Bellevue (WA) monthly weather averages

Contents

Average daytime temperature

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

Bellevue average temperature chart (Celsius) Bellevue average temperature chart (Fahrenheit)
Average monthly temperatures in Bellevue (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 7.2 9.9 11.7 14.1 17.8 20.9 23.5 23.5 20.5 15.5 10.4 7.5
°F 44.9 49.9 53 57.3 64 69.6 74.4 74.3 68.8 59.8 50.7 45.5

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.

Bellevue monthly rainfall chart (mm) Bellevue monthly rainfall chart (inches)
Average monthly rainfall in Bellevue (mm and inches)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
mm 149 105 95 66 46 41 21 31 49 87 150 151
inches 5.9 4.1 3.7 2.6 1.8 1.6 0.8 1.2 1.9 3.4 5.9 5.9
Rainy days 18 15 16 13 11 8 5 6 9 12 17 18

Average annual rainfall in Bellevue: 914.633mm (360.1 inches)

Average daily sunshine

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

Bellevue average daily sunshine chart
Average daily sunshine Bellevue
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Hrs sunshine 2.5 4.1 5.9 7.2 8.6 9.4 10.8 9.8 7.8 5 2.7 2

Day / night temperatures

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

Bellevue average minimum / maximum temperatures (Celsius) Bellevue average minimum / maximum temperatures (Fahrenheit)
Maximum and minimum daily temperatures in Bellevue (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Min °C 1.7 2.9 3.6 5.1 8 11.1 12.8 13.1 10.9 7.6 4.5 2.4
Max °C 7.3 10.1 11.9 14.3 18 21.2 23.8 23.8 20.7 15.7 10.6 7.7
Min °F 35.1 37.2 38.4 41.2 46.4 51.9 55 55.5 51.6 45.6 40 36.2
Max °F 40.1 43.7 45.9 49.5 55.4 61 64.9 65.1 60.4 52.9 45.5 41

Sea temperature

The graph below shows the average sea temperature.

Bellevue average sea temperature chart (Celsius) Bellevue average sea temperature chart (Fahrenheit)
Average sea temperature around Bellevue in degrees centigrade and fahrenheit
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 8.1 8 8.3 9.1 10.5 12 13.1 13.4 12.8 11.2 9.7 8.6
°F 46.5 46.4 47 48.4 50.9 53.6 55.5 56.2 55.1 52.1 49.5 47.5

Wind speed

The graph below shows the average wind speed.

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

Bellevue relative humidity averages
Average relative humidity in Bellevue
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
80% 77% 74% 71% 69% 67% 65% 68% 73% 79% 81% 81%

Other monthly averages

UV index Best time to go?

Beta

Current (hourly) weather 15 day forecast

Bellevue weather stats

Bellevue weather statistics
Hottest month: August 23.5°C 74.3°F
Driest month: July 21mm 0.8ins
Sunniest month: July 10.8hrs
Coldest month: January 7.2°C 45°F
Wettest month: December 151mm 5.9ins
Warmest sea: August 13.4°C 56.1°F
Map showing location of Bellevue (47.61038, -122.20068) Bellevue map pin © Google

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