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

December weather forecast and climate
Clearlake, CA

A scenic view of the reflection and a long footbridge over the marina in Clearlake, California
A scenic view of the reflection and a long footbridge over the marina in Clearlake, California
December, the first month of the winter, in Clearlake, is still a cool month, with average temperature ranging between max 55°F (12.8°C) and min 32°F (0°C).

Temperature

The coldest months are January and December, with an average high-temperature of 55°F (12.8°C).

Rainfall

In Clearlake, 5.9" (151.1mm) of precipitation is typically accumulated. Throughout the year, in Clearlake, 31.4" (798mm) of rain is accumulated.

Daylight

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

What are the coldest months in Clearlake?

January and December, with an average high-temperature of 55°F (12.8°C), are the coldest months in Clearlake, California.

What is the temperature in December in Clearlake?

The average high-temperature, in December, in Clearlake, is 55°F (12.8°C), while the average low-temperature is 32°F (0°C).

How much does it rain in Clearlake in December?

Throughout December, in Clearlake, California, 5.9" (151.1mm) of precipitation is accumulated.

What is the month with the shortest days in Clearlake?

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

How many hours of daylight does Clearlake have in December?

In Clearlake, California, the average length of the day in December is 9.5h.
Average temperature in December - Clearlake, CA
  • Average high temperature in December: 55°F

The warmest month (with the highest average high temperature) is July (92°F).
Months with the lowest average high temperature are January and December (55°F).

  • Average low temperature in December: 32°F

The month with the highest average low temperature is July (55°F).
Coldest months (with the lowest average low temperature) are January and December (32°F).

Average rainfall in December - Clearlake, CA
  • Average rainfall in December: 6"

The wettest month (with the highest rainfall) is January (6.5").
The driest month (with the lowest rainfall) is July (0").

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

The month with the longest days is June (Average daylight: 14.9h).
The month with shortest days is December (Average daylight: 9.5h).