December weather forecast and climate
Newark, CA

Weather in December

The first month of the winter, December, is also a moderate month in Newark, California, with average temperature ranging between min 43.7°F (6.5°C) and max 56.5°F (13.6°C).

Temperature

December is the coldest month, with an average high-temperature of 56.5°F (13.6°C) and an average low-temperature of 43.7°F (6.5°C).

Humidity

In Newark, the average relative humidity is 70%.

Rainfall

In Newark, in December, during 7.3 rainfall days, 0.39" (10mm) of precipitation is typically accumulated. Throughout the year, in Newark, there are 43.5 rainfall days, and 2.36" (60mm) of precipitation is accumulated.

Daylight

The month with the shortest days in Newark is December, with an average of 9.6h of daylight.

Sunshine

December has the least sunshine of the year, with an average of 5.9h of sunshine.

UV index

February, November and December, with an average maximum UV index of 3, are months with the lowest UV index in Newark. A UV Index estimate of 3 to 5 represents a moderate health risk from unprotected exposure to the Sun's UV rays for the ordinary person.
Note: The daily maximum UV index of 3 interpret into the following advice:
Take precautions. Light skin individuals may get burned in less than 30 minutes. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.
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FAQ

What is the coldest month in Newark?

With an average high-temperature of 56.5°F (13.6°C) and an average low-temperature of 43.7°F (6.5°C), December is the coldest month in Newark, California.

What is the temperature in December in Newark?

In Newark, in December, the average high-temperature is 56.5°F (13.6°C), and the average low-temperature is 43.7°F (6.5°C).

What is the average humidity in December in Newark?

In December, the average relative humidity is 70%.

How many days does it rain in December in Newark?

In December, the rain falls for 7.3 days. Throughout December, 0.39" (10mm) of precipitation is accumulated.

What is the month with the shortest days in Newark?

With an average of 9.6h of daylight, December has the shortest days of the year.

What is the average length of the day in December in Newark?

In December, the average length of the day is 9.6h.

What is the month with the least sunshine in Newark?

With an average of 5.9h of sunshine, December has the least sunshine of the year.

How many hours of sunshine does Newark have in December?

In Newark, California, the average sunshine in December is 5.9h.

What are the months with the lowest UV index in Newark?

Months with the lowest UV index in Newark are February, November and December, with an average maximum UV index of 3.

How high is the UV index in December in Newark?

In Newark, California, the average daily maximum UV index in December is 3. A UV Index estimate of 3 to 5 represents a moderate vulnerability from unsafe exposure to the Sun's UV rays.

Average temperature in December
Newark, CA

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).

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Average pressure in December
Newark, CA

Average pressure in December - Newark, CA
  • Average pressure in December: 30.11"

The month with the highest atmospheric pressure is January (30.13").
Months with the lowest atmospheric pressure are June, August and September (29.92").

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Average wind speed in December
Newark, CA

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).

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Average humidity in December
Newark, CA

Average humidity in December - Newark, CA
  • Average humidity in December: 70%

The month with the highest relative humidity is March (72%).
Months with the lowest relative humidity are July and September (61%).

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Average rainfall in December
Newark, CA

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").

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Average rainfall days in December
Newark, CA

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).

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Average daylight in December /
Average sunshine in December
Newark, CA

Average daylight in December / Average sunshine in December - Newark, CA
  • Average daylight in December: 9.6h

The month with the longest days is June (Average daylight: 14.7h).
The month with the shortest days is December (Average daylight: 9.6h).

  • Average sunshine in December: 5.9h

The month with the most sunshine is July (Average sunshine: 12.1h).
The month with the least sunshine is December (Average sunshine: 5.9h).

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Average sunshine days in December
Newark, CA

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).

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Average UV index in December
Newark, CA

Average UV index in December - Newark, CA
  • Average UV index in December: 3

Months with the highest UV index are June and July (UV index 6).
Months with the lowest UV index are February, November and December (UV index 3).

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Average cloud cover in December
Newark, CA

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).

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Average visibility in December
Newark, CA

Average visibility in December - Newark, CA
  • Average visibility in December: 6mi

Months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).

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