Rancho Cucamonga (CA) monthly weather averages

Contents

Average daytime temperature

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

Rancho Cucamonga average temperature chart (Celsius) Rancho Cucamonga average temperature chart (Fahrenheit)
Average monthly temperatures in Rancho Cucamonga (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 18.2 19.6 19.8 22.2 24.9 28.6 33.1 33.2 30.6 26.8 21.6 18.3
°F 64.8 67.3 67.6 72 76.8 83.5 91.6 91.8 87 80.2 70.9 64.9

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.

Rancho Cucamonga monthly rainfall chart (mm) Rancho Cucamonga monthly rainfall chart (inches)
Average monthly rainfall in Rancho Cucamonga (mm and inches)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
mm 84 80 71 30 10 1 1 4 9 9 45 58
inches 3.3 3.1 2.8 1.2 0.4 0.1 0 0.2 0.4 0.4 1.8 2.3
Rainy days 5 5 5 3 1 0 0 1 2 2 4 4

Average annual rainfall in Rancho Cucamonga: 317mm (124.8 inches)

Average daily sunshine

The bar chart below shows the average daily sunshine hours in Rancho Cucamonga

Rancho Cucamonga average daily sunshine chart
Average daily sunshine Rancho Cucamonga
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Hrs sunshine 7.7 8.5 9 10.5 10.1 10.9 12.2 11.7 10.2 9.1 7.9 7.7

Day / night temperatures

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

Rancho Cucamonga average minimum / maximum temperatures (Celsius) Rancho Cucamonga average minimum / maximum temperatures (Fahrenheit)
Maximum and minimum daily temperatures in Rancho Cucamonga (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Min °C 4.1 5.3 6.1 7.6 10.8 13.4 16.3 16.8 14.5 11.1 6.9 4
Max °C 18.6 20 20.1 22.6 25.3 29 33.5 33.7 31 27.2 22 18.6
Min °F 39.3 41.5 43 45.7 51.4 56.1 61.3 62.2 58 51.9 44.3 39.2
Max °F 52.3 54.7 55.6 59.2 64.4 70.2 76.8 77.4 72.9 66.4 57.9 52.3

Sea temperature

The graph below shows the average sea temperature.

Rancho Cucamonga average sea temperature chart (Celsius) Rancho Cucamonga average sea temperature chart (Fahrenheit)
Average sea temperature around Rancho Cucamonga in degrees centigrade and fahrenheit
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 14.6 14.5 14.7 15 15.8 17.2 18.9 19.7 19.6 18.6 17 15.3
°F 58.2 58.1 58.4 58.9 60.5 62.9 66 67.5 67.3 65.6 62.6 59.6

Wind speed

The graph below shows the average wind speed.

Rancho Cucamonga average winspeed by month (km/h) Rancho Cucamonga average winspeed by month (mph)
Average wind speed in Rancho Cucamonga (mph and kmh)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
km/h 11 12 14 15 14 14 14 13 13 12 11 11
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.

Rancho Cucamonga relative humidity averages
Average relative humidity in Rancho Cucamonga
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
62% 62% 61% 58% 59% 60% 60% 62% 62% 61% 62% 63%

Other monthly averages

UV index Best time to go?

Beta

Current (hourly) weather 15 day forecast

Rancho Cucamonga weather stats

Rancho Cucamonga weather statistics
Hottest month: August 33.2°C 91.8°F
Driest month: July 1mm 0ins
Sunniest month: August 11.7hrs
Coldest month: January 18.2°C 64.8°F
Wettest month: January 84mm 3.3ins
Warmest sea: August 19.7°C 67.5°F
Map showing location of Rancho Cucamonga (34.1064, -117.59311) Rancho Cucamonga map pin © Google

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