December weather forecast and climate
Forest Falls, CA

Weather in December

December, the first month of the winter, in Forest Falls, is also a fresh month, with average temperature ranging between min 37.4°F (3°C) and max 52.7°F (11.5°C).

Temperature

The coldest month is December, with an average high-temperature of 52.7°F (11.5°C) and an average low-temperature of 37.4°F (3°C).

Humidity

December is the most humid month in Forest Falls, California, with an average relative humidity of 51%.

Rainfall

The wettest months in Forest Falls, California, are February and December, with an average 0.63" (16mm) of rainfall.

Snowfall

January through May, November and December are months with snowfall in Forest Falls, California. In Forest Falls, during December, snow falls for 2.4 days and regularly aggregates up to 2.48" (63mm) of snow. Throughout the year, there are 11.9 snowfall days, and 15.83" (402mm) of snow is accumulated.

Daylight

The month with the shortest days in Forest Falls is December, with an average of 9.9h of daylight.

Sunshine

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

UV index

January, February, November and December, with an average maximum UV index of 3, are months with the lowest UV index in Forest Falls. A UV Index estimate of 3 to 5 represents a moderate health risk from the exposure to the Sun's UV radiation for the average person.
Note: The daily maximum UV index of 3 in December interpret into the following advice:
Take precautions - Protection against sun damage is advised. 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. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
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FAQ

What is the coldest month in Forest Falls?

The coldest month is December, with an average high-temperature of 52.7°F (11.5°C) and an average low-temperature of 37.4°F (3°C).

What is the temperature in December in Forest Falls?

In Forest Falls, in December, the average high-temperature is 52.7°F (11.5°C), and the average low-temperature is 37.4°F (3°C).

What is the most humid month in Forest Falls?

The most humid month in Forest Falls is December, with an average relative humidity of 51%.

What is the average humidity in December in Forest Falls?

In December, the average relative humidity in Forest Falls is 51%.

How many days does it rain in December in Forest Falls?

In Forest Falls, in December, during 3.5 rainfall days, 0.63" (16mm) of precipitation is typically accumulated.

What is the rainiest month in Forest Falls?

The wettest months in Forest Falls, California, are February and December, with an average 0.63" (16mm) of rainfall.

How many days does it snow in December in Forest Falls?

In December, in Forest Falls, it is snowing for 2.4 days. Throughout December, 2.48" (63mm) of snow is accumulated.

What is the month with the shortest days in Forest Falls?

The month with the shortest days is December, with an average of 9.9h of daylight.

How many hours of daylight does Forest Falls have in December?

The average length of the day in December in Forest Falls is 9.9h.

What is the month with the least sunshine in Forest Falls?

December has the least sunshine of the year in Forest Falls, California, with an average of 7h of sunshine.

How long on average sun shines in December in Forest Falls?

In Forest Falls, California, the average sunshine in December is 7h.

What are the months with the lowest UV index in Forest Falls?

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 in Forest Falls?

In Forest Falls, the average daily maximum UV index in December is 3. A UV Index of 3 to 5 symbolizes a medium hazard to health from unprotected exposure to the UV radiation.

Average temperature in December
Forest Falls, CA

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

The warmest month (with the highest average high temperature) is July (89.2°F).
The month with the lowest average high temperature is December (52.7°F).

  • Average low temperature in December: 37.4°F

The month with the highest average low temperature is August (67.1°F).
The coldest month (with the lowest average low temperature) is December (37.4°F).

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Average pressure in December
Forest Falls, CA

Average pressure in December - Forest Falls, CA
  • Average pressure in December: 30.07"

The month with the highest atmospheric pressure is January (30.1").
The month with the lowest atmospheric pressure is June (29.82").

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Average wind speed in December
Forest Falls, CA

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

The windiest month (with the highest average wind speed) is April (7.8mph).
The calmest month (with the lowest average wind speed) is September (5.5mph).

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Average humidity in December
Forest Falls, CA

Average humidity in December - Forest Falls, CA
  • Average humidity in December: 51%

The month with the highest relative humidity is December (51%).
The month with the lowest relative humidity is August (30%).

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Average rainfall in December
Forest Falls, CA

Average rainfall in December - Forest Falls, CA
  • Average rainfall in December: 0.63"

The wettest months (with the highest rainfall) are February and December (0.63").
The driest month (with the least rainfall) is June (0.08").

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Average rainfall days in December
Forest Falls, CA

Average rainfall days in December - Forest Falls, CA
  • Average rainfall days in December: 3.5 days

The month with the highest number of rainy days is July (4.1 days).
The month with the least rainy days is June (1.2 days).

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Average snowfall in December
Forest Falls, CA

Average snowfall in December - Forest Falls, CA
  • Average snowfall in December: 2.48"

The month with the highest snowfall is April (3.82").
Months with the least snowfall are June, July, August, September and October (0").

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Average snowfall days in December
Forest Falls, CA

Average snowfall days in December - Forest Falls, CA
  • Average snowfall days in December: 2.4 days

The month with the highest number of snowfall days is February (3.2 days).
Months with the least snowfall days are June, July, August and September (0 days).

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Average daylight in December /
Average sunshine in December
Forest Falls, CA

Average daylight in December / Average sunshine in December - Forest Falls, 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

Months with the most sunshine are June and July (Average sunshine: 12.1h).
The month with the least sunshine is December (Average sunshine: 7h).

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Average sunshine days in December
Forest Falls, CA

Average sunshine days in December - Forest Falls, CA
  • Average sunshine days in December: 25.3 days

The month with the most sunshine days is October (28.6 days).
The month with the least sunshine days is February (23.7 days).

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Average UV index in December
Forest Falls, CA

Average UV index in December - Forest Falls, CA
  • Average UV index in December: 3

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

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Average cloud cover in December
Forest Falls, CA

Average cloud cover in December - Forest Falls, CA
  • Average cloud cover in December: 21

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

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Average visibility in December
Forest Falls, CA

Average visibility in December - Forest Falls, 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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