TODAY APR13
TEMPERATURE56
HUMIDITY55
PRESSURE29.89
WIND COND.320 25.9
  • 6339Wed
  • 6240Thu
  • 6442Fri
  • 6543Sat
  • 6744Sun
daynightWeather update from Arcata / Eureka, Arcata Airport at

Key findings

  • The highest monthly average temperature in McKinleyville for August is 56.3 degrees
  • The lowest monthly average temperature in McKinleyville for January is 46.4 degrees
  • The most monthly precipitation in McKinleyville occurs in December with 8.8 inches
  • The air quality index in McKinleyville is 46% better than the national average
  • The pollution index in McKinleyville is 11% worse than the national average

Compare McKinleyville, CA Weather

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      McKinleyville Average Temperature

      In the event that the weather data was unavailable for this city, estimates based upon nearby cities were used.
      MonthTemp. (min)Temp. (max)Temp. (avg)Precipitation
      January39°F56°F46°F6.8"
      February40°F57°F47°F6.2"
      March41°F57°F48°F8.0"
      April42°F58°F49°F4.5"
      May45°F60°F52°F1.8"
      June48°F62°F55°F1.4"
      July51°F63°F56°F0.3"
      August51°F64°F56°F0.2"
      September48°F65°F55°F1.1"
      October46°F64°F53°F3.8"
      November43°F59°F50°F6.1"
      December39°F55°F46°F8.8"

      McKinleyville air quality index & pollution index

      In the event that the air quality/pollution data was unavailable for this city, estimates based upon nearby cities were used.
      IndexMcKinleyvilleCaliforniaNational
      Air quality index275550
      Pollution index5,642,31018,106,7265,066,862

      McKinleyville air quality information

      MeasurementTotal
      Days measured363
      Days with good air quality353
      Days with moderate air quality10
      Days w/ poor A.Q. for sensitive groups0
      Days with unhealthy air quality0

      McKinleyville air quality information

      PollutantTotal
      Arsenic0.060%
      Benzene0.080%
      Carbon Tetrachloride0.000%
      Lead0.050%
      Mercury0.050%

      Average monthly McKinleyville temperature with heat index

      McKinleyville monthly precipitation with daily maximum

      McKinleyville monthly snow depth with daily maximum

      McKinleyville monthly wind speed information

      Nearby cities with good air quality

      City, StatePopulationAir Quality IndexNational Avg.
      Arcata, CA17,7752746%
      Eureka, CA27,0022746%
      Myrtletown, CA5,3202746%
      Bayview, CA2,5272746%
      Bayview CDP (Contra Costa County), CA1,7532746%
      McKinleyville, CA16,9482746%

      Cities with similar population

      City, StatePopulationAir Quality IndexNational Avg.
      Mesquite, NV16,9534412%
      Waukee, IA16,9553922%
      Bon Air, VA16,9574412%
      Five Forks, SC16,929468%
      Country Walk, FL16,9754118%
      McKinleyville, CA16,9482746%
      Source: The McKinleyville, CA weather data displayed above is derived from the NOAA (National Oceanic and Atmospheric). Air quality and pollution data is derived from the EPA (United States Environmental Protection Agency). Air quality and pollution levels measured in a particular area may not be representative of the entire county.