Ukiah (CA) monthly weather averages

Average daytime temperature

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

Ukiah average temperature chart (Celsius) Ukiah average temperature chart (Fahrenheit)
Average monthly temperatures in Ukiah (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 11.8 13.5 14.5 16.8 20.6 24.5 27.8 27.6 26 21.7 15 11.6
°F 53.2 56.3 58 62.3 69.2 76 82.1 81.6 78.8 71 59 52.8

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.

Ukiah monthly rainfall chart (mm) Ukiah monthly rainfall chart (inches)
Average monthly rainfall in Ukiah (mm and inches)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
mm 233 175 148 71 25 10 3 6 16 63 158 203
inches 9.2 6.9 5.8 2.8 1 0.4 0.1 0.2 0.6 2.5 6.2 8
Rainy days 12 11 13 9 5 3 2 3 3 6 11 12

Average annual rainfall in Ukiah: 1025.733mm (403.8 inches)

Average daily sunshine

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

Ukiah average daily sunshine chart
Average daily sunshine Ukiah
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Hrs sunshine 6 7.3 8.7 10.6 11.4 11.6 11.6 10.5 9.9 8.3 6 5.5

Day / night temperatures

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

Ukiah average minimum / maximum temperatures (Celsius) Ukiah average minimum / maximum temperatures (Fahrenheit)
Maximum and minimum daily temperatures in Ukiah (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Min °C 1.2 2.5 2.9 3.7 6.2 8.6 10.2 10 8.2 5.6 2.9 1.4
Max °C 12.1 13.8 14.8 17.2 21 24.9 28.3 28 26.5 22.1 15.3 11.8
Min °F 34.1 36.4 37.1 38.6 43.2 47.4 50.3 50 46.7 42 37.2 34.5
Max °F 43.9 46.6 47.8 50.7 56.5 62.1 66.6 66.2 63.1 56.8 48.4 43.9

Sea temperature

The graph below shows the average sea temperature.

Ukiah average sea temperature chart (Celsius) Ukiah average sea temperature chart (Fahrenheit)
Average sea temperature around Ukiah in degrees centigrade and fahrenheit
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 11.8 11.6 11.6 11.4 11.4 11.8 12.5 13.5 13.8 13.3 12.9 12.2
°F 53.2 52.9 52.9 52.5 52.5 53.3 54.5 56.2 56.8 56 55.2 54

Wind speed

The graph below shows the average wind speed.

Ukiah average winspeed by month (km/h) Ukiah average winspeed by month (mph)
Average wind speed in Ukiah (mph and kmh)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
km/h 11 13 15 17 17 18 17 16 14 13 12 12
mph 7 8 9 10 11 11 11 10 9 8 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.

Ukiah relative humidity averages
Average relative humidity in Ukiah
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
81% 77% 73% 70% 69% 67% 66% 68% 68% 71% 79% 82%