Simi Valley (CA) monthly weather averages

Contents

Average daytime temperature

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

Simi Valley average temperature chart (Celsius) Simi Valley average temperature chart (Fahrenheit)
Average monthly temperatures in Simi Valley (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 16.9 17.7 17.8 19.8 21.9 25.1 28.4 28.6 27.2 24.3 20 17
°F 62.4 63.8 64.1 67.6 71.4 77.2 83.1 83.5 80.9 75.7 68 62.5

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.

Simi Valley monthly rainfall chart (mm) Simi Valley monthly rainfall chart (inches)
Average monthly rainfall in Simi Valley (mm and inches)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
mm 94 76 61 37 7 2 2 2 5 9 55 56
inches 3.7 3 2.4 1.4 0.3 0.1 0.1 0.1 0.2 0.3 2.2 2.2
Rainy days 5 6 6 3 1 1 0 1 2 2 4 5

Average annual rainfall in Simi Valley: 320.9mm (126.3 inches)

Average daily sunshine

The bar chart below shows the average daily sunshine hours in Simi Valley

Simi Valley average daily sunshine chart
Average daily sunshine Simi Valley
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Hrs sunshine 7.2 8.2 8.9 10.5 10.1 10.7 12 11.5 10 8.9 7.4 7

Day / night temperatures

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

Simi Valley average minimum / maximum temperatures (Celsius) Simi Valley average minimum / maximum temperatures (Fahrenheit)
Maximum and minimum daily temperatures in Simi Valley (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Min °C 4.8 5.9 6.3 7.8 10.2 12.8 15.1 15.5 14.1 11.2 7.3 4.8
Max °C 17.2 18 18.1 20.1 22.2 25.4 28.7 29 27.5 24.6 20.3 17.3
Min °F 40.6 42.5 43.3 46 50.4 55 59.2 59.8 57.4 52.2 45.1 40.6
Max °F 51.8 53.4 54 57 61.2 66.4 71.4 72 69.4 64.2 56.8 51.8

Sea temperature

The graph below shows the average sea temperature.

Simi Valley average sea temperature chart (Celsius) Simi Valley average sea temperature chart (Fahrenheit)
Average sea temperature around Simi Valley in degrees centigrade and fahrenheit
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 14.4 14.3 14.3 14.3 15 16.1 17.8 18.6 18.6 17.9 16.6 15.1
°F 57.9 57.7 57.7 57.8 59 61.1 64 65.5 65.5 64.3 61.9 59.1

Wind speed

The graph below shows the average wind speed.

Simi Valley average winspeed by month (km/h) Simi Valley average winspeed by month (mph)
Average wind speed in Simi Valley (mph and kmh)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
km/h 10 12 13 14 14 13 13 13 12 11 11 10
mph 7 7 8 9 9 8 8 8 7 7 7 6

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.

Simi Valley relative humidity averages
Average relative humidity in Simi Valley
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
67% 68% 67% 65% 66% 68% 68% 69% 68% 66% 67% 67%

Other monthly averages

UV index Best time to go?

Beta

Current (hourly) weather 15 day forecast

Simi Valley weather stats

Simi Valley weather statistics
Hottest month: August 28.6°C 83.5°F
Driest month: July 2mm 0.1ins
Sunniest month: August 11.5hrs
Coldest month: January 16.9°C 62.4°F
Wettest month: January 94mm 3.7ins
Warmest sea: September 18.6°C 65.5°F
Map showing location of Simi Valley (34.26945, -118.78148) Simi Valley map pin © Google

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