December weather forecastGreenwood, CA
December
Weather in December
The first month of the winter, December, is also a fresh month in Greenwood, California, with an average temperature fluctuating between 53.4°F (11.9°C) and 39.2°F (4°C).Temperature
In Greenwood, the month of December registers the lowest temperatures, averaging 53.4°F (11.9°C) at the peak and 39.2°F (4°C) at the lowest.Humidity
In Greenwood, the average relative humidity in December is 68%.Rainfall
In Greenwood, in December, during 11.5 rainfall days, 4.69" (119mm) of precipitation is typically accumulated. Throughout the year, there are 84.8 rainfall days, and 28.86" (733mm) of precipitation is accumulated.Snowfall
February, March and December are months with snowfall in Greenwood. December is the first month it typically snows in Greenwood, California. Throughout December, in the average 0.3 snowfall days, it receives 0.63" (16mm) of snow. Throughout the year, in Greenwood, California, there are 1.2 snowfall days, and 2.09" (53mm) of snow is accumulated.Daylight
The month with the shortest days is December, with an average of 9h and 30min of daylight.On the first day of the month, sunrise is at 7:03 am and sunset at 4:42 pm. On the last day of December, sunrise is at 7:22 am and sunset at 4:51 pm PST.
Sunshine
The months with the least sunshine in Greenwood are January and December, with an average of 5.8h 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 estimate of 3 to 5 represents a moderate health risk from exposure to the Sun's UV rays for ordinary individuals.Note: A maximum UV index of 3 in December translates into the following recommendations:
Be vigilant - A duty to shield skin and eyes from injury exists. The solar radiation around mid-day is intense; avoid the Sun and stay safe. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit. Be mindful! The reflection from snow can increase the Sun's UV radiation nearly twice.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Greenwood, CA
- Average high temperature in December: 53.4°F
The warmest month (with the highest average high temperature) is July (91.9°F).
The month with the lowest average high temperature is December (53.4°F).
- Average low temperature in December: 39.2°F
The month with the highest average low temperature is July (60.6°F).
The coldest month (with the lowest average low temperature) is December (39.2°F).
Average pressure in December
Greenwood, CA
- Average pressure in December: 30.13"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
Greenwood, CA
- Average wind speed in December: 4.9mph
The windiest months (with the highest average wind speed) are February and March (5.7mph).
The calmest month (with the lowest average wind speed) is August (4.3mph).
Average humidity in December
Greenwood, CA
- Average humidity in December: 68%
The month with the highest relative humidity is March (75%).
The month with the lowest relative humidity is July (38%).
Average rainfall in December
Greenwood, CA
- Average rainfall in December: 4.69"
The wettest month (with the highest rainfall) is March (5.63").
The driest months (with the least rainfall) are July and August (0.04").
Average rainfall days in December
Greenwood, CA
- Average rainfall days in December: 11.5 days
The month with the highest number of rainy days is March (15.4 days).
The month with the least rainy days is July (1 days).
Average snowfall in December
Greenwood, CA
- Average snowfall in December: 0.63"
The month with the highest snowfall is February (1.18").
The months with the least snowfall are January, April, May, June, July, August, September, October and November (0").
Average snowfall days in December
Greenwood, CA
- Average snowfall days in December: 0.3 days
The month with the highest number of snowfall days is February (0.6 days).
The months with the least snowfall days are January, April, May, June, July, August, September, October and November (0 days).
Average daylight in December /
Average sunshine in December
Greenwood, CA
- Average daylight in December: 9h and 30min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in December: 5h and 48min
The month with the most sunshine is July (Average sunshine: 12h and 6min).
The months with the least sunshine are January and December (Average sunshine: 5h and 48min).
Average sunshine days in December
Greenwood, CA
- Average sunshine days in December: 18.7 days
The month with the most sunshine days is July (29.6 days).
The month with the least sunshine days is March (14.6 days).
Average UV index in December
Greenwood, CA
- Average UV index in December: 3
The months with the highest UV index are June and July (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 3).
Average cloud cover in December
Greenwood, CA
- Average cloud cover in December: 34
The month with the most cloud cover is March (Cloud cover 41).
The month with the least cloud cover is July (Cloud cover 4).
Average visibility in December
Greenwood, 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).
