December weather forecastCopperopolis, CA
December
Weather in December
December, the first month of the winter in Copperopolis, is also a fresh month, with an average temperature varying between 38.3°F (3.5°C) and 54.5°F (12.5°C).Temperature
Copperopolis's coldest month, December, registers temperatures that range from a high of 54.5°F (12.5°C) to a low of 38.3°F (3.5°C).Humidity
The average relative humidity in December in Copperopolis is 67%.Rainfall
In Copperopolis, in December, during 9.4 rainfall days, 3.78" (96mm) of precipitation is typically accumulated. In Copperopolis, during the entire year, the rain falls for 72.8 days and collects up to 20.91" (531mm) of precipitation.Snowfall
Months with snowfall in Copperopolis are February and December. The month with the most snowfall in Copperopolis is December, when snow falls for 0.2 days and typically aggregates up to 0.28" (7mm) of snow.Daylight
With an average of 9h and 36min of daylight, December has the shortest days of the year in Copperopolis.On the first day of the month, sunrise is at 7:00 am and sunset at 4:43 pm. On the last day of December, in Copperopolis, sunrise is at 7:18 am and sunset at 4:53 pm PST.
Sunshine
With an average of 5.9h of sunshine, December has the least sunshine of the year in Copperopolis.UV index
The months with the lowest UV index in Copperopolis are January, February, November and December, with an average maximum UV index of 3. A UV Index reading of 3 to 5 represents a medium vulnerability from unprotected exposure to Sun's UV rays for average individuals.Note: The maximum daily UV index of 3 during December translates into the following directions:
Make use of precautions - It is urged to ward off sun damage. For skin protection, it's recommended to minimize Sun exposure during its peak hours around midday. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat. Be on the lookout! Nearly twofold UV radiation from the Sun can be reflected by snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Copperopolis, CA
- Average high temperature in December: 54.5°F
The warmest month (with the highest average high temperature) is July (93.6°F).
The month with the lowest average high temperature is December (54.5°F).
- Average low temperature in December: 38.3°F
The month with the highest average low temperature is July (63.1°F).
The coldest month (with the lowest average low temperature) is December (38.3°F).
Average pressure in December
Copperopolis, CA
- Average pressure in December: 30.13"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in December
Copperopolis, CA
- Average wind speed in December: 4.7mph
The windiest month (with the highest average wind speed) is June (5.8mph).
The calmest month (with the lowest average wind speed) is November (4.5mph).
Average humidity in December
Copperopolis, CA
- Average humidity in December: 67%
The month with the highest relative humidity is March (70%).
The month with the lowest relative humidity is July (32%).
Average rainfall in December
Copperopolis, CA
- Average rainfall in December: 3.78"
The wettest month (with the highest rainfall) is March (4.17").
The driest months (with the least rainfall) are July and August (0.04").
Average rainfall days in December
Copperopolis, CA
- Average rainfall days in December: 9.4 days
The month with the highest number of rainy days is March (12.7 days).
The month with the least rainy days is August (1 days).
Average snowfall in December
Copperopolis, CA
- Average snowfall in December: 0.28"
The month with the highest snowfall is December (0.28").
The months with the least snowfall are January, March, April, May, June, July, August, September, October and November (0").
Average snowfall days in December
Copperopolis, CA
- Average snowfall days in December: 0.2 days
The month with the highest number of snowfall days is December (0.2 days).
The months with the least snowfall days are January, March, April, May, June, July, August, September, October and November (0 days).
Average daylight in December /
Average sunshine in December
Copperopolis, CA
- Average daylight in December: 9h and 36min
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 36min).
- Average sunshine in December: 5h and 54min
The month with the most sunshine is July (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 5h and 54min).
Average sunshine days in December
Copperopolis, CA
- Average sunshine days in December: 20.5 days
The month with the most sunshine days is August (29.1 days).
The month with the least sunshine days is March (17.8 days).
Average UV index in December
Copperopolis, CA
- Average UV index in December: 3
The months with the highest UV index are June and July (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 3).
Average cloud cover in December
Copperopolis, CA
- Average cloud cover in December: 33
The month with the most cloud cover is March (Cloud cover 36).
The month with the least cloud cover is July (Cloud cover 4).
Average visibility in December
Copperopolis, 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).
