December weather forecastKnob, CA
December
Weather in December
The first month of the winter, December, is also a frosty month in Knob, California, with an average temperature ranging between min 30.2°F (-1°C) and max 46°F (7.8°C).Temperature
Temperature records mark December as the coldest month, with highs averaging 46°F (7.8°C) and lows at 30.2°F (-1°C).Humidity
In Knob, the average relative humidity in December is 80%.Rainfall
The month with the most rainfall in Knob is December, when the rain falls for 11.5 days and typically aggregates up to 4.17" (106mm) of precipitation.Snowfall
January through May, November and December are months with snowfall. In Knob, California, during December, snow falls for 3.8 days and regularly aggregates up to 5.08" (129mm) of snow. In Knob, California, during the entire year, snow falls for 21.4 days and aggregates up to 28.74" (730mm) of snow.Daylight
With an average of 9h and 18min of daylight, December has the shortest days of the year.On the first day of the month, sunrise is at 7:16 am and sunset at 4:46 pm. On the last day of December, sunrise is at 7:34 am and sunset at 4:55 pm PST.
Sunshine
With an average of 4.7h of sunshine, December has the least sunshine of the year in Knob.UV index
The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2. A UV Index value of 2, and less, symbolizes a minimal health hazard from exposure to the Sun's UV radiation for the average person.Note: A maximum high UV index of 2 in December translates into the following recommendations:
Extended sun exposure is not an issue for the majority. Children, infants, and fair-skinned individuals always need to be protected. Exposing oneself to the midday Sun can be harmful due to the strong UV radiation; limit your time outside. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses. Take heed! The reflection of snow can intensify the Sun's UV radiation nearly double.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Knob, CA
- Average high temperature in December: 46°F
The warmest months (with the highest average high temperature) are July and August (86.5°F).
The month with the lowest average high temperature is December (46°F).
- Average low temperature in December: 30.2°F
The month with the highest average low temperature is July (51.1°F).
The coldest month (with the lowest average low temperature) is December (30.2°F).
Average pressure in December
Knob, CA
- Average pressure in December: 30.12"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is August (29.93"Hg).
Average wind speed in December
Knob, CA
- Average wind speed in December: 4mph
The windiest month (with the highest average wind speed) is April (4.8mph).
The calmest month (with the lowest average wind speed) is August (3.3mph).
Average humidity in December
Knob, CA
- Average humidity in December: 80%
The month with the highest relative humidity is March (81%).
The month with the lowest relative humidity is August (52%).
Average rainfall in December
Knob, CA
- Average rainfall in December: 4.17"
The wettest month (with the highest rainfall) is December (4.17").
The driest month (with the least rainfall) is July (0.16").
Average rainfall days in December
Knob, CA
- Average rainfall days in December: 11.5 days
The month with the highest number of rainy days is March (15.3 days).
The month with the least rainy days is August (2.3 days).
Average snowfall in December
Knob, CA
- Average snowfall in December: 5.08"
The month with the highest snowfall is February (7.52").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days in December
Knob, CA
- Average snowfall days in December: 3.8 days
The month with the highest number of snowfall days is February (5 days).
The months with the least snowfall days are June, July, August, September and October (0 days).
Average daylight in December /
Average sunshine in December
Knob, CA
- Average daylight in December: 9h and 18min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in December: 4h and 42min
The months with the most sunshine are July and August (Average sunshine: 11h and 54min).
The month with the least sunshine is December (Average sunshine: 4h and 42min).
Average sunshine days in December
Knob, CA
- Average sunshine days in December: 16.6 days
The month with the most sunshine days is July (26 days).
The month with the least sunshine days is March (13.6 days).
Average UV index in December
Knob, CA
- Average UV index in December: 2
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in December
Knob, CA
- Average cloud cover in December: 51
The month with the most cloud cover is March (Cloud cover 52).
The month with the least cloud cover is August (Cloud cover 7).
Average visibility in December
Knob, CA
- Average visibility in December: 4mi
The months with the highest visibility are May, June, July, August, September and October (6mi).
The months with the lowest visibility are March and December (4mi).
