San Mateo
California, USA
Long-term weather forecast
Long-term weather forecast

December weather forecast and climate
San Mateo, CA

A unique breathtaking view of the scenic spot of the Devil
A unique breathtaking view of the scenic spot of the Devil's Slide Sheer Cliff over the pacific Coast in San Mateo, California, cute flowers and blue sky
December, the first month of the winter, in San Mateo, is still a mild month, with temperature in the range of an average low of 39.9°F (4.4°C) and an average high of 57.9°F (14.4°C).

Temperature

January and December, with an average high-temperature of 57.9°F (14.4°C), are the coldest months.

Daylight

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

What are the coldest months in San Mateo?

January and December, with an average high-temperature of 57.9°F (14.4°C), are the coldest months in San Mateo.

What is the temperature in December in San Mateo?

In San Mateo, in December, the average high-temperature is 57.9°F (14.4°C), and the average low-temperature is 39.9°F (4.4°C).

What is the month with the shortest days in San Mateo?

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

How many hours of daylight does San Mateo have in December?

In December, the average length of the day in San Mateo is 9.6h.
Average temperature in December - San Mateo, CA
  • Average high temperature in December: 58°F

The warmest month (with the highest average high temperature) is July (82°F).
Months with the lowest average high temperature are January and December (58°F).

  • Average low temperature in December: 40°F

Months with the highest average low temperature are July and August (56°F).
Coldest months (with the lowest average low temperature) are January and December (40°F).

Average daylight in December - San Mateo, 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).