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
During the coldest month, December, temperatures average a high of 54.1°F (12.3°C) and a low of 41.2°F (5.1°C).Humidity
In Rio Linda, the average relative humidity in December is 71%.Rainfall
In Rio Linda, in December, during 10.6 rainfall days, 2.72" (69mm) of precipitation is typically accumulated. Throughout the year, there are 75.8 rainfall days, and 16.65" (423mm) of precipitation is accumulated.Snowfall
December is the only month when snow falls. The month with the most snowfall days is December, when snow falls for 0.1 days.Daylight
With an average of 9h and 30min of daylight, December has the shortest days of the year in Rio Linda.On the first day of the month, sunrise is at 7:05 am and sunset at 4:44 pm. On the last day of December, sunrise is at 7:23 am and sunset at 4:54 pm PST.
Sunshine
With an average of 5.7h of sunshine, December has the least sunshine of the year.UV index
January, February, November and December, with an average maximum UV index of 3, are months with the lowest UV index. A UV Index reading of 3 to 5 represents a medium health hazard from unprotected exposure to Sun's UV rays for the ordinary person.Note: A typical high UV index of 3 in December suggests the following recommendations:
Undertake precautions - Obligation exists to protect against skin and eye damage. Solar radiation is at its peak intensity during midday, so it's advisable to stay indoors or in the shade. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses. Note this! The Sun's UV radiation can nearly be doubled by the reflection off snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What time of the year is the coldest?
What is the average December temperature?
What is the average humidity in December?
How much does it rain in December?
When does it snow the most?
When does it start snowing?
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 long on average sun shines in December?
When is the lowest UV index?
What is the UV index reading in December?
Average temperature in December
Rio Linda, CA
- Average high temperature in December: 54.1°F
The warmest month (with the highest average high temperature) is July (94.6°F).
The month with the lowest average high temperature is December (54.1°F).
- Average low temperature in December: 41.2°F
The month with the highest average low temperature is July (60.4°F).
The coldest month (with the lowest average low temperature) is January (41°F).
Average pressure in December
Rio Linda, CA
- Average pressure in December: 30.13"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).
Average wind speed in December
Rio Linda, CA
- Average wind speed in December: 5.3mph
The windiest month (with the highest average wind speed) is February (5.9mph).
The calmest month (with the lowest average wind speed) is September (4.3mph).
Average humidity in December
Rio Linda, CA
- Average humidity in December: 71%
The month with the highest relative humidity is March (75%).
The months with the lowest relative humidity are July and September (43%).
Average rainfall in December
Rio Linda, CA
- Average rainfall in December: 2.72"
The wettest month (with the highest rainfall) is March (3.11").
The driest months (with the least rainfall) are July and August (0.04").
Average rainfall days in December
Rio Linda, CA
- Average rainfall days in December: 10.6 days
The month with the highest number of rainy days is March (13.4 days).
The month with the least rainy days is August (0.8 days).
Average snowfall days in December
Rio Linda, CA
- Average snowfall days in December: 0.1 days
The month with the highest number of snowfall days is December (0.1 days).
The months with the least snowfall days are January, February, March, April, May, June, July, August, September, October and November (0 days).
Average daylight in December /
Average sunshine in December
Rio Linda, CA
- Average daylight in December: 9h and 3min
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 30min).
- Average sunshine in December: 5h and 4min
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 42min).
Average sunshine days in December
Rio Linda, CA
- Average sunshine days in December: 19.6 days
The month with the most sunshine days is August (30 days).
The month with the least sunshine days is March (16.3 days).
Average UV index in December
Rio Linda, CA
- Average UV index in December: 3
The months with the highest UV index are June and July (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 3).
Average cloud cover in December
Rio Linda, CA
- Average cloud cover in December: 36
The month with the most cloud cover is March (Cloud cover 39).
The month with the least cloud cover is July (Cloud cover 4).
Average visibility in December
Rio Linda, 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).
Rio Linda, California, USA
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