December weather forecast
Sugarloaf, CA

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Weather in December

December, the first month of the winter in Sugarloaf, is still a cool month, with an average temperature fluctuating between 38.1°F (3.4°C) and 52.7°F (11.5°C).

Temperature

December, with average temperatures reaching a high of 52.7°F (11.5°C) and a low of 38.1°F (3.4°C), is the coldest month.

Humidity

The most humid month is December, with an average relative humidity of 50%.

Rainfall

The month with the most rainfall is December, when the rain falls for 5.5 days and typically aggregates up to 1.34" (34mm) of precipitation.

Snowfall

Months with snowfall in Sugarloaf are January through May, November and December. December is the month with the most snowfall. Snow falls for 2.4 days and accumulates 5.12" (130mm) of snow.

Daylight

With an average of 9h and 54min of daylight, December has the shortest days of the year.
On the first day of the month, sunrise is at 6:35 am and sunset at 4:37 pm. On the last day of December, sunrise is at 6:53 am and sunset at 4:48 pm PST.

Sunshine

January and December, with an average of 7.1h of sunshine, are months with the least sunshine.

UV index

January, February, November and December, with an average maximum UV index of 3, are months with the lowest UV index. 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, the maximum UV index of 3 translates into these guidelines:
Proceed with care. Light skin individuals may be exposed to burns in fewer than 30 minutes. Avoiding the Sun's peak radiation during midday hours is essential for health and safety. A wide-brimmed hat is a staple for defending the face, eyes, ears, and neck from the Sun. Note this! The Sun's UV radiation can nearly be doubled by the reflection off snow.

Frequently asked questions

What is the coldest month in Sugarloaf?

Sugarloaf, California, reaches its average lowest temperatures in December, measuring 52.7°F (11.5°C) at the peak and 38.1°F (3.4°C) at the lowest.

What are the temperatures in December?

The average high-temperature, in December, in Sugarloaf, is 52.7°F (11.5°C), while the average low-temperature is 38.1°F (3.4°C).

What is the most humid month?

With an average relative humidity of 50%, December is the most humid month.

What is the average humidity in December?

In Sugarloaf, the average relative humidity in December is 50%.

What is the rainiest month?

December is the month with the most rainfall. Rain falls for 5.5 days and accumulates 1.34" (34mm) of precipitation.

How much does it rain in December?

In December, the rain falls for 5.5 days. Throughout December, 1.34" (34mm) of precipitation is accumulated.

What is the snowiest month?

December is the month with the most snowfall. Snow falls for 2.4 days and accumulates 5.12" (130mm) of snow.

How much does it snow in December?

In December, it is snowing for 2.4 days. Throughout December, 5.12" (130mm) of snow 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.

How many hours of daylight does Sugarloaf have in December?

The average day length in December is 9h and 55min.

When are sunrise and sunset in December?

On the first day of December, sunrise is at 6:35 am and sunset at 4:37 pm. On the last day of the month, sunrise is at 6:53 am and sunset at 4:48 pm PST.

What is the month with the least sunshine?

The months with the least sunshine are January and December, with an average of 7.1h of sunshine.

How many hours of sunshine does Sugarloaf have in December?

In Sugarloaf, the average sunshine duration in December is 7.1h.

What is the month 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 3.

How high is the UV index in December?

The average daily maximum UV index in December is 3. A UV Index reading of 3 to 5 represents a moderate vulnerability from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in December
Sugarloaf, CA

Average temperature in December - Sugarloaf, CA
  • Average high temperature in December: 52.7°F

The warmest month (with the highest average high temperature) is July (90.7°F).
The month with the lowest average high temperature is December (52.7°F).

  • Average low temperature in December: 38.1°F

The month with the highest average low temperature is August (68.9°F).
The coldest month (with the lowest average low temperature) is December (38.1°F).

Average pressure in December
Sugarloaf, CA

Average pressure in December - Sugarloaf, 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 (29.81"Hg).

Average wind speed in December
Sugarloaf, CA

Average wind speed in December - Sugarloaf, CA
  • Average wind speed in December: 6mph

The windiest month (with the highest average wind speed) is April (8.5mph).
The calmest months (with the lowest average wind speed) are August and September (5.7mph).

Average humidity in December
Sugarloaf, CA

Average humidity in December - Sugarloaf, CA
  • Average humidity in December: 50%

The month with the highest relative humidity is December (50%).
The month with the lowest relative humidity is August (26%).

Average rainfall in December
Sugarloaf, CA

Average rainfall in December - Sugarloaf, CA
  • Average rainfall in December: 1.34"

The wettest month (with the highest rainfall) is December (1.34").
The driest month (with the least rainfall) is June (0.08").

Average rainfall days in December
Sugarloaf, CA

Average rainfall days in December - Sugarloaf, CA
  • Average rainfall days in December: 5.5 days

The month with the highest number of rainy days is December (5.5 days).
The month with the least rainy days is June (1.2 days).

Average snowfall in December
Sugarloaf, CA

Average snowfall in December - Sugarloaf, CA
  • Average snowfall in December: 5.12"

The month with the highest snowfall is December (5.12").
The months with the least snowfall are June, July, August, September and October (0").

Average snowfall days in December
Sugarloaf, CA

Average snowfall days in December - Sugarloaf, CA
  • Average snowfall days in December: 2.4 days

The month with the highest number of snowfall days is February (3.6 days).
The months with the least snowfall days are June, July, August, September and October (0 days).

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

Average daylight in December / Average sunshine in December - Sugarloaf, 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: 7h and 1min

The months with the most sunshine are June and July (Average sunshine: 12h and 6min).
The months with the least sunshine are January and December (Average sunshine: 7h and 6min).

Average sunshine days in December
Sugarloaf, CA

Average sunshine days in December - Sugarloaf, CA
  • Average sunshine days in December: 23.7 days

The month with the most sunshine days is June (28.4 days).
The month with the least sunshine days is February (21.9 days).

Average UV index in December
Sugarloaf, CA

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

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

Average cloud cover in December
Sugarloaf, CA

Average cloud cover in December - Sugarloaf, CA
  • Average cloud cover in December: 19

The month with the most cloud cover is December (Cloud cover 19).
The month with the least cloud cover is June (Cloud cover 5).

Average visibility in December
Sugarloaf, CA

Average visibility in December - Sugarloaf, 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).

Sugarloaf, California, USA

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