December weather forecastBluewater, CA

December

Weather in December

December, the first month of the winter in Bluewater, is still a comfortable month, with an average temperature fluctuating between 61.2°F (16.2°C) and 47.1°F (8.4°C).

Temperature

Bluewater's December weather reaches an average high of 61.2°F (16.2°C) and an average low of 47.1°F (8.4°C), making it the coldest month.

Humidity

The months with the highest humidity are January and December, with an average relative humidity of 39%.

Rainfall

In December, in Bluewater, the rain falls for 3.6 days. Throughout December, 0.35" (9mm) of precipitation is accumulated. In Bluewater, during the entire year, the rain falls for 39.4 days and collects up to 3.9" (99mm) of precipitation.

Daylight

The month with the shortest days in Bluewater is December, with an average of 9h and 54min of daylight.
On the first day of the month, sunrise is at 6:25 am and sunset at 4:27 pm. On the last day of December, sunrise is at 6:42 am and sunset at 4:38 pm PST.

Sunshine

With an average of 7h of sunshine, December has the least sunshine of the year.

UV index

With an average maximum UV index of 3, December is the month with the lowest UV index. A UV Index value of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV rays for ordinary individuals.
Note: The maximum UV index of 3 during December translates into these guidelines:
Heed the precautions - It is counselled to guard against solar damage. It's recommended to limit sun exposure when its radiation is at its peak during midday. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses.
Updated: Feb 10, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

December, with its high-temperature average of 61.2°F (16.2°C) and a low-temperature average of 47.1°F (8.4°C), is the coldest month.

December temperatures in Bluewater vary between a high-temperature of 61.2°F (16.2°C) and a low-temperature of 47.1°F (8.4°C).

The months with the highest humidity in Bluewater, California, are January and December, with an average relative humidity of 39%.

In Bluewater, California, the average relative humidity in December is 39%.

In Bluewater, California, in December, during 3.6 rainfall days, 0.35" (9mm) of precipitation is typically accumulated.

December has the shortest days of the year, with an average of 9h and 54min of daylight.

In Bluewater, the average day length in December is 9h and 55min.

On the first day of December in Bluewater, California, sunrise is at 6:25 am and sunset at 4:27 pm. On the last day of the month, sunrise is at 6:42 am and sunset at 4:38 pm PST.

The month with the least sunshine in Bluewater is December, with an average of 7h of sunshine.

The average sunshine duration in December is 7h.

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

In December, the average daily maximum UV index in Bluewater, California, is 3. A UV Index estimate of 3 to 5 represents a moderate health threat from unprotected exposure to UV radiation.
Average high temperature
Average low temperature
Average pressure
Average wind speed
Average max. wind speed
Average wind speed gusts
Average humidity
Average rainfall
Average rainfall days
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in December
Bluewater, CA

  • Average high temperature in December: 61.2°F

The warmest month (with the highest average high temperature) is July (104.2°F).
The month with the lowest average high temperature is December (61.2°F).

  • Average low temperature in December: 47.1°F

The month with the highest average low temperature is August (85.6°F).
The coldest month (with the lowest average low temperature) is December (47.1°F).

Average pressure in December
Bluewater, CA

  • Average pressure in December: 30.06"Hg

The month with the highest atmospheric pressure is January (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.74"Hg).

Average wind speed in December
Bluewater, CA

  • Average wind speed in December: 6mph

The windiest month (with the highest average wind speed) is April (8.5mph).
The calmest month (with the lowest average wind speed) is November (5.8mph).

Average humidity in December
Bluewater, CA

  • Average humidity in December: 39%

The months with the highest relative humidity are January and December (39%).
The month with the lowest relative humidity is June (15%).

Average rainfall in December
Bluewater, CA

  • Average rainfall in December: 0.35"

The wettest month (with the highest rainfall) is July (0.59").
The driest months (with the least rainfall) are May and June (0.04").

Average rainfall days in December
Bluewater, CA

  • Average rainfall days in December: 3.6 days

The month with the highest number of rainy days is July (7.8 days).
The month with the least rainy days is May (1.2 days).

Average daylight in December /
Average sunshine in December
Bluewater, CA

  • Average daylight in December: 9h and 54min

The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 9h and 54min).

  • Average sunshine in December: 7h and 0min

The month with the most sunshine is June (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 7h and 0min).

Average sunshine days in December
Bluewater, CA

  • Average sunshine days in December: 26.8 days

The month with the most sunshine days is May (29.3 days).
The month with the least sunshine days is July (20.2 days).

Average UV index in December
Bluewater, CA

  • Average UV index in December: 3

The month with the highest UV index is July (UV index 9).
The month with the lowest UV index is December (UV index 3).

Average cloud cover in December
Bluewater, CA

  • Average cloud cover in December: 19

The month with the most cloud cover is December (Cloud cover 19).
The month with the least cloud cover is June (Cloud cover 5).

Average visibility in December
Bluewater, 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).