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Monthly climate in Deer Park, Washington, United States

Last updated: March 2, 2024

Under the Köppen–Geiger climate classification Deer Park features a warm-summer Mediterranean climate (Csb). Temperatures typically range between -2 °C (29 °F) and 23 °C (74 °F) through the year, but rarely can drop to -24 °C (-10 °F) or can rise to as high as 43 °C (110 °F). The average annual precipitation amounts to about 597 mm (23.5 inches) and receives 104 rainy days on the 1 mm (0.04 inches) threshold annually. Deer Park enjoys an average of 3003 hours of sunshine throughout the year, and daylight varies from 8 hours 26 minutes to 15 hours 57 minutes per day.

Monthly average temperatures in Deer Park, Washington, United States §

The warmest months in Deer Park are June, July and August, with daily mean temperatures ranging from 19 to 23 °C (66 - 74 °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 - 31 °F) throughout the day. On average each year, Deer Park experiences 68 days above 25 °C (77.0 °F) and 118 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Deer Park, 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 9°C
(49°F)		 14°C
(58°F)		 19°C
(67°F)		 27°C
(81°F)		 31°C
(88°F)		 43°C
(110°F)		 42°C
(107°F)		 40°C
(104°F)		 34°C
(94°F)		 26°C
(80°F)		 15°C
(60°F)		 16°C
(61°F)
Mean maximum 7°C
(45°F)		 9°C
(48°F)		 15°C
(60°F)		 21°C
(71°F)		 28°C
(83°F)		 32°C
(90°F)		 37°C
(99°F)		 38°C
(101°F)		 32°C
(89°F)		 21°C
(70°F)		 14°C
(57°F)		 9°C
(49°F)
Average high 1°C
(34°F)		 2°C
(36°F)		 9°C
(48°F)		 13°C
(56°F)		 20°C
(68°F)		 25°C
(77°F)		 30°C
(87°F)		 30°C
(86°F)		 22°C
(73°F)		 13°C
(57°F)		 6°C
(43°F)		 1°C
(35°F)
Daily mean -2°C
(29°F)		 -2°C
(29°F)		 3°C
(38°F)		 8°C
(46°F)		 14°C
(58°F)		 19°C
(66°F)		 23°C
(74°F)		 22°C
(73°F)		 16°C
(61°F)		 8°C
(47°F)		 3°C
(37°F)		 -1°C
(31°F)
Average low -5°C
(24°F)		 -6°C
(22°F)		 -1°C
(30°F)		 2°C
(36°F)		 8°C
(47°F)		 12°C
(54°F)		 15°C
(59°F)		 15°C
(59°F)		 10°C
(50°F)		 3°C
(38°F)		 -1°C
(31°F)		 -4°C
(26°F)
Mean minimum -17°C
(2°F)		 -15°C
(5°F)		 -10°C
(14°F)		 -3°C
(27°F)		 2°C
(36°F)		 7°C
(44°F)		 10°C
(50°F)		 9°C
(49°F)		 4°C
(39°F)		 -4°C
(25°F)		 -7°C
(20°F)		 -13°C
(9°F)
Minimum -23°C
(-8°F)		 -21°C
(-6°F)		 -18°C
(0°F)		 -4°C
(25°F)		 -1°C
(31°F)		 6°C
(42°F)		 9°C
(48°F)		 6°C
(43°F)		 1°C
(35°F)		 -10°C
(14°F)		 -11°C
(12°F)		 -24°C
(-10°F)

Compare climate in Deer Park with other places

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

Monthly average precipitation in Deer Park, Washington, United States §

Deer Park usually has the most precipitation in January, November and December, with an average of 13 rainy days and 79 mm (3.1 inches) of precipitation per month. The driest months in Deer Park are June, July and August. On average, 13 mm (0.5 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Deer Park, 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) 82 (3.2) 65 (2.5) 61 (2.4) 55 (2.2) 48 (1.9) 22 (0.8) 4 (0.2) 15 (0.6) 32 (1.3) 58 (2.3) 74 (2.9) 80 (3.2)
Average precipitation days (≥ 1 mm) 13 13 11 10 8 5 1 3 5 9 13 13

Monthly sunshine hours in Deer Park, Washington, United States §

The sunniest months in Deer Park are June, July and August, when the sun shines an average of 12 hours 22 minutes a day. Least sunny months in Deer Park: January, November and December receive an average of 3 hours 45 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Deer Park, 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 92 153 225 277 342 365 415 357 287 233 143 109
Mean daily daylight hours 8h 52m 10h 14m 11h 57m 13h 41m 15h 11m 15h 57m 15h 31m 14h 11m 12h 30m 10h 46m 9h 13m 8h 26m

Solar UV radiation in Deer Park, Washington, United States §

Deer Park experiences the highest level of ultraviolet (UV) radiation in June, 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, 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 Deer Park UV Index data.

Average daily maximum UV levels by month for Deer Park, 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 9 9 7 4 3 2

Detailed Monthly Weather Insights for Deer Park, Washington, United States

Discover in-depth weather details for every month in Deer Park. 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 Deer Park'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.