Graton
California, USA
Long-term weather forecast
Long-term weather forecast

December weather forecast and climate
Graton, CA

December, the first month of the winter, in Graton, is still a mild month, with average temperature fluctuating between 56.8°F (13.8°C) and 36.1°F (2.3°C).

Temperature

In Graton, the average high-temperature in December marginally drops, from an enjoyable 65.5°F (18.6°C) in November, to a mild 56.8°F (13.8°C). In Graton, California, in December, the average low-temperature is 36.1°F (2.3°C).

Rainfall

In December, the rain falls for 12 days. Throughout December, 7.9" (199.9mm) of precipitation is accumulated. In Graton, during the entire year, the rain falls for 77 days and collects up to 40.8" (1035.3mm) of precipitation.

Daylight

The month with the shortest days in Graton is December, with an average of 9.5h of daylight.

What is the temperature in December in Graton?

The average high-temperature, in December, in Graton, is 56.8°F (13.8°C), while the average low-temperature is 36.1°F (2.3°C).

How many days does it rain in December in Graton?

In December, in Graton, the rain falls for 12 days. Throughout December, 7.9" (199.9mm) of precipitation is accumulated.

What is the month with the shortest days in Graton?

December has the shortest days of the year in Graton, with an average of 9.5h of daylight.

What is the average length of the day in December in Graton?

In December, the average length of the day in Graton is 9.5h.
Average temperature in December - Graton, CA
  • Average high temperature in December: 56.9°F

The warmest month (with the highest average high temperature) is August (83.5°F).
The month with the lowest average high temperature is January (56.2°F).

  • Average low temperature in December: 36.2°F

The month with the highest average low temperature is July (48.5°F).
The coldest month (with the lowest average low temperature) is January (35.9°F).

Average rainfall in December - Graton, CA
  • Average rainfall in December: 7.9"

The wettest month (with the highest rainfall) is January (8.7").
The driest month (with the lowest rainfall) is July (0").

Average rainfall days in December - Graton, CA
  • Average rainfall days in December: 12 days

The month with the highest number of rainy days is January (13 days).
The month with the lowest number of rainy days is July (0 days).

Average daylight in December - Graton, CA
  • Average daylight in December: 9.5h

The month with the longest days is June (Average daylight: 14.8h).
The month with shortest days is December (Average daylight: 9.5h).