December weather forecast
Emeryville, CA

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Colorful sky at dusk, with stunning water reflection of numerous boats, docked on the San Francisco Bay in Emeryville, California
Colorful sky at dusk, with stunning water reflection of numerous boats, docked on the San Francisco Bay in Emeryville, California

Weather in December

The first month of the winter, December, is also a moderate month in Emeryville, California, with an average temperature varying between 44.6°F (7°C) and 55.4°F (13°C).

Temperature

Emeryville reaches its lowest average temperatures in December, measuring 55.4°F (13°C) at the peak and 44.6°F (7°C) at the lowest.

Humidity

In December, the average relative humidity is 71%.

Rainfall

In Emeryville, in December, it is raining for 7.5 days, with typically 0.87" (22mm) of accumulated precipitation. In Emeryville, California, during the entire year, the rain falls for 55.6 days and collects up to 5.24" (133mm) of precipitation.

Daylight

The month with the shortest days is December, with an average of 9h and 36min of daylight.
On the first day of December in Emeryville, California, sunrise is at 7:06 am and sunset at 4:50 pm. On the last day of the month, sunrise is at 7:24 am and sunset at 5:00 pm PST.

Sunshine

December has the least sunshine of the year in Emeryville, with an average of 5.8h of sunshine.

UV index

January, 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 medium health hazard from unsafe exposure to UV radiation for the ordinary person.
Note: An average maximum UV index of 3 in December leads to these recommendations:
Be mindful. Individuals with a lighter skin tone may suffer burns in less than 30 minutes. When the Sun is at its strongest around midday, find shade and limit exposure. Experience reduced UV exposure by about half when donning a wide-brim hat.
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Frequently asked questions

What are the coldest months in Emeryville?

The month of December, characterized by an average high of 55.4°F (13°C) and a low of 44.6°F (7°C), is recognized as the coldest in Emeryville, California.

What are December temperatures in Emeryville?

Emeryville in December has an average high-temperature of 55.4°F (13°C) and an average low-temperature of 44.6°F (7°C).

What is the average humidity in December in Emeryville?

In December, the average relative humidity is 71%.

How much does it rain in Emeryville in December?

In Emeryville, in December, it is raining for 7.5 days, with typically 0.87" (22mm) of accumulated precipitation.

What is the month with the shortest days in Emeryville?

The month with the shortest days in Emeryville is December, with an average of 9h and 36min of daylight.

How many hours of daylight does Emeryville have in December?

In December, the average day length in Emeryville is 9h and 36min.

What time are sunrise and sunset in December in Emeryville?

In December, on the first day of the month, sunrise is at 7:06 am and sunset at 4:50 pm. On the last day of the month, in Emeryville, California, sunrise is at 7:24 am and sunset at 5:00 pm PST.

What is the month with the least sunshine in Emeryville?

The month with the least sunshine in Emeryville, California, is December, with an average of 5.8h of sunshine.

How long on average sun shines in December in Emeryville?

The average sunshine duration in December in Emeryville is 5.8h.

What is the month with the lowest UV index in Emeryville?

January, February, November and December, with an average maximum UV index of 3, are months with the lowest UV index in Emeryville.

What is the UV index reading in December in Emeryville?

The average daily maximum UV index in December in Emeryville is 3. A UV Index estimate of 3 to 5 represents a medium hazard to health from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in December
Emeryville, CA

Average temperature in December - Emeryville, CA
  • Average high temperature in December: 55.4°F

The warmest month (with the highest average high temperature) is September (76.6°F).
The month with the lowest average high temperature is December (55.4°F).

  • Average low temperature in December: 44.6°F

The month with the highest average low temperature is September (56.8°F).
The coldest month (with the lowest average low temperature) is January (44.2°F).

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Average pressure in December
Emeryville, CA

Average pressure in December - Emeryville, 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).

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Average wind speed in December
Emeryville, CA

Average wind speed in December - Emeryville, CA
  • Average wind speed in December: 5.7mph

The windiest month (with the highest average wind speed) is May (7.3mph).
The calmest month (with the lowest average wind speed) is November (5mph).

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Average humidity in December
Emeryville, CA

Average humidity in December - Emeryville, CA
  • Average humidity in December: 71%

The month with the highest relative humidity is March (75%).
The month with the lowest relative humidity is October (64%).

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Average rainfall in December
Emeryville, CA

Average rainfall in December - Emeryville, CA
  • Average rainfall in December: 0.87"

The wettest month (with the highest rainfall) is February (1.1").
The driest months (with the least rainfall) are June, July, August and September (0.08").

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Average rainfall days in December
Emeryville, CA

Average rainfall days in December - Emeryville, CA
  • Average rainfall days in December: 7.5 days

The month with the highest number of rainy days is March (8.7 days).
The month with the least rainy days is August (1.5 days).

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

Average daylight in December / Average sunshine in December - Emeryville, 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: 11h and 54min).
The month with the least sunshine is December (Average sunshine: 5h and 48min).

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Average sunshine days in December
Emeryville, CA

Average sunshine days in December - Emeryville, CA
  • Average sunshine days in December: 22.1 days

The month with the most sunshine days is October (26 days).
The month with the least sunshine days is February (20.5 days).

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Average UV index in December
Emeryville, CA

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

The months with the highest UV index are April, May, June, July, August and September (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 3).

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Average cloud cover in December
Emeryville, CA

Average cloud cover in December - Emeryville, CA
  • Average cloud cover in December: 35

The month with the most cloud cover is March (Cloud cover 36).
The month with the least cloud cover is July (Cloud cover 11).

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Average visibility in December
Emeryville, CA

Average visibility in December - Emeryville, 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).

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Emeryville, California, USA

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