December weather forecastPlacerville, ID
December
Weather in December
The first month of the winter, December, is still a freezing cold month in Placerville, Idaho, with an average temperature fluctuating between 31.3°F (-0.4°C) and 19.4°F (-7°C).Temperature
Placerville, Idaho, records the coldest temperatures in December, averaging a high of 31.3°F (-0.4°C) and a low of 19.4°F (-7°C).Humidity
In December, the average relative humidity is 82%.Rainfall
In Placerville, during December, the rain falls for 5.9 days and regularly aggregates up to 2.44" (62mm) of precipitation. Throughout the year, there are 103.4 rainfall days, and 19.84" (504mm) of precipitation is accumulated.Snowfall
January through June, October through December are months with snowfall. In December, it is snowing for 14.4 days. Throughout December, 17.32" (440mm) of snow is accumulated. In Placerville, during the entire year, snow falls for 79.1 days and aggregates up to 88.94" (2259mm) of snow.Daylight
December has the shortest days of the year, with an average of 9h and 0min of daylight.On the first day of December, sunrise is at 7:59 am and sunset at 5:07 pm. On the last day of the month, sunrise is at 8:18 am and sunset at 5:16 pm MST.
Sunshine
The month with the least sunshine is December, with an average of 5.2h of sunshine.UV index
In December, the average daily maximum UV index is 2. A UV Index value of 2, and less, symbolizes a low health risk from exposure to the Sun's UV radiation for the average person.Note: The maximum daily UV index of 2 in December converts into the following recommendations:
While most people can stay under the sun for an hour without burning, children must always be guarded against sun exposure. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Take to heart! Snow reflection can almost magnify 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
Placerville, ID
- Average high temperature in December: 31.3°F
The warmest month (with the highest average high temperature) is July (86.5°F).
The month with the lowest average high temperature is December (31.3°F).
- Average low temperature in December: 19.4°F
The month with the highest average low temperature is August (56.8°F).
The coldest month (with the lowest average low temperature) is December (19.4°F).
Average pressure in December
Placerville, ID
- Average pressure in December: 30.22"Hg
The month with the highest atmospheric pressure is January (30.25"Hg).
The months with the lowest atmospheric pressure are June and August (29.91"Hg).
Average wind speed in December
Placerville, ID
- Average wind speed in December: 4.7mph
The windiest month (with the highest average wind speed) is April (6.1mph).
The calmest month (with the lowest average wind speed) is January (4.3mph).
Average humidity in December
Placerville, ID
- Average humidity in December: 82%
The month with the highest relative humidity is January (85%).
The months with the lowest relative humidity are July and August (33%).
Average rainfall in December
Placerville, ID
- Average rainfall in December: 2.44"
The wettest month (with the highest rainfall) is March (2.83").
The driest month (with the least rainfall) is July (0.31").
Average rainfall days in December
Placerville, ID
- Average rainfall days in December: 5.9 days
The month with the highest number of rainy days is May (14.2 days).
The month with the least rainy days is January (4.7 days).
Average snowfall in December
Placerville, ID
- Average snowfall in December: 17.32"
The month with the highest snowfall is January (20.59").
The months with the least snowfall are July, August and September (0").
Average snowfall days in December
Placerville, ID
- Average snowfall days in December: 14.4 days
The month with the highest number of snowfall days is January (14.8 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in December /
Average sunshine in December
Placerville, ID
- Average daylight in December: 9h and 0min
The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).
- Average sunshine in December: 5h 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: 5h and 12min).
Average sunshine days in December
Placerville, ID
- Average sunshine days in December: 15.8 days
The month with the most sunshine days is July (22.3 days).
The month with the least sunshine days is March (11.2 days).
Average UV index in December
Placerville, ID
- 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 February (UV index 1).
Average cloud cover in December
Placerville, ID
- Average cloud cover in December: 45
The month with the most cloud cover is December (Cloud cover 45).
The months with the least cloud cover are July and August (Cloud cover 9).
Average visibility in December
Placerville, ID
- Average visibility in December: 5mi
The months with the highest visibility are March, April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, February and December (5mi).
