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Monthly climate in Washington, Utah, United States

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Washington features a cold semi-arid climate (BSk).Temperatures typically range between 3 °C (38 °F) and 29 °C (85 °F) through the year, but rarely can drop to -13 °C (9 °F) or can rise to as high as 42 °C (108 °F).The average annual precipitation amounts to about 268 mm (10.6 inches) and receives 41 rainy days on the 1 mm (0.04 inches) threshold annually.Washington enjoys an average of 3590 hours of sunshine throughout the year, and daylight varies from 9 hours 38 minutes to 14 hours 39 minutes per day.

Monthly average temperatures in Washington, Utah, United States §

The warmest months in Washington are June, July and August, with daily mean temperatures ranging from 27 to 29 °C (80 - 85 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 3 to 5 °C (38 - 41 °F) throughout the day. On average each year, Washington experiences 131 days above 25 °C (77.0 °F) and 73 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Washington, Utah, 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 17°C
(63°F)		 20°C
(68°F)		 27°C
(81°F)		 31°C
(88°F)		 36°C
(97°F)		 40°C
(105°F)		 42°C
(108°F)		 41°C
(106°F)		 40°C
(104°F)		 32°C
(91°F)		 26°C
(79°F)		 19°C
(67°F)
Mean maximum 15°C
(59°F)		 18°C
(64°F)		 23°C
(74°F)		 28°C
(83°F)		 32°C
(90°F)		 36°C
(97°F)		 39°C
(103°F)		 39°C
(102°F)		 37°C
(100°F)		 28°C
(83°F)		 22°C
(73°F)		 16°C
(61°F)
Average high 9°C
(49°F)		 11°C
(53°F)		 16°C
(60°F)		 22°C
(71°F)		 26°C
(78°F)		 33°C
(92°F)		 35°C
(95°F)		 35°C
(95°F)		 30°C
(87°F)		 22°C
(72°F)		 16°C
(62°F)		 10°C
(50°F)
Daily mean 3°C
(38°F)		 5°C
(41°F)		 9°C
(49°F)		 15°C
(59°F)		 19°C
(67°F)		 27°C
(80°F)		 29°C
(85°F)		 28°C
(83°F)		 24°C
(75°F)		 15°C
(59°F)		 9°C
(49°F)		 4°C
(39°F)
Average low -2°C
(29°F)		 -1°C
(31°F)		 3°C
(39°F)		 7°C
(46°F)		 12°C
(53°F)		 18°C
(65°F)		 22°C
(72°F)		 21°C
(70°F)		 16°C
(61°F)		 7°C
(45°F)		 2°C
(36°F)		 -2°C
(29°F)
Mean minimum -8°C
(18°F)		 -8°C
(18°F)		 -3°C
(26°F)		 -0°C
(32°F)		 4°C
(40°F)		 11°C
(51°F)		 16°C
(61°F)		 16°C
(60°F)		 8°C
(47°F)		 -2°C
(30°F)		 -5°C
(23°F)		 -8°C
(18°F)
Minimum -11°C
(13°F)		 -13°C
(9°F)		 -5°C
(24°F)		 -3°C
(28°F)		 2°C
(35°F)		 8°C
(47°F)		 14°C
(57°F)		 12°C
(55°F)		 4°C
(40°F)		 -7°C
(20°F)		 -7°C
(19°F)		 -10°C
(15°F)

Compare climate in Washington with other places

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

Monthly average precipitation in Washington, Utah, United States §

Washington usually has the most precipitation in January, February and March, with an average of 7 rainy days and 46 mm (1.8 inches) of precipitation per month.The driest months in Washington are June, July and September. On average, 5 mm (0.2 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Washington, Utah, 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) 48 (1.9) 42 (1.7) 48 (1.9) 12 (0.5) 16 (0.6) 1 (0.0) 9 (0.3) 10 (0.4) 5 (0.2) 13 (0.5) 29 (1.1) 35 (1.4)
Average precipitation days (≥ 1 mm) 6 7 8 2 3 0 2 2 1 2 2 6

Monthly sunshine hours in Washington, Utah, United States §

The sunniest months in Washington are May, June and July, when the sun shines an average of 12 hours 23 minutes a day.Least sunny months in Washington: January, February and December receive an average of 6 hours 48 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Washington, Utah, 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 173 227 280 324 370 385 383 361 320 292 250 217
Mean daily daylight hours 9h 55m 10h 49m 11h 59m 13h 10m 14h 10m 14h 39m 14h 23m 13h 30m 12h 21m 11h 10m 10h 9m 9h 38m

Solar UV radiation in Washington, Utah, United States §

Washington experiences the highest level of ultraviolet (UV) radiation in June, July and August, when the maximum UV index can reach values of 11 - 12, which corresponds to the Extreme category of sun exposure.January, November and December are in the Moderate exposure category. In these months, the maximum values of the UV index do not exceed 5. For more detailed information, check out our hourly Washington UV Index data.

Average daily maximum UV levels by month for Washington, Utah, 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) 4 6 8 10 11 12 12 11 10 7 5 4