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Monthly climate in Pullman, Washington, United States

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Pullman features a warm-summer Mediterranean climate (Csb).Temperatures typically range between 0 °C (33 °F) and 24 °C (75 °F) through the year, but rarely can drop to -19 °C (-3 °F) or can rise to as high as 42 °C (108 °F).The average annual precipitation amounts to about 636 mm (25.1 inches) and receives 105 rainy days on the 1 mm (0.04 inches) threshold annually.Pullman enjoys an average of 3004 hours of sunshine throughout the year, and daylight varies from 8 hours 35 minutes to 15 hours 46 minutes per day.

Monthly average temperatures in Pullman, Washington, United States §

The warmest months in Pullman are June, July and August, with daily mean temperatures ranging from 18 to 24 °C (65 - 75 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 0 to 1 °C (33 - 33 °F) throughout the day. On average each year, Pullman experiences 68 days above 25 °C (77.0 °F) and 88 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Pullman, 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 12°C
(54°F)		 16°C
(61°F)		 18°C
(65°F)		 28°C
(82°F)		 31°C
(87°F)		 42°C
(108°F)		 40°C
(105°F)		 39°C
(103°F)		 35°C
(95°F)		 27°C
(81°F)		 19°C
(66°F)		 18°C
(64°F)
Mean maximum 9°C
(48°F)		 12°C
(54°F)		 17°C
(63°F)		 23°C
(73°F)		 28°C
(82°F)		 31°C
(88°F)		 37°C
(98°F)		 38°C
(100°F)		 32°C
(91°F)		 23°C
(73°F)		 16°C
(62°F)		 11°C
(53°F)
Average high 3°C
(38°F)		 4°C
(39°F)		 10°C
(50°F)		 14°C
(57°F)		 19°C
(67°F)		 24°C
(76°F)		 30°C
(87°F)		 30°C
(86°F)		 23°C
(74°F)		 15°C
(59°F)		 8°C
(47°F)		 3°C
(38°F)
Daily mean 0°C
(33°F)		 0°C
(33°F)		 5°C
(41°F)		 9°C
(48°F)		 14°C
(57°F)		 18°C
(65°F)		 24°C
(75°F)		 23°C
(74°F)		 17°C
(63°F)		 9°C
(49°F)		 4°C
(40°F)		 1°C
(33°F)
Average low -2°C
(28°F)		 -3°C
(27°F)		 1°C
(33°F)		 4°C
(39°F)		 8°C
(47°F)		 12°C
(54°F)		 16°C
(60°F)		 16°C
(61°F)		 11°C
(52°F)		 5°C
(41°F)		 1°C
(35°F)		 -2°C
(28°F)
Mean minimum -12°C
(11°F)		 -13°C
(10°F)		 -8°C
(18°F)		 -2°C
(28°F)		 2°C
(36°F)		 6°C
(44°F)		 10°C
(51°F)		 9°C
(49°F)		 5°C
(40°F)		 -4°C
(25°F)		 -5°C
(23°F)		 -10°C
(14°F)
Minimum -19°C
(-3°F)		 -18°C
(-1°F)		 -14°C
(7°F)		 -5°C
(24°F)		 1°C
(33°F)		 6°C
(42°F)		 9°C
(49°F)		 7°C
(45°F)		 3°C
(37°F)		 -11°C
(13°F)		 -8°C
(17°F)		 -18°C
(-0°F)

Compare climate in Pullman with other places

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

Monthly average precipitation in Pullman, Washington, United States §

Pullman usually has the most precipitation in February, November and December, with an average of 14 rainy days and 88 mm (3.5 inches) of precipitation per month.The driest months in Pullman are July, August and September. On average, 11 mm (0.4 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Pullman, 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) 70 (2.8) 98 (3.9) 68 (2.7) 57 (2.2) 52 (2.1) 27 (1.1) 3 (0.1) 8 (0.3) 22 (0.9) 64 (2.5) 82 (3.2) 85 (3.3)
Average precipitation days (≥ 1 mm) 13 16 12 10 7 4 0 2 4 9 13 15

Monthly sunshine hours in Pullman, Washington, United States §

The sunniest months in Pullman are June, July and August, when the sun shines an average of 12 hours 11 minutes a day.Least sunny months in Pullman: January, February and December receive an average of 3 hours 57 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Pullman, 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 104 139 223 275 337 357 410 354 286 232 165 116
Mean daily daylight hours 9h 1m 10h 19m 11h 57m 13h 37m 15h 3m 15h 46m 15h 22m 14h 5m 12h 29m 10h 49m 9h 21m 8h 35m

Solar UV radiation in Pullman, Washington, United States §

Pullman experiences the highest level of ultraviolet (UV) radiation in May, 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 Pullman UV Index data.

Average daily maximum UV levels by month for Pullman, 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 7 9 9 10 9 7 5 3 2