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 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
The coldest temperatures occur during December, when averages reach a peak of 37.2°F (2.9°C) and a low of 21.6°F (-5.8°C).Humidity
In Sierra City, the average relative humidity in December is 79%.Rainfall
In Sierra City, in December, it is raining for 6.8 days, with typically 3.66" (93mm) of accumulated precipitation. In Sierra City, during the entire year, the rain falls for 80.1 days and collects up to 22.95" (583mm) of precipitation.Snowfall
January through June, September through December are months with snowfall. December is the month with the most snowfall. Snow falls for 12.8 days and accumulates 22.52" (572mm) of snow.Daylight
With an average of 9h and 24min of daylight, December has the shortest days of the year.On the first day of the month, sunrise is at 7:04 am and sunset at 4:39 pm. On the last day of December, sunrise is at 7:22 am and sunset at 4:48 pm PST.
Sunshine
In December, the average sunshine in Sierra City is 5.2h.UV index
In Sierra City, the average daily maximum UV index in December is 2. A UV Index value of 2, and less, symbolizes a minimal health hazard from exposure to the Sun's UV rays for the average person.Note: The maximum UV index, 2 during December, leads to the following recommendations:
Children, infants, and individuals with sensitive skin should be constantly protected from extended sun exposure. Direct Sun exposure should be minimized especially during midday when radiation is most intense. A wide-brimmed hat is a staple for defending the face, eyes, ears, and neck from the Sun. Remember this! The UV radiation of the Sun can be nearly doubled by the reflective properties of snow.
Frequently asked questions
What month is the coldest in Sierra City?
How cold is December in Sierra City?
What is the average humidity in December in Sierra City?
How many days does it rain in December in Sierra City?
When does it snow the most in Sierra City?
How many days does it snow in December in Sierra City?
What is the month with the shortest days in Sierra City?
How many hours of daylight does Sierra City have in December?
When are sunrise and sunset in December in Sierra City?
How many hours of sunshine does Sierra City have in December?
How high is the UV index in December in Sierra City?
Average temperature in December
Sierra City, CA
- Average high temperature in December: 37.2°F
The warmest month (with the highest average high temperature) is July (82.9°F).
The month with the lowest average high temperature is December (37.2°F).
- Average low temperature in December: 21.6°F
The month with the highest average low temperature is July (47.5°F).
The coldest month (with the lowest average low temperature) is December (21.6°F).
Average pressure in December
Sierra City, CA
- Average pressure in December: 30.16"Hg
The month with the highest atmospheric pressure is January (30.19"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).
Average wind speed in December
Sierra City, CA
- Average wind speed in December: 5.7mph
The windiest month (with the highest average wind speed) is March (6.6mph).
The calmest months (with the lowest average wind speed) are August and September (5.2mph).
Average humidity in December
Sierra City, CA
- Average humidity in December: 79%
The months with the highest relative humidity are January and March (81%).
The months with the lowest relative humidity are July and August (40%).
Average rainfall in December
Sierra City, CA
- Average rainfall in December: 3.66"
The wettest month (with the highest rainfall) is March (4.02").
The driest month (with the least rainfall) is August (0.2").
Average rainfall days in December
Sierra City, CA
- Average rainfall days in December: 6.8 days
The month with the highest number of rainy days is May (11.8 days).
The month with the least rainy days is July (3.3 days).
Average snowfall in December
Sierra City, CA
- Average snowfall in December: 22.52"
The month with the highest snowfall is December (22.52").
The months with the least snowfall are July and August (0").
Average snowfall days in December
Sierra City, CA
- Average snowfall days in December: 12.8 days
The month with the highest number of snowfall days is March (14.7 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in December /
Average sunshine in December
Sierra City, CA
- Average daylight in December: 9h and 2min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in December: 5h and 1min
The month with the most sunshine is July (Average sunshine: 12h and 0min).
The month with the least sunshine is January (Average sunshine: 5h and 0min).
Average sunshine days in December
Sierra City, CA
- Average sunshine days in December: 15.5 days
The month with the most sunshine days is August (26 days).
The month with the least sunshine days is March (11.8 days).
Average UV index in December
Sierra City, CA
- Average UV index in December: 2
The months with the highest UV index are June, July and August (UV index 5).
The month with the lowest UV index is November (UV index 1).
Average cloud cover in December
Sierra City, CA
- Average cloud cover in December: 45
The month with the most cloud cover is March (Cloud cover 47).
The month with the least cloud cover is July (Cloud cover 7).
Average visibility in December
Sierra City, CA
- Average visibility in December: 4mi
The months with the highest visibility are May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January and December (4mi).
Sierra City, California, USA
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