December weather forecast
Sand City, CA

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Weather in December

The first month of the winter, December, is still a mild month in Sand City, California, with temperature in the range of an average high of 57.2°F (14°C) and an average low of 46.4°F (8°C).

Temperature

With average high and low temperatures of 57.2°F (14°C) and 46.4°F (8°C) respectively, December is Sand City's coldest month.

Humidity

The average relative humidity in December in Sand City is 71%.

Rainfall

The month with the most rainfall is December, when the rain falls for 9.9 days and typically aggregates up to 2.4" (61mm) of precipitation.

Daylight

The month with the shortest days in Sand City is December, with an average of 9h and 42min of daylight.
On the first day of December, sunrise is at 7:01 am and sunset at 4:51 pm. On the last day of the month, sunrise is at 7:19 am and sunset at 5:02 pm PST.

Sunshine

December has the least sunshine of the year in Sand City, with an average of 6h of sunshine.

UV index

December is the month with the lowest UV index, with an average maximum UV index of 3. A UV Index estimate of 3 to 5 represents a moderate health risk from exposure to the Sun's UV rays for ordinary individuals.
Note: The average daily UV index of 3 in December transforms into the following instructions:
Ensure safety - Imperative it is to shield skin and eyes from damage. When the Sun is at its strongest around midday, find shade and limit exposure. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage.
Updated: Aug 15, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the coldest month?

During the coldest month in Sand City, December, temperatures average a high of 57.2°F (14°C) and a low of 46.4°F (8°C).

What is the temperature in December?

In Sand City, 57.2°F (14°C) is the average high-temperature and 46.4°F (8°C) is the average low-temperature during December.

What is the average humidity in December?

The average relative humidity in December is 71%.

What is the wettest month?

The month with the most rainfall is December, when the rain falls for 9.9 days and typically aggregates up to 2.4" (61mm) of precipitation.

How much does it rain in December?

In December, in Sand City, the rain falls for 9.9 days. Throughout December, 2.4" (61mm) of precipitation is accumulated.

What is the month with the shortest days?

The month with the shortest days is December, with an average of 9h and 42min of daylight.

What is the average length of the day in December in Sand City?

The average day length in December is 9h and 43min.

When is the sunrise / sunset in December?

In December, on the first day of the month, sunrise is at 7:01 am and sunset at 4:51 pm. On the last day of the month, sunrise is at 7:19 am and sunset at 5:02 pm PST.

What is the month with the least sunshine?

The month with the least sunshine is December, with an average of 6h of sunshine.

How many hours of sunshine does Sand City have in December?

In Sand City, the average sunshine duration in December is 6h.

What is the month with the lowest UV index in Sand City?

December is the month with the lowest UV index, with an average maximum UV index of 3.

What is the UV index reading in December?

In December, the average daily maximum UV index is 3. A UV Index of 3 to 5 symbolizes a medium hazard to health from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in December
Sand City, CA

Average temperature in December - Sand City, CA
  • Average high temperature in December: 57.2°F

The warmest month (with the highest average high temperature) is September (72.5°F).
The month with the lowest average high temperature is December (57.2°F).

  • Average low temperature in December: 46.4°F

The months with the highest average low temperature are August and September (55.2°F).
The coldest month (with the lowest average low temperature) is February (46°F).

Average pressure in December
Sand City, CA

Average pressure in December - Sand City, CA
  • Average pressure in December: 30.11"Hg

The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is September (29.92"Hg).

Average wind speed in December
Sand City, CA

Average wind speed in December - Sand City, CA
  • Average wind speed in December: 6.4mph

The windiest months (with the highest average wind speed) are April and May (7.5mph).
The calmest month (with the lowest average wind speed) is August (5.6mph).

Average humidity in December
Sand City, CA

Average humidity in December - Sand City, CA
  • Average humidity in December: 71%

The months with the highest relative humidity are March and May (76%).
The month with the lowest relative humidity is November (68%).

Average rainfall in December
Sand City, CA

Average rainfall in December - Sand City, CA
  • Average rainfall in December: 2.4"

The wettest month (with the highest rainfall) is December (2.4").
The driest months (with the least rainfall) are July and August (0.08").

Average rainfall days in December
Sand City, CA

Average rainfall days in December - Sand City, CA
  • Average rainfall days in December: 9.9 days

The month with the highest number of rainy days is March (12.5 days).
The month with the least rainy days is August (1.1 days).

Average daylight in December /
Average sunshine in December
Sand City, CA

Average daylight in December / Average sunshine in December - Sand City, CA
  • Average daylight in December: 9h and 4min

The month with the longest days is June (Average daylight: 14h and 36min).
The month with the shortest days is December (Average daylight: 9h and 42min).

  • Average sunshine in December: 6h

The month with the most sunshine is July (Average sunshine: 12h).
The month with the least sunshine is December (Average sunshine: 6h).

Average sunshine days in December
Sand City, CA

Average sunshine days in December - Sand City, CA
  • Average sunshine days in December: 20 days

The month with the most sunshine days is July (27.3 days).
The month with the least sunshine days is March (16.8 days).

Average UV index in December
Sand City, CA

Average UV index in December - Sand City, CA
  • Average UV index in December: 3

The months with the highest UV index are June, July, August and September (UV index 5).
The month with the lowest UV index is December (UV index 3).

Average cloud cover in December
Sand City, CA

Average cloud cover in December - Sand City, CA
  • Average cloud cover in December: 32

The month with the most cloud cover is March (Cloud cover 34).
The month with the least cloud cover is July (Cloud cover 9).

Average visibility in December
Sand City, CA

Average visibility in December - Sand City, CA
  • Average visibility in December: 6mi

The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).

Sand City, California, USA

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