December weather forecastSomerset, CA
December
Weather in December
The first month of the winter, December, is still a cool month in Somerset, California, with temperature in the range of an average low of 36°F (2.2°C) and an average high of 50.7°F (10.4°C).Temperature
Somerset's coldest temperatures are experienced in December, with average high temperatures of 50.7°F (10.4°C) and lows of 36°F (2.2°C).Humidity
In December, the average relative humidity is 68%.Rainfall
In Somerset, in December, during 11 rainfall days, 4.76" (121mm) of precipitation is typically accumulated. In Somerset, during the entire year, the rain falls for 86.4 days and collects up to 29.69" (754mm) of precipitation.Snowfall
January through April, November and December are months with snowfall. In Somerset, during December, snow falls for 0.7 days and regularly aggregates up to 0.91" (23mm) of snow. Throughout the year, in Somerset, there are 6.9 snowfall days, and 14.09" (358mm) of snow is accumulated.Daylight
December has the shortest days of the year, with an average of 9h and 30min of daylight.On the first day of the month, sunrise is at 7:02 am and sunset at 4:41 pm. On the last day of December, sunrise is at 7:20 am and sunset at 4:51 pm PST.
Sunshine
The month with the least sunshine is December, with an average of 5.9h of sunshine.UV index
In December, the average daily maximum UV index is 3. A UV Index estimate of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for the ordinary person.Note: In December, an average UV index of 3 transforms into the following instructions:
Heed the precautions - It is counselled to guard against solar damage. Solar radiation peaks around mid-day, so it's wise to limit exposure to the Sun at this time. Stay sun-safe with clothing that is both closely woven and worn loosely. Be alert! Nearly double the UV rays 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
Somerset, CA
- Average high temperature in December: 50.7°F
The warmest month (with the highest average high temperature) is July (88.9°F).
The month with the lowest average high temperature is December (50.7°F).
- Average low temperature in December: 36°F
The month with the highest average low temperature is July (57.7°F).
The coldest month (with the lowest average low temperature) is December (36°F).
Average pressure in December
Somerset, CA
- Average pressure in December: 30.14"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).
Average wind speed in December
Somerset, CA
- Average wind speed in December: 5.1mph
The windiest month (with the highest average wind speed) is February (6mph).
The calmest month (with the lowest average wind speed) is August (4.2mph).
Average humidity in December
Somerset, CA
- Average humidity in December: 68%
The month with the highest relative humidity is March (76%).
The month with the lowest relative humidity is July (39%).
Average rainfall in December
Somerset, CA
- Average rainfall in December: 4.76"
The wettest month (with the highest rainfall) is March (5.98").
The driest month (with the least rainfall) is July (0").
Average rainfall days in December
Somerset, CA
- Average rainfall days in December: 11 days
The month with the highest number of rainy days is March (15.6 days).
The month with the least rainy days is July (0.9 days).
Average snowfall in December
Somerset, CA
- Average snowfall in December: 0.91"
The month with the highest snowfall is February (5.16").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in December
Somerset, CA
- Average snowfall days in December: 0.7 days
The month with the highest number of snowfall days is February (2.5 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
Somerset, 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 54min
The month with the most sunshine is July (Average sunshine: 12h and 12min).
The month with the least sunshine is December (Average sunshine: 5h and 54min).
Average sunshine days in December
Somerset, CA
- Average sunshine days in December: 18.8 days
The month with the most sunshine days is July (29.8 days).
The month with the least sunshine days is March (13.8 days).
Average UV index in December
Somerset, CA
- Average UV index in December: 3
The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is November (UV index 2).
Average cloud cover in December
Somerset, CA
- Average cloud cover in December: 33
The month with the most cloud cover is March (Cloud cover 39).
The month with the least cloud cover is July (Cloud cover 4).
Average visibility in December
Somerset, 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).
