McKinleyville (CA) monthly weather averages

Average daytime temperature

The bar chart below shows the average monthly peak daytime temperatures at McKinleyville

McKinleyville average temperature chart (Celsius) McKinleyville average temperature chart (Fahrenheit)
Average monthly temperatures in McKinleyville (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 11.9 13 13.5 14.3 16.1 17.9 19.4 19.6 19.4 17 14.1 12.1
°F 53.4 55.4 56.2 57.8 60.9 64.2 67 67.4 67 62.6 57.3 53.7

Please note: these are the average peak daytime temperatures (usually around mid-afternoon) so do not show daytime / night highs and lows. To see the daily range of temperatures have a look at the temperature max / min chart below.

Average rainfall & rainy days

The graph below shows the average rainfall and number of rainy days per month.

McKinleyville monthly rainfall chart (mm) McKinleyville monthly rainfall chart (inches)
Average monthly rainfall in McKinleyville (mm and inches)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
mm 186 147 155 81 43 15 4 13 26 82 192 192
inches 7.3 5.8 6.1 3.2 1.7 0.6 0.1 0.5 1 3.2 7.5 7.6
Rainy days 14 14 16 11 8 5 2 3 4 9 15 15

Average annual rainfall in McKinleyville: 1053.134mm (414.6 inches)

Average daily sunshine

The bar chart below shows the average daily sunshine hours in McKinleyville

McKinleyville average daily sunshine chart
Average daily sunshine McKinleyville
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Hrs sunshine 5 5.7 7.3 9.1 10 10.4 10.3 9 8.5 6.6 4.8 4.5

Day / night temperatures

The graph below shows the daily range of temperatures for each month.

McKinleyville average minimum / maximum temperatures (Celsius) McKinleyville average minimum / maximum temperatures (Fahrenheit)
Maximum and minimum daily temperatures in McKinleyville (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Min °C 4.4 5.2 5.6 6.1 8 9.9 11.2 11.4 10.4 8.4 6.6 4.8
Max °C 12.1 13.2 13.7 14.6 16.3 18.1 19.7 19.9 19.7 17.2 14.3 12.3
Min °F 39.8 41.4 42 42.9 46.3 49.8 52.1 52.4 50.6 47.1 43.8 40.6
Max °F 46.8 48.6 49.3 50.5 53.8 57.2 59.7 60.1 59 55 50.7 47.3

Sea temperature

The graph below shows the average sea temperature.

McKinleyville average sea temperature chart (Celsius) McKinleyville average sea temperature chart (Fahrenheit)
Average sea temperature around McKinleyville in degrees centigrade and fahrenheit
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 11.4 11.2 11.2 11.2 11.7 12.4 13 13.7 13.9 13.3 12.8 12
°F 52.5 52.2 52.1 52.2 53.1 54.3 55.4 56.6 57 56 55 53.5

Wind speed

The graph below shows the average wind speed.

McKinleyville average winspeed by month (km/h) McKinleyville average winspeed by month (mph)
Average wind speed in McKinleyville (mph and kmh)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
km/h 10 12 13 14 14 15 14 13 12 11 11 11
mph 7 8 8 9 9 9 9 8 8 7 7 7

A monthly average windspeed of over 16km/h or 10mph suggests a location is fairly windy.

Relative humidity

The graph below shows the average relative humidity.

McKinleyville relative humidity averages
Average relative humidity in McKinleyville
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
84% 80% 76% 72% 71% 67% 63% 65% 67% 75% 83% 86%