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Monthly climate in Snoqualmie, Washington, United States

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Snoqualmie features a oceanic climate (Cfb).Temperatures typically range between 1 °C (34 °F) and 17 °C (62 °F) through the year, but rarely can drop to -15 °C (6 °F) or can rise to as high as 39 °C (103 °F).The average annual precipitation amounts to about 2094 mm (82.5 inches) and receives 185 rainy days on the 1 mm (0.04 inches) threshold annually.Snoqualmie enjoys an average of 2441 hours of sunshine throughout the year, and daylight varies from 8 hours 29 minutes to 15 hours 53 minutes per day.

Monthly average temperatures in Snoqualmie, Washington, United States §

The warmest months in Snoqualmie are June, July and August, with daily mean temperatures ranging from 14 to 17 °C (57 - 62 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 1 to 2 °C (34 - 36 °F) throughout the day. On average each year, Snoqualmie experiences 18 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 Snoqualmie, 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
(51°F)		 13°C
(56°F)		 18°C
(65°F)		 26°C
(79°F)		 27°C
(81°F)		 39°C
(103°F)		 32°C
(89°F)		 34°C
(94°F)		 31°C
(87°F)		 23°C
(74°F)		 17°C
(62°F)		 12°C
(55°F)
Mean maximum 9°C
(48°F)		 10°C
(50°F)		 14°C
(58°F)		 20°C
(69°F)		 24°C
(76°F)		 28°C
(83°F)		 29°C
(85°F)		 31°C
(89°F)		 27°C
(81°F)		 19°C
(67°F)		 14°C
(57°F)		 9°C
(49°F)
Average high 5°C
(41°F)		 4°C
(40°F)		 8°C
(46°F)		 12°C
(53°F)		 16°C
(61°F)		 18°C
(65°F)		 21°C
(71°F)		 22°C
(72°F)		 19°C
(66°F)		 12°C
(54°F)		 8°C
(46°F)		 4°C
(40°F)
Daily mean 2°C
(36°F)		 1°C
(34°F)		 4°C
(39°F)		 7°C
(45°F)		 11°C
(52°F)		 14°C
(57°F)		 16°C
(62°F)		 17°C
(62°F)		 14°C
(57°F)		 8°C
(46°F)		 5°C
(40°F)		 2°C
(36°F)
Average low -0°C
(32°F)		 -2°C
(29°F)		 0°C
(33°F)		 3°C
(37°F)		 6°C
(44°F)		 9°C
(48°F)		 11°C
(52°F)		 11°C
(53°F)		 9°C
(48°F)		 4°C
(39°F)		 2°C
(36°F)		 -0°C
(31°F)
Mean minimum -8°C
(17°F)		 -12°C
(12°F)		 -5°C
(23°F)		 -4°C
(26°F)		 1°C
(35°F)		 4°C
(40°F)		 7°C
(45°F)		 6°C
(44°F)		 4°C
(39°F)		 -3°C
(28°F)		 -4°C
(25°F)		 -9°C
(17°F)
Minimum -15°C
(6°F)		 -14°C
(7°F)		 -7°C
(19°F)		 -6°C
(21°F)		 -0°C
(32°F)		 3°C
(38°F)		 6°C
(43°F)		 5°C
(42°F)		 3°C
(37°F)		 -6°C
(22°F)		 -5°C
(23°F)		 -13°C
(9°F)

Compare climate in Snoqualmie with other places

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

Monthly average precipitation in Snoqualmie, Washington, United States §

Snoqualmie usually has the most precipitation in February, November and December, with an average of 20 rainy days and 285 mm (11.2 inches) of precipitation per month.The driest months in Snoqualmie are June, July and August. On average, 55 mm (2.2 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Snoqualmie, 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) 239 (9.4) 296 (11.6) 181 (7.1) 170 (6.7) 106 (4.2) 98 (3.9) 38 (1.5) 29 (1.1) 128 (5.1) 250 (9.8) 276 (10.9) 284 (11.2)
Average precipitation days (≥ 1 mm) 17 21 19 17 15 13 8 6 13 16 20 20

Monthly sunshine hours in Snoqualmie, Washington, United States §

The sunniest months in Snoqualmie are June, July and August, when the sun shines an average of 10 hours 37 minutes a day.Least sunny months in Snoqualmie: January, February and December receive an average of 2 hours 48 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Snoqualmie, 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 75 99 179 224 287 294 356 325 246 166 103 81
Mean daily daylight hours 8h 55m 10h 16m 11h 57m 13h 40m 15h 8m 15h 53m 15h 28m 14h 9m 12h 29m 10h 47m 9h 16m 8h 29m

Solar UV radiation in Snoqualmie, Washington, United States §

Snoqualmie experiences the highest level of ultraviolet (UV) radiation in May, July and August, when the maximum UV index can reach values of 9 - 9, which corresponds to the Very High category of sun exposure.January, February 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 Snoqualmie UV Index data.

Average daily maximum UV levels by month for Snoqualmie, 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 3 6 7 9 9 9 9 7 5 3 2