December weather forecastGreenville, CA
December
Weather in December
December, the first month of the winter in Greenville, is also an icy month, with an average temperature varying between 39.2°F (4°C) and 23.4°F (-4.8°C).Temperature
December stands out as Greenville's coldest month, with temperatures ranging between an average high of 39.2°F (4°C) and a low of 23.4°F (-4.8°C).Humidity
In December, the average relative humidity in Greenville is 78%.Rainfall
The months with the most rainfall in Greenville are February and December, with an average 4.06" (103mm) of precipitation.Snowfall
Months with snowfall in Greenville are January through May, October through December. In Greenville, in December, snow falls for 7.8 days, with typically accumulated 11.3" (287mm) of snow. Throughout the year, in Greenville, there are 37.7 snowfall days, and 56.02" (1423mm) of snow is accumulated.Daylight
The month with the shortest days in Greenville, California, is December, with an average of 9h and 24min of daylight.On the first day of December, sunrise is at 7:07 am and sunset at 4:38 pm. On the last day of the month, sunrise is at 7:25 am and sunset at 4:48 pm PST.
Sunshine
The average sunshine in December is 5.5h.UV index
January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Greenville, California. A UV Index estimate of 2, and below, represents a minimal health hazard from exposure to the Sun's UV radiation for the ordinary person.Note: The daily high UV index of 2 in December translates into this advice:
Prolonged sun exposure generally does not trouble most people. However, it is vital to ensure protection for babies, children, and individuals with sensitive skin. Considering the Sun's intensity during midday, it's wise to minimize direct exposure. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes. Remember to consider! The UV radiation from the Sun can be intensified nearly twice by the reflection of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Greenville, CA
- Average high temperature in December: 39.2°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 (39.2°F).
- Average low temperature in December: 23.4°F
The month with the highest average low temperature is July (49.1°F).
The coldest month (with the lowest average low temperature) is December (23.4°F).
Average pressure in December
Greenville, 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
Greenville, CA
- Average wind speed in December: 5.7mph
The windiest month (with the highest average wind speed) is March (6.4mph).
The calmest month (with the lowest average wind speed) is August (4.7mph).
Average humidity in December
Greenville, CA
- Average humidity in December: 78%
The months with the highest relative humidity are January and March (81%).
The month with the lowest relative humidity is July (41%).
Average rainfall in December
Greenville, CA
- Average rainfall in December: 4.06"
The wettest months (with the highest rainfall) are February and December (4.06").
The driest month (with the least rainfall) is July (0.12").
Average rainfall days in December
Greenville, CA
- Average rainfall days in December: 11.2 days
The month with the highest number of rainy days is March (13.3 days).
The month with the least rainy days is August (1.8 days).
Average snowfall in December
Greenville, CA
- Average snowfall in December: 11.3"
The month with the highest snowfall is February (13.07").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Greenville, CA
- Average snowfall days in December: 7.8 days
The month with the highest number of snowfall days is March (8.5 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Greenville, 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 30min
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 24min).
Average sunshine days in December
Greenville, CA
- Average sunshine days in December: 16.4 days
The month with the most sunshine days is August (27.8 days).
The month with the least sunshine days is March (12.3 days).
Average UV index in December
Greenville, CA
- Average UV index in December: 2
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover in December
Greenville, CA
- Average cloud cover in December: 40
The month with the most cloud cover is March (Cloud cover 45).
The months with the least cloud cover are July and August (Cloud cover 6).
Average visibility in December
Greenville, CA
- Average visibility in December: 5mi
The months with the highest visibility are April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, February, March and December (5mi).
