December weather forecastOccidental, CA
December
Weather in December
The first month of the winter, December, is still a refreshing month in Occidental, California, with temperature in the range of an average low of 41.4°F (5.2°C) and an average high of 56.3°F (13.5°C).Temperature
December, with an average high of 56.3°F (13.5°C) and a low of 41.4°F (5.2°C), signifies the coldest month of the year.Humidity
In Occidental, the average relative humidity in December is 76%.Rainfall
In Occidental, California, during December, the rain falls for 8.6 days and regularly aggregates up to 2.32" (59mm) of precipitation. Throughout the year, there are 60.1 rainfall days, and 12.87" (327mm) of precipitation is accumulated.Daylight
With an average of 9h and 30min of daylight, December has the shortest days of the year in Occidental.On the first day of the month, sunrise is at 7:10 am and sunset at 4:51 pm. On the last day of December, in Occidental, sunrise is at 7:28 am and sunset at 5:01 pm PST.
Sunshine
December has the least sunshine of the year in Occidental, with an average of 5.4h of sunshine.UV index
The months with the lowest UV index in Occidental are January, February, November and December, with an average maximum UV index of 3. A UV Index estimate of 3 to 5 represents a moderate health risk from exposure to the Sun's UV rays for the average person.Note: The maximum daily UV index of 3 in December interprets into the following recommendations:
Be mindful. Individuals with a lighter skin tone may suffer burns in less than 30 minutes. The Sun's radiation is especially intense around midday; try to stay in shade during this period. Combat UV radiation's detrimental effects with sun-safe clothing and UV-blocking eyewear.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Occidental, CA
- Average high temperature in December: 56.3°F
The warmest month (with the highest average high temperature) is August (81°F).
The month with the lowest average high temperature is December (56.3°F).
- Average low temperature in December: 41.4°F
The months with the highest average low temperature are August and September (53.4°F).
The coldest month (with the lowest average low temperature) is December (41.4°F).
Average pressure in December
Occidental, CA
- Average pressure in December: 30.1"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The months with the lowest atmospheric pressure are June, August and September (29.92"Hg).
Average wind speed in December
Occidental, CA
- Average wind speed in December: 5.2mph
The windiest month (with the highest average wind speed) is May (7.2mph).
The calmest month (with the lowest average wind speed) is November (5mph).
Average humidity in December
Occidental, CA
- Average humidity in December: 76%
The month with the highest relative humidity is March (77%).
The month with the lowest relative humidity is September (62%).
Average rainfall in December
Occidental, CA
- Average rainfall in December: 2.32"
The wettest month (with the highest rainfall) is February (3.27").
The driest months (with the least rainfall) are July and August (0.04").
Average rainfall days in December
Occidental, CA
- Average rainfall days in December: 8.6 days
The month with the highest number of rainy days is March (10.3 days).
The month with the least rainy days is August (0.9 days).
Average daylight in December /
Average sunshine in December
Occidental, CA
- Average daylight in December: 9h and 30min
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 24min
The month with the most sunshine is July (Average sunshine: 11h and 48min).
The month with the least sunshine is December (Average sunshine: 5h and 24min).
Average sunshine days in December
Occidental, CA
- Average sunshine days in December: 21.3 days
The month with the most sunshine days is July (28.9 days).
The month with the least sunshine days is February (19.9 days).
Average UV index in December
Occidental, CA
- Average UV index in December: 3
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 3).
Average cloud cover in December
Occidental, CA
- Average cloud cover in December: 39
The month with the most cloud cover is March (Cloud cover 42).
The month with the least cloud cover is July (Cloud cover 11).
Average visibility in December
Occidental, 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).
