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Monthly climate in Leavenworth, Washington, United States

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Leavenworth features a humid continental climate (Dsb).Temperatures typically range between -3 °C (26 °F) and 17 °C (62 °F) through the year, but rarely can drop to -22 °C (-6 °F) or can rise to as high as 37 °C (98 °F).The average annual precipitation amounts to about 966 mm (38.0 inches) and receives 137 rainy days on the 1 mm (0.04 inches) threshold annually.Leavenworth enjoys an average of 2948 hours of sunshine throughout the year, and daylight varies from 8 hours 29 minutes to 15 hours 54 minutes per day.

Monthly average temperatures in Leavenworth, Washington, United States §

The warmest months in Leavenworth are June, July and August, with daily mean temperatures ranging from 12 to 17 °C (55 - 62 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from -3 to -3 °C (26 - 27 °F) throughout the day. On average each year, Leavenworth experiences 26 days above 25 °C (77.0 °F) and 157 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Leavenworth, Washington, 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 5°C
(42°F)		 7°C
(46°F)		 15°C
(60°F)		 21°C
(70°F)		 26°C
(79°F)		 37°C
(98°F)		 32°C
(91°F)		 34°C
(93°F)		 31°C
(88°F)		 22°C
(72°F)		 12°C
(54°F)		 11°C
(52°F)
Mean maximum 4°C
(39°F)		 5°C
(42°F)		 10°C
(51°F)		 16°C
(61°F)		 23°C
(75°F)		 27°C
(81°F)		 31°C
(88°F)		 32°C
(90°F)		 27°C
(81°F)		 18°C
(64°F)		 11°C
(52°F)		 6°C
(44°F)
Average high -1°C
(31°F)		 -0°C
(32°F)		 4°C
(40°F)		 8°C
(47°F)		 15°C
(59°F)		 18°C
(65°F)		 23°C
(74°F)		 24°C
(75°F)		 18°C
(65°F)		 10°C
(50°F)		 4°C
(39°F)		 -1°C
(31°F)
Daily mean -3°C
(26°F)		 -3°C
(26°F)		 0°C
(33°F)		 4°C
(39°F)		 9°C
(49°F)		 12°C
(55°F)		 16°C
(61°F)		 17°C
(62°F)		 12°C
(54°F)		 5°C
(41°F)		 1°C
(33°F)		 -3°C
(27°F)
Average low -6°C
(22°F)		 -6°C
(21°F)		 -3°C
(26°F)		 -1°C
(31°F)		 4°C
(39°F)		 7°C
(44°F)		 9°C
(48°F)		 10°C
(49°F)		 6°C
(44°F)		 1°C
(33°F)		 -2°C
(28°F)		 -6°C
(22°F)
Mean minimum -16°C
(4°F)		 -16°C
(3°F)		 -11°C
(12°F)		 -7°C
(20°F)		 -2°C
(29°F)		 1°C
(34°F)		 4°C
(39°F)		 4°C
(39°F)		 0°C
(33°F)		 -7°C
(20°F)		 -8°C
(18°F)		 -15°C
(5°F)
Minimum -21°C
(-6°F)		 -21°C
(-5°F)		 -14°C
(8°F)		 -11°C
(12°F)		 -3°C
(27°F)		 -1°C
(30°F)		 3°C
(38°F)		 2°C
(36°F)		 -3°C
(27°F)		 -11°C
(12°F)		 -12°C
(11°F)		 -22°C
(-6°F)

Compare climate in Leavenworth with other places

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

Monthly average precipitation in Leavenworth, Washington, United States §

Leavenworth usually has the most precipitation in January, February and December, with an average of 17 rainy days and 149 mm (5.9 inches) of precipitation per month.The driest months in Leavenworth are June, July and August. On average, 15 mm (0.6 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Leavenworth, Washington, 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) 144 (5.7) 151 (6.0) 86 (3.4) 72 (2.8) 48 (1.9) 31 (1.2) 6 (0.2) 6 (0.2) 47 (1.9) 102 (4.0) 120 (4.7) 151 (5.9)
Average precipitation days (≥ 1 mm) 16 18 15 13 10 8 2 1 8 12 16 18

Monthly sunshine hours in Leavenworth, Washington, United States §

The sunniest months in Leavenworth are June, July and August, when the sun shines an average of 12 hours 18 minutes a day.Least sunny months in Leavenworth: January, November and December receive an average of 3 hours 32 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Leavenworth, Washington, 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 88 143 228 272 347 364 410 357 281 218 134 102
Mean daily daylight hours 8h 55m 10h 16m 11h 57m 13h 40m 15h 9m 15h 54m 15h 29m 14h 9m 12h 29m 10h 47m 9h 16m 8h 29m

Solar UV radiation in Leavenworth, Washington, United States §

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

Average daily maximum UV levels by month for Leavenworth, Washington, 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 6 7 9 10 10 9 8 5 3 2