Pasco (WA) monthly weather averages

Average daytime temperature

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

Pasco average temperature chart (Celsius) Pasco average temperature chart (Fahrenheit)
Average monthly temperatures in Pasco (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 4.5 9.1 14.4 18.9 23.7 28.1 31.8 31.1 25.8 18.7 10.1 4.8
°F 40 48.3 57.9 65.9 74.6 82.5 89.2 88.1 78.5 65.6 50.2 40.6

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.

Pasco monthly rainfall chart (mm) Pasco monthly rainfall chart (inches)
Average monthly rainfall in Pasco (mm and inches)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
mm 27 18 17 13 16 11 5 8 9 15 26 28
inches 1.1 0.7 0.7 0.5 0.6 0.4 0.2 0.3 0.4 0.6 1 1.1
Rainy days 11 9 9 7 7 5 3 3 4 5 11 11

Average annual rainfall in Pasco: 121.267mm (47.7 inches)

Average daily sunshine

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

Pasco average daily sunshine chart
Average daily sunshine Pasco
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Hrs sunshine 2.1 3.6 6.2 8 9.9 11.5 13 11.7 9.5 6.7 2.6 1.7

Day / night temperatures

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

Pasco average minimum / maximum temperatures (Celsius) Pasco average minimum / maximum temperatures (Fahrenheit)
Maximum and minimum daily temperatures in Pasco (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Min °C -2.9 -0.7 1.7 4.6 8.4 12.6 15 14.7 9.8 4.4 1.3 -2.4
Max °C 4.7 9.3 14.7 19.2 24.1 28.5 32.2 31.6 26.2 19 10.4 5
Min °F 26.9 30.7 35.1 40.3 47 54.6 59 58.4 49.6 39.9 34.3 27.8
Max °F 33.6 39.7 46.8 53.4 61.2 68.9 74.5 73.6 64.4 53.1 42.4 34.3

Sea temperature

The graph below shows the average sea temperature.

Pasco average sea temperature chart (Celsius) Pasco average sea temperature chart (Fahrenheit)
Average sea temperature around Pasco in degrees centigrade and fahrenheit
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 8.3 8.3 8.3 8.6 9.4 10.9 12.5 13.4 13 11.6 10 8.8
°F 47 46.9 47 47.5 49 51.6 54.6 56.2 55.4 52.9 50 47.9

Wind speed

The graph below shows the average wind speed.

Pasco average winspeed by month (km/h) Pasco average winspeed by month (mph)
Average wind speed in Pasco (mph and kmh)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
km/h 13 13 14 16 15 15 14 13 13 12 12 12
mph 8 8 9 10 9 9 9 8 8 7 8 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.

Pasco relative humidity averages
Average relative humidity in Pasco
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
78% 74% 64% 57% 52% 47% 39% 41% 50% 61% 75% 80%