December weather forecast
Wilseyville, CA

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Weather in December

The first month of the winter, December, is also a frosty month in Wilseyville, California, with an average temperature fluctuating between 32.9°F (0.5°C) and 48.6°F (9.2°C).

Temperature

December brings the lowest temperatures, with an average high of 48.6°F (9.2°C) and an average low of 32.9°F (0.5°C).

Humidity

In Wilseyville, the average relative humidity in December is 67%.

Rainfall

In Wilseyville, in December, during 9.4 rainfall days, 4.96" (126mm) of precipitation is typically accumulated. Throughout the year, there are 78.6 rainfall days, and 31.18" (792mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January through May, October through December. In Wilseyville, in December, snow falls for 5.1 days, with typically accumulated 7.99" (203mm) of snow. In Wilseyville, during the entire year, snow falls for 27.8 days and aggregates up to 71.02" (1804mm) of snow.

Daylight

December has the shortest days of the year, with an average of 9h and 30min of daylight.
On the first day of the month, sunrise is at 7:00 am and sunset at 4:41 pm. On the last day of December, in Wilseyville, sunrise is at 7:19 am and sunset at 4:51 pm PST.

Sunshine

December has the least sunshine of the year in Wilseyville, with an average of 5.9h of sunshine.

UV index

The months with the lowest UV index are February, November and December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a low threat to health from unprotected exposure to Sun's UV rays for the average person.
Note: During December, 2 as the daily maximum UV index converts into the following advice:
While sun exposure does not greatly affect most, individuals with fair skin, babies, and children always need vigilant safeguarding. Avoiding direct sunlight during midday hours helps reduce the risk from intense UV radiation. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades. Attention! Nearly twice the Sun's UV radiation can be reflected by snow.
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Frequently asked questions

What part of the year is the coldest in Wilseyville?

Wilseyville's coldest month, December, registers temperatures that range from a high of 48.6°F (9.2°C) to a low of 32.9°F (0.5°C).

What is the average December temperature in Wilseyville?

The high-temperature, in December, in Wilseyville, is 48.6°F (9.2°C), while the low-temperature averages to 32.9°F (0.5°C).

What is the average humidity in December in Wilseyville?

The average relative humidity in December in Wilseyville, California, is 67%.

How many days does it rain in December in Wilseyville?

In Wilseyville, California, during December, the rain falls for 9.4 days and regularly aggregates up to 4.96" (126mm) of precipitation.

How many days does it snow in December in Wilseyville?

In December, in Wilseyville, it is snowing for 5.1 days. Throughout December, 7.99" (203mm) of snow is accumulated.

What is the month with the shortest days in Wilseyville?

The month with the shortest days in Wilseyville, California, is December, with an average of 9h and 30min of daylight.

How many hours of daylight does Wilseyville have in December?

In December, the average day length in Wilseyville is 9h and 32min.

When are sunrise and sunset in December in Wilseyville?

On the first day of December in Wilseyville, sunrise is at 7:00 am and sunset at 4:41 pm. On the last day of the month, sunrise is at 7:19 am and sunset at 4:51 pm PST.

What is the month with the least sunshine in Wilseyville?

The month with the least sunshine is December, with an average of 5.9h of sunshine.

How long on average sun shines in December in Wilseyville?

In December, the average sunshine duration in Wilseyville is 5.9h.

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

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

What is the UV index intensity in December in Wilseyville?

The average daily maximum UV index in December is 2. A UV Index reading of 2, and below, represents a low health risk 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
Wilseyville, CA

Average temperature in December - Wilseyville, CA
  • Average high temperature in December: 48.6°F

The warmest month (with the highest average high temperature) is July (86.5°F).
The month with the lowest average high temperature is December (48.6°F).

  • Average low temperature in December: 32.9°F

The month with the highest average low temperature is July (57.4°F).
The coldest month (with the lowest average low temperature) is December (32.9°F).

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Average pressure in December
Wilseyville, CA

Average pressure in December - Wilseyville, CA
  • Average pressure in December: 30.13"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).

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Average wind speed in December
Wilseyville, CA

Average wind speed in December - Wilseyville, CA
  • Average wind speed in December: 5.3mph

The windiest month (with the highest average wind speed) is February (6.2mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).

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Average humidity in December
Wilseyville, CA

Average humidity in December - Wilseyville, CA
  • Average humidity in December: 67%

The month with the highest relative humidity is March (74%).
The months with the lowest relative humidity are July and August (37%).

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Average rainfall in December
Wilseyville, CA

Average rainfall in December - Wilseyville, CA
  • Average rainfall in December: 4.96"

The wettest month (with the highest rainfall) is March (6.14").
The driest months (with the least rainfall) are July and August (0.08").

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Average rainfall days in December
Wilseyville, CA

Average rainfall days in December - Wilseyville, CA
  • Average rainfall days in December: 9.4 days

The month with the highest number of rainy days is March (12.1 days).
The month with the least rainy days is August (1.8 days).

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Average snowfall in December
Wilseyville, CA

Average snowfall in December - Wilseyville, CA
  • Average snowfall in December: 7.99"

The month with the highest snowfall is March (18.98").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in December
Wilseyville, CA

Average snowfall days in December - Wilseyville, CA
  • Average snowfall days in December: 5.1 days

The month with the highest number of snowfall days is March (6.4 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
Wilseyville, CA

Average daylight in December / Average sunshine in December - Wilseyville, CA
  • Average daylight in December: 9h and 3min

The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).

  • Average sunshine in December: 5h and 5min

The month with the most sunshine is July (Average sunshine: 12h and 12min).
The month with the least sunshine is December (Average sunshine: 5h and 54min).

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Average sunshine days in December
Wilseyville, CA

Average sunshine days in December - Wilseyville, CA
  • Average sunshine days in December: 19 days

The month with the most sunshine days is August (27.3 days).
The month with the least sunshine days is March (14.3 days).

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Average UV index in December
Wilseyville, CA

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

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

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Average cloud cover in December
Wilseyville, CA

Average cloud cover in December - Wilseyville, CA
  • Average cloud cover in December: 32

The month with the most cloud cover is March (Cloud cover 37).
The months with the least cloud cover are July and August (Cloud cover 5).

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Average visibility in December
Wilseyville, CA

Average visibility in December - Wilseyville, 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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Wilseyville, California, USA

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