December weather forecastCromberg, CA
December
Weather in December
The first month of the winter, December, is also an icy month in Cromberg, California, with an average temperature varying between 21.4°F (-5.9°C) and 36.7°F (2.6°C).Temperature
December stands out as Cromberg's coldest month, with temperatures ranging between an average high of 36.7°F (2.6°C) and a low of 21.4°F (-5.9°C).Humidity
The average relative humidity in December is 79%.Rainfall
In December, the rain falls for 5.4 days. Throughout December, 3.23" (82mm) of precipitation is accumulated. Throughout the year, there are 64.7 rainfall days, and 20.51" (521mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through June, September through December. In Cromberg, during December, snow falls for 14.6 days and regularly aggregates up to 24.02" (610mm) of snow. Throughout the year, there are 82.6 snowfall days, and 115.39" (2931mm) of snow is accumulated.Daylight
With an average of 9h and 24min of daylight, December has the shortest days of the year.On the first day of December, sunrise is at 7:05 am and sunset at 4:38 pm. On the last day of the month, sunrise is at 7:24 am and sunset at 4:48 pm PST.
Sunshine
In December, the average sunshine is 5.3h.UV index
The average daily maximum UV index in December is 2. A UV Index estimate of 2, and below, represents a low threat to health from exposure to the Sun's UV rays for average individuals.Note: An average maximum UV index of 2 in December leads to these recommendations:
For the majority, extended sun exposure is not of great concern. Infants and people with sensitive skin must always be protected. Avoiding direct sunlight during midday hours helps reduce the risk from intense UV radiation. Tightly woven clothing, when worn loosely, shields effectively against the Sun. Observe! Snow reflection can nearly intensify the Sun's UV radiation twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Cromberg, CA
- Average high temperature in December: 36.7°F
The warmest month (with the highest average high temperature) is July (83.1°F).
The month with the lowest average high temperature is December (36.7°F).
- Average low temperature in December: 21.4°F
The month with the highest average low temperature is July (48.7°F).
The coldest month (with the lowest average low temperature) is December (21.4°F).
Average pressure in December
Cromberg, CA
- Average pressure in December: 30.16"Hg
The month with the highest atmospheric pressure is January (30.19"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).
Average wind speed in December
Cromberg, CA
- Average wind speed in December: 5.6mph
The windiest month (with the highest average wind speed) is March (6.6mph).
The calmest month (with the lowest average wind speed) is August (5.2mph).
Average humidity in December
Cromberg, CA
- Average humidity in December: 79%
The month with the highest relative humidity is January (81%).
The months with the lowest relative humidity are July and August (39%).
Average rainfall in December
Cromberg, CA
- Average rainfall in December: 3.23"
The wettest month (with the highest rainfall) is March (3.62").
The driest months (with the least rainfall) are July and August (0.16").
Average rainfall days in December
Cromberg, CA
- Average rainfall days in December: 5.4 days
The month with the highest number of rainy days is May (9.9 days).
The month with the least rainy days is July (2.5 days).
Average snowfall in December
Cromberg, CA
- Average snowfall in December: 24.02"
The month with the highest snowfall is March (24.61").
The months with the least snowfall are July and August (0").
Average snowfall days in December
Cromberg, CA
- Average snowfall days in December: 14.6 days
The month with the highest number of snowfall days is March (15.7 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in December /
Average sunshine in December
Cromberg, CA
- Average daylight in December: 9h and 24min
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 24min).
- Average sunshine in December: 5h and 18min
The month with the most sunshine is July (Average sunshine: 12h and 6min).
The month with the least sunshine is January (Average sunshine: 5h and 6min).
Average sunshine days in December
Cromberg, CA
- Average sunshine days in December: 15.5 days
The month with the most sunshine days is August (26.9 days).
The month with the least sunshine days is March (12.3 days).
Average UV index in December
Cromberg, CA
- Average UV index in December: 2
The month with the highest UV index is July (UV index 6).
The month with the lowest UV index is November (UV index 1).
Average cloud cover in December
Cromberg, CA
- Average cloud cover in December: 44
The month with the most cloud cover is March (Cloud cover 46).
The month with the least cloud cover is July (Cloud cover 7).
Average visibility in December
Cromberg, CA
- Average visibility in December: 5mi
The months with the highest visibility are May, June, July, August, September, October and November (6mi).
The month with the lowest visibility is January (4mi).
