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 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
During the coldest month, December, temperatures average a high of 60.6°F (15.9°C) and a low of 46.8°F (8.2°C).Humidity
With an average relative humidity of 46%, December is the most humid month.Rainfall
In December, the rain falls for 5 days. Throughout December, 0.55" (14mm) of precipitation is accumulated. In Sandy Korner, California, during the entire year, the rain falls for 46.2 days and collects up to 4.09" (104mm) of precipitation.Daylight
December has the shortest days of the year, with an average of 10h and 0min of daylight.On the first day of December, sunrise is at 6:31 am and sunset at 4:36 pm. On the last day of the month, sunrise is at 6:49 am and sunset at 4:47 pm PST.
Sunshine
With an average of 7.1h of sunshine, December has the least sunshine of the year.UV index
December is the month with the lowest UV index, with an average maximum UV index of 3. A UV Index value of 3 to 5 symbolizes a medium health hazard from unprotected exposure to Sun's UV rays for the average person.Note: A maximum high UV index of 3 in December translates into the following recommendations:
Exercise prudence. Persons with fair skin could be burned in under 30 minutes. Direct exposure to the Sun's intense radiation around midday should be avoided for health reasons. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the coldest time of year?
What are the temperatures in December?
What is the most humid month?
What is the average humidity in December?
How many days does it rain 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?
What is the month with the least sunshine?
How many hours of sunshine does Sandy Korner have in December?
When is the lowest UV index?
How high is the UV index in December?
Average temperature in December
Sandy Korner, CA
- Average high temperature in December: 60.6°F
The warmest month (with the highest average high temperature) is July (95.4°F).
The month with the lowest average high temperature is December (60.6°F).
- Average low temperature in December: 46.8°F
The month with the highest average low temperature is August (76.3°F).
The coldest month (with the lowest average low temperature) is December (46.8°F).
Average pressure in December
Sandy Korner, CA
- Average pressure in December: 30.06"Hg
The month with the highest atmospheric pressure is January (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.8"Hg).
Average wind speed in December
Sandy Korner, CA
- Average wind speed in December: 5.8mph
The windiest month (with the highest average wind speed) is May (8.2mph).
The calmest month (with the lowest average wind speed) is January (5.5mph).
Average humidity in December
Sandy Korner, CA
- Average humidity in December: 46%
The month with the highest relative humidity is December (46%).
The month with the lowest relative humidity is June (29%).
Average rainfall in December
Sandy Korner, CA
- Average rainfall in December: 0.55"
The wettest month (with the highest rainfall) is July (0.79").
The driest months (with the least rainfall) are May and June (0.12").
Average rainfall days in December
Sandy Korner, CA
- Average rainfall days in December: 5 days
The month with the highest number of rainy days is July (6.9 days).
The month with the least rainy days is June (1.5 days).
Average daylight in December /
Average sunshine in December
Sandy Korner, CA
- Average daylight in December: 10h and 0min
The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 10h and 0min).
- Average sunshine in December: 7h and 1min
The month with the most sunshine is June (Average sunshine: 12h and 12min).
The month with the least sunshine is December (Average sunshine: 7h and 6min).
Average sunshine days in December
Sandy Korner, CA
- Average sunshine days in December: 24.2 days
The month with the most sunshine days is October (27.4 days).
The month with the least sunshine days is July (19.4 days).
Average UV index in December
Sandy Korner, CA
- Average UV index in December: 3
The month with the highest UV index is July (UV index 8).
The month with the lowest UV index is December (UV index 3).
Average cloud cover in December
Sandy Korner, CA
- Average cloud cover in December: 17
The month with the most cloud cover is December (Cloud cover 17).
The month with the least cloud cover is June (Cloud cover 4).
Average visibility in December
Sandy Korner, 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).
Sandy Korner, California, USA
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