Heppner (OR) monthly weather averages

Contents

Average daytime temperature

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

Heppner average temperature chart (Celsius) Heppner average temperature chart (Fahrenheit)
Average monthly temperatures in Heppner (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 4.8 8.2 11.2 14.7 19.5 24.3 28.6 28 23.3 17.1 9.5 5.1
°F 40.6 46.8 52.2 58.5 67.1 75.7 83.5 82.5 74 62.8 49 41.2

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.

Heppner monthly rainfall chart (mm) Heppner monthly rainfall chart (inches)
Average monthly rainfall in Heppner (mm and inches)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
mm 40 30 37 34 35 24 9 17 19 26 45 42
inches 1.6 1.2 1.4 1.3 1.4 0.9 0.4 0.7 0.7 1 1.8 1.7
Rainy days 12 10 10 8 7 6 3 4 5 6 11 12

Average annual rainfall in Heppner: 283.134mm (111.5 inches)

Average daily sunshine

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

Heppner average daily sunshine chart
Average daily sunshine Heppner
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Hrs sunshine 2.6 4.1 6.6 8.2 10.1 11.5 13.1 11.8 9.8 7 3 2.1

Day / night temperatures

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

Heppner average minimum / maximum temperatures (Celsius) Heppner average minimum / maximum temperatures (Fahrenheit)
Maximum and minimum daily temperatures in Heppner (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Min °C -4 -1.9 -0.1 1.6 5 8.6 10.8 10.8 6.9 2.6 -0.7 -3.6
Max °C 5 8.5 11.5 15.1 19.9 24.7 29.1 28.5 23.8 17.5 9.7 5.4
Min °F 24.8 28.7 31.8 34.8 40.9 47.4 51.4 51.4 44.3 36.6 30.7 25.6
Max °F 32.9 37.9 42.3 46.9 54.3 61.9 67.8 67.3 59.5 50 40.1 33.6

Sea temperature

The graph below shows the average sea temperature.

Heppner average sea temperature chart (Celsius) Heppner average sea temperature chart (Fahrenheit)
Average sea temperature around Heppner in degrees centigrade and fahrenheit
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 8.8 8.7 8.8 9 9.8 11.3 12.9 13.8 13.4 12.1 10.5 9.3
°F 47.9 47.7 47.8 48.3 49.7 52.3 55.2 56.8 56.1 53.7 50.9 48.7

Wind speed

The graph below shows the average wind speed.

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

Heppner relative humidity averages
Average relative humidity in Heppner
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
77% 73% 62% 56% 51% 47% 39% 41% 50% 61% 75% 79%

Other monthly averages

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Beta

Current (hourly) weather 15 day forecast

Heppner weather stats

Heppner weather statistics
Hottest month: July 28.6°C 83.5°F
Driest month: July 9mm 0.4ins
Sunniest month: July 13.1hrs
Coldest month: January 4.8°C 40.6°F
Wettest month: November 45mm 1.8ins
Warmest sea: August 13.8°C 56.8°F
Map showing location of Heppner (45.35318, -119.5578) Heppner map pin © Google

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