Prosser (WA) monthly weather averages

Contents

Average daytime temperature

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

Prosser average temperature chart (Celsius) Prosser average temperature chart (Fahrenheit)
Average monthly temperatures in Prosser (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 3.4 8.3 12.8 17.1 21.9 26.2 30 29.3 24.7 18 9.2 4.4
°F 38 47 55 62.7 71.4 79.1 85.9 84.8 76.4 64.4 48.6 39.9

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.

Prosser monthly rainfall chart (mm) Prosser monthly rainfall chart (inches)
Average monthly rainfall in Prosser (mm and inches)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
mm 27 18 17 16 17 15 6 9 12 18 27 30
inches 1.1 0.7 0.7 0.6 0.7 0.6 0.2 0.3 0.5 0.7 1.1 1.2
Rainy days 10 9 8 6 6 5 2 3 4 5 10 11

Average annual rainfall in Prosser: 136.7mm (53.8 inches)

Average daily sunshine

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

Prosser average daily sunshine chart
Average daily sunshine Prosser
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Hrs sunshine 2.3 3.8 6.3 7.9 9.8 11.1 12.6 11.4 9.3 6.5 2.7 1.8

Day / night temperatures

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

Prosser average minimum / maximum temperatures (Celsius) Prosser average minimum / maximum temperatures (Fahrenheit)
Maximum and minimum daily temperatures in Prosser (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Min °C -4.8 -2 -0.1 2.8 6.6 10.5 12.4 11.9 7.9 2.6 -0.7 -3.4
Max °C 3.6 8.6 13.1 17.4 22.3 26.6 30.4 29.8 25.1 18.4 9.5 4.6
Min °F 23.5 28.4 31.8 37 43.8 50.8 54.3 53.3 46.2 36.7 30.8 26
Max °F 30.9 37.9 43.7 50.2 57.9 65.3 70.5 69.4 61.7 50.9 39.9 33.1

Sea temperature

The graph below shows the average sea temperature.

Prosser average sea temperature chart (Celsius) Prosser average sea temperature chart (Fahrenheit)
Average sea temperature around Prosser 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.

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

Prosser relative humidity averages
Average relative humidity in Prosser
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
78% 74% 63% 56% 51% 47% 41% 44% 52% 62% 75% 80%

Other monthly averages

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Beta

Current (hourly) weather 15 day forecast

Prosser weather stats

Prosser weather statistics
Hottest month: July 30°C 86°F
Driest month: July 6mm 0.2ins
Sunniest month: July 12.6hrs
Coldest month: January 3.4°C 38.1°F
Wettest month: December 30mm 1.2ins
Warmest sea: August 13.4°C 56.1°F
Map showing location of Prosser (46.2068, -119.76892) Prosser map pin © Google

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