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Monthly climate in Spokane, Washington, United States

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Spokane features a warm-summer Mediterranean climate (Csb).Temperatures typically range between -1 °C (30 °F) and 23 °C (75 °F) through the year, but rarely can drop to -22 °C (-7 °F) or can rise to as high as 43 °C (111 °F).The average annual precipitation amounts to about 578 mm (22.8 inches) and receives 103 rainy days on the 1 mm (0.04 inches) threshold annually.Spokane enjoys an average of 3026 hours of sunshine throughout the year, and daylight varies from 8 hours 27 minutes to 15 hours 55 minutes per day.

Monthly average temperatures in Spokane, Washington, United States §

The warmest months in Spokane are June, July and August, with daily mean temperatures ranging from 19 to 23 °C (66 - 75 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from -1 to 0 °C (30 - 32 °F) throughout the day. On average each year, Spokane experiences 69 days above 25 °C (77.0 °F) and 105 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Spokane, 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 11°C
(52°F)		 15°C
(59°F)		 19°C
(67°F)		 27°C
(82°F)		 31°C
(88°F)		 43°C
(111°F)		 41°C
(106°F)		 39°C
(103°F)		 34°C
(94°F)		 27°C
(81°F)		 16°C
(61°F)		 16°C
(61°F)
Mean maximum 8°C
(47°F)		 10°C
(50°F)		 16°C
(61°F)		 22°C
(72°F)		 28°C
(83°F)		 32°C
(90°F)		 37°C
(99°F)		 38°C
(101°F)		 32°C
(90°F)		 21°C
(71°F)		 14°C
(58°F)		 10°C
(50°F)
Average high 2°C
(35°F)		 3°C
(37°F)		 9°C
(48°F)		 14°C
(57°F)		 20°C
(68°F)		 25°C
(77°F)		 30°C
(87°F)		 30°C
(86°F)		 23°C
(73°F)		 14°C
(57°F)		 7°C
(44°F)		 2°C
(36°F)
Daily mean -1°C
(30°F)		 -1°C
(30°F)		 4°C
(40°F)		 8°C
(47°F)		 14°C
(58°F)		 19°C
(66°F)		 23°C
(75°F)		 23°C
(73°F)		 17°C
(62°F)		 8°C
(47°F)		 3°C
(38°F)		 -0°C
(32°F)
Average low -4°C
(26°F)		 -5°C
(24°F)		 -0°C
(31°F)		 3°C
(38°F)		 8°C
(47°F)		 12°C
(54°F)		 15°C
(60°F)		 15°C
(60°F)		 11°C
(51°F)		 4°C
(39°F)		 0°C
(32°F)		 -3°C
(27°F)
Mean minimum -15°C
(5°F)		 -14°C
(8°F)		 -9°C
(17°F)		 -3°C
(27°F)		 2°C
(37°F)		 7°C
(45°F)		 11°C
(52°F)		 10°C
(50°F)		 4°C
(40°F)		 -4°C
(24°F)		 -7°C
(20°F)		 -11°C
(12°F)
Minimum -22°C
(-7°F)		 -18°C
(-0°F)		 -16°C
(4°F)		 -4°C
(24°F)		 -0°C
(32°F)		 6°C
(43°F)		 9°C
(49°F)		 7°C
(45°F)		 2°C
(35°F)		 -11°C
(13°F)		 -10°C
(13°F)		 -20°C
(-3°F)

Compare climate in Spokane with other places

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

Monthly average precipitation in Spokane, Washington, United States §

Spokane usually has the most precipitation in January, November and December, with an average of 13 rainy days and 76 mm (3.0 inches) of precipitation per month.The driest months in Spokane are June, July and August. On average, 12 mm (0.5 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Spokane, 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) 76 (3.0) 65 (2.6) 60 (2.4) 52 (2.1) 50 (2.0) 21 (0.8) 4 (0.1) 11 (0.5) 30 (1.2) 55 (2.2) 79 (3.1) 74 (2.9)
Average precipitation days (≥ 1 mm) 13 13 11 10 8 4 1 2 5 9 14 13

Monthly sunshine hours in Spokane, Washington, United States §

The sunniest months in Spokane are June, July and August, when the sun shines an average of 12 hours 21 minutes a day.Least sunny months in Spokane: January, February and December receive an average of 3 hours 55 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Spokane, 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 95 150 230 279 344 363 414 358 290 234 153 111
Mean daily daylight hours 8h 54m 10h 15m 11h 57m 13h 41m 15h 10m 15h 55m 15h 30m 14h 10m 12h 29m 10h 46m 9h 15m 8h 27m

Solar UV radiation in Spokane, Washington, United States §

Spokane 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 Spokane UV Index data.

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