°C
(97°F)		 35°C
(95°F)		 33°C
(91°F)		 30°C
(87°F)		 23°C
(74°F)		 17°C
(63°F)
Average high 6°C
(43°F)		 9°C
(48°F)		 13°C
(55°F)		 18°C
(65°F)		 23°C
(75°F)		 28°C
(83°F)		 32°C
(89°F)		 30°C
(86°F)		 26°C
(80°F)		 21°C
(70°F)		 13°C
(55°F)		 8°C
(47°F)
Daily mean 2°C
(36°F)		 4°C
(40°F)		 7°C
(45°F)		 13°C
(55°F)		 18°C
(65°F)		 23°C
(74°F)		 26°C
(79°F)		 25°C
(77°F)		 21°C
(71°F)		 16°C
(61°F)		 8°C
(46°F)		 4°C
(39°F)
Average low -2°C
(29°F)		 -0°C
(32°F)		 2°C
(36°F)		 8°C
(46°F)		 13°C
(56°F)		 18°C
(65°F)		 21°C
(71°F)		 20°C
(69°F)		 17°C
(63°F)		 11°C
(53°F)		 3°C
(38°F)		 0°C
(32°F)
Mean minimum -11°C
(13°F)		 -10°C
(15°F)		 -6°C
(21°F)		 -0°C
(32°F)		 4°C
(40°F)		 12°C
(54°F)		 16°C
(62°F)		 15°C
(60°F)		 9°C
(48°F)		 3°C
(37°F)		 -4°C
(25°F)		 -7°C
(19°F)
Minimum -16°C
(3°F)		 -16°C
(3°F)		 -10°C
(15°F)		 -2°C
(28°F)		 1°C
(34°F)		 9°C
(49°F)		 15°C
(59°F)		 14°C
(58°F)		 4°C
(40°F)		 1°C
(33°F)		 -5°C
(22°F)		 -12°C
(11°F)

Compare climate in Poolesville with other places

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

Monthly average precipitation in Poolesville, Maryland, United States §

Poolesville usually has the most precipitation in May, July and August, with an average of 13 rainy days and 132 mm (5.2 inches) of precipitation per month.The driest months in Poolesville are January, March and November. On average, 78 mm (3.1 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Poolesville, Maryland, 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) 59 (2.3) 95 (3.7) 87 (3.4) 98 (3.9) 138 (5.4) 119 (4.7) 138 (5.4) 122 (4.8) 105 (4.1) 101 (4.0) 88 (3.4) 94 (3.7)
Average precipitation days (≥ 1 mm) 8 11 9 12 14 13 12 14 10 9 7 9

Monthly sunshine hours in Poolesville, Maryland, United States §

The sunniest months in Poolesville are June, July and August, when the sun shines an average of 10 hours 43 minutes a day.Least sunny months in Poolesville: January, February and December receive an average of 5 hours 40 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Poolesville, Maryland, 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 147 178 256 253 270 319 353 313 274 240 223 190
Mean daily daylight hours 9h 45m 10h 43m 11h 58m 13h 15m 14h 19m 14h 51m 14h 34m 13h 36m 12h 23m 11h 7m 10h 0m 9h 27m

Solar UV radiation in Poolesville, Maryland, United States §

Poolesville experiences the highest level of ultraviolet (UV) radiation in May, June and July, 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 Poolesville UV Index data.

Average daily maximum UV levels by month for Poolesville, Maryland, 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 9 8 7 5 3