December weather forecast and climate
Tierrasanta, CA

Weather in December

The first month of the winter, December, is still a comfortable month in Tierrasanta, California, with average temperature ranging between max 63.5°F (17.5°C) and min 51.3°F (10.7°C).

Temperature

December is the coldest month, with an average high-temperature of 63.5°F (17.5°C) and an average low-temperature of 51.3°F (10.7°C).

Humidity

The average relative humidity in Tierrasanta is 61%.

Rainfall

In Tierrasanta, in December, during 5.7 rainfall days, 1.3" (33mm) of precipitation is typically accumulated. In Tierrasanta, during the entire year, the rain falls for 57.9 days and collects up to 7.48" (190mm) of precipitation.

Daylight

December has the shortest days of the year in Tierrasanta, with an average of 10h of daylight.

Sunshine

The month with the least sunshine is December, with an average of 6.8h of sunshine.

UV index

January through March, November and December, with an average maximum UV index of 4, are months with the lowest UV index. A UV Index value of 3 to 5 symbolizes a moderate health risk from unsafe exposure to the UV radiation for the average person.
Note: The average daily UV index of 4 transform into the following instructions:
Take precautions - Protection against the skin and eye damage is obliged. 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.
[Resources]

FAQ

What is the coldest month in Tierrasanta?

December is the coldest month, with an average high-temperature of 63.5°F (17.5°C) and an average low-temperature of 51.3°F (10.7°C).

What is the temperature in December in Tierrasanta?

In Tierrasanta, California, in December, the average high-temperature is 63.5°F (17.5°C), and the average low-temperature is 51.3°F (10.7°C).

What is the average humidity in December in Tierrasanta?

The average relative humidity in December in Tierrasanta is 61%.

How much does it rain in Tierrasanta in December?

In Tierrasanta, during December, the rain falls for 5.7 days and regularly aggregates up to 1.3" (33mm) of precipitation.

What is the month with the shortest days in Tierrasanta?

With an average of 10h of daylight, December has the shortest days of the year.

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

In Tierrasanta, the average length of the day in December is 10h.

What is the month with the least sunshine in Tierrasanta?

December has the least sunshine of the year in Tierrasanta, with an average of 6.8h of sunshine.

How many hours of sunshine does Tierrasanta have in December?

In December, the average sunshine is 6.8h.

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

Months with the lowest UV index in Tierrasanta, California, are January through March, November and December, with an average maximum UV index of 4.

What is the UV index intensity in December in Tierrasanta?

The average daily maximum UV index in December in Tierrasanta, California, is 4. A UV Index estimate of 3 to 5 represents a medium health risk from the exposure to the Sun's UV radiation.

Average temperature in December
Tierrasanta, CA

Average temperature in December - Tierrasanta, CA
  • Average high temperature in December: 63.5°F

The warmest month (with the highest average high temperature) is August (79.3°F).
The month with the lowest average high temperature is December (63.5°F).

  • Average low temperature in December: 51.3°F

The month with the highest average low temperature is August (65.8°F).
The coldest month (with the lowest average low temperature) is February (50.2°F).

[Resources]

Average pressure in December
Tierrasanta, CA

Average pressure in December - Tierrasanta, CA
  • Average pressure in December: 30.06"

The month with the highest atmospheric pressure is January (30.09").
Months with the lowest atmospheric pressure are June and September (29.88").

[Resources]

Average wind speed in December
Tierrasanta, CA

Average wind speed in December - Tierrasanta, CA
  • Average wind speed in December: 5.2mph

The windiest month (with the highest average wind speed) is April (6mph).
The calmest month (with the lowest average wind speed) is October (4.8mph).

[Resources]

Average humidity in December
Tierrasanta, CA

Average humidity in December - Tierrasanta, CA
  • Average humidity in December: 61%

Months with the highest relative humidity are May and June (71%).
The month with the lowest relative humidity is November (57%).

[Resources]

Average rainfall in December
Tierrasanta, CA

Average rainfall in December - Tierrasanta, CA
  • Average rainfall in December: 1.3"

The wettest month (with the highest rainfall) is February (1.46").
The driest month (with the least rainfall) is June (0.12").

[Resources]

Average rainfall days in December
Tierrasanta, CA

Average rainfall days in December - Tierrasanta, CA
  • Average rainfall days in December: 5.7 days

The month with the highest number of rainy days is March (7.1 days).
The month with the least rainy days is June (2.2 days).

[Resources]

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

Average daylight in December / Average sunshine in December - Tierrasanta, CA
  • Average daylight in December: 10h

The month with the longest days is June (Average daylight: 14.3h).
The month with the shortest days is December (Average daylight: 10h).

  • Average sunshine in December: 6.8h

The month with the most sunshine is July (Average sunshine: 12h).
The month with the least sunshine is December (Average sunshine: 6.8h).

[Resources]

Average sunshine days in December
Tierrasanta, CA

Average sunshine days in December - Tierrasanta, CA
  • Average sunshine days in December: 22.8 days

The month with the most sunshine days is January (24.8 days).
The month with the least sunshine days is February (20.2 days).

[Resources]

Average UV index in December
Tierrasanta, CA

Average UV index in December - Tierrasanta, CA
  • Average UV index in December: 4

Months with the highest UV index are July, August and September (UV index 6).
Months with the lowest UV index are January, February, March, November and December (UV index 4).

[Resources]

Average cloud cover in December
Tierrasanta, CA

Average cloud cover in December - Tierrasanta, CA
  • Average cloud cover in December: 23

Months with the most cloud cover are March and December (Cloud cover 23).
The month with the least cloud cover is August (Cloud cover 8).

[Resources]

Average visibility in December
Tierrasanta, CA

Average visibility in December - Tierrasanta, 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).

[Resources]