December weather forecastBenicia, CA
December
Weather in December
The first month of the winter, December, is also a moderate month in Benicia, California, with an average temperature ranging between max 55.4°F (13°C) and min 42.3°F (5.7°C).Temperature
Benicia's December weather, with an average high temperature of 55.4°F (13°C) and an average low temperature of 42.3°F (5.7°C), tends to be the coldest of the year.Humidity
The average relative humidity in December is 70%.Rainfall
In Benicia, in December, it is raining for 7.2 days, with typically 0.79" (20mm) of accumulated precipitation. In Benicia, during the entire year, the rain falls for 48.9 days and collects up to 4.96" (126mm) of precipitation.Daylight
The month with the shortest days in Benicia is December, with an average of 9h and 36min of daylight.On the first day of December in Benicia, sunrise is at 7:06 am and sunset at 4:49 pm. On the last day of the month, sunrise is at 7:24 am and sunset at 4:59 pm PST.
Sunshine
December has the least sunshine of the year in Benicia, California, with an average of 5.7h of sunshine.UV index
The months with the lowest UV index 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 average individuals.Note: A daily high UV index of 3 in December leads to these guidelines:
Be vigilant - A duty to shield skin and eyes from injury exists. The Sun is at its harshest during midday; protect yourself by staying in shaded areas and minimizing exposure. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Benicia, CA
- Average high temperature in December: 55.4°F
The warmest month (with the highest average high temperature) is July (84.2°F).
The month with the lowest average high temperature is December (55.4°F).
- Average low temperature in December: 42.3°F
The month with the highest average low temperature is September (57.6°F).
The coldest months (with the lowest average low temperature) are January and December (42.3°F).
Average pressure in December
Benicia, CA
- Average pressure in December: 30.11"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in December
Benicia, CA
- Average wind speed in December: 4.9mph
The windiest month (with the highest average wind speed) is May (7.4mph).
The calmest month (with the lowest average wind speed) is November (4.5mph).
Average humidity in December
Benicia, CA
- Average humidity in December: 70%
The month with the highest relative humidity is March (74%).
The months with the lowest relative humidity are September and October (56%).
Average rainfall in December
Benicia, CA
- Average rainfall in December: 0.79"
The wettest month (with the highest rainfall) is February (0.98").
The driest months (with the least rainfall) are July and August (0.04").
Average rainfall days in December
Benicia, CA
- Average rainfall days in December: 7.2 days
The month with the highest number of rainy days is March (8.3 days).
The month with the least rainy days is August (1 days).
Average daylight in December /
Average sunshine in December
Benicia, CA
- Average daylight in December: 9h and 36min
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 36min).
- Average sunshine in December: 5h and 42min
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 42min).
Average sunshine days in December
Benicia, CA
- Average sunshine days in December: 23.4 days
The month with the most sunshine days is July (29 days).
The months with the least sunshine days are February and March (22.1 days).
Average UV index in December
Benicia, 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
Benicia, CA
- Average cloud cover in December: 36
The months with the most cloud cover are March and December (Cloud cover 36).
The month with the least cloud cover is July (Cloud cover 7).
Average visibility in December
Benicia, 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).
