December weather forecast
Cottonwood, ID

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Weather in December

December, the first month of the winter in Cottonwood, is still a cold month, with an average temperature ranging between min 20.7°F (-6.3°C) and max 32.5°F (0.3°C).

Temperature

December, with an average high of 32.5°F (0.3°C) and a low of 20.7°F (-6.3°C), signifies the coldest month of the year.

Humidity

The average relative humidity in December in Cottonwood is 88%.

Rainfall

In Cottonwood, during December, the rain falls for 6.6 days and regularly aggregates up to 2.83" (72mm) of precipitation. Throughout the year, there are 133.5 rainfall days, and 28.9" (734mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January through June, September through December. In Cottonwood, in December, during 19.9 snowfall days, 19.69" (500mm) of snow is typically 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 in Cottonwood, Idaho, 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

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

UV index

February and December, with an average maximum UV index of 1, are months with the lowest UV index in Cottonwood, Idaho. A UV Index of 2, and less, symbolizes a low threat to health from unsafe exposure to UV radiation for ordinary individuals.
Note: During December, 1 as the daily maximum UV index converts into the following advice:
In contrast to children, who must always be shielded from the sun, most people can tolerate up to an hour of sun exposure without any burns. Stay safe from the Sun's strongest UV rays by limiting exposure during midday. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades. Take heed! Reflection from the snow can almost amplify the Sun's UV radiation by double.
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Frequently asked questions

What time of the year is the coldest in Cottonwood?

December stands out as Cottonwood's coldest month, with an average high-temperature of 32.5°F (0.3°C) and a low-temperature of 20.7°F (-6.3°C).

How cold is it in Cottonwood in December?

During December, Cottonwood experiences an average high-temperature of 32.5°F (0.3°C) and a low-temperature of 20.7°F (-6.3°C). In August, the average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which combines air temperature and relative humidity, is computed to be 82.4°F (28°C).

What is the average humidity in December in Cottonwood?

The average relative humidity in December in Cottonwood, Idaho, is 88%.

How many days does it rain in December in Cottonwood?

In Cottonwood, in December, it is raining for 6.6 days, with typically 2.83" (72mm) of accumulated precipitation.

How much does it snow in Cottonwood in December?

In Cottonwood, in December, snow falls for 19.9 days, with typically accumulated 19.69" (500mm) of snow.

What is the month with the shortest days in Cottonwood?

With an average of 8h and 42min of daylight, December has the shortest days of the year in Cottonwood, Idaho.

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

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

When are sunrise and sunset in December in Cottonwood?

On the first day of December, 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 in Cottonwood?

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?

In December, the average sunshine duration in Cottonwood, Idaho, is 4.2h.

When is the lowest UV index in Cottonwood?

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

What is the UV index intensity in December in Cottonwood?

In Cottonwood, the average daily maximum UV index in December is 1. A UV Index estimate of 2, and below, represents a low health threat from unsafe exposure to Sun's UV rays.
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).

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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).

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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).

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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%).

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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").

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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).

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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").

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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).

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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).

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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).

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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).

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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).

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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).

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Cottonwood, Idaho, USA

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