December weather forecast
Mountain View Acres, CA

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Weather in December

December, the first month of the winter in Mountain View Acres, is still a cool month, with an average temperature ranging between max 54.1°F (12.3°C) and min 38.5°F (3.6°C).

Temperature

Mountain View Acres's December weather, marked by an average high temperature of 54.1°F (12.3°C) and an average low temperature of 38.5°F (3.6°C), is the coldest in the year.

Humidity

December is the most humid month, with an average relative humidity of 52%.

Rainfall

The month with the most rainfall is December, when the rain falls for 6.2 days and typically aggregates up to 1.18" (30mm) of precipitation.

Snowfall

January through April, November and December are months with snowfall. In Mountain View Acres, in December, snow falls for 0.5 days, with typically accumulated 1.38" (35mm) of snow. In Mountain View Acres, during the entire year, snow falls for 3.1 days and aggregates up to 5.28" (134mm) of snow.

Daylight

December has the shortest days of the year, with an average of 9h and 54min of daylight.
On the first day of the month, sunrise is at 6:38 am and sunset at 4:39 pm. On the last day of December, sunrise is at 6:55 am and sunset at 4:49 pm PST.

Sunshine

With an average of 7h of sunshine, December has the least sunshine of the year.

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 value of 3 to 5 symbolizes a medium health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: The average daily UV index of 3 in December transforms into the following instructions:
Ensure safety - Recommendations to avert sunburn are presented. Considering the strength of solar radiation at midday, one should avoid direct Sun exposure. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays. Observe! Snow reflection can nearly intensify the Sun's UV radiation twofold.
Updated: Jul 20, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are the coldest months?

December, recording an average high temperature of 54.1°F (12.3°C) and a low temperature of 38.5°F (3.6°C), is Mountain View Acres's coldest month.

What is the usual temperature for Mountain View Acres in December?

Mountain View Acres in December has an average high-temperature of 54.1°F (12.3°C) and an average low-temperature of 38.5°F (3.6°C).

What is the most humid month?

The most humid month is December, with an average relative humidity of 52%.

What is the average humidity in December?

In December, the average relative humidity is 52%.

What is the wettest month?

The month with the most rainfall is December, when the rain falls for 6.2 days and typically aggregates up to 1.18" (30mm) of precipitation.

How much does it rain in Mountain View Acres in December?

In Mountain View Acres, in December, during 6.2 rainfall days, 1.18" (30mm) of precipitation is typically accumulated.

How many days does it snow in December?

In Mountain View Acres, in December, during 0.5 snowfall days, 1.38" (35mm) of snow is typically 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 Mountain View Acres have in December?

In Mountain View Acres, the average day length in December is 9h and 53min.

What time are sunrise and sunset in December?

On the first day of December, sunrise is at 6:38 am and sunset at 4:39 pm. On the last day of the month, sunrise is at 6:55 am and sunset at 4:49 pm PST.

What is the month with the least sunshine?

December has the least sunshine of the year, with an average of 7h of sunshine.

How long on average sun shines in December in Mountain View Acres?

In Mountain View Acres, the average sunshine duration in December is 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 3.

What is the UV index intensity 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 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
Mountain View Acres, CA

Average temperature in December - Mountain View Acres, CA
  • Average high temperature in December: 54.1°F

The warmest month (with the highest average high temperature) is July (91.4°F).
The month with the lowest average high temperature is December (54.1°F).

  • Average low temperature in December: 38.5°F

The month with the highest average low temperature is August (67.5°F).
The coldest month (with the lowest average low temperature) is December (38.5°F).

Average pressure in December
Mountain View Acres, CA

Average pressure in December - Mountain View Acres, CA
  • Average pressure in December: 30.08"Hg

The month with the highest atmospheric pressure is January (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.83"Hg).

Average wind speed in December
Mountain View Acres, CA

Average wind speed in December - Mountain View Acres, CA
  • Average wind speed in December: 6.3mph

The windiest months (with the highest average wind speed) are April and May (9.1mph).
The calmest month (with the lowest average wind speed) is January (6.2mph).

Average humidity in December
Mountain View Acres, CA

Average humidity in December - Mountain View Acres, CA
  • Average humidity in December: 52%

The month with the highest relative humidity is December (52%).
The month with the lowest relative humidity is August (30%).

Average rainfall in December
Mountain View Acres, CA

Average rainfall in December - Mountain View Acres, CA
  • Average rainfall in December: 1.18"

The wettest month (with the highest rainfall) is December (1.18").
The driest month (with the least rainfall) is June (0.04").

Average rainfall days in December
Mountain View Acres, CA

Average rainfall days in December - Mountain View Acres, CA
  • Average rainfall days in December: 6.2 days

The month with the highest number of rainy days is March (6.7 days).
The month with the least rainy days is June (0.8 days).

Average snowfall in December
Mountain View Acres, CA

Average snowfall in December - Mountain View Acres, CA
  • Average snowfall in December: 1.38"

The month with the highest snowfall is November (1.85").
The months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days in December
Mountain View Acres, CA

Average snowfall days in December - Mountain View Acres, CA
  • Average snowfall days in December: 0.5 days

The month with the highest number of snowfall days is February (1.4 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

Average daylight in December /
Average sunshine in December
Mountain View Acres, CA

Average daylight in December / Average sunshine in December - Mountain View Acres, 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 0min

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: 7h and 0min).

Average sunshine days in December
Mountain View Acres, CA

Average sunshine days in December - Mountain View Acres, CA
  • Average sunshine days in December: 23.3 days

The month with the most sunshine days is June (28.8 days).
The month with the least sunshine days is February (21.6 days).

Average UV index in December
Mountain View Acres, CA

Average UV index in December - Mountain View Acres, 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
Mountain View Acres, CA

Average cloud cover in December - Mountain View Acres, CA
  • Average cloud cover in December: 21

The month with the most cloud cover is December (Cloud cover 21).
The months with the least cloud cover are June, August and September (Cloud cover 6).

Average visibility in December
Mountain View Acres, CA

Average visibility in December - Mountain View Acres, 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).

Mountain View Acres, California, USA

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