December weather forecastDay Valley, CA
December
Weather in December
December, the first month of the winter in Day Valley, is still a refreshing month, with an average temperature fluctuating between 43.7°F (6.5°C) and 56.3°F (13.5°C).Temperature
Day Valley notes the coldest temperatures in December, with a high average of 56.3°F (13.5°C) and a low of 43.7°F (6.5°C).Humidity
The average relative humidity in December is 71%.Rainfall
In December, the rain falls for 9.3 days. Throughout December, 2.2" (56mm) of precipitation is accumulated. Throughout the year, there are 69.6 rainfall days, and 12.09" (307mm) of precipitation is accumulated.Daylight
With an average of 9h and 42min of daylight, December has the shortest days of the year.On the first day of December in Day Valley, sunrise is at 7:02 am and sunset at 4:50 pm. On the last day of the month, sunrise is at 7:20 am and sunset at 5:01 pm PST.
Sunshine
December has the least sunshine of the year, with an average of 6h of sunshine.UV index
January, February, November and December, with an average maximum UV index of 3, are months with the lowest UV index. A UV Index value of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV radiation for ordinary individuals.Note: The maximum daily UV index of 3 in December converts into the following recommendations:
Put precautions into practice - Guidance to elude sunburn is provided. Avoiding the Sun's peak radiation during midday hours is essential for health and safety. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Day Valley, CA
- Average high temperature in December: 56.3°F
The warmest month (with the highest average high temperature) is August (78.8°F).
The month with the lowest average high temperature is December (56.3°F).
- Average low temperature in December: 43.7°F
The month with the highest average low temperature is September (55°F).
The coldest month (with the lowest average low temperature) is February (43°F).
Average pressure in December
Day Valley, CA
- Average pressure in December: 30.11"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is September (29.92"Hg).
Average wind speed in December
Day Valley, CA
- Average wind speed in December: 5.1mph
The windiest months (with the highest average wind speed) are April and May (6mph).
The calmest months (with the lowest average wind speed) are August, September, October and November (4.7mph).
Average humidity in December
Day Valley, CA
- Average humidity in December: 71%
The month with the highest relative humidity is March (75%).
The months with the lowest relative humidity are September and October (64%).
Average rainfall in December
Day Valley, CA
- Average rainfall in December: 2.2"
The wettest month (with the highest rainfall) is February (2.32").
The driest months (with the least rainfall) are July and August (0.04").
Average rainfall days in December
Day Valley, CA
- Average rainfall days in December: 9.3 days
The month with the highest number of rainy days is March (13.3 days).
The month with the least rainy days is August (1.1 days).
Average daylight in December /
Average sunshine in December
Day Valley, CA
- Average daylight in December: 9h and 42min
The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 42min).
- Average sunshine in December: 6h and 0min
The month with the most sunshine is July (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 6h and 0min).
Average sunshine days in December
Day Valley, CA
- Average sunshine days in December: 20.4 days
The month with the most sunshine days is July (28.2 days).
The month with the least sunshine days is March (16.8 days).
Average UV index in December
Day Valley, CA
- Average UV index in December: 3
The month with the highest UV index is June (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 3).
Average cloud cover in December
Day Valley, CA
- Average cloud cover in December: 32
The month with the most cloud cover is March (Cloud cover 34).
The month with the least cloud cover is July (Cloud cover 8).
Average visibility in December
Day Valley, 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).
