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Monthly climate in Asotin, Washington, United States

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Asotin features a warm-summer Mediterranean climate (Csb).Temperatures typically range between 0 °C (32 °F) and 24 °C (75 °F) through the year, but rarely can drop to -24 °C (-12 °F) or can rise to as high as 42 °C (108 °F).The average annual precipitation amounts to about 568 mm (22.4 inches) and receives 107 rainy days on the 1 mm (0.04 inches) threshold annually.Asotin enjoys an average of 2985 hours of sunshine throughout the year, and daylight varies from 8 hours 38 minutes to 15 hours 43 minutes per day.

Monthly average temperatures in Asotin, Washington, United States §

The warmest months in Asotin 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 (32 - 33 °F) throughout the day. On average each year, Asotin experiences 76 days above 25 °C (77.0 °F) and 107 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Asotin, 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)		 20°C
(68°F)		 28°C
(83°F)		 31°C
(88°F)		 42°C
(108°F)		 41°C
(107°F)		 41°C
(107°F)		 37°C
(98°F)		 29°C
(84°F)		 20°C
(68°F)		 18°C
(65°F)
Mean maximum 9°C
(48°F)		 13°C
(56°F)		 18°C
(65°F)		 24°C
(75°F)		 28°C
(83°F)		 31°C
(88°F)		 38°C
(100°F)		 39°C
(102°F)		 34°C
(93°F)		 25°C
(77°F)		 17°C
(63°F)		 12°C
(54°F)
Average high 3°C
(38°F)		 4°C
(40°F)		 10°C
(50°F)		 14°C
(58°F)		 19°C
(67°F)		 24°C
(76°F)		 31°C
(88°F)		 30°C
(87°F)		 24°C
(76°F)		 15°C
(60°F)		 9°C
(48°F)		 4°C
(39°F)
Daily mean -0°C
(32°F)		 0°C
(33°F)		 5°C
(41°F)		 9°C
(48°F)		 13°C
(57°F)		 18°C
(65°F)		 24°C
(75°F)		 23°C
(74°F)		 17°C
(64°F)		 10°C
(49°F)		 4°C
(39°F)		 1°C
(33°F)
Average low -3°C
(26°F)		 -3°C
(26°F)		 -0°C
(31°F)		 3°C
(37°F)		 7°C
(46°F)		 11°C
(53°F)		 16°C
(60°F)		 16°C
(61°F)		 11°C
(51°F)		 4°C
(39°F)		 -0°C
(32°F)		 -2°C
(28°F)
Mean minimum -13°C
(10°F)		 -13°C
(10°F)		 -9°C
(17°F)		 -4°C
(26°F)		 1°C
(34°F)		 6°C
(42°F)		 10°C
(51°F)		 10°C
(50°F)		 4°C
(39°F)		 -4°C
(25°F)		 -7°C
(20°F)		 -9°C
(16°F)
Minimum -24°C
(-12°F)		 -16°C
(3°F)		 -15°C
(6°F)		 -9°C
(16°F)		 -1°C
(31°F)		 5°C
(40°F)		 8°C
(47°F)		 8°C
(47°F)		 2°C
(36°F)		 -11°C
(12°F)		 -10°C
(14°F)		 -12°C
(11°F)

Compare climate in Asotin with other places

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

Monthly average precipitation in Asotin, Washington, United States §

Asotin usually has the most precipitation in February, March and December, with an average of 13 rainy days and 72 mm (2.8 inches) of precipitation per month.The driest months in Asotin are July, August and September. On average, 14 mm (0.5 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Asotin, 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) 50 (2.0) 90 (3.5) 65 (2.5) 59 (2.3) 55 (2.2) 40 (1.6) 3 (0.1) 14 (0.5) 25 (1.0) 47 (1.9) 60 (2.4) 61 (2.4)
Average precipitation days (≥ 1 mm) 11 16 12 13 9 7 0 2 4 9 11 13

Monthly sunshine hours in Asotin, Washington, United States §

The sunniest months in Asotin are June, July and August, when the sun shines an average of 12 hours 6 minutes a day.Least sunny months in Asotin: 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 Asotin, 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 106 133 222 272 331 353 407 351 286 228 168 120
Mean daily daylight hours 9h 3m 10h 20m 11h 57m 13h 36m 15h 0m 15h 43m 15h 19m 14h 3m 12h 28m 10h 50m 9h 23m 8h 38m

Solar UV radiation in Asotin, Washington, United States §

Asotin 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 Asotin UV Index data.

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