Mount Vernon (WA) monthly weather averages

Contents

Average daytime temperature

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

Mount Vernon average temperature chart (Celsius) Mount Vernon average temperature chart (Fahrenheit)
Average monthly temperatures in Mount Vernon (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 7.3 9.5 11.2 13.4 16.7 19.4 21.4 21.8 19.4 15 10.2 7.5
°F 45.1 49 52.2 56.2 62.1 66.9 70.6 71.3 67 59 50.3 45.4

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.

Mount Vernon monthly rainfall chart (mm) Mount Vernon monthly rainfall chart (inches)
Average monthly rainfall in Mount Vernon (mm and inches)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
mm 107 79 74 66 52 46 31 34 52 79 113 114
inches 4.2 3.1 2.9 2.6 2 1.8 1.2 1.4 2 3.1 4.5 4.5
Rainy days 18 16 16 14 12 10 6 7 9 14 18 19

Average annual rainfall in Mount Vernon: 772.5mm (304.1 inches)

Average daily sunshine

The bar chart below shows the average daily sunshine hours in Mount Vernon

Mount Vernon average daily sunshine chart
Average daily sunshine Mount Vernon
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Hrs sunshine 2.3 3.7 5.1 6.5 8 8.7 10.4 9.5 7.2 4.7 2.7 2.1

Day / night temperatures

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

Mount Vernon average minimum / maximum temperatures (Celsius) Mount Vernon average minimum / maximum temperatures (Fahrenheit)
Maximum and minimum daily temperatures in Mount Vernon (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Min °C 0.8 1.8 2.8 4.6 7.1 9.6 10.7 10.9 8.9 5.8 3.3 1.4
Max °C 7.5 9.7 11.4 13.7 17 19.6 21.7 22.1 19.7 15.2 10.4 7.6
Min °F 33.4 35.2 37 40.2 44.7 49.3 51.3 51.6 48 42.4 37.9 34.5
Max °F 39.4 42.3 44.8 48.4 53.6 58.3 61.2 61.7 57.7 50.9 44.2 40.1

Sea temperature

The graph below shows the average sea temperature.

Mount Vernon average sea temperature chart (Celsius) Mount Vernon average sea temperature chart (Fahrenheit)
Average sea temperature around Mount Vernon in degrees centigrade and fahrenheit
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 7.7 7.6 8.1 9.2 11 12.6 13.5 13.7 12.8 10.8 9.4 8.3
°F 45.9 45.7 46.6 48.6 51.8 54.6 56.4 56.6 55 51.5 48.8 46.9

Wind speed

The graph below shows the average wind speed.

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

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.

Mount Vernon relative humidity averages
Average relative humidity in Mount Vernon
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
81% 79% 76% 73% 72% 71% 70% 72% 76% 82% 82% 83%

Other monthly averages

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Beta

Current (hourly) weather 15 day forecast

Mount Vernon weather stats

Mount Vernon weather statistics
Hottest month: August 21.8°C 71.2°F
Driest month: July 31mm 1.2ins
Sunniest month: July 10.4hrs
Coldest month: January 7.3°C 45.1°F
Wettest month: December 114mm 4.5ins
Warmest sea: August 13.7°C 56.7°F
Map showing location of Mount Vernon (48.42122, -122.33405) Mount Vernon map pin © Google

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