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
With its high average temperature of 49.3°F (9.6°C) and a low of 32.4°F (0.2°C), December is regarded as the coldest month.Humidity
In December, the average relative humidity is 59%.Rainfall
In Squirrel Mountain Valley, in December, during 7.2 rainfall days, 1.89" (48mm) of precipitation is typically accumulated. Throughout the year, there are 65.1 rainfall days, and 12.28" (312mm) of precipitation is accumulated.Snowfall
January through May, November and December are months with snowfall. In Squirrel Mountain Valley, California, in December, snow falls for 1.8 days, with typically accumulated 0.83" (21mm) of snow. In Squirrel Mountain Valley, during the entire year, snow falls for 9.3 days and aggregates up to 9.65" (245mm) of snow.Daylight
The month with the shortest days is December, with an average of 9h and 48min of daylight.On the first day of December, sunrise is at 6:45 am and sunset at 4:40 pm. On the last day of the month, sunrise is at 7:03 am and sunset at 4:50 pm PST.
Sunshine
In Squirrel Mountain Valley, the average sunshine in December is 6.5h.UV index
The months with the lowest UV index are November and December, with an average maximum UV index of 2. A UV Index value of 2, and less, symbolizes a low health risk from exposure to the Sun's UV rays for the average person.Note: The average daily UV index of 2 in December transforms into the following instructions:
Unlike children, who always need sun protection, most individuals can remain in the sun for up to an hour without getting burnt. UV radiation from the Sun is most dangerous during midday; take precautions and seek shade. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. 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 are the coldest months?
What is the temperature in December in Squirrel Mountain Valley?
What is the average humidity in December in Squirrel Mountain Valley?
How much does it rain in December?
How much does it snow in December?
What is the month with the shortest days?
What is the average length of the day in December?
When are sunrise and sunset in December?
How long on average sun shines in December?
What is the month with the lowest UV index?
What is the UV index reading in December in Squirrel Mountain Valley?
Average temperature in December
Squirrel Mountain Valley, CA
- Average high temperature in December: 49.3°F
The warmest month (with the highest average high temperature) is July (86.4°F).
The month with the lowest average high temperature is December (49.3°F).
- Average low temperature in December: 32.4°F
The month with the highest average low temperature is July (60.4°F).
The coldest month (with the lowest average low temperature) is December (32.4°F).
Average pressure in December
Squirrel Mountain Valley, CA
- Average pressure in December: 30.1"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.85"Hg).
Average wind speed in December
Squirrel Mountain Valley, CA
- Average wind speed in December: 5.7mph
The windiest month (with the highest average wind speed) is May (7.4mph).
The calmest month (with the lowest average wind speed) is September (5.4mph).
Average humidity in December
Squirrel Mountain Valley, CA
- Average humidity in December: 59%
The month with the highest relative humidity is February (61%).
The month with the lowest relative humidity is August (31%).
Average rainfall in December
Squirrel Mountain Valley, CA
- Average rainfall in December: 1.89"
The wettest month (with the highest rainfall) is January (2.24").
The driest month (with the least rainfall) is June (0.2").
Average rainfall days in December
Squirrel Mountain Valley, CA
- Average rainfall days in December: 7.2 days
The month with the highest number of rainy days is March (10.1 days).
The month with the least rainy days is June (1.5 days).
Average snowfall in December
Squirrel Mountain Valley, CA
- Average snowfall in December: 0.83"
The month with the highest snowfall is February (3.98").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days in December
Squirrel Mountain Valley, CA
- Average snowfall days in December: 1.8 days
The month with the highest number of snowfall days is February (2.7 days).
The months with the least snowfall days are June, July, August, September and October (0 days).
Average daylight in December /
Average sunshine in December
Squirrel Mountain Valley, CA
- Average daylight in December: 9h and 5min
The month with the longest days is June (Average daylight: 14h and 30min).
The month with the shortest days is December (Average daylight: 9h and 48min).
- Average sunshine in December: 6h and 3min
The months with the most sunshine are June and July (Average sunshine: 12h and 0min).
The months with the least sunshine are January and February (Average sunshine: 6h and 24min).
Average sunshine days in December
Squirrel Mountain Valley, CA
- Average sunshine days in December: 22.6 days
The month with the most sunshine days is June (27.4 days).
The month with the least sunshine days is February (19.2 days).
Average UV index in December
Squirrel Mountain Valley, CA
- Average UV index in December: 2
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are November and December (UV index 2).
Average cloud cover in December
Squirrel Mountain Valley, CA
- Average cloud cover in December: 27
The month with the most cloud cover is March (Cloud cover 31).
The months with the least cloud cover are August and September (Cloud cover 6).
Average visibility in December
Squirrel Mountain Valley, 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).
Squirrel Mountain Valley, California, USA
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