December weather forecast
Forest Falls, CA

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Weather in December

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

Temperature

December tends to be the coldest month, with temperatures averaging a daily high of 52.7°F (11.5°C) and a low of 37.4°F (3°C).

Humidity

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

Rainfall

The wettest months 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, during December, snow falls for 2.4 days and regularly aggregates up to 2.48" (63mm) of snow. In Forest Falls, during the entire year, snow falls for 11.9 days and aggregates up to 15.83" (402mm) of snow.

Daylight

With an average of 9h and 54min of daylight, December has the shortest days of the year.
On the first day of the month, sunrise is at 6:35 am and sunset at 4:38 pm. On the last day of December, in Forest Falls, sunrise is at 6:53 am and sunset at 4:48 pm PST.

Sunshine

The month with the least sunshine in Forest Falls is December, 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 value of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV rays for the average person.
Note: In December, a regular UV index of 3 translates into these guidelines:
Ensure safety - Sun damage prevention is strongly urged. Being exposed to the midday Sun can have harmful effects due to strong UV radiation; always take precautions. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades. Guard yourself! Snow reflection can almost double the UV radiation from the Sun.
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Frequently asked questions

What is the coldest time of year in Forest Falls?

December is the coldest month, 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?

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

What is the average humidity in December in Forest Falls?

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

What is the rainiest month in Forest Falls?

The months with the most rainfall are February and December, with an average 0.63" (16mm) of precipitation.

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

In December, in Forest Falls, California, the rain falls for 3.5 days. Throughout December, 0.63" (16mm) of precipitation is accumulated.

How much does it snow in Forest Falls in December?

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 in Forest Falls is December, with an average of 9h and 54min of daylight.

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

The average day length in December in Forest Falls, California, is 9h and 56min.

When are sunrise and sunset in December in Forest Falls?

In December, on the first day of the month, sunrise is at 6:35 am and sunset at 4:38 pm. On the last day of the month, in Forest Falls, California, sunrise is at 6:53 am and sunset at 4:48 pm PST.

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

The month with the least sunshine in Forest Falls is December, with an average of 7h of sunshine.

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

In December, the average sunshine duration is 7h.

When is the lowest UV index in Forest Falls?

The months with the lowest UV index in Forest Falls are January, February, November and December, with an average maximum UV index of 3.

What is the UV index reading in December in Forest Falls?

In Forest Falls, the average daily maximum UV index in December is 3. A UV Index value of 3 to 5 symbolizes a medium hazard to health 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
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"Hg

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

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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").
The 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).
The 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: 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).

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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

The months with the highest UV index are June and July (UV index 7).
The 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).
The 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

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).

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Forest Falls, California, USA

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