December weather forecastDuncan Corners, CA
December
Weather in December
The first month of the winter, December, is also a fresh month in Duncan Corners, California, with an average temperature varying between 54.1°F (12.3°C) and 38.5°F (3.6°C).Temperature
In Duncan Corners, December is the coldest month, with temperatures averaging a high of 54.1°F (12.3°C) and a low of 38.5°F (3.6°C).Humidity
With an average relative humidity of 52%, December is the most humid month.Rainfall
The month with the most rainfall is December, when the rain falls for 6.2 days and typically aggregates up to 1.18" (30mm) of precipitation.Snowfall
Months with snowfall in Duncan Corners are January through April, November and December. In Duncan Corners, during December, snow falls for 0.5 days and regularly aggregates up to 1.38" (35mm) of snow. In Duncan Corners, during the entire year, snow falls for 3.1 days and aggregates up to 5.28" (134mm) of snow.Daylight
With an average of 9h and 54min of daylight, December has the shortest days of the year.On the first day of December, sunrise is at 6:38 am and sunset at 4:39 pm. On the last day of the month, sunrise is at 6:56 am and sunset at 4:49 pm PST.
Sunshine
December has the least sunshine of the year in Duncan Corners, with an average of 7h of sunshine.UV index
The months with the lowest UV index 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 exposure to the Sun's UV rays for average individuals.Note: The maximum UV index, 3 during December, leads to the following recommendations:
Be vigilant - A duty to shield skin and eyes from injury exists. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes. Note this! The Sun's UV radiation can nearly be doubled by the reflection off snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Duncan Corners, CA
- Average high temperature in December: 54.1°F
The warmest month (with the highest average high temperature) is July (91.4°F).
The month with the lowest average high temperature is December (54.1°F).
- Average low temperature in December: 38.5°F
The month with the highest average low temperature is August (67.5°F).
The coldest month (with the lowest average low temperature) is December (38.5°F).
Average pressure in December
Duncan Corners, CA
- Average pressure in December: 30.08"Hg
The month with the highest atmospheric pressure is January (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.83"Hg).
Average wind speed in December
Duncan Corners, CA
- Average wind speed in December: 6.3mph
The windiest months (with the highest average wind speed) are April and May (9.1mph).
The calmest month (with the lowest average wind speed) is January (6.2mph).
Average humidity in December
Duncan Corners, CA
- Average humidity in December: 52%
The month with the highest relative humidity is December (52%).
The month with the lowest relative humidity is August (30%).
Average rainfall in December
Duncan Corners, CA
- Average rainfall in December: 1.18"
The wettest month (with the highest rainfall) is December (1.18").
The driest month (with the least rainfall) is June (0.04").
Average rainfall days in December
Duncan Corners, CA
- Average rainfall days in December: 6.2 days
The month with the highest number of rainy days is March (6.7 days).
The month with the least rainy days is June (0.8 days).
Average snowfall in December
Duncan Corners, CA
- Average snowfall in December: 1.38"
The month with the highest snowfall is November (1.85").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in December
Duncan Corners, CA
- Average snowfall days in December: 0.5 days
The month with the highest number of snowfall days is February (1.4 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in December /
Average sunshine in December
Duncan Corners, 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 months with the most sunshine are June and July (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 7h and 0min).
Average sunshine days in December
Duncan Corners, CA
- Average sunshine days in December: 23.3 days
The month with the most sunshine days is June (28.8 days).
The month with the least sunshine days is February (21.6 days).
Average UV index in December
Duncan Corners, CA
- Average UV index in December: 3
The months with the highest UV index are June, July and August (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 3).
Average cloud cover in December
Duncan Corners, CA
- Average cloud cover in December: 21
The month with the most cloud cover is December (Cloud cover 21).
The months with the least cloud cover are June, August and September (Cloud cover 6).
Average visibility in December
Duncan Corners, 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).
