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 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 the month that records the lowest temperatures, with averages ranging from a high of 53.4°F (11.9°C) to a low of 43.9°F (6.6°C).Humidity
In Alderpoint, the average relative humidity in December is 78%.Rainfall
December is the month with the most rainfall. Rain falls for 14.8 days and accumulates 5.31" (135mm) of precipitation.Snowfall
In Alderpoint, snow does not fall in January, March through December.Daylight
The month with the shortest days is December, with an average of 9h and 24min of daylight.On the first day of the month, sunrise is at 7:18 am and sunset at 4:49 pm. On the last day of December, sunrise is at 7:36 am and sunset at 4:58 pm PST.
Sunshine
The month with the least sunshine is December, with an average of 5h of sunshine.UV index
The months with the lowest UV index are January through March, November and December, with an average maximum UV index of 3. A UV Index value of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV radiation for the average person.Note: In December, the maximum UV index of 3 suggests this advice:
Stay alert. Light-skinned people could suffer burns in less than 30 minutes. When the Sun is at its strongest around midday, find shade and limit exposure. Always opt for UVA and UVB-resistant sunglasses on radiant days.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the coldest months?
What is the average December temperature?
What is the average humidity in December in Alderpoint?
What is the wettest month?
How much does it rain in December?
When it does not snow?
What is the month with the shortest days?
How many hours of daylight does Alderpoint have in December?
What time are sunrise and sunset in December?
What is the month with the least sunshine?
How many hours of sunshine does Alderpoint have in December?
When is the lowest UV index?
What is the UV index reading in December?
Average temperature in December
Alderpoint, CA
- Average high temperature in December: 53.4°F
The warmest month (with the highest average high temperature) is September (69.8°F).
The month with the lowest average high temperature is December (53.4°F).
- Average low temperature in December: 43.9°F
The months with the highest average low temperature are July, August and September (54.3°F).
The coldest month (with the lowest average low temperature) is February (43.5°F).
Average pressure in December
Alderpoint, CA
- Average pressure in December: 30.1"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The months with the lowest atmospheric pressure are August and September (29.95"Hg).
Average wind speed in December
Alderpoint, CA
- Average wind speed in December: 8.6mph
The windiest month (with the highest average wind speed) is June (10.6mph).
The calmest months (with the lowest average wind speed) are January and August (7.8mph).
Average humidity in December
Alderpoint, CA
- Average humidity in December: 78%
The month with the highest relative humidity is March (81%).
The month with the lowest relative humidity is September (72%).
Average rainfall in December
Alderpoint, CA
- Average rainfall in December: 5.31"
The wettest month (with the highest rainfall) is December (5.31").
The driest month (with the least rainfall) is July (0.08").
Average rainfall days in December
Alderpoint, CA
- Average rainfall days in December: 14.8 days
The month with the highest number of rainy days is March (16.4 days).
The month with the least rainy days is August (1.8 days).
Average snowfall days in December
Alderpoint, CA
- Average snowfall days in December: 0 days
The month with the highest number of snowfall days is February (0.1 days).
The months with the least snowfall days are January, March, April, May, June, July, August, September, October, November and December (0 days).
Average daylight in December /
Average sunshine in December
Alderpoint, CA
- Average daylight in December: 9h and 2min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in December: 5h and 0min
The months with the most sunshine are July and August (Average sunshine: 11h and 42min).
The month with the least sunshine is December (Average sunshine: 5h and 0min).
Average sunshine days in December
Alderpoint, CA
- Average sunshine days in December: 15.5 days
The month with the most sunshine days is July (28.4 days).
The month with the least sunshine days is March (13.1 days).
Average UV index in December
Alderpoint, CA
- Average UV index in December: 3
The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, February, March, November and December (UV index 3).
Average cloud cover in December
Alderpoint, CA
- Average cloud cover in December: 44
The month with the most cloud cover is March (Cloud cover 46).
The month with the least cloud cover is July (Cloud cover 10).
Average visibility in December
Alderpoint, 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).
Alderpoint, California, USA
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