December weather forecastColeville, CA
December
Weather in December
The first month of the winter, December, is also an icy month in Coleville, California, with temperature in the range of an average high of 37.8°F (3.2°C) and an average low of 22.1°F (-5.5°C).Temperature
December, having an average high-temperature of 37.8°F (3.2°C) and an average low-temperature of 22.1°F (-5.5°C), is the coldest month.Humidity
In December, the average relative humidity is 72%.Rainfall
In December, the rain falls for 7.5 days. Throughout December, 2.05" (52mm) of precipitation is accumulated. In Coleville, California, during the entire year, the rain falls for 80.6 days and collects up to 13.82" (351mm) of precipitation.Snowfall
January through May, October through December are months with snowfall. In December, it is snowing for 9.6 days. Throughout December, 7.64" (194mm) of snow is accumulated. In Coleville, during the entire year, snow falls for 42.4 days and aggregates up to 41.65" (1058mm) of snow.Daylight
The month with the shortest days in Coleville is December, with an average of 9h and 30min of daylight.On the first day of the month, sunrise is at 6:57 am and sunset at 4:37 pm. On the last day of December, sunrise is at 7:15 am and sunset at 4:47 pm PST.
Sunshine
December has the least sunshine of the year, with an average of 6.2h of sunshine.UV index
The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2. A UV Index value of 2, and less, symbolizes a minimal health hazard from unprotected exposure to Sun's UV rays for the ordinary person.Note: The UV index of 2 during December translates into the following guidance:
Babies, children, and those with sensitive skin should always avoid extended periods in the sun. Direct Sun exposure should be minimized especially during midday when radiation is most intense. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration. Take note! UV radiation from the Sun can double in intensity due to snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Coleville, CA
- Average high temperature in December: 37.8°F
The warmest month (with the highest average high temperature) is July (80.2°F).
The month with the lowest average high temperature is December (37.8°F).
- Average low temperature in December: 22.1°F
The month with the highest average low temperature is July (51.1°F).
The coldest month (with the lowest average low temperature) is December (22.1°F).
Average pressure in December
Coleville, CA
- Average pressure in December: 30.15"Hg
The month with the highest atmospheric pressure is January (30.18"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in December
Coleville, CA
- Average wind speed in December: 5.5mph
The windiest month (with the highest average wind speed) is March (6.9mph).
The calmest months (with the lowest average wind speed) are January, August and October (5.2mph).
Average humidity in December
Coleville, CA
- Average humidity in December: 72%
The month with the highest relative humidity is January (73%).
The month with the lowest relative humidity is August (34%).
Average rainfall in December
Coleville, CA
- Average rainfall in December: 2.05"
The wettest month (with the highest rainfall) is February (2.28").
The driest month (with the least rainfall) is September (0.24").
Average rainfall days in December
Coleville, CA
- Average rainfall days in December: 7.5 days
The month with the highest number of rainy days is March (10.8 days).
The months with the least rainy days are August and September (4.2 days).
Average snowfall in December
Coleville, CA
- Average snowfall in December: 7.64"
The month with the highest snowfall is March (9.33").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Coleville, CA
- Average snowfall days in December: 9.6 days
The month with the highest number of snowfall days is December (9.6 days).
The months with the least snowfall days are July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Coleville, CA
- Average daylight in December: 9h and 30min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in December: 6h and 12min
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 12min).
Average sunshine days in December
Coleville, CA
- Average sunshine days in December: 17.2 days
The month with the most sunshine days is October (25.5 days).
The month with the least sunshine days is March (14.9 days).
Average UV index in December
Coleville, 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, November and December (UV index 2).
Average cloud cover in December
Coleville, CA
- Average cloud cover in December: 31
The months with the most cloud cover are March and December (Cloud cover 31).
The months with the least cloud cover are July, August and September (Cloud cover 8).
Average visibility in December
Coleville, 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).
