December weather forecast
Cocolalla, ID

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Weather in December

The first month of the winter, December, is also a subzero cold month in Cocolalla, Idaho, with temperature in the range of an average low of 19.4°F (-7°C) and an average high of 29.7°F (-1.3°C).

Temperature

In Cocolalla, Idaho, December is the coldest month, with temperatures averaging a high of 29.7°F (-1.3°C) and a low of 19.4°F (-7°C).

Humidity

In December, the average relative humidity in Cocolalla is 91%.

Rainfall

The months with the most rainfall in Cocolalla are January and December, with an average 3.07" (78mm) of precipitation.

Snowfall

January through May, September through December are months with snowfall. In Cocolalla, during December, snow falls for 17.7 days and regularly aggregates up to 13.94" (354mm) of snow. Throughout the year, in Cocolalla, there are 78 snowfall days, and 56.73" (1441mm) of snow is accumulated.

Daylight

The month with the shortest days is December, with an average of 8h and 24min of daylight.
On the first day of December in Cocolalla, sunrise is at 7:16 am and sunset at 3:55 pm. On the last day of the month, sunrise is at 7:36 am and sunset at 4:03 pm PST.

Sunshine

The months with the least sunshine in Cocolalla, Idaho, are January and December, with an average of 3.3h of sunshine.

UV index

February, November and December, with an average maximum UV index of 1, are months with the lowest UV index in Cocolalla. A UV Index estimate of 2, and below, represents a low threat to health from unprotected exposure to Sun's UV rays for average individuals.
Note: The UV index of 1 during December translates into the following guidance:
Children must always have sun protection, unlike most people, who can tolerate up to an hour in the sun without any burns. The Sun's UV radiation is especially harmful around midday, so reduce exposure and stay safe. Always opt for UVA and UVB-resistant sunglasses on radiant days. Stay alert! Snow's reflective properties can almost double the UV radiation from the Sun.
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Frequently asked questions

What is the coldest time of year in Cocolalla?

December, with an average high of 29.7°F (-1.3°C) and a low of 19.4°F (-7°C), signifies the coldest month of the year in Cocolalla, Idaho.

How cold is it in Cocolalla in December?

An average high-temperature, in December, in Cocolalla, is 29.7°F (-1.3°C) and the average low-temperature is 19.4°F (-7°C). The average heat index (a.k.a. 'real feel', 'feels like'), which factors the actual air temperature with the relative humidity, in August is computed to be 80.6°F (27°C).

What is the average humidity in December in Cocolalla?

In December, the average relative humidity in Cocolalla is 91%.

What is the rainiest month in Cocolalla?

The months with the most rainfall in Cocolalla are January and December, with an average 3.07" (78mm) of precipitation.

How much does it rain in Cocolalla in December?

In Cocolalla, during December, the rain falls for 9.4 days and regularly aggregates up to 3.07" (78mm) of precipitation.

How many days does it snow in December in Cocolalla?

In Cocolalla, Idaho, during December, snow falls for 17.7 days and regularly aggregates up to 13.94" (354mm) of snow.

What is the month with the shortest days in Cocolalla?

The month with the shortest days in Cocolalla, Idaho, is December, with an average of 8h and 24min of daylight.

How many hours of daylight does Cocolalla have in December?

The average day length in December in Cocolalla is 8h and 26min.

When are sunrise and sunset in December in Cocolalla?

On the first day of December in Cocolalla, Idaho, sunrise is at 7:16 am and sunset at 3:55 pm. On the last day of the month, sunrise is at 7:36 am and sunset at 4:03 pm PST.

What is the month with the least sunshine in Cocolalla?

The months with the least sunshine in Cocolalla, Idaho, are January and December, with an average of 3.3h of sunshine.

How many hours of sunshine does Cocolalla have in December?

In Cocolalla, Idaho, the average sunshine duration in December is 3.3h.

When is the lowest UV index in Cocolalla?

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

What is the UV index intensity in December in Cocolalla?

In Cocolalla, the average daily maximum UV index in December is 1. A UV Index estimate of 2, and below, represents a low health threat from 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
Cocolalla, ID

Average temperature in December - Cocolalla, ID
  • Average high temperature in December: 29.7°F

The warmest month (with the highest average high temperature) is July (80.8°F).
The month with the lowest average high temperature is December (29.7°F).

  • Average low temperature in December: 19.4°F

The month with the highest average low temperature is August (49.6°F).
The coldest month (with the lowest average low temperature) is December (19.4°F).

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Average pressure in December
Cocolalla, ID

Average pressure in December - Cocolalla, ID
  • Average pressure in December: 30.17"Hg

The month with the highest atmospheric pressure is January (30.19"Hg).
The months with the lowest atmospheric pressure are June and August (29.92"Hg).

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Average wind speed in December
Cocolalla, ID

Average wind speed in December - Cocolalla, ID
  • Average wind speed in December: 3.4mph

The windiest month (with the highest average wind speed) is April (4.5mph).
The calmest month (with the lowest average wind speed) is December (3.4mph).

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Average humidity in December
Cocolalla, ID

Average humidity in December - Cocolalla, ID
  • Average humidity in December: 91%

The month with the highest relative humidity is January (94%).
The month with the lowest relative humidity is August (51%).

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Average rainfall in December
Cocolalla, ID

Average rainfall in December - Cocolalla, ID
  • Average rainfall in December: 3.07"

The wettest months (with the highest rainfall) are January and December (3.07").
The driest month (with the least rainfall) is August (0.51").

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Average rainfall days in December
Cocolalla, ID

Average rainfall days in December - Cocolalla, ID
  • Average rainfall days in December: 9.4 days

The month with the highest number of rainy days is April (18.1 days).
The month with the least rainy days is August (6.3 days).

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Average snowfall in December
Cocolalla, ID

Average snowfall in December - Cocolalla, ID
  • Average snowfall in December: 13.94"

The month with the highest snowfall is January (15.94").
The months with the least snowfall are June, July and August (0").

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Average snowfall days in December
Cocolalla, ID

Average snowfall days in December - Cocolalla, ID
  • Average snowfall days in December: 17.7 days

The month with the highest number of snowfall days is December (17.7 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
Cocolalla, ID

Average daylight in December / Average sunshine in December - Cocolalla, ID
  • Average daylight in December: 8h and 2min

The month with the longest days is June (Average daylight: 16h and 0min).
The month with the shortest days is December (Average daylight: 8h and 24min).

  • Average sunshine in December: 3h and 2min

The month with the most sunshine is August (Average sunshine: 11h and 54min).
The months with the least sunshine are January and December (Average sunshine: 3h and 18min).

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Average sunshine days in December
Cocolalla, ID

Average sunshine days in December - Cocolalla, ID
  • Average sunshine days in December: 10.1 days

The month with the most sunshine days is August (22.2 days).
The month with the least sunshine days is March (8.4 days).

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Average UV index in December
Cocolalla, ID

Average UV index in December - Cocolalla, 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, November and December (UV index 1).

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Average cloud cover in December
Cocolalla, ID

Average cloud cover in December - Cocolalla, ID
  • Average cloud cover in December: 66

The months with the most cloud cover are January and December (Cloud cover 66).
The month with the least cloud cover is August (Cloud cover 14).

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Average visibility in December
Cocolalla, ID

Average visibility in December - Cocolalla, ID
  • Average visibility in December: 3mi

The months with the highest visibility are May, June, July, August and September (6mi).
The months with the lowest visibility are January, February and December (3mi).

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Cocolalla, Idaho, USA

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