December weather forecast and climate
McArthur, CA

Weather in December

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

Temperature

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

Humidity

The average relative humidity in McArthur, California, is 76%.

Rainfall

In McArthur, California, during 12.5 rainfall days, 4.21" (107mm) of precipitation is typically accumulated. In McArthur, during the entire year, the rain falls for 105 days and collects up to 24.69" (627mm) of precipitation.

Snowfall

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

Daylight

The month with the shortest days is December, with an average of 9.3h of daylight.

Sunshine

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

UV index

Months with the lowest UV index in McArthur are January, February, November and December, with an average maximum UV index of 2. A UV Index estimate of 2, and below, represents a minimal health vulnerability from unprotected exposure to the Sun's UV rays for ordinary individuals.
Note: The average daily UV index of 2 transform into the following instructions:
For the majority, extended sun exposure is not of great concern. Infants and people with sensitive skin must always be protected. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. 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 McArthur?

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

What is the temperature in December in McArthur?

In McArthur, California, in December, the average high-temperature is 43.3°F (6.3°C), and the average low-temperature is 27.9°F (-2.3°C).

What is the average humidity in December in McArthur?

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

How much does it rain in McArthur in December?

In McArthur, in December, it is raining for 12.5 days, with typically 4.21" (107mm) of accumulated precipitation.

How much does it snow in McArthur in December?

In McArthur, during December, snow falls for 7.5 days and regularly aggregates up to 8.11" (206mm) of snow.

What is the month with the shortest days in McArthur?

December has the shortest days of the year in McArthur, California, with an average of 9.3h of daylight.

How many hours of daylight does McArthur have in December?

In McArthur, the average length of the day in December is 9.3h.

What is the month with the least sunshine in McArthur?

December has the least sunshine of the year in McArthur, California, with an average of 5.7h of sunshine.

How long on average sun shines in December in McArthur?

In McArthur, the average sunshine in December is 5.7h.

What is the month with the lowest UV index in McArthur?

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

What is the UV index intensity in December in McArthur?

The average daily maximum UV index in December in McArthur is 2. A UV Index estimate of 2, and below, represents a low health risk from unsafe exposure to the Sun's UV rays.

Average temperature in December
McArthur, CA

Average temperature in December - McArthur, 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
McArthur, CA

Average pressure in December - McArthur, CA
  • Average pressure in December: 30.16"

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

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Average wind speed in December
McArthur, CA

Average wind speed in December - McArthur, 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
McArthur, CA

Average humidity in December - McArthur, CA
  • Average humidity in December: 76%

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

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Average rainfall in December
McArthur, CA

Average rainfall in December - McArthur, 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
McArthur, CA

Average rainfall days in December - McArthur, 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
McArthur, CA

Average snowfall in December - McArthur, CA
  • Average snowfall in December: 8.11"

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

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Average snowfall days in December
McArthur, CA

Average snowfall days in December - McArthur, CA
  • Average snowfall days in December: 7.5 days

The month with the highest number of snowfall days is March (8 days).
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
McArthur, CA

Average daylight in December / Average sunshine in December - McArthur, CA
  • Average daylight in December: 9.3h

The month with the longest days is June (Average daylight: 15.1h).
The month with the shortest days is December (Average daylight: 9.3h).

  • Average sunshine in December: 5.7h

The month with the most sunshine is July (Average sunshine: 12.1h).
The month with the least sunshine is December (Average sunshine: 5.7h).

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Average sunshine days in December
McArthur, CA

Average sunshine days in December - McArthur, 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
McArthur, CA

Average UV index in December - McArthur, CA
  • Average UV index in December: 2

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

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Average cloud cover in December
McArthur, CA

Average cloud cover in December - McArthur, CA
  • Average cloud cover in December: 38

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

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Average visibility in December
McArthur, CA

Average visibility in December - McArthur, CA
  • Average visibility in December: 5mi

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

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