Spokane (WA) monthly weather averages

Average daytime temperature

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

Spokane average temperature chart (Celsius) Spokane average temperature chart (Fahrenheit)
Average monthly temperatures in Spokane (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 0.8 4.9 8.7 13.7 18.8 23.5 28.2 28 22.3 14.8 5.6 1.2
°F 33.4 40.8 47.7 56.7 65.8 74.3 82.7 82.4 72.1 58.6 42 34.2

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.

Spokane monthly rainfall chart (mm) Spokane monthly rainfall chart (inches)
Average monthly rainfall in Spokane (mm and inches)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
mm 59 42 42 33 38 34 17 20 20 30 59 65
inches 2.3 1.7 1.6 1.3 1.5 1.3 0.7 0.8 0.8 1.2 2.3 2.6
Rainy days 13 11 11 9 9 8 5 5 6 7 13 14

Average annual rainfall in Spokane: 389.366mm (153.3 inches)

Average daily sunshine

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

Spokane average daily sunshine chart
Average daily sunshine Spokane
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Hrs sunshine 2.7 4.4 6.7 8.4 9.9 11.3 13.2 11.8 9.6 6.6 2.7 2.1

Day / night temperatures

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

Spokane average minimum / maximum temperatures (Celsius) Spokane average minimum / maximum temperatures (Fahrenheit)
Maximum and minimum daily temperatures in Spokane (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Min °C -5.8 -3.1 -1.2 1.6 5.5 9.6 12.1 12 7.6 2.3 -1.4 -5
Max °C 1 5.1 9 14 19.1 23.9 28.6 28.4 22.7 15.1 5.8 1.4
Min °F 21.7 26.4 29.9 34.9 41.9 49.2 53.7 53.6 45.6 36.1 29.6 23
Max °F 27.7 33.8 39 46 54.1 62.1 68.5 68.4 59.2 47.7 36 28.8

Sea temperature

The graph below shows the average sea temperature.

Spokane average sea temperature chart (Celsius) Spokane average sea temperature chart (Fahrenheit)
Average sea temperature around Spokane in degrees centigrade and fahrenheit
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 7.7 7.6 7.7 8.1 9 10.5 12.3 13.3 12.8 11.2 9.4 8.2
°F 45.9 45.7 45.9 46.5 48.1 50.9 54.1 56 55.1 52.1 48.9 46.7

Wind speed

The graph below shows the average wind speed.

Spokane average winspeed by month (km/h) Spokane average winspeed by month (mph)
Average wind speed in Spokane (mph and kmh)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
km/h 14 15 16 16 15 15 14 14 13 13 14 13
mph 9 9 10 10 9 9 9 9 8 8 9 8

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.

Spokane relative humidity averages
Average relative humidity in Spokane
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
82% 79% 70% 61% 58% 54% 45% 46% 55% 67% 82% 85%