December weather forecastWhitmore, CA
December
Weather in December
The first month of the winter, December, is also a frosty month in Whitmore, California, with an average temperature fluctuating between 27.9°F (-2.3°C) and 43.3°F (6.3°C).Temperature
The month of December sees the lowest average temperatures, reaching 43.3°F (6.3°C) at the peak and 27.9°F (-2.3°C) at the low.Humidity
In December, the average relative humidity is 76%.Rainfall
In December, the rain falls for 12.5 days. Throughout December, 4.21" (107mm) of precipitation is accumulated. Throughout the year, there are 105 rainfall days, and 24.69" (627mm) of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall. In December, it is snowing for 7.5 days. Throughout December, 8.11" (206mm) of snow is accumulated. In Whitmore, during the entire year, snow falls for 36.7 days and aggregates up to 43.62" (1108mm) of snow.Daylight
December has the shortest days of the year, with an average of 9h and 18min of daylight.On the first day of the month, sunrise is at 7:12 am and sunset at 4:41 pm. On the last day of December, sunrise is at 7:31 am and sunset at 4:50 pm PST.
Sunshine
With an average of 5.7h of sunshine, December has the least sunshine of the year.UV index
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from unprotected exposure to Sun's UV rays for the ordinary person.Note: The UV index of 2 during December leads to these advisories:
Children must always have sun protection, unlike most people, who can tolerate up to an hour in the sun without any burns. Exposing oneself to the midday Sun can be harmful due to the strong UV radiation; limit your time outside. Experience reduced UV exposure by about half when donning a wide-brim hat. Forewarned is forearmed! The Sun's UV radiation can be almost doubled in intensity by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Whitmore, CA
- Average high temperature in December: 43.3°F
The warmest month (with the highest average high temperature) is July (86.7°F).
The month with the lowest average high temperature is December (43.3°F).
- Average low temperature in December: 27.9°F
The month with the highest average low temperature is July (53.1°F).
The coldest month (with the lowest average low temperature) is December (27.9°F).
Average pressure in December
Whitmore, CA
- Average pressure in December: 30.16"Hg
The month with the highest atmospheric pressure is January (30.18"Hg).
The months with the lowest atmospheric pressure are June and August (29.92"Hg).
Average wind speed in December
Whitmore, CA
- Average wind speed in December: 5.1mph
The windiest month (with the highest average wind speed) is March (5.8mph).
The calmest month (with the lowest average wind speed) is August (4.5mph).
Average humidity in December
Whitmore, CA
- Average humidity in December: 76%
The months with the highest relative humidity are January and March (79%).
The months with the lowest relative humidity are July and August (40%).
Average rainfall in December
Whitmore, CA
- Average rainfall in December: 4.21"
The wettest month (with the highest rainfall) is March (4.45").
The driest month (with the least rainfall) is July (0.16").
Average rainfall days in December
Whitmore, CA
- Average rainfall days in December: 12.5 days
The month with the highest number of rainy days is April (14.5 days).
The month with the least rainy days is August (2.3 days).
Average snowfall in December
Whitmore, CA
- Average snowfall in December: 8.11"
The month with the highest snowfall is March (10.43").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Whitmore, CA
- Average snowfall days in December: 7.5 days
The month with the highest number of snowfall days is March (8 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in December /
Average sunshine in December
Whitmore, CA
- Average daylight in December: 9h and 18min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in December: 5h and 42min
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 42min).
Average sunshine days in December
Whitmore, CA
- Average sunshine days in December: 14.7 days
The month with the most sunshine days is August (26 days).
The month with the least sunshine days is March (11.3 days).
Average UV index in December
Whitmore, CA
- Average UV index in December: 2
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in December
Whitmore, CA
- Average cloud cover in December: 38
The month with the most cloud cover is March (Cloud cover 42).
The months with the least cloud cover are July and August (Cloud cover 6).
Average visibility in December
Whitmore, CA
- Average visibility in December: 5mi
The months with the highest visibility are February, April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, March and December (5mi).
