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
December is Altaville's coldest month, registering average high temperatures of 53.2°F (11.8°C) and lows of 37.8°F (3.2°C).Humidity
In December, the average relative humidity is 67%.Rainfall
In December, in Altaville, California, the rain falls for 9.5 days. Throughout December, 3.9" (99mm) of precipitation is accumulated. In Altaville, during the entire year, the rain falls for 74.4 days and collects up to 22.87" (581mm) of precipitation.Snowfall
January through March, November and December are months with snowfall. In Altaville, in December, snow falls for 0.2 days, with typically accumulated 0.39" (10mm) of snow. Throughout the year, in Altaville, there are 2.2 snowfall days, and 4.09" (104mm) of snow is accumulated.Daylight
With an average of 9h and 36min of daylight, December has the shortest days of the year in Altaville.On the first day of the month, sunrise is at 7:00 am and sunset at 4:42 pm. On the last day of December, in Altaville, sunrise is at 7:18 am and sunset at 4:52 pm PST.
Sunshine
With an average of 5.8h of sunshine, December has the least sunshine of the year in Altaville.UV index
In Altaville, the average daily maximum UV index in December is 3. A UV Index reading of 3 to 5 represents a medium health hazard from unprotected exposure to Sun's UV rays for average individuals.Note: The UV index of 3 during December translates into the following guidance:
Undertake precautions - Obligation exists to protect against skin and eye damage. The Sun's most harmful UV rays are emitted around midday; avoid staying outdoors for long during this time. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage. Be careful! The Sun's UV radiation can nearly be doubled by the reflective quality of snow.
Frequently asked questions
What are the coldest months in Altaville?
What are December temperatures in Altaville?
What is the average humidity in December in Altaville?
How much does it rain in Altaville in December?
How many days does it snow in December in Altaville?
What is the month with the shortest days in Altaville?
How many hours of daylight does Altaville have in December?
What time are sunrise and sunset in December in Altaville?
What is the month with the least sunshine in Altaville?
How many hours of sunshine does Altaville have in December?
How high is the UV index in December in Altaville?
Average temperature in December
Altaville, CA
- Average high temperature in December: 53.2°F
The warmest month (with the highest average high temperature) is July (91.9°F).
The month with the lowest average high temperature is December (53.2°F).
- Average low temperature in December: 37.8°F
The month with the highest average low temperature is July (62.6°F).
The coldest month (with the lowest average low temperature) is December (37.8°F).
Average pressure in December
Altaville, CA
- Average pressure in December: 30.13"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in December
Altaville, CA
- Average wind speed in December: 4.8mph
The windiest month (with the highest average wind speed) is February (5.7mph).
The calmest month (with the lowest average wind speed) is November (4.7mph).
Average humidity in December
Altaville, CA
- Average humidity in December: 67%
The month with the highest relative humidity is March (71%).
The months with the lowest relative humidity are July and August (34%).
Average rainfall in December
Altaville, CA
- Average rainfall in December: 3.9"
The wettest month (with the highest rainfall) is March (4.76").
The driest months (with the least rainfall) are July and August (0.04").
Average rainfall days in December
Altaville, CA
- Average rainfall days in December: 9.5 days
The month with the highest number of rainy days is March (13 days).
The month with the least rainy days is August (1.2 days).
Average snowfall in December
Altaville, CA
- Average snowfall in December: 0.39"
The month with the highest snowfall is February (2.32").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in December
Altaville, CA
- Average snowfall days in December: 0.2 days
The month with the highest number of snowfall days is February (1.2 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight in December /
Average sunshine in December
Altaville, CA
- Average daylight in December: 9h and 4min
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 36min).
- Average sunshine in December: 5h and 5min
The month with the most sunshine is July (Average sunshine: 12h and 12min).
The month with the least sunshine is December (Average sunshine: 5h and 48min).
Average sunshine days in December
Altaville, CA
- Average sunshine days in December: 20.6 days
The month with the most sunshine days is July (29.1 days).
The month with the least sunshine days is March (16.8 days).
Average UV index in December
Altaville, CA
- Average UV index in December: 3
The months with the highest UV index are June and July (UV index 7).
The month with the lowest UV index is November (UV index 2).
Average cloud cover in December
Altaville, CA
- Average cloud cover in December: 33
The month with the most cloud cover is March (Cloud cover 37).
The month with the least cloud cover is July (Cloud cover 4).
Average visibility in December
Altaville, 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).
Altaville, California, USA
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