December weather forecast
Anaheim, CA

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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 reaches its lowest average temperatures in December, measuring 64°F (17.8°C) at the peak and 50.9°F (10.5°C) at the lowest.

Humidity

In December, the average relative humidity is 55%.

Rainfall

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.

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

The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 4. A UV Index reading of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for ordinary individuals.
Note: In December, a daily UV index of 4 turns into the following recommendations:
Put precautions into practice - Ensuring skin and eye safety is a necessity. Minimize direct exposure to the Sun during midday when its radiation is at its peak. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days.

Frequently asked questions

What is the coldest month?

Anaheim, California, notes the coldest temperatures in December, with a average high of 64°F (17.8°C) and a low of 50.9°F (10.5°C).

What is the average December temperature?

The average high-temperature, in December, in Anaheim, is 64°F (17.8°C), while the average low-temperature is 50.9°F (10.5°C). The average heat index (a.k.a. 'feels like', 'felt air temperature'), which calculates the temperature value influenced by the moisture in the air, in September is appraised at 84.2°F (29°C).

What is the average humidity in December?

The average relative humidity in December is 55%.

What is the rainiest 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?

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

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

The average day length in December is 9h and 57min.

What time are sunrise and sunset in December?

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.

What is the month with the least sunshine in Anaheim?

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

How long on average sun shines in December?

In December, the average sunshine duration is 6.7h.

What is the month with the lowest UV index?

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

What is the UV index reading in December?

The average daily maximum UV index in December is 4. A UV Index estimate 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
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

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