December weather forecast and climate
Tarzana, CA

The first month of the winter, December, is still a comfortable month in Tarzana, California, with average temperature fluctuating between 46.9°F (8.3°C) and 61.9°F (16.6°C).

Temperature

December is the coldest month, with an average high-temperature of 61.9°F (16.6°C) and an average low-temperature of 46.9°F (8.3°C).

Humidity

The average relative humidity is 53%.

Rainfall

In Tarzana, in December, it is raining for 4.7 days, with typically 1.18" (30mm) of accumulated precipitation. Throughout the year, there are 42.7 rainfall days, and 6.46" (164mm) of precipitation is accumulated.

Snowfall

The only month with snowfall is December. The month with the most snowfall days in Tarzana is December when snow falls for 0.1 days.

Daylight

The month with the shortest days in Tarzana, California, is December, with an average of 9.9h of daylight.

Sunshine

January, February and December, with an average of 6.8h of sunshine, are months with the least sunshine in Tarzana.

UV index

December is the month with the lowest UV index in Tarzana, with an average maximum UV index of 3. A UV Index estimate of 3 to 5 represents a moderate threat to health from the exposure to the Sun's UV radiation for average individuals.
Note: The daily maximum UV index of 3 interpret into the following advice:
Take precautions - Protection against sunburn is recommended. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. 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. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.

What is the coldest month in Tarzana?

December is the coldest month, with an average high-temperature of 61.9°F (16.6°C) and an average low-temperature of 46.9°F (8.3°C).

What is the temperature in December in Tarzana?

The average high-temperature, in December, in Tarzana, is 61.9°F (16.6°C), while the average low-temperature is 46.9°F (8.3°C).

What is the average humidity in December in Tarzana?

The average relative humidity in December in Tarzana, California, is 53%.

How much does it rain in Tarzana in December?

In Tarzana, in December, during 4.7 rainfall days, 1.18" (30mm) of precipitation is typically accumulated.

When does it start to snow in Tarzana?

December is the first month it typically snows in Tarzana, California. Throughout December, there are 0.1 snowfall days.

When does it snow the most in Tarzana?

The month with the most snowfall days in Tarzana is December when snow falls for 0.1 days.

What is the month with the shortest days in Tarzana?

December has the shortest days of the year in Tarzana, California, with an average of 9.9h of daylight.

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

In December, the average length of the day in Tarzana, California, is 9.9h.

What is the month with the least sunshine in Tarzana?

January, February and December, with an average of 6.8h of sunshine, are months with the least sunshine.

How long on average sun shines in December in Tarzana?

The average sunshine in December in Tarzana, California, is 6.8h.

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

The month with the lowest UV index is December, with an average maximum UV index of 3.

What is the UV index intensity in December in Tarzana?

In Tarzana, the average daily maximum UV index in December is 3. A UV Index estimate of 3 to 5 represents a medium hazard to health from the exposure to the Sun's UV radiation.
Average temperature in December - Tarzana, CA
  • Average high temperature in December: 61.9°F

The warmest month (with the highest average high temperature) is August (85.6°F).
The month with the lowest average high temperature is December (61.9°F).

  • Average low temperature in December: 46.9°F

The month with the highest average low temperature is August (64.8°F).
The coldest month (with the lowest average low temperature) is December (46.9°F).

Average pressure in December - Tarzana, CA
  • Average pressure in December: 30.08"

The month with the highest atmospheric pressure is January (30.11").
The month with the lowest atmospheric pressure is June (29.89").

Average wind speed in December - Tarzana, CA
  • Average wind speed in December: 6.1mph

The windiest months (with the highest average wind speed) are January and December (6.1mph).
The calmest month (with the lowest average wind speed) is September (4.5mph).

Average humidity in December - Tarzana, CA
  • Average humidity in December: 53%

The month with the highest relative humidity is June (59%).
The month with the lowest relative humidity is November (47%).

Average rainfall in December - Tarzana, CA
  • Average rainfall in December: 1.18"

The wettest month (with the highest rainfall) is February (1.22").
The driest month (with the least rainfall) is June (0.04").

Average rainfall days in December - Tarzana, CA
  • Average rainfall days in December: 4.7 days

The month with the highest number of rainy days is March (6.5 days).
The month with the least rainy days is June (1.4 days).

Average snowfall days in December - Tarzana, CA
  • Average snowfall days in December: 0.1 days

The month with the highest number of snowfall days is December (0.1 days).
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 - Tarzana, CA
  • Average daylight in December: 9.9h

The month with the longest days is June (Average daylight: 14.4h).
The month with the shortest days is December (Average daylight: 9.9h).

  • Average sunshine in December: 6.8h

Months with the most sunshine are June and July (Average sunshine: 12.1h).
Months with the least sunshine are January, February and December (Average sunshine: 6.8).

Average sunshine days in December - Tarzana, CA
  • Average sunshine days in December: 24.7 days

Months with the most sunshine days are August and October (27.3 days).
The month with the least sunshine days is February (22 days).

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

Months with the highest UV index are June, July, August and September (UV index 6).
The month with the lowest UV index is December (UV index 3).

Average cloud cover in December - Tarzana, CA
  • Average cloud cover in December: 21

The month with the most cloud cover is March (Cloud cover 22).
The month with the least cloud cover is August (Cloud cover 4).

Average visibility in December - Tarzana, 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).