December weather forecastAntioch, CA
December
Weather in December
December, the first month of the winter in Antioch, is also a fresh month, with an average temperature varying between 41.7°F (5.4°C) and 55°F (12.8°C).Temperature
Temperature readings reach their annual highs in December, averaging 55°F (12.8°C) and a minimum average of 41.7°F (5.4°C).Humidity
In December, the average relative humidity in Antioch, California, is 71%.Rainfall
In December, in Antioch, the rain falls for 9.3 days. Throughout December, 1.57" (40mm) of precipitation is accumulated. Throughout the year, in Antioch, there are 62 rainfall days, and 10.16" (258mm) of precipitation is accumulated.Snowfall
December is the only month when snow falls. The month with the most snowfall days is December, when snow falls for 0.1 days.Daylight
With an average of 9h and 36min of daylight, December has the shortest days of the year in Antioch.On the first day of the month, sunrise is at 7:05 am and sunset at 4:47 pm. On the last day of December, sunrise is at 7:23 am and sunset at 4:58 pm PST.
Sunshine
With an average of 5.8h of sunshine, December has the least sunshine of the year.UV index
The months with the lowest UV index in Antioch are January, February, November and December, with an average maximum UV index of 3. A UV Index estimate of 3 to 5 represents a medium health hazard from exposure to the Sun's UV radiation for ordinary individuals.Note: During December, 3 as the daily maximum UV index converts into the following advice:
Be careful. Light complexion individuals might get burns in fewer than 30 minutes. Midday is the peak time for the Sun's radiation; stay in the shade and protect yourself. Enhance your sun protection with tightly woven, yet airy clothing. Be alert to the fact! The reflection from snow can nearly double the UV radiation of the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Antioch, CA
- Average high temperature in December: 55°F
The warmest month (with the highest average high temperature) is July (88.5°F).
The month with the lowest average high temperature is December (55°F).
- Average low temperature in December: 41.7°F
The month with the highest average low temperature is September (57.7°F).
The coldest month (with the lowest average low temperature) is January (41.5°F).
Average pressure in December
Antioch, 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
Antioch, CA
- Average wind speed in December: 5mph
The windiest month (with the highest average wind speed) is June (7.8mph).
The calmest months (with the lowest average wind speed) are January and November (4.5mph).
Average humidity in December
Antioch, CA
- Average humidity in December: 71%
The month with the highest relative humidity is January (74%).
The month with the lowest relative humidity is September (52%).
Average rainfall in December
Antioch, CA
- Average rainfall in December: 1.57"
The wettest month (with the highest rainfall) is February (2.09").
The driest months (with the least rainfall) are July and August (0.04").
Average rainfall days in December
Antioch, CA
- Average rainfall days in December: 9.3 days
The month with the highest number of rainy days is March (12.3 days).
The month with the least rainy days is August (0.8 days).
Average snowfall days in December
Antioch, CA
- Average snowfall days in December: 0.1 days
The month with the highest number of snowfall days is December (0.1 days).
The months with the least snowfall days are January, February, March, April, May, June, July, August, September, October and November (0 days).
Average daylight in December /
Average sunshine in December
Antioch, 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 48min
The month with the most sunshine is July (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 5h and 48min).
Average sunshine days in December
Antioch, CA
- Average sunshine days in December: 21.1 days
The month with the most sunshine days is August (29.8 days).
The month with the least sunshine days is March (17.7 days).
Average UV index in December
Antioch, 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
Antioch, CA
- Average cloud cover in December: 35
The months with the most cloud cover are March and December (Cloud cover 35).
The month with the least cloud cover is July (Cloud cover 5).
Average visibility in December
Antioch, 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).
