Dayton (WA) monthly weather averages

Contents

Average daytime temperature

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

Dayton average temperature chart (Celsius) Dayton average temperature chart (Fahrenheit)
Average monthly temperatures in Dayton (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 2.2 5.9 9.3 13.3 17.9 23 28.1 27.8 22.6 15.9 7.4 2.8
°F 36 42.6 48.7 55.9 64.3 73.5 82.6 82.1 72.6 60.6 45.3 37.1

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.

Dayton monthly rainfall chart (mm) Dayton monthly rainfall chart (inches)
Average monthly rainfall in Dayton (mm and inches)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
mm 68 49 52 42 41 33 15 20 25 42 66 71
inches 2.7 1.9 2.1 1.6 1.6 1.3 0.6 0.8 1 1.6 2.6 2.8
Rainy days 12 11 11 9 9 7 4 5 6 7 12 13

Average annual rainfall in Dayton: 450.633mm (177.4 inches)

Average daily sunshine

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

Dayton average daily sunshine chart
Average daily sunshine Dayton
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Hrs sunshine 2.4 3.9 6.4 8.1 9.8 11.3 13.6 12.2 9.8 7 2.8 2.1

Day / night temperatures

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

Dayton average minimum / maximum temperatures (Celsius) Dayton average minimum / maximum temperatures (Fahrenheit)
Maximum and minimum daily temperatures in Dayton (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Min °C -5.2 -2.7 -1 1.2 4.6 8.2 10.7 10.6 6.7 2.2 -1.2 -4.6
Max °C 2.4 6.1 9.6 13.6 18.3 23.4 28.6 28.3 23 16.2 7.6 3
Min °F 22.6 27.1 30.3 34.2 40.2 46.8 51.2 51 44 36 29.8 23.7
Max °F 29.5 35.1 39.7 45.3 52.5 60.4 67.3 66.9 58.6 48.6 37.8 30.6

Sea temperature

The graph below shows the average sea temperature.

Dayton average sea temperature chart (Celsius) Dayton average sea temperature chart (Fahrenheit)
Average sea temperature around Dayton in degrees centigrade and fahrenheit
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 8.2 8.1 8.2 8.5 9.4 10.9 12.6 13.7 13.2 11.6 9.9 8.7
°F 46.8 46.6 46.8 47.3 48.9 51.6 54.7 56.7 55.8 53 49.9 47.6

Wind speed

The graph below shows the average wind speed.

Dayton average winspeed by month (km/h) Dayton average winspeed by month (mph)
Average wind speed in Dayton (mph and kmh)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
km/h 14 14 16 17 16 16 14 14 14 13 13 13
mph 9 9 10 10 10 10 9 9 9 8 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.

Dayton relative humidity averages
Average relative humidity in Dayton
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
79% 75% 65% 58% 54% 49% 40% 41% 50% 62% 77% 81%

Other monthly averages

UV index Best time to go?

Beta

Current (hourly) weather 15 day forecast

Dayton weather stats

Dayton weather statistics
Hottest month: July 28.1°C 82.6°F
Driest month: July 15mm 0.6ins
Sunniest month: July 13.6hrs
Coldest month: January 2.2°C 36°F
Wettest month: December 71mm 2.8ins
Warmest sea: August 13.7°C 56.7°F
Map showing location of Dayton (46.32375, -117.97244) Dayton map pin © Google

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