Walnut Creek (CA) monthly weather averages

Contents

Average daytime temperature

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

Walnut Creek average temperature chart (Celsius) Walnut Creek average temperature chart (Fahrenheit)
Average monthly temperatures in Walnut Creek (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 12.8 15.4 16.7 18.9 21.4 24.2 25.7 25.6 25.3 22.6 17.1 13
°F 55.1 59.7 62 66.1 70.5 75.6 78.3 78.1 77.5 72.7 62.7 55.5

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.

Walnut Creek monthly rainfall chart (mm) Walnut Creek monthly rainfall chart (inches)
Average monthly rainfall in Walnut Creek (mm and inches)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
mm 113 84 77 40 9 4 2 3 7 32 78 86
inches 4.5 3.3 3 1.6 0.4 0.1 0.1 0.1 0.3 1.3 3.1 3.4
Rainy days 10 9 10 6 2 1 1 1 2 4 8 9

Average annual rainfall in Walnut Creek: 450.034mm (177.2 inches)

Average daily sunshine

The bar chart below shows the average daily sunshine hours in Walnut Creek

Walnut Creek average daily sunshine chart
Average daily sunshine Walnut Creek
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Hrs sunshine 6.1 7.9 9.4 11.3 12.1 12.4 12.2 11.3 10.6 9.2 6.6 5.5

Day / night temperatures

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

Walnut Creek average minimum / maximum temperatures (Celsius) Walnut Creek average minimum / maximum temperatures (Fahrenheit)
Maximum and minimum daily temperatures in Walnut Creek (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Min °C 4.4 6.2 6.9 7.8 9.7 11.7 12.6 12.9 12.6 10.5 7.5 4.8
Max °C 13.1 15.6 16.9 19.2 21.7 24.5 26.1 26 25.6 22.9 17.3 13.3
Min °F 39.8 43.2 44.4 46 49.5 53.1 54.6 55.1 54.7 50.9 45.5 40.6
Max °F 47.7 51.6 53.4 56.3 60.3 64.6 66.7 66.9 66.4 62.1 54.3 48.2

Sea temperature

The graph below shows the average sea temperature.

Walnut Creek average sea temperature chart (Celsius) Walnut Creek average sea temperature chart (Fahrenheit)
Average sea temperature around Walnut Creek in degrees centigrade and fahrenheit
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 12.4 12.2 12.2 11.8 11.8 12.2 13.1 14 14.4 14.2 13.6 12.7
°F 54.2 54 53.9 53.3 53.2 53.9 55.5 57.2 57.9 57.6 56.4 54.9

Wind speed

The graph below shows the average wind speed.

Walnut Creek average winspeed by month (km/h) Walnut Creek average winspeed by month (mph)
Average wind speed in Walnut Creek (mph and kmh)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
km/h 12 14 16 18 19 19 19 18 16 13 12 12
mph 7 9 10 11 12 12 12 11 10 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.

Walnut Creek relative humidity averages
Average relative humidity in Walnut Creek
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
80% 77% 72% 68% 65% 64% 64% 66% 65% 68% 76% 80%

Other monthly averages

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Beta

Current (hourly) weather 15 day forecast

Walnut Creek weather stats

Walnut Creek weather statistics
Hottest month: August 25.6°C 78.1°F
Driest month: July 2mm 0.1ins
Sunniest month: April 11.3hrs
Coldest month: January 12.8°C 55°F
Wettest month: January 113mm 4.4ins
Warmest sea: September 14.4°C 57.9°F
Map showing location of Walnut Creek (37.90631, -122.06496) Walnut Creek map pin © Google

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