December weather forecast
Montgomery Creek, CA

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Weather in December

The first month of the winter, December, is also a frosty month in Montgomery Creek, California, with an average temperature ranging between min 27.9°F (-2.3°C) and max 43.3°F (6.3°C).

Temperature

December is the coldest month, with the temperature often reaching an average high of 43.3°F (6.3°C) and an average low of 27.9°F (-2.3°C).

Humidity

In Montgomery Creek, the average relative humidity in December is 76%.

Rainfall

In Montgomery Creek, California, during December, the rain falls for 12.5 days and regularly aggregates up to 4.21" (107mm) of precipitation. In Montgomery Creek, during the entire year, the rain falls for 105 days and collects up to 24.69" (627mm) of precipitation.

Snowfall

Months with snowfall in Montgomery Creek are January through May, October through December. In Montgomery Creek, during December, snow falls for 7.5 days and regularly aggregates up to 8.11" (206mm) of snow. Throughout the year, in Montgomery Creek, there are 36.7 snowfall days, and 43.62" (1108mm) of snow is accumulated.

Daylight

The month with the shortest days is December, with an average of 9h and 18min of daylight.
On the first day of December in Montgomery Creek, sunrise is at 7:13 am and sunset at 4:40 pm. On the last day of the month, sunrise is at 7:31 am and sunset at 4:50 pm PST.

Sunshine

With an average of 5.7h of sunshine, December has the least sunshine of the year.

UV index

January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Montgomery Creek. A UV Index estimate of 2, and below, represents a minimal health hazard from unsafe exposure to UV radiation for the average person.
Note: A typical high UV index of 2 in December suggests the following recommendations:
It is important to always shield children, babies, and individuals with sensitive skin from prolonged exposure to the sun. Exposing oneself to the midday Sun can be harmful due to the strong UV radiation; limit your time outside. Experience reduced UV exposure by about half when donning a wide-brim hat. Notice! The UV radiation of the Sun can be intensified nearly twofold due to the reflective quality of snow.
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Frequently asked questions

What are the coldest months in Montgomery Creek?

The coldest month in Montgomery Creek is December, with an average high-temperature of 43.3°F (6.3°C) and an average low-temperature of 27.9°F (-2.3°C).

How cold is it in Montgomery Creek in December?

The average high-temperature, in December, in Montgomery Creek, is 43.3°F (6.3°C), while the average low-temperature is 27.9°F (-2.3°C). In August, the average heat index (a.k.a. 'feels like', 'apparent temperature'), which takes the relative humidity and factors it into the air temperature reading, is evaluated at 86°F (30°C).

What is the average humidity in December in Montgomery Creek?

In Montgomery Creek, California, the average relative humidity in December is 76%.

How many days does it rain in December in Montgomery Creek?

In Montgomery Creek, in December, during 12.5 rainfall days, 4.21" (107mm) of precipitation is typically accumulated.

How many days does it snow in December in Montgomery Creek?

In Montgomery Creek, in December, snow falls for 7.5 days, with typically accumulated 8.11" (206mm) of snow.

What is the month with the shortest days in Montgomery Creek?

The month with the shortest days in Montgomery Creek is December, with an average of 9h and 18min of daylight.

What is the average length of the day in December in Montgomery Creek?

In December, the average day length is 9h and 18min.

When are sunrise and sunset in December in Montgomery Creek?

In December, on the first day of the month, sunrise is at 7:13 am and sunset at 4:40 pm. On the last day of the month, in Montgomery Creek, sunrise is at 7:31 am and sunset at 4:50 pm PST.

What is the month with the least sunshine in Montgomery Creek?

With an average of 5.7h of sunshine, December has the least sunshine of the year in Montgomery Creek.

How long on average sun shines in December in Montgomery Creek?

In December, the average sunshine duration is 5.7h.

When is the lowest UV index in Montgomery Creek?

January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Montgomery Creek, California.

What is the UV index intensity in December in Montgomery Creek?

In December, the average daily maximum UV index in Montgomery Creek, California, is 2. A UV Index estimate of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV radiation.
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
Montgomery Creek, CA

Average temperature in December - Montgomery Creek, CA
  • Average high temperature in December: 43.3°F

The warmest month (with the highest average high temperature) is July (86.7°F).
The month with the lowest average high temperature is December (43.3°F).

  • Average low temperature in December: 27.9°F

The month with the highest average low temperature is July (53.1°F).
The coldest month (with the lowest average low temperature) is December (27.9°F).

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Average pressure in December
Montgomery Creek, CA

Average pressure in December - Montgomery Creek, CA
  • Average pressure in December: 30.16"Hg

The month with the highest atmospheric pressure is January (30.18"Hg).
The months with the lowest atmospheric pressure are June and August (29.92"Hg).

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Average wind speed in December
Montgomery Creek, CA

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

The windiest month (with the highest average wind speed) is March (5.8mph).
The calmest month (with the lowest average wind speed) is August (4.5mph).

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Average humidity in December
Montgomery Creek, CA

Average humidity in December - Montgomery Creek, CA
  • Average humidity in December: 76%

The months with the highest relative humidity are January and March (79%).
The months with the lowest relative humidity are July and August (40%).

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Average rainfall in December
Montgomery Creek, CA

Average rainfall in December - Montgomery Creek, CA
  • Average rainfall in December: 4.21"

The wettest month (with the highest rainfall) is March (4.45").
The driest month (with the least rainfall) is July (0.16").

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Average rainfall days in December
Montgomery Creek, CA

Average rainfall days in December - Montgomery Creek, CA
  • Average rainfall days in December: 12.5 days

The month with the highest number of rainy days is April (14.5 days).
The month with the least rainy days is August (2.3 days).

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Average snowfall in December
Montgomery Creek, CA

Average snowfall in December - Montgomery Creek, CA
  • Average snowfall in December: 8.11"

The month with the highest snowfall is March (10.43").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in December
Montgomery Creek, CA

Average snowfall days in December - Montgomery Creek, CA
  • Average snowfall days in December: 7.5 days

The month with the highest number of snowfall days is March (8 days).
The months with the least snowfall days are June, July and August (0 days).

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Average daylight in December /
Average sunshine in December
Montgomery Creek, CA

Average daylight in December / Average sunshine in December - Montgomery Creek, CA
  • Average daylight in December: 9h and 2min

The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).

  • Average sunshine in December: 5h and 4min

The month with the most sunshine is July (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 5h and 42min).

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Average sunshine days in December
Montgomery Creek, CA

Average sunshine days in December - Montgomery Creek, CA
  • Average sunshine days in December: 14.7 days

The month with the most sunshine days is August (26 days).
The month with the least sunshine days is March (11.3 days).

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Average UV index in December
Montgomery Creek, CA

Average UV index in December - Montgomery Creek, CA
  • Average UV index in December: 2

The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).

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Average cloud cover in December
Montgomery Creek, CA

Average cloud cover in December - Montgomery Creek, CA
  • Average cloud cover in December: 38

The month with the most cloud cover is March (Cloud cover 42).
The months with the least cloud cover are July and August (Cloud cover 6).

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Average visibility in December
Montgomery Creek, CA

Average visibility in December - Montgomery Creek, CA
  • Average visibility in December: 5mi

The months with the highest visibility are February, April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, March and December (5mi).

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Montgomery Creek, California, USA

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