December weather forecast
Cobb, CA

Share

Weather in December

The first month of the winter, December, is also a fresh month in Cobb, California, with an average temperature fluctuating between 38.1°F (3.4°C) and 52.7°F (11.5°C).

Temperature

December is the month when Cobb experiences its coldest temperatures, averaging a high of 52.7°F (11.5°C) and a low of 38.1°F (3.4°C).

Humidity

In Cobb, the average relative humidity in December is 72%.

Rainfall

In Cobb, in December, it is raining for 11.2 days, with typically 3.11" (79mm) of accumulated precipitation. Throughout the year, there are 79.8 rainfall days, and 17.44" (443mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January through March, November and December. In Cobb, California, during December, snow falls for 0.2 days and regularly aggregates up to 0.08" (2mm) of snow. Throughout the year, in Cobb, there are 1.8 snowfall days, and 0.98" (25mm) of snow is accumulated.

Daylight

With an average of 9h and 30min of daylight, December has the shortest days of the year in Cobb.
On the first day of the month, sunrise is at 7:11 am and sunset at 4:49 pm. On the last day of December, in Cobb, sunrise is at 7:29 am and sunset at 4:59 pm PST.

Sunshine

December has the least sunshine of the year, with an average of 5.3h of sunshine.

UV index

The months with the lowest UV index in Cobb, California, are November and December, with an average maximum UV index of 2. A UV Index estimate of 2, and below, represents a low threat to health from unprotected exposure to Sun's UV rays for the average person.
Note: A maximum daily UV index of 2 during December morphs into the following directions:
Though the majority can handle prolonged sun exposure, it is crucial to always shield babies, children, and those with fair skin. The midday Sun can be dangerous due to its intense radiation; always find shade and reduce exposure. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage. Mark this! Snow reflection can nearly double the UV radiation intensity from the Sun.
[Resources]

Frequently asked questions

What is the coldest month in Cobb?

In Cobb, December is the coldest month, with temperatures averaging a high of 52.7°F (11.5°C) and a low of 38.1°F (3.4°C).

What are the temperatures in Cobb in December?

The high-temperature in Cobb, California, during December is 52.7°F (11.5°C) and the low-temperature is 38.1°F (3.4°C). In September, the average heat index (a.k.a. 'apparent temperature', 'real feel'), which combines air temperature and relative humidity, is estimated at 86°F (30°C).

What is the average humidity in December in Cobb?

In December, the average relative humidity in Cobb, California, is 72%.

How much does it rain in Cobb in December?

In December, in Cobb, California, the rain falls for 11.2 days. Throughout December, 3.11" (79mm) of precipitation is accumulated.

How much does it snow in Cobb in December?

In December, in Cobb, it is snowing for 0.2 days. Throughout December, 0.08" (2mm) of snow is accumulated.

What is the month with the shortest days in Cobb?

The month with the shortest days in Cobb, California, is December, with an average of 9h and 30min of daylight.

How many hours of daylight does Cobb have in December?

In December, the average day length in Cobb, California, is 9h and 30min.

When are sunrise and sunset in December in Cobb?

On the first day of December in Cobb, sunrise is at 7:11 am and sunset at 4:49 pm. On the last day of the month, sunrise is at 7:29 am and sunset at 4:59 pm PST.

What is the month with the least sunshine in Cobb?

December has the least sunshine of the year in Cobb, with an average of 5.3h of sunshine.

How long on average sun shines in December in Cobb?

In December, the average sunshine duration in Cobb is 5.3h.

What is the month with the lowest UV index in Cobb?

November and December, with an average maximum UV index of 2, are months with the lowest UV index in Cobb.

How high is the UV index in December in Cobb?

In December, the average daily maximum UV index in Cobb is 2. A UV Index of 2, and less, symbolizes a low health threat from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in December
Cobb, CA

Average temperature in December - Cobb, CA
  • Average high temperature in December: 52.7°F

The warmest month (with the highest average high temperature) is July (91.2°F).
The month with the lowest average high temperature is December (52.7°F).

  • Average low temperature in December: 38.1°F

The month with the highest average low temperature is July (58.8°F).
The coldest month (with the lowest average low temperature) is December (38.1°F).

[Resources]

Average pressure in December
Cobb, CA

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

The month with the highest atmospheric pressure is January (30.14"Hg).
The months with the lowest atmospheric pressure are June and August (29.91"Hg).

[Resources]

Average wind speed in December
Cobb, CA

Average wind speed in December - Cobb, CA
  • Average wind speed in December: 4.7mph

The windiest month (with the highest average wind speed) is April (5.7mph).
The calmest month (with the lowest average wind speed) is November (4.3mph).

[Resources]

Average humidity in December
Cobb, CA

Average humidity in December - Cobb, CA
  • Average humidity in December: 72%

The month with the highest relative humidity is March (74%).
The month with the lowest relative humidity is July (44%).

[Resources]

Average rainfall in December
Cobb, CA

Average rainfall in December - Cobb, CA
  • Average rainfall in December: 3.11"

The wettest month (with the highest rainfall) is February (3.7").
The driest months (with the least rainfall) are July and August (0.04").

[Resources]

Average rainfall days in December
Cobb, CA

Average rainfall days in December - Cobb, CA
  • Average rainfall days in December: 11.2 days

The month with the highest number of rainy days is March (13.9 days).
The months with the least rainy days are July and August (1.1 days).

[Resources]

Average snowfall in December
Cobb, CA

Average snowfall in December - Cobb, CA
  • Average snowfall in December: 0.08"

The month with the highest snowfall is February (0.51").
The months with the least snowfall are April, May, June, July, August, September and October (0").

[Resources]

Average snowfall days in December
Cobb, CA

Average snowfall days in December - Cobb, CA
  • Average snowfall days in December: 0.2 days

The month with the highest number of snowfall days is February (0.9 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).

[Resources]

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

Average daylight in December / Average sunshine in December - Cobb, CA
  • Average daylight in December: 9h and 3min

The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).

  • Average sunshine in December: 5h and 2min

The month with the most sunshine is July (Average sunshine: 12h and 0min).
The month with the least sunshine is December (Average sunshine: 5h and 18min).

[Resources]

Average sunshine days in December
Cobb, CA

Average sunshine days in December - Cobb, CA
  • Average sunshine days in December: 19 days

The month with the most sunshine days is July (29.4 days).
The month with the least sunshine days is March (15.8 days).

[Resources]

Average UV index in December
Cobb, CA

Average UV index in December - Cobb, CA
  • Average UV index in December: 2

The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are November and December (UV index 2).

[Resources]

Average cloud cover in December
Cobb, CA

Average cloud cover in December - Cobb, CA
  • Average cloud cover in December: 41

The month with the most cloud cover is March (Cloud cover 43).
The month with the least cloud cover is July (Cloud cover 4).

[Resources]

Average visibility in December
Cobb, CA

Average visibility in December - Cobb, 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).

[Resources]

Cobb, California, USA

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location