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Monthly climate in College Place, Washington, United States

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification College Place features a hot-summer Mediterranean climate (Csa).Temperatures typically range between 3 °C (37 °F) and 26 °C (78 °F) through the year, but rarely can drop to -17 °C (1 °F) or can rise to as high as 46 °C (114 °F).The average annual precipitation amounts to about 421 mm (16.6 inches) and receives 82 rainy days on the 1 mm (0.04 inches) threshold annually.College Place enjoys an average of 3115 hours of sunshine throughout the year, and daylight varies from 8 hours 41 minutes to 15 hours 41 minutes per day.

Monthly average temperatures in College Place, Washington, United States §

The warmest months in College Place are June, July and August, with daily mean temperatures ranging from 21 to 26 °C (70 - 78 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 3 to 3 °C (37 - 38 °F) throughout the day. On average each year, College Place experiences 93 days above 25 °C (77.0 °F) and 61 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in College Place, 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 16°C
(60°F)		 19°C
(67°F)		 21°C
(70°F)		 29°C
(85°F)		 34°C
(94°F)		 46°C
(114°F)		 42°C
(108°F)		 41°C
(106°F)		 38°C
(100°F)		 31°C
(87°F)		 23°C
(73°F)		 20°C
(69°F)
Mean maximum 13°C
(55°F)		 16°C
(62°F)		 20°C
(69°F)		 25°C
(77°F)		 31°C
(88°F)		 35°C
(96°F)		 40°C
(104°F)		 39°C
(103°F)		 35°C
(95°F)		 25°C
(78°F)		 20°C
(68°F)		 16°C
(61°F)
Average high 6°C
(43°F)		 7°C
(45°F)		 12°C
(55°F)		 17°C
(63°F)		 23°C
(73°F)		 28°C
(82°F)		 33°C
(92°F)		 32°C
(90°F)		 26°C
(79°F)		 17°C
(64°F)		 11°C
(52°F)		 6°C
(43°F)
Daily mean 3°C
(37°F)		 3°C
(38°F)		 7°C
(45°F)		 11°C
(52°F)		 16°C
(61°F)		 21°C
(70°F)		 26°C
(78°F)		 25°C
(76°F)		 19°C
(66°F)		 11°C
(53°F)		 6°C
(44°F)		 3°C
(37°F)
Average low -0°C
(32°F)		 -1°C
(31°F)		 2°C
(36°F)		 5°C
(42°F)		 10°C
(50°F)		 14°C
(57°F)		 17°C
(63°F)		 17°C
(62°F)		 12°C
(54°F)		 6°C
(43°F)		 3°C
(37°F)		 -0°C
(32°F)
Mean minimum -9°C
(16°F)		 -11°C
(12°F)		 -5°C
(23°F)		 -1°C
(30°F)		 3°C
(38°F)		 8°C
(46°F)		 11°C
(53°F)		 9°C
(49°F)		 6°C
(42°F)		 -3°C
(27°F)		 -5°C
(23°F)		 -9°C
(16°F)
Minimum -17°C
(1°F)		 -16°C
(4°F)		 -13°C
(9°F)		 -4°C
(24°F)		 1°C
(34°F)		 7°C
(44°F)		 9°C
(49°F)		 7°C
(45°F)		 4°C
(40°F)		 -10°C
(15°F)		 -7°C
(19°F)		 -13°C
(8°F)

Compare climate in College Place with other places

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

Monthly average precipitation in College Place, Washington, United States §

College Place usually has the most precipitation in February, November and December, with an average of 12 rainy days and 63 mm (2.5 inches) of precipitation per month.The driest months in College Place are June, July and August. On average, 7 mm (0.3 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in College Place, 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) 49 (1.9) 79 (3.1) 47 (1.9) 36 (1.4) 27 (1.1) 14 (0.5) 0 (0.0) 6 (0.2) 16 (0.6) 38 (1.5) 54 (2.1) 55 (2.2)
Average precipitation days (≥ 1 mm) 10 15 10 8 4 2 0 1 3 8 10 11

Monthly sunshine hours in College Place, Washington, United States §

The sunniest months in College Place are June, July and August, when the sun shines an average of 12 hours 18 minutes a day.Least sunny months in College Place: January, February and December receive an average of 4 hours 26 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in College Place, 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 111 151 241 284 342 365 411 355 291 242 176 141
Mean daily daylight hours 9h 5m 10h 21m 11h 57m 13h 35m 14h 59m 15h 41m 15h 17m 14h 2m 12h 28m 10h 51m 9h 25m 8h 41m

Solar UV radiation in College Place, Washington, United States §

College Place 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 College Place UV Index data.

Average daily maximum UV levels by month for College Place, 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 7 5 3 2