December weather forecast
Quincy, CA

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Weather in December

December, the first month of the winter in Quincy, is also a wintry month, with an average temperature varying between 27.7°F (-2.4°C) and 42.6°F (5.9°C).

Temperature

Quincy, California, witnesses the coldest weather in December, with temperatures averaging a high of 42.6°F (5.9°C) and a low of 27.7°F (-2.4°C).

Humidity

In Quincy, the average relative humidity in December is 75%.

Rainfall

In Quincy, during December, the rain falls for 6.8 days and regularly aggregates up to 6.06" (154mm) of precipitation. In Quincy, during the entire year, the rain falls for 71.8 days and collects up to 39.29" (998mm) of precipitation.

Snowfall

January through June, September through December are months with snowfall. In Quincy, during December, snow falls for 11.4 days and regularly aggregates up to 32.24" (819mm) of snow. In Quincy, during the entire year, snow falls for 64 days and aggregates up to 184.53" (4687mm) of snow.

Daylight

The month with the shortest days is December, with an average of 9h and 24min of daylight.
On the first day of the month, sunrise is at 7:06 am and sunset at 4:39 pm. On the last day of December, sunrise is at 7:25 am and sunset at 4:49 pm PST.

Sunshine

December has the least sunshine of the year, with an average of 5.5h of sunshine.

UV index

January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index estimate of 2, and below, represents a minimal health hazard from unprotected exposure to Sun's UV rays for the ordinary person.
Note: The maximum UV index of 2 during December leads to these instructions:
Although prolonged sun exposure does not typically bother most people, children, babies, and those with sensitive skin should always have protection. Considering the harmful UV rays from the Sun during midday, it's essential to reduce exposure. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation. Be prepared! The intensity of the Sun's UV radiation can be amplified nearly double due to snow reflection.
Updated: Jun 29, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the coldest time of year in Quincy?

In Quincy, December is known for its average lowest temperatures, reaching a high of 42.6°F (5.9°C) and a low of 27.7°F (-2.4°C).

How cold does it get in December?

In December, the average high-temperature and low-temperature are 42.6°F (5.9°C) and 27.7°F (-2.4°C) respectively. The average heat index (a.k.a. 'real feel', 'apparent temperature'), which combines relative humidity and air temperature, in August is evaluated at 82.4°F (28°C).

What is the average humidity in December?

In December, the average relative humidity is 75%.

How much does it rain in December?

In Quincy, in December, it is raining for 6.8 days, with typically 6.06" (154mm) of accumulated precipitation.

How much does it snow in December?

In Quincy, in December, during 11.4 snowfall days, 32.24" (819mm) of snow is typically accumulated.

What is the month with the shortest days?

The month with the shortest days is December, with an average of 9h and 24min of daylight.

What is the average length of the day in December?

In December, the average day length is 9h and 23min.

When are sunrise and sunset in December?

In December, on the first day of the month, sunrise is at 7:06 am and sunset at 4:39 pm. On the last day of the month, sunrise is at 7:25 am and sunset at 4:49 pm PST.

What is the month with the least sunshine in Quincy?

With an average of 5.5h of sunshine, December has the least sunshine of the year.

How long on average sun shines in December?

The average sunshine duration in December in Quincy is 5.5h.

When is the lowest UV index?

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 Quincy, the average daily maximum UV index in December is 2. A UV Index of 2, and less, symbolizes a low health threat 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
Quincy, CA

Average temperature in December - Quincy, CA
  • Average high temperature in December: 42.6°F

The warmest month (with the highest average high temperature) is July (84.6°F).
The month with the lowest average high temperature is December (42.6°F).

  • Average low temperature in December: 27.7°F

The month with the highest average low temperature is July (52.9°F).
The coldest month (with the lowest average low temperature) is December (27.7°F).

Average pressure in December
Quincy, CA

Average pressure in December - Quincy, CA
  • Average pressure in December: 30.15"Hg

The month with the highest atmospheric pressure is January (30.18"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).

Average wind speed in December
Quincy, CA

Average wind speed in December - Quincy, CA
  • Average wind speed in December: 6.1mph

The windiest month (with the highest average wind speed) is February (6.4mph).
The calmest month (with the lowest average wind speed) is August (5.1mph).

Average humidity in December
Quincy, CA

Average humidity in December - Quincy, CA
  • Average humidity in December: 75%

The month with the highest relative humidity is March (80%).
The month with the lowest relative humidity is July (40%).

Average rainfall in December
Quincy, CA

Average rainfall in December - Quincy, CA
  • Average rainfall in December: 6.06"

The wettest month (with the highest rainfall) is March (7.56").
The driest month (with the least rainfall) is July (0.12").

Average rainfall days in December
Quincy, CA

Average rainfall days in December - Quincy, CA
  • Average rainfall days in December: 6.8 days

The month with the highest number of rainy days is May (10.6 days).
The month with the least rainy days is August (2.2 days).

Average snowfall in December
Quincy, CA

Average snowfall in December - Quincy, CA
  • Average snowfall in December: 32.24"

The month with the highest snowfall is March (43.23").
The months with the least snowfall are July and August (0").

Average snowfall days in December
Quincy, CA

Average snowfall days in December - Quincy, CA
  • Average snowfall days in December: 11.4 days

The month with the highest number of snowfall days is March (13.1 days).
The months with the least snowfall days are July and August (0 days).

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

Average daylight in December / Average sunshine in December - Quincy, 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 24min).

  • Average sunshine in December: 5h and 3min

The month with the most sunshine is July (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 5h and 30min).

Average sunshine days in December
Quincy, CA

Average sunshine days in December - Quincy, CA
  • Average sunshine days in December: 17 days

The month with the most sunshine days is August (27.9 days).
The month with the least sunshine days is March (13.4 days).

Average UV index in December
Quincy, CA

Average UV index in December - Quincy, 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
Quincy, CA

Average cloud cover in December - Quincy, CA
  • Average cloud cover in December: 39

The month with the most cloud cover is March (Cloud cover 46).
The month with the least cloud cover is July (Cloud cover 5).

Average visibility in December
Quincy, CA

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

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

Quincy, California, USA

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