December weather forecastCobb, CA
December
Weather in December
December, the first month of the winter in Cobb, is also a fresh month, with an average temperature ranging between min 38.1°F (3.4°C) and max 52.7°F (11.5°C).Temperature
December is the month when Cobb, California, 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, during 11.2 rainfall days, 3.11" (79mm) of precipitation is typically accumulated. 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, during December, snow falls for 0.2 days and regularly aggregates up to 0.08" (2mm) of snow. Throughout the year, there are 1.8 snowfall days, and 0.98" (25mm) of snow is accumulated.Daylight
The month with the shortest days is December, with an average of 9h and 30min of daylight.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, 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
November and December, with an average maximum UV index of 2, are months with the lowest UV index in Cobb. A UV Index of 2, and less, symbolizes a low health risk from exposure to the Sun's UV radiation for average individuals.Note: A maximum daily UV index of 2 during December morphs into the following directions:
Most people face no serious problems with extended sun exposure, but those with fair skin, infants, and children always need protection. Avoiding the Sun during its peak radiation time around midday is a healthy practice. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration. Mark this! Snow reflection can nearly double the UV radiation intensity from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
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).
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).
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).
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%).
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").
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).
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").
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).
Average daylight in December /
Average sunshine in December
Cobb, CA
- Average daylight in December: 9h and 30min
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 18min
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).
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).
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).
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).
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).
