December weather forecast and climate
Mount Baldy, CA

Weather in December

December, the first month of the winter, in Mount Baldy, is also a moderate month, with average temperature ranging between max 58.1°F (14.5°C) and min 42.6°F (5.9°C).

Temperature

The coldest month is December, with an average high-temperature of 58.1°F (14.5°C) and an average low-temperature of 42.6°F (5.9°C).

Humidity

In December, the average relative humidity is 52%.

Rainfall

In December, the rain falls for 4.1 days. Throughout December, 0.59" (15mm) of precipitation is accumulated. Throughout the year, there are 28.4 rainfall days, and 3.86" (98mm) of precipitation is accumulated.

Snowfall

Months with snowfall in Mount Baldy are January through May, November and December. In December, it is snowing for 0.7 days. Throughout December, 2.2" (56mm) of snow is accumulated. In Mount Baldy, during the entire year, snow falls for 6.9 days, and aggregates up to 10.2" (259mm) of snow.

Daylight

December has the shortest days of the year in Mount Baldy, with an average of 9.9h of daylight.

Sunshine

Months with the least sunshine in Mount Baldy are January, February and December, with an average of 7h of sunshine.

UV index

Months with the lowest UV index are November and December, with an average maximum UV index of 3. A UV Index of 3 to 5 symbolizes a medium vulnerability from unsafe exposure to the UV radiation for the average person.
Note: In December, the average maximum UV index of 3 translate into the following recommendations:
Take precautions. Light skin individuals may get burned in less than 30 minutes. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
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FAQ

What is the coldest month in Mount Baldy?

The coldest month in Mount Baldy, California, is December, with an average high-temperature of 58.1°F (14.5°C) and an average low-temperature of 42.6°F (5.9°C).

What is the temperature in December in Mount Baldy?

In Mount Baldy, California, in December, the average high-temperature is 58.1°F (14.5°C), and the average low-temperature is 42.6°F (5.9°C).

What is the average humidity in December in Mount Baldy?

In December, the average relative humidity is 52%.

How much does it rain in Mount Baldy in December?

In Mount Baldy, during December, the rain falls for 4.1 days and regularly aggregates up to 0.59" (15mm) of precipitation.

How many days does it snow in December in Mount Baldy?

In Mount Baldy, California, in December, snow falls for 0.7 days, with typically accumulated 2.2" (56mm) of snow.

What is the month with the shortest days in Mount Baldy?

With an average of 9.9h of daylight, December has the shortest days of the year in Mount Baldy, California.

How many hours of daylight does Mount Baldy have in December?

In December, the average length of the day in Mount Baldy is 9.9h.

What is the month with the least sunshine in Mount Baldy?

Months with the least sunshine in Mount Baldy are January, February and December, with an average of 7h of sunshine.

How many hours of sunshine does Mount Baldy have in December?

In Mount Baldy, California, the average sunshine in December is 7h.

What are the months with the lowest UV index in Mount Baldy?

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

How high is the UV index in December in Mount Baldy?

In December, the average daily maximum UV index in Mount Baldy is 3. A UV Index of 3 to 5 symbolizes a medium hazard to health from the exposure to the Sun's UV radiation.

Average temperature in December
Mount Baldy, CA

Average temperature in December - Mount Baldy, CA
  • Average high temperature in December: 58.1°F

The warmest month (with the highest average high temperature) is August (88.7°F).
The month with the lowest average high temperature is December (58.1°F).

  • Average low temperature in December: 42.6°F

The month with the highest average low temperature is August (65.8°F).
The coldest month (with the lowest average low temperature) is December (42.6°F).

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Average pressure in December
Mount Baldy, CA

Average pressure in December - Mount Baldy, CA
  • Average pressure in December: 30.07"

The month with the highest atmospheric pressure is January (30.11").
The month with the lowest atmospheric pressure is June (29.86").

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Average wind speed in December
Mount Baldy, CA

Average wind speed in December - Mount Baldy, CA
  • Average wind speed in December: 5.5mph

The windiest months (with the highest average wind speed) are April and May (6.2mph).
The calmest month (with the lowest average wind speed) is September (4.6mph).

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Average humidity in December
Mount Baldy, CA

Average humidity in December - Mount Baldy, CA
  • Average humidity in December: 52%

The month with the highest relative humidity is March (54%).
The month with the lowest relative humidity is August (40%).

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Average rainfall in December
Mount Baldy, CA

Average rainfall in December - Mount Baldy, CA
  • Average rainfall in December: 0.59"

The wettest month (with the highest rainfall) is February (0.94").
The driest months (with the least rainfall) are July and August (0").

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Average rainfall days in December
Mount Baldy, CA

Average rainfall days in December - Mount Baldy, CA
  • Average rainfall days in December: 4.1 days

The month with the highest number of rainy days is March (5 days).
The month with the least rainy days is June (0.6 days).

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Average snowfall in December
Mount Baldy, CA

Average snowfall in December - Mount Baldy, CA
  • Average snowfall in December: 2.2"

The month with the highest snowfall is February (2.91").
Months with the least snowfall are June, July, August, September and October (0").

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Average snowfall days in December
Mount Baldy, CA

Average snowfall days in December - Mount Baldy, CA
  • Average snowfall days in December: 0.7 days

The month with the highest number of snowfall days is March (2.2 days).
Months with the least snowfall days are June, July, August, September and October (0 days).

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Average daylight in December /
Average sunshine in December
Mount Baldy, CA

Average daylight in December / Average sunshine in December - Mount Baldy, CA
  • Average daylight in December: 9.9h

The month with the longest days is June (Average daylight: 14.4h).
The month with the shortest days is December (Average daylight: 9.9h).

  • Average sunshine in December: 7h

The month with the most sunshine is July (Average sunshine: 12.2h).
Months with the least sunshine are January, February and December (Average sunshine: 7).

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Average sunshine days in December
Mount Baldy, CA

Average sunshine days in December - Mount Baldy, CA
  • Average sunshine days in December: 26.1 days

The month with the most sunshine days is August (30.3 days).
The month with the least sunshine days is February (23.3 days).

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Average UV index in December
Mount Baldy, CA

Average UV index in December - Mount Baldy, CA
  • Average UV index in December: 3

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

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Average cloud cover in December
Mount Baldy, CA

Average cloud cover in December - Mount Baldy, CA
  • Average cloud cover in December: 21

Months with the most cloud cover are March and December (Cloud cover 21).
The month with the least cloud cover is August (Cloud cover 4).

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Average visibility in December
Mount Baldy, CA

Average visibility in December - Mount Baldy, 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).

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