December weather forecast
Anaheim, CA

Share
Beautiful residential area in Anaheim, California with a tall flat building in a distance
Beautiful residential area in Anaheim, California with a tall flat building in a distance

Weather in December

December rounds out the year in Anaheim with cooler, more winter-like weather conditions. Comparatively, temperatures fall more from a range of 56.3°F (13.5°C) to 71.4°F (21.9°C) in November to 50.9°F (10.5°C) to 64°F (17.8°C). Despite this, the UV index remains constant, as do visibility and wind speed conditions. It is one of the months with the highest rainfall of 1.54" (39mm), concluding the year with a characteristic winter feel.

Temperature

Anaheim's December weather, marked by an average high temperature of 64°F (17.8°C) and an average low temperature of 50.9°F (10.5°C), is the coldest in the year.

Humidity

In December, the average relative humidity is 55%.

Rainfall

December is the month with the most rainfall. Rain falls for 6.6 days and accumulates 1.54" (39mm) of precipitation.

Daylight

The month with the shortest days is December, with an average of 9h and 54min of daylight.
On the first day of December, sunrise is at 6:39 am and sunset at 4:42 pm. On the last day of the month, sunrise is at 6:56 am and sunset at 4:53 pm PST.

Sunshine

December has the least sunshine of the year, with an average of 6.7h of sunshine.

UV index

January, February, 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 medium vulnerability from unsafe exposure to UV radiation for the average person.
Note: In December, the maximum UV index of 4 translates into these guidelines:
Exercise prevention - Precautions against solar damage are endorsed. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. Tightly woven clothing, when worn loosely, shields effectively against the Sun.

Frequently asked questions

What time of the year is the coldest?

Anaheim's December weather, with an average high temperature of 64°F (17.8°C) and an average low temperature of 50.9°F (10.5°C), tends to be the coldest of the year.

What are the temperatures in December?

In December, in Anaheim, the average high-temperature is 64°F (17.8°C), and the average low-temperature is 50.9°F (10.5°C). In September, the average heat index (a.k.a. 'real feel', 'felt air temperature'), which combines air temperature and relative humidity, is calculated to be 84.2°F (29°C).

What is the average humidity in December?

In December, the average relative humidity is 55%.

What is the wettest month?

The month with the most rainfall is December, when the rain falls for 6.6 days and typically aggregates up to 1.54" (39mm) of precipitation.

How many days does it rain in December?

In December, the rain falls for 6.6 days. Throughout December, 1.54" (39mm) of precipitation is accumulated.

What is the month with the shortest days?

With an average of 9h and 54min of daylight, December has the shortest days of the year.

How many hours of daylight does Anaheim have in December?

In December, the average day length is 9h and 57min.

What time are sunrise and sunset in December?

On the first day of December in Anaheim, sunrise is at 6:39 am and sunset at 4:42 pm. On the last day of the month, sunrise is at 6:56 am and sunset at 4:53 pm PST.

What is the month with the least sunshine?

The month with the least sunshine is December, with an average of 6.7h of sunshine.

How many hours of sunshine does Anaheim have in December?

In December, the average sunshine duration is 6.7h.

What are the months with the lowest UV index?

The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 4.

How high is the UV index in December?

In Anaheim, the average daily maximum UV index in December is 4. A UV Index value of 3 to 5 symbolizes a moderate health threat from exposure to the Sun's 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
Anaheim, CA

Average temperature in December - Anaheim, CA
  • Average high temperature in December: 64°F

The warmest month (with the highest average high temperature) is August (83.5°F).
The month with the lowest average high temperature is December (64°F).

  • Average low temperature in December: 50.9°F

The month with the highest average low temperature is August (65.5°F).
The coldest month (with the lowest average low temperature) is February (50.2°F).

Average pressure in December
Anaheim, CA

Average pressure in December - Anaheim, CA
  • Average pressure in December: 30.07"Hg

The month with the highest atmospheric pressure is January (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).

Average wind speed in December
Anaheim, CA

Average wind speed in December - Anaheim, CA
  • Average wind speed in December: 5.1mph

The windiest month (with the highest average wind speed) is April (6mph).
The calmest months (with the lowest average wind speed) are September and October (4.7mph).

Average humidity in December
Anaheim, CA

Average humidity in December - Anaheim, CA
  • Average humidity in December: 55%

The month with the highest relative humidity is June (65%).
The month with the lowest relative humidity is November (51%).

Average rainfall in December
Anaheim, CA

Average rainfall in December - Anaheim, CA
  • Average rainfall in December: 1.54"

The wettest month (with the highest rainfall) is December (1.54").
The driest month (with the least rainfall) is June (0.04").

Average rainfall days in December
Anaheim, CA

Average rainfall days in December - Anaheim, CA
  • Average rainfall days in December: 6.6 days

The month with the highest number of rainy days is March (7.3 days).
The month with the least rainy days is June (1.5 days).

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

Average daylight in December / Average sunshine in December - Anaheim, CA
  • Average daylight in December: 9h and 5min

The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 9h and 54min).

  • Average sunshine in December: 6h and 4min

The months with the most sunshine are July and August (Average sunshine: 12h and 0min).
The month with the least sunshine is December (Average sunshine: 6h and 42min).

Average sunshine days in December
Anaheim, CA

Average sunshine days in December - Anaheim, CA
  • Average sunshine days in December: 23.2 days

The month with the most sunshine days is August (25.8 days).
The month with the least sunshine days is February (20.6 days).

Average UV index in December
Anaheim, CA

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

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

Average cloud cover in December
Anaheim, CA

Average cloud cover in December - Anaheim, CA
  • Average cloud cover in December: 22

The months with the most cloud cover are March and December (Cloud cover 22).
The month with the least cloud cover is August (Cloud cover 5).

Average visibility in December
Anaheim, CA

Average visibility in December - Anaheim, 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).

Anaheim, California, USA

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location