December weather forecast
Hayfork, CA

Share

Weather in December

December, the first month of the winter in Hayfork, is also a frosty month, with an average temperature fluctuating between 46°F (7.8°C) and 30.2°F (-1°C).

Temperature

Hayfork's December weather reaches an average high of 46°F (7.8°C) and an average low of 30.2°F (-1°C), making it the coldest month.

Humidity

In Hayfork, the average relative humidity in December is 80%.

Rainfall

The month with the most rainfall in Hayfork is December, when the rain falls for 11.5 days and typically aggregates up to 4.17" (106mm) of precipitation.

Snowfall

January through May, November and December are months with snowfall in Hayfork. In Hayfork, in December, snow falls for 3.8 days, with typically accumulated 5.08" (129mm) of snow. In Hayfork, during the entire year, snow falls for 21.4 days and aggregates up to 28.74" (730mm) of snow.

Daylight

December has the shortest days of the year in Hayfork, with an average of 9h and 18min of daylight.
On the first day of December, sunrise is at 7:17 am and sunset at 4:46 pm. On the last day of the month, sunrise is at 7:36 am and sunset at 4:56 pm PST.

Sunshine

December has the least sunshine of the year in Hayfork, with an average of 4.7h of sunshine.

UV index

January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Hayfork, California. A UV Index estimate of 2, and below, represents a minimal health hazard from unsafe exposure to UV radiation for average individuals.
Note: An average UV index of 2 in December transforms into this advice:
Apart from children, who require continuous protection, most can endure sun exposure for up to an hour without experiencing burns. Solar radiation is at its peak intensity during midday, so it's advisable to stay indoors or in the shade. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays. Be cautious! The UV radiation from the Sun can be magnified almost twofold by snow reflection.

Frequently asked questions

What is the coldest time of year in Hayfork?

Hayfork, California, experiences its average lowest temperatures in December, reaching a peak of 46°F (7.8°C) and a minimum of 30.2°F (-1°C).

What is the usual temperature for Hayfork in December?

The high-temperature in Hayfork, California, during December is 46°F (7.8°C) and the low-temperature is 30.2°F (-1°C). In August, the average heat index (a.k.a. 'real feel', 'felt air temperature'), which represents the influence of relative humidity on air temperature, is appraised at 89.6°F (32°C).

What is the average humidity in December in Hayfork?

In December, the average relative humidity in Hayfork, California, is 80%.

What is the wettest month in Hayfork?

December is the month with the most rainfall in Hayfork, California. Rain falls for 11.5 days and accumulates 4.17" (106mm) of precipitation.

How much does it rain in Hayfork in December?

In Hayfork, California, in December, during 11.5 rainfall days, 4.17" (106mm) of precipitation is typically accumulated.

How much does it snow in Hayfork in December?

In Hayfork, in December, snow falls for 3.8 days, with typically accumulated 5.08" (129mm) of snow.

What is the month with the shortest days in Hayfork?

December has the shortest days of the year in Hayfork, California, with an average of 9h and 18min of daylight.

What is the average length of the day in December in Hayfork?

In Hayfork, the average day length in December is 9h and 20min.

When is the sunrise / sunset in December in Hayfork?

In December, on the first day of the month, sunrise is at 7:17 am and sunset at 4:46 pm. On the last day of the month, in Hayfork, California, sunrise is at 7:36 am and sunset at 4:56 pm PST.

What is the month with the least sunshine in Hayfork?

The month with the least sunshine is December, with an average of 4.7h of sunshine.

How many hours of sunshine does Hayfork have in December?

The average sunshine duration in December in Hayfork, California, is 4.7h.

What are the months with the lowest UV index in Hayfork?

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

What is the UV index reading in December in Hayfork?

The average daily maximum UV index in December is 2. A UV Index estimate of 2, and below, represents a low health risk from unprotected exposure to 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
Hayfork, CA

Average temperature in December - Hayfork, CA
  • Average high temperature in December: 46°F

The warmest months (with the highest average high temperature) are July and August (86.5°F).
The month with the lowest average high temperature is December (46°F).

  • Average low temperature in December: 30.2°F

The month with the highest average low temperature is July (51.1°F).
The coldest month (with the lowest average low temperature) is December (30.2°F).

Average pressure in December
Hayfork, CA

Average pressure in December - Hayfork, CA
  • Average pressure in December: 30.12"Hg

The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is August (29.93"Hg).

Average wind speed in December
Hayfork, CA

Average wind speed in December - Hayfork, CA
  • Average wind speed in December: 4mph

The windiest month (with the highest average wind speed) is April (4.8mph).
The calmest month (with the lowest average wind speed) is August (3.3mph).

Average humidity in December
Hayfork, CA

Average humidity in December - Hayfork, CA
  • Average humidity in December: 80%

The month with the highest relative humidity is March (81%).
The month with the lowest relative humidity is August (52%).

Average rainfall in December
Hayfork, CA

Average rainfall in December - Hayfork, CA
  • Average rainfall in December: 4.17"

The wettest month (with the highest rainfall) is December (4.17").
The driest month (with the least rainfall) is July (0.16").

Average rainfall days in December
Hayfork, CA

Average rainfall days in December - Hayfork, CA
  • Average rainfall days in December: 11.5 days

The month with the highest number of rainy days is March (15.3 days).
The month with the least rainy days is August (2.3 days).

Average snowfall in December
Hayfork, CA

Average snowfall in December - Hayfork, CA
  • Average snowfall in December: 5.08"

The month with the highest snowfall is February (7.52").
The months with the least snowfall are June, July, August, September and October (0").

Average snowfall days in December
Hayfork, CA

Average snowfall days in December - Hayfork, CA
  • Average snowfall days in December: 3.8 days

The month with the highest number of snowfall days is February (5 days).
The months with the least snowfall days are June, July, August, September and October (0 days).

Average daylight in December /
Average sunshine in December
Hayfork, CA

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

The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 18min).

  • Average sunshine in December: 4h and 4min

The months with the most sunshine are July and August (Average sunshine: 11h and 54min).
The month with the least sunshine is December (Average sunshine: 4h and 42min).

Average sunshine days in December
Hayfork, CA

Average sunshine days in December - Hayfork, CA
  • Average sunshine days in December: 16.6 days

The month with the most sunshine days is July (26 days).
The month with the least sunshine days is March (13.6 days).

Average UV index in December
Hayfork, CA

Average UV index in December - Hayfork, 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).

Average cloud cover in December
Hayfork, CA

Average cloud cover in December - Hayfork, CA
  • Average cloud cover in December: 51

The month with the most cloud cover is March (Cloud cover 52).
The month with the least cloud cover is August (Cloud cover 7).

Average visibility in December
Hayfork, CA

Average visibility in December - Hayfork, CA
  • Average visibility in December: 4mi

The months with the highest visibility are May, June, July, August, September and October (6mi).
The months with the lowest visibility are March and December (4mi).

Hayfork, California, USA

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location