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Monthly climate in McKinleyville, California, United States

Last updated: March 2, 2024

Under the Köppen–Geiger climate classification McKinleyville features a warm-summer Mediterranean climate (Csb). Temperatures typically range between 7 °C (45 °F) and 16 °C (61 °F) through the year, but rarely can drop to -3 °C (27 °F) or can rise to as high as 31 °C (88 °F). The average annual precipitation amounts to about 1322 mm (52.1 inches) and receives 93 rainy days on the 1 mm (0.04 inches) threshold annually. McKinleyville enjoys an average of 3143 hours of sunshine throughout the year, and daylight varies from 9 hours 16 minutes to 15 hours 2 minutes per day.

Monthly average temperatures in McKinleyville, California, United States §

The warmest months in McKinleyville are July, August and September, with daily mean temperatures ranging from 15 to 16 °C (59 - 61 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 7 to 8 °C (45 - 46 °F) throughout the day. On average each year, McKinleyville experiences 2 days above 25 °C (77.0 °F) and 3 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in McKinleyville, California, 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 18°C
(65°F)		 20°C
(68°F)		 18°C
(64°F)		 20°C
(69°F)		 21°C
(71°F)		 27°C
(81°F)		 24°C
(75°F)		 27°C
(81°F)		 31°C
(88°F)		 25°C
(77°F)		 19°C
(67°F)		 17°C
(63°F)
Mean maximum 16°C
(60°F)		 16°C
(61°F)		 16°C
(62°F)		 18°C
(65°F)		 19°C
(67°F)		 22°C
(72°F)		 23°C
(73°F)		 24°C
(76°F)		 27°C
(81°F)		 23°C
(73°F)		 18°C
(65°F)		 16°C
(61°F)
Average high 11°C
(52°F)		 10°C
(51°F)		 11°C
(52°F)		 13°C
(55°F)		 14°C
(58°F)		 17°C
(63°F)		 19°C
(66°F)		 20°C
(68°F)		 19°C
(67°F)		 16°C
(62°F)		 13°C
(56°F)		 11°C
(51°F)
Daily mean 8°C
(46°F)		 7°C
(45°F)		 8°C
(46°F)		 10°C
(49°F)		 11°C
(52°F)		 14°C
(57°F)		 15°C
(59°F)		 16°C
(61°F)		 15°C
(59°F)		 12°C
(54°F)		 10°C
(49°F)		 7°C
(46°F)
Average low 5°C
(41°F)		 4°C
(40°F)		 5°C
(41°F)		 6°C
(44°F)		 8°C
(47°F)		 10°C
(51°F)		 11°C
(53°F)		 12°C
(54°F)		 11°C
(53°F)		 9°C
(48°F)		 6°C
(44°F)		 5°C
(41°F)
Mean minimum 1°C
(35°F)		 0°C
(32°F)		 1°C
(35°F)		 3°C
(38°F)		 5°C
(41°F)		 7°C
(44°F)		 9°C
(48°F)		 10°C
(50°F)		 8°C
(47°F)		 5°C
(41°F)		 2°C
(35°F)		 1°C
(35°F)
Minimum -2°C
(29°F)		 -3°C
(27°F)		 -1°C
(31°F)		 2°C
(35°F)		 3°C
(37°F)		 6°C
(43°F)		 8°C
(47°F)		 9°C
(48°F)		 7°C
(45°F)		 4°C
(39°F)		 -1°C
(30°F)		 0°C
(33°F)

Compare climate in McKinleyville with other places

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

Monthly average precipitation in McKinleyville, California, United States §

McKinleyville usually has the most precipitation in January, February and March, with an average of 14 rainy days and 220 mm (8.6 inches) of precipitation per month. The driest months in McKinleyville 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 McKinleyville, California, 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) 243 (9.6) 231 (9.1) 185 (7.3) 121 (4.7) 66 (2.6) 27 (1.1) 6 (0.2) 5 (0.2) 35 (1.4) 67 (2.6) 152 (6.0) 184 (7.2)
Average precipitation days (≥ 1 mm) 14 13 16 10 6 3 0 0 3 5 10 13

Monthly sunshine hours in McKinleyville, California, United States §

The sunniest months in McKinleyville are June, July and August, when the sun shines an average of 12 hours 15 minutes a day. Least sunny months in McKinleyville: January, February and December receive an average of 4 hours 47 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in McKinleyville, California, 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 110 173 227 262 330 368 398 361 298 265 194 152
Mean daily daylight hours 9h 36m 10h 39m 11h 58m 13h 20m 14h 28m 15h 2m 14h 44m 13h 42m 12h 24m 11h 3m 9h 52m 9h 16m

Solar UV radiation in McKinleyville, California, United States §

McKinleyville experiences the highest level of ultraviolet (UV) radiation in May, June and August, when the maximum UV index can reach values of 10 - 11, which corresponds to the Very High / Extreme 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 4. For more detailed information, check out our hourly McKinleyville UV Index data.

Average daily maximum UV levels by month for McKinleyville, California, 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) 3 4 7 8 10 11 10 10 8 6 4 2

Detailed Monthly Weather Insights for McKinleyville, California, United States

Discover in-depth weather details for every month in McKinleyville. 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 McKinleyville'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.