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

December weather forecast and climate
Pleasanton, CA

Neon-lit buildings in the CBD of downtown Pleasanton, California, distant mountains still visible in the dark evening with dark clouds in the sky
Neon-lit buildings in the CBD of downtown Pleasanton, California, distant mountains still visible in the dark evening with dark clouds in the sky
The first month of the winter, December, is still a mild month in Pleasanton, California, with average temperature fluctuating between 37°F (2.8°C) and 57°F (13.9°C).

Temperature

The coldest month is December, with an average high-temperature of 57°F (13.9°C) and an average low-temperature of 37°F (2.8°C).

Rainfall

During December, Pleasanton regularly aggregates up to 2" (51.8mm) of precipitation. Throughout the year, in Pleasanton, 14.8" (376.4mm) of rain is accumulated.

Daylight

The month with the shortest days in Pleasanton is December, with an average of 9.6h of daylight.

What is the coldest month in Pleasanton?

December is the coldest month in Pleasanton, California, with an average high-temperature of 57°F (13.9°C) and an average low-temperature of 37°F (2.8°C).

What is the temperature in December in Pleasanton?

In December, the average high-temperature is 57°F (13.9°C), and the average low-temperature is 37°F (2.8°C).

How much does it rain in Pleasanton in December?

During December, Pleasanton regularly aggregates up to 2" (51.8mm) of precipitation.

What is the month with the shortest days in Pleasanton?

December has the shortest days of the year in Pleasanton, with an average of 9.6h of daylight.

How many hours of daylight does Pleasanton have in December?

In Pleasanton, the average length of the day in December is 9.6h.
Average temperature in December - Pleasanton, CA
  • Average high temperature in December: 57°F

Warmest months (with the highest average high temperature) are July and August (89°F).
The month with the lowest average high temperature is December (57°F).

  • Average low temperature in December: 37°F

Months with the highest average low temperature are July and August (55°F).
Coldest months (with the lowest average low temperature) are January and December (37°F).

Average rainfall in December - Pleasanton, CA
  • Average rainfall in December: 2"

The wettest month (with the highest rainfall) is January (3").
The driest month (with the lowest rainfall) is July (0").

Average daylight in December - Pleasanton, CA
  • Average daylight in December: 9.6h

The month with the longest days is June (Average daylight: 14.7h).
The month with shortest days is December (Average daylight: 9.6h).