December weather forecastPotter Valley, CA
December
Weather in December
December, the first month of the winter in Potter Valley, is also a fresh month, with an average temperature fluctuating between 35.2°F (1.8°C) and 51.3°F (10.7°C).Temperature
Potter Valley's coldest temperatures are experienced in December, with average high temperatures of 51.3°F (10.7°C) and lows of 35.2°F (1.8°C).Humidity
In December, the average relative humidity is 76%.Rainfall
In Potter Valley, in December, during 8.3 rainfall days, 1.69" (43mm) of precipitation is typically accumulated. In Potter Valley, California, during the entire year, the rain falls for 61.6 days and collects up to 10.47" (266mm) of precipitation.Snowfall
April through October and December are months without snowfall.Daylight
December has the shortest days of the year, with an average of 9h and 30min of daylight.On the first day of December in Potter Valley, sunrise is at 7:13 am and sunset at 4:49 pm. On the last day of the month, sunrise is at 7:32 am and sunset at 4:59 pm PST.
Sunshine
With an average of 5.3h of sunshine, December has the least sunshine of the year in Potter Valley.UV index
The months with the lowest UV index are February, November and December, with an average maximum UV index of 2. A UV Index reading of 2, and below, represents a low threat to health from exposure to the Sun's UV radiation for average individuals.Note: The maximum daily UV index, 2 in December, converts into the following recommendations:
Though the majority can handle prolonged sun exposure, it is crucial to always shield babies, children, and those with fair skin. Given the potency of the midday Sun's UV radiation, one should avoid prolonged exposure. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Potter Valley, CA
- Average high temperature in December: 51.3°F
The warmest month (with the highest average high temperature) is July (85.5°F).
The month with the lowest average high temperature is December (51.3°F).
- Average low temperature in December: 35.2°F
The month with the highest average low temperature is July (53.4°F).
The coldest months (with the lowest average low temperature) are February, March and December (35.2°F).
Average pressure in December
Potter Valley, CA
- Average pressure in December: 30.11"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The months with the lowest atmospheric pressure are June and August (29.92"Hg).
Average wind speed in December
Potter Valley, CA
- Average wind speed in December: 4.2mph
The windiest months (with the highest average wind speed) are March and April (4.6mph).
The calmest month (with the lowest average wind speed) is August (3.6mph).
Average humidity in December
Potter Valley, CA
- Average humidity in December: 76%
The month with the highest relative humidity is March (79%).
The month with the lowest relative humidity is July (54%).
Average rainfall in December
Potter Valley, CA
- Average rainfall in December: 1.69"
The wettest month (with the highest rainfall) is February (2.28").
The driest months (with the least rainfall) are July, August and September (0.08").
Average rainfall days in December
Potter Valley, CA
- Average rainfall days in December: 8.3 days
The month with the highest number of rainy days is March (10.3 days).
The months with the least rainy days are August and September (1.8 days).
Average snowfall in December
Potter Valley, CA
- Average snowfall in December: 0"
The month with the highest snowfall is January (1.02").
The months with the least snowfall are April, May, June, July, August, September, October and December (0").
Average snowfall days in December
Potter Valley, CA
- Average snowfall days in December: 0 days
The month with the highest number of snowfall days is February (0.9 days).
The months with the least snowfall days are April, May, June, July, August, September, October and December (0 days).
Average daylight in December /
Average sunshine in December
Potter Valley, CA
- Average daylight in December: 9h and 30min
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 30min).
- Average sunshine in December: 5h and 18min
The month with the most sunshine is July (Average sunshine: 12h and 0min).
The month with the least sunshine is December (Average sunshine: 5h and 18min).
Average sunshine days in December
Potter Valley, CA
- Average sunshine days in December: 21.5 days
The month with the most sunshine days is July (28.5 days).
The month with the least sunshine days is March (20.2 days).
Average UV index in December
Potter Valley, 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 February, November and December (UV index 2).
Average cloud cover in December
Potter Valley, CA
- Average cloud cover in December: 43
The month with the most cloud cover is March (Cloud cover 47).
The months with the least cloud cover are July and August (Cloud cover 6).
Average visibility in December
Potter Valley, CA
- Average visibility in December: 5mi
The months with the highest visibility are May, June, July, August, September and October (6mi).
The months with the lowest visibility are January, February, March, April, November and December (5mi).
