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Monthly climate in Washington, Virginia, United States

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Washington features a humid subtropical climate (Cfa).Temperatures typically range between 1 °C (35 °F) and 25 °C (78 °F) through the year, but rarely can drop to -19 °C (-1 °F) or can rise to as high as 37 °C (99 °F).The average annual precipitation amounts to about 1191 mm (46.9 inches) and receives 123 rainy days on the 1 mm (0.04 inches) threshold annually.Washington enjoys an average of 3015 hours of sunshine throughout the year, and daylight varies from 9 hours 28 minutes to 14 hours 49 minutes per day.

Monthly average temperatures in Washington, Virginia, United States §

The warmest months in Washington are June, July and August, with daily mean temperatures ranging from 22 to 25 °C (73 - 78 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 1 to 4 °C (35 - 40 °F) throughout the day. On average each year, Washington experiences 107 days above 25 °C (77.0 °F) and 77 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Washington, Virginia, 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)		 27°C
(80°F)		 26°C
(79°F)		 33°C
(92°F)		 33°C
(92°F)		 35°C
(94°F)		 37°C
(99°F)		 36°C
(98°F)		 35°C
(94°F)		 34°C
(93°F)		 24°C
(76°F)		 21°C
(70°F)
Mean maximum 17°C
(63°F)		 22°C
(71°F)		 25°C
(77°F)		 29°C
(85°F)		 32°C
(89°F)		 33°C
(92°F)		 36°C
(96°F)		 34°C
(93°F)		 33°C
(91°F)		 30°C
(86°F)		 23°C
(74°F)		 17°C
(64°F)
Average high 6°C
(43°F)		 9°C
(49°F)		 13°C
(56°F)		 19°C
(66°F)		 23°C
(74°F)		 28°C
(82°F)		 31°C
(88°F)		 29°C
(85°F)		 26°C
(79°F)		 21°C
(70°F)		 13°C
(55°F)		 9°C
(48°F)
Daily mean 1°C
(35°F)		 4°C
(40°F)		 7°C
(45°F)		 13°C
(55°F)		 18°C
(65°F)		 22°C
(73°F)		 25°C
(78°F)		 24°C
(75°F)		 21°C
(69°F)		 15°C
(60°F)		 7°C
(45°F)		 4°C
(39°F)
Average low -3°C
(27°F)		 -1°C
(31°F)		 2°C
(36°F)		 7°C
(45°F)		 13°C
(55°F)		 17°C
(63°F)		 20°C
(69°F)		 19°C
(67°F)		 16°C
(61°F)		 10°C
(51°F)		 2°C
(35°F)		 -1°C
(31°F)
Mean minimum -14°C
(8°F)		 -11°C
(12°F)		 -7°C
(19°F)		 -1°C
(30°F)		 3°C
(37°F)		 11°C
(52°F)		 15°C
(59°F)		 14°C
(58°F)		 8°C
(47°F)		 1°C
(34°F)		 -5°C
(23°F)		 -9°C
(16°F)
Minimum -19°C
(-1°F)		 -17°C
(2°F)		 -10°C
(14°F)		 -3°C
(26°F)		 0°C
(32°F)		 8°C
(47°F)		 13°C
(55°F)		 13°C
(55°F)		 3°C
(38°F)		 -2°C
(29°F)		 -6°C
(21°F)		 -13°C
(9°F)

Compare climate in Washington with other places

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

Monthly average precipitation in Washington, Virginia, United States §

Washington usually has the most precipitation in May, June and August, with an average of 13 rainy days and 126 mm (5.0 inches) of precipitation per month.The driest months in Washington are January, March and November. On average, 73 mm (2.9 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Washington, Virginia, 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) 90 (3.6) 76 (3.0) 105 (4.1) 125 (4.9) 121 (4.8) 103 (4.1) 132 (5.2) 108 (4.3) 103 (4.1) 83 (3.3) 85 (3.4)
Average precipitation days (≥ 1 mm) 7 12 11 11 13 13 10 13 10 8 7 8

Monthly sunshine hours in Washington, Virginia, United States §

The sunniest months in Washington are June, July and August, when the sun shines an average of 10 hours 35 minutes a day.Least sunny months in Washington: January, February and December receive an average of 5 hours 43 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Washington, Virginia, 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 149 180 255 253 272 312 354 308 270 244 223 190
Mean daily daylight hours 9h 46m 10h 44m 11h 58m 13h 14m 14h 18m 14h 49m 14h 32m 13h 35m 12h 23m 11h 7m 10h 2m 9h 28m

Solar UV radiation in Washington, Virginia, United States §

Washington experiences the highest level of ultraviolet (UV) radiation in April, May and August, when the maximum UV index can reach values of 10 - 11, which corresponds to the Very High / Extreme 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 Washington UV Index data.

Average daily maximum UV levels by month for Washington, Virginia, 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 10 11 10 10 10 8 7 5 3