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
The coldest period tends to be December, when average temperatures fluctuate between a high of 65.8°F (18.8°C) and a low of 50.4°F (10.2°C).Humidity
December is the most humid month, with an average relative humidity of 41%.Rainfall
In Wister, in December, during 2.2 rainfall days, 0.2" (5mm) of precipitation is typically accumulated. Throughout the year, there are 34.3 rainfall days, and 3.46" (88mm) of precipitation is accumulated.Daylight
With an average of 10h and 0min of daylight, December has the shortest days of the year.On the first day of December in Wister, California, sunrise is at 6:28 am and sunset at 4:34 pm. On the last day of the month, sunrise is at 6:45 am and sunset at 4:45 pm PST.
Sunshine
With an average of 7h of sunshine, December has the least sunshine of the year.UV index
With an average maximum UV index of 4, December is the month with the lowest UV index. A UV Index estimate of 3 to 5 represents a medium health hazard from exposure to the Sun's UV radiation for average individuals.Note: In December, an average UV index of 4 transforms into the following instructions:
Take heed. Individuals of lighter complexion can be burned in less than half an hour. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Experience reduced UV exposure by about half when donning a wide-brim hat.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What month is the coldest?
What is the temperature in December?
What is the most humid month in Wister?
What is the average humidity in December?
How many days does it rain in December?
What is the month with the shortest days in Wister?
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 in Wister?
How many hours of sunshine does Wister have in December?
When is the lowest UV index?
What is the UV index intensity in December?
Average temperature in December
Wister, CA
- Average high temperature in December: 65.8°F
The warmest month (with the highest average high temperature) is July (105.8°F).
The month with the lowest average high temperature is December (65.8°F).
- Average low temperature in December: 50.4°F
The month with the highest average low temperature is August (84.7°F).
The coldest months (with the lowest average low temperature) are January and December (50.4°F).
Average pressure in December
Wister, CA
- Average pressure in December: 30.05"Hg
The month with the highest atmospheric pressure is January (30.08"Hg).
The month with the lowest atmospheric pressure is June (29.77"Hg).
Average wind speed in December
Wister, CA
- Average wind speed in December: 5.8mph
The windiest months (with the highest average wind speed) are April and May (8.1mph).
The calmest month (with the lowest average wind speed) is January (5.5mph).
Average humidity in December
Wister, CA
- Average humidity in December: 41%
The month with the highest relative humidity is December (41%).
The month with the lowest relative humidity is June (22%).
Average rainfall in December
Wister, CA
- Average rainfall in December: 0.2"
The wettest month (with the highest rainfall) is July (0.87").
The driest month (with the least rainfall) is May (0").
Average rainfall days in December
Wister, CA
- Average rainfall days in December: 2.2 days
The month with the highest number of rainy days is July (8.3 days).
The month with the least rainy days is May (0.8 days).
Average daylight in December /
Average sunshine in December
Wister, CA
- Average daylight in December: 10h and 0min
The month with the longest days is June (Average daylight: 14h and 18min).
The month with the shortest days is December (Average daylight: 10h and 0min).
- Average sunshine in December: 7h and 0min
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 0min).
Average sunshine days in December
Wister, CA
- Average sunshine days in December: 28.2 days
The month with the most sunshine days is May (30 days).
The month with the least sunshine days is July (19 days).
Average UV index in December
Wister, CA
- Average UV index in December: 4
The month with the highest UV index is July (UV index 9).
The month with the lowest UV index is December (UV index 4).
Average cloud cover in December
Wister, CA
- Average cloud cover in December: 18
The month with the most cloud cover is December (Cloud cover 18).
The month with the least cloud cover is June (Cloud cover 5).
Average visibility in December
Wister, 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).
Wister, California, USA
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