December weather forecast
Anza, CA

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Weather in December

The first month of the winter, December, is also a moderate month in Anza, California, with temperature in the range of an average high of 57°F (13.9°C) and an average low of 40.5°F (4.7°C).

Temperature

The coldest period tends to be December, when average temperatures fluctuate between a high of 57°F (13.9°C) and a low of 40.5°F (4.7°C).

Humidity

The average relative humidity in December is 53%.

Rainfall

In December, the rain falls for 5.3 days. Throughout December, 1.06" (27mm) of precipitation is accumulated. Throughout the year, there are 52.8 rainfall days, and 7.01" (178mm) of precipitation is accumulated.

Snowfall

January, April through October and December are months without snowfall.

Daylight

December has the shortest days of the year in Anza, with an average of 10h and 0min of daylight.
On the first day of December in Anza, sunrise is at 6:33 am and sunset at 4:38 pm. On the last day of the month, sunrise is at 6:50 am and sunset at 4:49 pm PST.

Sunshine

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

UV index

The months with the lowest UV index in Anza are February, November and December, with an average maximum UV index of 3. A UV Index estimate of 3 to 5 represents a medium vulnerability from unsafe exposure to UV radiation for average individuals.
Note: In December, the maximum UV index of 3 suggests these recommendations:
Adopt protective measures - Suggestions to resist sunburn are offered. Direct Sun exposure should be minimized especially during midday when radiation is most intense. Employ a hat with a wide brim for robust protection, cutting UV exposure by half. Take heed! Reflection from the snow can almost amplify the Sun's UV radiation by double.

Frequently asked questions

What are the coldest months in Anza?

Anza's December weather, marked by an average high temperature of 57°F (13.9°C) and an average low temperature of 40.5°F (4.7°C), is the coldest in the year.

What is the temperature in December in Anza?

During December, Anza experiences an average high-temperature of 57°F (13.9°C) and a low-temperature of 40.5°F (4.7°C). In September, the average heat index (a.k.a. 'real feel', 'apparent temperature'), which represents the influence of relative humidity on air temperature, is evaluated at 84.2°F (29°C).

What is the average humidity in December in Anza?

The average relative humidity in December in Anza is 53%.

How many days does it rain in December in Anza?

In Anza, during December, the rain falls for 5.3 days and regularly aggregates up to 1.06" (27mm) of precipitation.

When it does not snow in Anza?

In Anza, snow does not fall in January, April through October and December.

Does it snow in Anza in December?

In December, in Anza, it doesn't snow. November is the latest month when it typically snows.

What is the month with the shortest days in Anza?

December has the shortest days of the year, with an average of 10h and 0min of daylight.

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

In Anza, the average day length in December is 9h and 58min.

When is the sunrise / sunset in December in Anza?

On the first day of December in Anza, sunrise is at 6:33 am and sunset at 4:38 pm. On the last day of the month, sunrise is at 6:50 am and sunset at 4:49 pm PST.

What is the month with the least sunshine in Anza?

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

How many hours of sunshine does Anza have in December?

In December, the average sunshine duration in Anza, California, is 6.8h.

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

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

How high is the UV index in December in Anza?

In December, the average daily maximum UV index in Anza is 3. A UV Index value of 3 to 5 symbolizes a medium health risk from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in December
Anza, CA

Average temperature in December - Anza, CA
  • Average high temperature in December: 57°F

The warmest month (with the highest average high temperature) is August (90°F).
The month with the lowest average high temperature is December (57°F).

  • Average low temperature in December: 40.5°F

The month with the highest average low temperature is August (65.3°F).
The coldest month (with the lowest average low temperature) is December (40.5°F).

Average pressure in December
Anza, CA

Average pressure in December - Anza, CA
  • Average pressure in December: 30.06"Hg

The month with the highest atmospheric pressure is January (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.83"Hg).

Average wind speed in December
Anza, CA

Average wind speed in December - Anza, CA
  • Average wind speed in December: 5.8mph

The windiest months (with the highest average wind speed) are April and May (6.8mph).
The calmest month (with the lowest average wind speed) is September (5.1mph).

Average humidity in December
Anza, CA

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

The month with the highest relative humidity is February (54%).
The month with the lowest relative humidity is August (37%).

Average rainfall in December
Anza, CA

Average rainfall in December - Anza, CA
  • Average rainfall in December: 1.06"

The wettest month (with the highest rainfall) is February (1.38").
The driest month (with the least rainfall) is June (0.08").

Average rainfall days in December
Anza, CA

Average rainfall days in December - Anza, CA
  • Average rainfall days in December: 5.3 days

The month with the highest number of rainy days is July (6.3 days).
The month with the least rainy days is June (1.8 days).

Average snowfall in December
Anza, CA

Average snowfall in December - Anza, CA
  • Average snowfall in December: 0"

The month with the highest snowfall is February (0.28").
The months with the least snowfall are January, April, May, June, July, August, September, October and December (0").

Average snowfall days in December
Anza, CA

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

The month with the highest number of snowfall days is February (0.3 days).
The months with the least snowfall days are January, April, May, June, July, August, September and October (0 days).

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

Average daylight in December / Average sunshine in December - Anza, CA
  • Average daylight in December: 10h and 0min

The month with the longest days is June (Average daylight: 14h and 18min).
The month with the shortest days is December (Average daylight: 10h and 0min).

  • Average sunshine in December: 6h and 5min

The months with the most sunshine are June and July (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 6h and 48min).

Average sunshine days in December
Anza, CA

Average sunshine days in December - Anza, CA
  • Average sunshine days in December: 24.8 days

The month with the most sunshine days is October (27.2 days).
The month with the least sunshine days is July (20.7 days).

Average UV index in December
Anza, CA

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

The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are February, November and December (UV index 3).

Average cloud cover in December
Anza, CA

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

The month with the most cloud cover is December (Cloud cover 23).
The months with the least cloud cover are June and August (Cloud cover 6).

Average visibility in December
Anza, CA

Average visibility in December - Anza, 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).

Anza, California, USA

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