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
San Ardo's December weather reaches an average high of 58.1°F (14.5°C) and an average low of 42.8°F (6°C), making it the coldest month.Humidity
The average relative humidity in December is 66%.Rainfall
In San Ardo, during December, the rain falls for 8 days and regularly aggregates up to 1.57" (40mm) of precipitation. In San Ardo, during the entire year, the rain falls for 55.2 days and collects up to 9.06" (230mm) of precipitation.Daylight
December has the shortest days of the year, with an average of 9h and 48min of daylight.On the first day of the month, sunrise is at 6:56 am and sunset at 4:49 pm. On the last day of December, sunrise is at 7:14 am and sunset at 4:59 pm PST.
Sunshine
The months with the least sunshine are February and December, with an average of 6.4h of sunshine.UV index
The months with the lowest UV index are February, November and December, with an average maximum UV index of 3. A UV Index estimate of 3 to 5 represents a medium health hazard from unprotected exposure to Sun's UV rays for the average person.Note: The maximum UV index, 3 during December, leads to the following recommendations:
Make use of precautions - Suggestions to resist sunburn are communicated. Avoiding the Sun's peak radiation during midday hours is essential for health and safety. 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 month?
What are the temperatures in San Ardo in December?
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?
What time are sunrise and sunset in December?
What is the month with the least sunshine?
How long on average sun shines in December?
When is the lowest UV index?
What is the UV index intensity in December?
Average temperature in December
San Ardo, CA
- Average high temperature in December: 58.1°F
The warmest month (with the highest average high temperature) is July (87.1°F).
The month with the lowest average high temperature is December (58.1°F).
- Average low temperature in December: 42.8°F
The month with the highest average low temperature is August (60.8°F).
The coldest months (with the lowest average low temperature) are February and December (42.8°F).
Average pressure in December
San Ardo, 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 June and September (29.91"Hg).
Average wind speed in December
San Ardo, CA
- Average wind speed in December: 4.8mph
The windiest month (with the highest average wind speed) is May (6.1mph).
The calmest month (with the lowest average wind speed) is September (4.5mph).
Average humidity in December
San Ardo, CA
- Average humidity in December: 66%
The month with the highest relative humidity is February (68%).
The month with the lowest relative humidity is September (47%).
Average rainfall in December
San Ardo, CA
- Average rainfall in December: 1.57"
The wettest month (with the highest rainfall) is January (1.77").
The driest month (with the least rainfall) is August (0.04").
Average rainfall days in December
San Ardo, CA
- Average rainfall days in December: 8 days
The month with the highest number of rainy days is March (10.5 days).
The month with the least rainy days is August (0.8 days).
Average daylight in December /
Average sunshine in December
San Ardo, CA
- Average daylight in December: 9h and 5min
The month with the longest days is June (Average daylight: 14h and 36min).
The month with the shortest days is December (Average daylight: 9h and 48min).
- Average sunshine in December: 6h and 2min
The months with the most sunshine are June and July (Average sunshine: 12h and 6min).
The months with the least sunshine are February and December (Average sunshine: 6h and 24min).
Average sunshine days in December
San Ardo, CA
- Average sunshine days in December: 22 days
The month with the most sunshine days is August (29 days).
The month with the least sunshine days is February (19.8 days).
Average UV index in December
San Ardo, CA
- Average UV index in December: 3
The months with the highest UV index are June, July, August and September (UV index 6).
The months with the lowest UV index are February, November and December (UV index 3).
Average cloud cover in December
San Ardo, CA
- Average cloud cover in December: 28
The month with the most cloud cover is March (Cloud cover 29).
The months with the least cloud cover are July, August and September (Cloud cover 5).
Average visibility in December
San Ardo, 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).
San Ardo, California, USA
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