Contents
- Weather in December
- Frequently asked questions
- Average temperature in December
- Average pressure in December
- Average wind speed in December
- Average humidity in December
- Average rainfall in December
- Average rainfall days in December
- Average snowfall in December
- Average snowfall days in December
- Average daylight in December
- Average sunshine in December
- Average sunshine days in December
- Average UV index in December
- Average cloud cover in December
- Average visibility in December
Weather in December
Temperature
The coldest month is December, with an average high-temperature of 37.8°F (3.2°C) and an average low-temperature of 23.4°F (-4.8°C).Humidity
In December, the average relative humidity is 72%.Rainfall
In Sun Valley, Nevada, during December, the rain falls for 8.4 days and regularly aggregates up to 1.3" (33mm) of precipitation. In Sun Valley, during the entire year, the rain falls for 68 days and collects up to 8.07" (205mm) of precipitation.Snowfall
January through May, September through December are months with snowfall. In Sun Valley, in December, during 7.8 snowfall days, 5.04" (128mm) of snow is typically accumulated. Throughout the year, there are 33.2 snowfall days, and 23.62" (600mm) 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 the month, sunrise is at 7:01 am and sunset at 4:35 pm. On the last day of December, sunrise is at 7:19 am and sunset at 4:45 pm PST.
Sunshine
The month with the least sunshine is December, with an average of 6.1h of sunshine.UV index
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV radiation for ordinary individuals.Note: The maximum daily UV index, 2 in December, converts into the following recommendations:
Unlike children, who always need sun protection, most individuals can remain in the sun for up to an hour without getting burnt. UV radiation is strongest from the Sun during midday; protect yourself by staying in shaded areas. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes. Attention! Nearly twice the Sun's UV radiation can be reflected by snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What month is the coldest?
How cold is December?
What is the average humidity in December?
How many days does it rain in December?
How many days does it snow in December?
What is the month with the shortest days?
How many hours of daylight does Sun Valley have in December?
What time are sunrise and sunset in December in Sun Valley?
What is the month with the least sunshine?
How many hours of sunshine does Sun Valley have in December?
What is the month with the lowest UV index?
What is the UV index reading in December?
Average temperature in December
Sun Valley, NV
- Average high temperature in December: 37.8°F
The warmest month (with the highest average high temperature) is July (85.5°F).
The month with the lowest average high temperature is December (37.8°F).
- Average low temperature in December: 23.4°F
The month with the highest average low temperature is July (57.2°F).
The coldest month (with the lowest average low temperature) is December (23.4°F).
Average pressure in December
Sun Valley, NV
- 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
Sun Valley, NV
- Average wind speed in December: 5.3mph
The windiest month (with the highest average wind speed) is April (7.3mph).
The calmest month (with the lowest average wind speed) is January (4.9mph).
Average humidity in December
Sun Valley, NV
- Average humidity in December: 72%
The month with the highest relative humidity is January (73%).
The months with the lowest relative humidity are July and August (28%).
Average rainfall in December
Sun Valley, NV
- Average rainfall in December: 1.3"
The wettest month (with the highest rainfall) is February (1.38").
The driest months (with the least rainfall) are July and August (0.08").
Average rainfall days in December
Sun Valley, NV
- Average rainfall days in December: 8.4 days
The month with the highest number of rainy days is March (11.2 days).
The month with the least rainy days is August (1.8 days).
Average snowfall in December
Sun Valley, NV
- Average snowfall in December: 5.04"
The month with the highest snowfall is February (6.06").
The months with the least snowfall are June, July and August (0").
Average snowfall days in December
Sun Valley, NV
- Average snowfall days in December: 7.8 days
The month with the highest number of snowfall days is December (7.8 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in December /
Average sunshine in December
Sun Valley, NV
- Average daylight in December: 9h and 2min
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 24min).
- Average sunshine in December: 6h and 1min
The month with the most sunshine is July (Average sunshine: 12h and 12min).
The month with the least sunshine is December (Average sunshine: 6h and 6min).
Average sunshine days in December
Sun Valley, NV
- Average sunshine days in December: 18.4 days
The month with the most sunshine days is August (28.2 days).
The month with the least sunshine days is March (15.9 days).
Average UV index in December
Sun Valley, NV
- Average UV index in December: 2
The months with the highest UV index are June and 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
Sun Valley, NV
- Average cloud cover in December: 33
The month with the most cloud cover is December (Cloud cover 33).
The months with the least cloud cover are July and August (Cloud cover 7).
Average visibility in December
Sun Valley, NV
- 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).
Sun Valley, Nevada, USA
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