Ephrata (WA) monthly weather averages

Average daytime temperature

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

Ephrata average temperature chart (Celsius) Ephrata average temperature chart (Fahrenheit)
Average monthly temperatures in Ephrata (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 0.7 5.9 11.3 16.3 22.1 26.5 30.9 30.3 24.6 16.8 7.3 1.4
°F 33.3 42.6 52.3 61.3 71.8 79.8 87.6 86.6 76.3 62.3 45.1 34.5

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.

Ephrata monthly rainfall chart (mm) Ephrata monthly rainfall chart (inches)
Average monthly rainfall in Ephrata (mm and inches)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
mm 24 15 16 14 15 16 4 6 8 13 25 28
inches 0.9 0.6 0.6 0.6 0.6 0.6 0.1 0.2 0.3 0.5 1 1.1
Rainy days 11 9 9 7 7 6 4 4 5 6 11 12

Average annual rainfall in Ephrata: 110.067mm (43.3 inches)

Average daily sunshine

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

Ephrata average daily sunshine chart
Average daily sunshine Ephrata
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Hrs sunshine 2.2 3.7 5.9 7.5 9.2 10.3 11.8 10.7 8.7 6.1 2.5 1.7

Day / night temperatures

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

Ephrata average minimum / maximum temperatures (Celsius) Ephrata average minimum / maximum temperatures (Fahrenheit)
Maximum and minimum daily temperatures in Ephrata (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Min °C -6.7 -2.9 -0.4 3 8 12.1 15.4 14.7 9.8 3.7 -0.9 -5.6
Max °C 0.9 6.1 11.6 16.6 22.5 26.9 31.3 30.7 25 17.2 7.5 1.6
Min °F 19.9 26.8 31.4 37.4 46.3 53.8 59.6 58.5 49.6 38.6 30.4 22
Max °F 26.8 34.9 42.1 49.6 59.4 67.1 73.9 72.9 63.3 50.7 37.9 28.4

Sea temperature

The graph below shows the average sea temperature.

Ephrata average sea temperature chart (Celsius) Ephrata average sea temperature chart (Fahrenheit)
Average sea temperature around Ephrata in degrees centigrade and fahrenheit
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 7.9 7.8 7.9 8.2 9.1 10.6 12.2 13.1 12.6 11.1 9.5 8.3
°F 46.2 46 46.2 46.8 48.3 51 54 55.6 54.8 52.1 49.1 47

Wind speed

The graph below shows the average wind speed.

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

Ephrata relative humidity averages
Average relative humidity in Ephrata
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
78% 74% 64% 57% 53% 50% 45% 47% 56% 65% 76% 80%