December weather forecast
Berkeley, CA

the neon-lit iconic Berkeley University Sather Tower in California
the neon-lit iconic Berkeley University Sather Tower in California

Weather in December

December, the first month of the winter in Berkeley, is also a moderate month, with temperature in the range of an average low of 44.6°F (7°C) and an average high of 55.4°F (13°C).

Temperature

December is the coldest month, with an average high-temperature of 55.4°F (13°C) and an average low-temperature of 44.6°F (7°C).

Humidity

In December, the average relative humidity is 71%.

Rainfall

In December, in Berkeley, the rain falls for 7.5 days. Throughout December, 0.87" (22mm) of precipitation is accumulated. Throughout the year, there are 55.6 rainfall days, and 5.24" (133mm) of precipitation is accumulated.

Daylight

The month with the shortest days is December, with an average of 9h and 35min of daylight.
On the first day of December in Berkeley, California, sunrise is at 7:05 am and sunset at 4:50 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, 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 value of 3 to 5 symbolizes a moderate health risk from unsafe exposure to UV radiation for average individuals.
Note: The daily maximum UV index of 3 in December 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. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.
[Resources]

FAQ

What is the coldest month in Berkeley?

With an average high-temperature of 55.4°F (13°C) and an average low-temperature of 44.6°F (7°C), December is the coldest month in Berkeley, California.

What is the temperature in December in Berkeley?

In Berkeley, California, in December, the average high-temperature is 55.4°F (13°C), and the average low-temperature is 44.6°F (7°C).

What is the average humidity in December in Berkeley?

The average relative humidity in December is 71%.

How much does it rain in Berkeley in December?

In Berkeley, California, in December, during 7.5 rainfall days, 0.87" (22mm) of precipitation is typically accumulated.

What is the month with the shortest days in Berkeley?

December has the shortest days of the year, with an average of 9h and 35min of daylight.

How many hours of daylight does Berkeley have in December?

In December, the average day length is 9h and 35min.

When are sunrise and sunset in December in Berkeley?

On the first day of December in Berkeley, sunrise is at 7:05 am and sunset at 4:50 pm. On the last day of the month, sunrise is at 7:24 am and sunset at 4:59 pm PST.

What is the month with the least sunshine in Berkeley?

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

How long on average sun shines in December in Berkeley?

The average sunshine duration in December in Berkeley, California, is 5.8h.

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

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

What is the UV index intensity in December in Berkeley?

The average daily maximum UV index in December in Berkeley is 3. A UV Index reading of 3 to 5 represents a medium hazard to health from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in December
Berkeley, CA

Average temperature in December - Berkeley, 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).

[Resources]

Average pressure in December
Berkeley, CA

Average pressure in December - Berkeley, 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).

[Resources]

Average wind speed in December
Berkeley, CA

Average wind speed in December - Berkeley, 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).

[Resources]

Average humidity in December
Berkeley, CA

Average humidity in December - Berkeley, 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%).

[Resources]

Average rainfall in December
Berkeley, CA

Average rainfall in December - Berkeley, 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").

[Resources]

Average rainfall days in December
Berkeley, CA

Average rainfall days in December - Berkeley, 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).

[Resources]

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

Average daylight in December / Average sunshine in December - Berkeley, CA
  • Average daylight in December: 9h and 35min

The month with the longest days is June (Average daylight: 14h and 45min).
The month with the shortest days is December (Average daylight: 9h and 35min).

  • Average sunshine in December: 5h and 48min

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).

[Resources]

Average sunshine days in December
Berkeley, CA

Average sunshine days in December - Berkeley, 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).

[Resources]

Average UV index in December
Berkeley, CA

Average UV index in December - Berkeley, 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).

[Resources]

Average cloud cover in December
Berkeley, CA

Average cloud cover in December - Berkeley, 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).

[Resources]

Average visibility in December
Berkeley, CA

Average visibility in December - Berkeley, 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).

[Resources]

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location
* you will be automatically redirected to the weather forecast for your location