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Monthly climate in Soap Lake, Washington, United States

Last updated: March 2, 2024

Under the Köppen–Geiger climate classification Soap Lake features a cold semi-arid climate (BSk). Temperatures typically range between -2 °C (29 °F) and 25 °C (77 °F) through the year, but rarely can drop to -23 °C (-9 °F) or can rise to as high as 45 °C (113 °F). The average annual precipitation amounts to about 321 mm (12.6 inches) and receives 69 rainy days on the 1 mm (0.04 inches) threshold annually. Soap Lake enjoys an average of 3106 hours of sunshine throughout the year, and daylight varies from 8 hours 30 minutes to 15 hours 52 minutes per day.

Monthly average temperatures in Soap Lake, Washington, United States §

The warmest months in Soap Lake are June, July and August, with daily mean temperatures ranging from 21 to 25 °C (69 - 77 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from -2 to -1 °C (29 - 30 °F) throughout the day. On average each year, Soap Lake experiences 84 days above 25 °C (77.0 °F) and 95 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Soap Lake, 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)		 14°C
(57°F)		 19°C
(66°F)		 27°C
(81°F)		 33°C
(92°F)		 45°C
(113°F)		 43°C
(109°F)		 40°C
(104°F)		 37°C
(99°F)		 29°C
(84°F)		 18°C
(65°F)		 17°C
(62°F)
Mean maximum 8°C
(46°F)		 9°C
(49°F)		 17°C
(63°F)		 23°C
(74°F)		 31°C
(88°F)		 34°C
(94°F)		 39°C
(102°F)		 39°C
(102°F)		 33°C
(91°F)		 23°C
(73°F)		 16°C
(61°F)		 11°C
(51°F)
Average high 1°C
(34°F)		 3°C
(38°F)		 10°C
(50°F)		 15°C
(60°F)		 22°C
(72°F)		 27°C
(80°F)		 32°C
(89°F)		 31°C
(88°F)		 24°C
(76°F)		 15°C
(58°F)		 7°C
(45°F)		 2°C
(35°F)
Daily mean -2°C
(29°F)		 -1°C
(30°F)		 5°C
(42°F)		 10°C
(51°F)		 17°C
(62°F)		 21°C
(69°F)		 25°C
(77°F)		 24°C
(76°F)		 18°C
(65°F)		 9°C
(49°F)		 4°C
(39°F)		 -1°C
(30°F)
Average low -4°C
(24°F)		 -5°C
(24°F)		 1°C
(34°F)		 5°C
(41°F)		 11°C
(51°F)		 14°C
(58°F)		 17°C
(63°F)		 17°C
(64°F)		 12°C
(55°F)		 5°C
(41°F)		 0°C
(33°F)		 -3°C
(26°F)
Mean minimum -14°C
(8°F)		 -12°C
(10°F)		 -7°C
(20°F)		 -1°C
(30°F)		 4°C
(39°F)		 9°C
(48°F)		 12°C
(54°F)		 11°C
(52°F)		 6°C
(43°F)		 -3°C
(27°F)		 -5°C
(23°F)		 -11°C
(12°F)
Minimum -23°C
(-9°F)		 -16°C
(4°F)		 -17°C
(2°F)		 -3°C
(26°F)		 2°C
(36°F)		 7°C
(45°F)		 12°C
(53°F)		 10°C
(50°F)		 3°C
(37°F)		 -8°C
(18°F)		 -8°C
(18°F)		 -18°C
(-0°F)

Compare climate in Soap Lake with other places

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

Monthly average precipitation in Soap Lake, Washington, United States §

Soap Lake usually has the most precipitation in January, February and December, with an average of 10 rainy days and 45 mm (1.8 inches) of precipitation per month. The driest months in Soap Lake are June, July and August. On average, 5 mm (0.2 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Soap Lake, 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) 51 (2.0) 40 (1.6) 31 (1.2) 29 (1.2) 20 (0.8) 8 (0.3) 3 (0.1) 4 (0.1) 18 (0.7) 35 (1.4) 40 (1.6) 43 (1.7)
Average precipitation days (≥ 1 mm) 11 9 7 6 5 2 0 1 3 6 9 10

Monthly sunshine hours in Soap Lake, Washington, United States §

The sunniest months in Soap Lake are June, July and August, when the sun shines an average of 12 hours 36 minutes a day. Least sunny months in Soap Lake: January, November and December receive an average of 3 hours 50 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Soap Lake, 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 88 167 246 292 356 382 417 360 291 238 151 112
Mean daily daylight hours 8h 56m 10h 17m 11h 57m 13h 40m 15h 7m 15h 52m 15h 27m 14h 8m 12h 29m 10h 47m 9h 17m 8h 30m

Solar UV radiation in Soap Lake, Washington, United States §

Soap Lake 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 Soap Lake UV Index data.

Average daily maximum UV levels by month for Soap Lake, 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

Detailed Monthly Weather Insights for Soap Lake, Washington, United States

Discover in-depth weather details for every month in Soap Lake. Click through the links below for comprehensive overviews of temperature trends, precipitation levels, sunshine hours, and solar UV radiation specifics. Whether planning a visit or simply curious about Soap Lake's climate nuances, these monthly breakdowns provide the information you need for an informed understanding of what to expect throughout the year.

Each link leads to a detailed account of the typical weather conditions for that month, providing both locals and tourists with vital information to plan their daily activities, wardrobe, and travel itineraries accordingly.