Contents
- Weather in December
- Frequently asked questions
- Average temperature in December
- Average pressure in December
- Average wind speed in December
- Average humidity in December
- Average rainfall in December
- Average rainfall days in December
- Average daylight in December
- Average sunshine in December
- Average sunshine days in December
- Average UV index in December
- Average cloud cover in December
- Average visibility in December
Weather in December
Temperature
With its high average temperature of 56.5°F (13.6°C) and a low of 43.7°F (6.5°C), December is regarded as the coldest month.Humidity
In Newark, the average relative humidity in December is 70%.Rainfall
In Newark, in December, during 7.3 rainfall days, 0.39" (10mm) of precipitation is typically accumulated. Throughout the year, there are 43.5 rainfall days, and 2.36" (60mm) of precipitation is accumulated.Daylight
The month with the shortest days is December, with an average of 9h and 36min of daylight.On the first day of the month, sunrise is at 7:04 am and sunset at 4:50 pm. On the last day of December, in Newark, sunrise is at 7:22 am and sunset at 5:00 pm PST.
Sunshine
With an average of 5.9h of sunshine, December has the least sunshine of the year.UV index
February, November and December, with an average maximum UV index of 3, are months with the lowest UV index. A UV Index reading of 3 to 5 represents a moderate health risk from exposure to the Sun's UV radiation for the ordinary person.Note: A typical high UV index of 3 in December suggests the following recommendations:
Stay alert. Light-skinned people could suffer burns in less than 30 minutes. Midday is the peak time for the Sun's radiation; stay in the shade and protect yourself. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What time of the year is the coldest?
What is the temperature in December?
What is the average humidity in December?
How many days does it rain in December?
What is the month with the shortest days?
How many hours of daylight does Newark have in December?
What time are sunrise and sunset in December?
What is the month with the least sunshine?
How many hours of sunshine does Newark have in December?
What is the month with the lowest UV index?
How high is the UV index in December?
Average temperature in December
Newark, CA
- Average high temperature in December: 56.5°F
The warmest month (with the highest average high temperature) is July (80.6°F).
The month with the lowest average high temperature is December (56.5°F).
- Average low temperature in December: 43.7°F
The month with the highest average low temperature is August (56.8°F).
The coldest months (with the lowest average low temperature) are January, February and December (43.7°F).
Average pressure in December
Newark, CA
- Average pressure in December: 30.11"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
Newark, CA
- Average wind speed in December: 5.2mph
The windiest month (with the highest average wind speed) is May (6.2mph).
The calmest months (with the lowest average wind speed) are October and November (4.6mph).
Average humidity in December
Newark, CA
- Average humidity in December: 70%
The month with the highest relative humidity is March (72%).
The months with the lowest relative humidity are July and September (61%).
Average rainfall in December
Newark, CA
- Average rainfall in December: 0.39"
The wettest months (with the highest rainfall) are February and March (0.47").
The driest months (with the least rainfall) are July and August (0").
Average rainfall days in December
Newark, CA
- Average rainfall days in December: 7.3 days
The month with the highest number of rainy days is March (8.2 days).
The month with the least rainy days is July (0.3 days).
Average daylight in December /
Average sunshine in December
Newark, CA
- Average daylight in December: 9h and 4min
The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 36min).
- Average sunshine in December: 5h and 5min
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 54min).
Average sunshine days in December
Newark, CA
- Average sunshine days in December: 23.2 days
The month with the most sunshine days is July (30.5 days).
The month with the least sunshine days is February (21.3 days).
Average UV index in December
Newark, CA
- Average UV index in December: 3
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 3).
Average cloud cover in December
Newark, CA
- Average cloud cover in December: 34
The month with the most cloud cover is March (Cloud cover 35).
The month with the least cloud cover is July (Cloud cover 6).
Average visibility in December
Newark, 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).
Newark, California, USA
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