December weather forecast
Cottonwood, ID

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Weather in December

The first month of the winter, December, is also a wintry month in Cottonwood, Idaho, with temperature in the range of an average low of 20.7°F (-6.3°C) and an average high of 32.5°F (0.3°C).

Temperature

December is the coldest month, exhibiting average temperatures of 32.5°F (0.3°C) at the peak and 20.7°F (-6.3°C) at the base.

Humidity

In Cottonwood, the average relative humidity in December is 88%.

Rainfall

In Cottonwood, during December, the rain falls for 6.6 days and regularly aggregates up to 2.83" (72mm) of precipitation. In Cottonwood, during the entire year, the rain falls for 133.5 days and collects up to 28.9" (734mm) of precipitation.

Snowfall

January through June, September through December are months with snowfall. In December, it is snowing for 19.9 days. Throughout December, 19.69" (500mm) of snow is accumulated. Throughout the year, there are 112.2 snowfall days, and 105.79" (2687mm) of snow is accumulated.

Daylight

The month with the shortest days is December, with an average of 8h and 42min of daylight.
On the first day of the month, sunrise is at 7:07 am and sunset at 4:01 pm. On the last day of December, sunrise is at 7:27 am and sunset at 4:10 pm PST.

Sunshine

December has the least sunshine of the year, with an average of 4.2h of sunshine.

UV index

The months with the lowest UV index are February and December, with an average maximum UV index of 1. A UV Index of 2, and less, symbolizes a low health risk from unsafe exposure to UV radiation for average individuals.
Note: The maximum daily UV index of 1 in December interprets into the following recommendations:
Babies, children, and those with sensitive skin should always avoid extended periods in the sun. The Sun's radiation is especially intense around midday; try to stay in shade during this period. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage. Observe! Snow reflection can nearly intensify the Sun's UV radiation twofold.
Updated: Aug 26, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What month is the coldest?

December, characterized by an average high temperature of 32.5°F (0.3°C) and a low temperature of 20.7°F (-6.3°C), is generally the coldest month.

How cold is December?

In December, the average high-temperature and low-temperature are 32.5°F (0.3°C) and 20.7°F (-6.3°C) respectively. The average heat index (a.k.a. 'felt air temperature', 'feels like'), which represents the influence of relative humidity on air temperature, in August is calculated to be 82.4°F (28°C).

What is the average humidity in December in Cottonwood?

In Cottonwood, the average relative humidity in December is 88%.

How much does it rain in December?

In December, the rain falls for 6.6 days. Throughout December, 2.83" (72mm) of precipitation is accumulated.

How many days does it snow in December?

In December, it is snowing for 19.9 days. Throughout December, 19.69" (500mm) of snow is accumulated.

What is the month with the shortest days?

The month with the shortest days is December, with an average of 8h and 42min of daylight.

How many hours of daylight does Cottonwood have in December?

In Cottonwood, the average day length in December is 8h and 43min.

When is the sunrise / sunset in December?

In December, on the first day of the month, sunrise is at 7:07 am and sunset at 4:01 pm. On the last day of the month, sunrise is at 7:27 am and sunset at 4:10 pm PST.

What is the month with the least sunshine?

With an average of 4.2h of sunshine, December has the least sunshine of the year.

How many hours of sunshine does Cottonwood have in December?

The average sunshine duration in December is 4.2h.

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

The months with the lowest UV index are February and December, with an average maximum UV index of 1.

What is the UV index intensity in December?

The average daily maximum UV index in December is 1. A UV Index of 2, and less, symbolizes a minimal health vulnerability 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
Cottonwood, ID

Average temperature in December - Cottonwood, ID
  • Average high temperature in December: 32.5°F

The warmest month (with the highest average high temperature) is August (82°F).
The month with the lowest average high temperature is December (32.5°F).

  • Average low temperature in December: 20.7°F

The month with the highest average low temperature is August (54.7°F).
The coldest month (with the lowest average low temperature) is December (20.7°F).

Average pressure in December
Cottonwood, ID

Average pressure in December - Cottonwood, ID
  • Average pressure in December: 30.19"Hg

The month with the highest atmospheric pressure is January (30.21"Hg).
The months with the lowest atmospheric pressure are June and August (29.93"Hg).

Average wind speed in December
Cottonwood, ID

Average wind speed in December - Cottonwood, ID
  • Average wind speed in December: 4.7mph

The windiest months (with the highest average wind speed) are January, February, March and November (4.8mph).
The calmest month (with the lowest average wind speed) is August (3.6mph).

Average humidity in December
Cottonwood, ID

Average humidity in December - Cottonwood, ID
  • Average humidity in December: 88%

The month with the highest relative humidity is January (90%).
The month with the lowest relative humidity is August (44%).

Average rainfall in December
Cottonwood, ID

Average rainfall in December - Cottonwood, ID
  • Average rainfall in December: 2.83"

The wettest month (with the highest rainfall) is April (3.58").
The driest month (with the least rainfall) is July (0.63").

Average rainfall days in December
Cottonwood, ID

Average rainfall days in December - Cottonwood, ID
  • Average rainfall days in December: 6.6 days

The month with the highest number of rainy days is April (17.8 days).
The month with the least rainy days is January (6 days).

Average snowfall in December
Cottonwood, ID

Average snowfall in December - Cottonwood, ID
  • Average snowfall in December: 19.69"

The month with the highest snowfall is February (23.11").
The months with the least snowfall are July and August (0").

Average snowfall days in December
Cottonwood, ID

Average snowfall days in December - Cottonwood, ID
  • Average snowfall days in December: 19.9 days

The month with the highest number of snowfall days is December (19.9 days).
The months with the least snowfall days are July and August (0 days).

Average daylight in December /
Average sunshine in December
Cottonwood, ID

Average daylight in December / Average sunshine in December - Cottonwood, ID
  • Average daylight in December: 8h and 4min

The month with the longest days is June (Average daylight: 15h and 42min).
The month with the shortest days is December (Average daylight: 8h and 42min).

  • Average sunshine in December: 4h and 1min

The month with the most sunshine is August (Average sunshine: 11h and 54min).
The month with the least sunshine is December (Average sunshine: 4h and 12min).

Average sunshine days in December
Cottonwood, ID

Average sunshine days in December - Cottonwood, ID
  • Average sunshine days in December: 10.7 days

The month with the most sunshine days is July (21.2 days).
The month with the least sunshine days is March (7.3 days).

Average UV index in December
Cottonwood, ID

Average UV index in December - Cottonwood, ID
  • Average UV index in December: 1

The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are February and December (UV index 1).

Average cloud cover in December
Cottonwood, ID

Average cloud cover in December - Cottonwood, ID
  • Average cloud cover in December: 57

The month with the most cloud cover is February (Cloud cover 59).
The month with the least cloud cover is August (Cloud cover 13).

Average visibility in December
Cottonwood, ID

Average visibility in December - Cottonwood, ID
  • 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 January, February and December (4mi).

Cottonwood, Idaho, USA

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