December weather forecast
Glencoe, ID

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Weather in December

December, the first month of the winter in Glencoe, is also a subzero cold month, with an average temperature fluctuating between 9.9°F (-12.3°C) and 25.5°F (-3.6°C).

Temperature

December is the month that records the lowest temperatures, with averages ranging from a high of 25.5°F (-3.6°C) to a low of 9.9°F (-12.3°C).

Humidity

The average relative humidity in December in Glencoe is 89%.

Rainfall

In December, the rain falls for 5.5 days. Throughout December, 1.22" (31mm) of precipitation is accumulated. Throughout the year, in Glencoe, there are 105.7 rainfall days, and 16.69" (424mm) of precipitation is accumulated.

Snowfall

January through June, September through December are months with snowfall in Glencoe. In Glencoe, in December, during 18.5 snowfall days, 9.09" (231mm) of snow is typically accumulated. In Glencoe, during the entire year, snow falls for 104.6 days and aggregates up to 63.58" (1615mm) of snow.

Daylight

With an average of 9h and 12min of daylight, December has the shortest days of the year.
On the first day of the month, sunrise is at 7:34 am and sunset at 4:55 pm. On the last day of December, sunrise is at 7:53 am and sunset at 5:04 pm MST.

Sunshine

In Glencoe, the average sunshine in December is 4.6h.

UV index

January, November and December, with an average maximum UV index of 1, are months with the lowest UV index. A UV Index of 2, and less, symbolizes a minimal health vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: The UV index of 1 during December translates into the following guidance:
Most people can stay in the Sun for up to 1 hour without burning, apart from children that always must be protected from sun exposure. Avoid the Sun's strongest UV rays by seeking shade and limiting exposure during midday. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection. Watch out! The Sun's UV radiation can be nearly magnified twofold due to snow reflection.
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Frequently asked questions

What time of the year is the coldest in Glencoe?

December proves to be the coldest month in Glencoe, Idaho, recording an average maximum temperature of 25.5°F (-3.6°C) and a minimum temperature of 9.9°F (-12.3°C).

How cold is it in Glencoe in December?

In Glencoe, 25.5°F (-3.6°C) is the average high-temperature and 9.9°F (-12.3°C) is the average low-temperature during December.

What is the average humidity in December in Glencoe?

In Glencoe, the average relative humidity in December is 89%.

How much does it rain in Glencoe in December?

In Glencoe, in December, it is raining for 5.5 days, with typically 1.22" (31mm) of accumulated precipitation.

How many days does it snow in December in Glencoe?

In Glencoe, during December, snow falls for 18.5 days and regularly aggregates up to 9.09" (231mm) of snow.

What is the month with the shortest days in Glencoe?

December has the shortest days of the year in Glencoe, Idaho, with an average of 9h and 12min of daylight.

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

In Glencoe, Idaho, the average day length in December is 9h and 11min.

What time are sunrise and sunset in December in Glencoe?

On the first day of December in Glencoe, sunrise is at 7:34 am and sunset at 4:55 pm. On the last day of the month, sunrise is at 7:53 am and sunset at 5:04 pm MST.

How many hours of sunshine does Glencoe have in December?

In Glencoe, Idaho, the average sunshine duration in December is 4.6h.

When is the lowest UV index in Glencoe?

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

What is the UV index reading in December in Glencoe?

In Glencoe, the average daily maximum UV index in December is 1. A UV Index estimate of 2, and below, represents a minimal hazard to health 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
Glencoe, ID

Average temperature in December - Glencoe, ID
  • Average high temperature in December: 25.5°F

The warmest month (with the highest average high temperature) is July (79.2°F).
The month with the lowest average high temperature is December (25.5°F).

  • Average low temperature in December: 9.9°F

The month with the highest average low temperature is August (49.8°F).
The coldest month (with the lowest average low temperature) is January (8.4°F).

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Average pressure in December
Glencoe, ID

Average pressure in December - Glencoe, ID
  • Average pressure in December: 30.25"Hg

The month with the highest atmospheric pressure is January (30.29"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).

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Average wind speed in December
Glencoe, ID

Average wind speed in December - Glencoe, ID
  • Average wind speed in December: 4.4mph

The windiest month (with the highest average wind speed) is June (6mph).
The calmest month (with the lowest average wind speed) is January (4.3mph).

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Average humidity in December
Glencoe, ID

Average humidity in December - Glencoe, ID
  • Average humidity in December: 89%

The month with the highest relative humidity is January (92%).
The month with the lowest relative humidity is August (42%).

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Average rainfall in December
Glencoe, ID

Average rainfall in December - Glencoe, ID
  • Average rainfall in December: 1.22"

The wettest month (with the highest rainfall) is May (2.28").
The driest month (with the least rainfall) is July (0.91").

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Average rainfall days in December
Glencoe, ID

Average rainfall days in December - Glencoe, ID
  • Average rainfall days in December: 5.5 days

The month with the highest number of rainy days is May (15.3 days).
The month with the least rainy days is January (4.3 days).

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Average snowfall in December
Glencoe, ID

Average snowfall in December - Glencoe, ID
  • Average snowfall in December: 9.09"

The month with the highest snowfall is March (12.17").
The months with the least snowfall are July and August (0").

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Average snowfall days in December
Glencoe, ID

Average snowfall days in December - Glencoe, ID
  • Average snowfall days in December: 18.5 days

The month with the highest number of snowfall days is February (20 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
Glencoe, ID

Average daylight in December / Average sunshine in December - Glencoe, ID
  • Average daylight in December: 9h and 1min

The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).

  • Average sunshine in December: 4h and 4min

The months with the most sunshine are July and August (Average sunshine: 11h and 48min).
The month with the least sunshine is January (Average sunshine: 4h and 18min).

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Average sunshine days in December
Glencoe, ID

Average sunshine days in December - Glencoe, ID
  • Average sunshine days in December: 12.6 days

The month with the most sunshine days is July (18.4 days).
The month with the least sunshine days is February (8.6 days).

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Average UV index in December
Glencoe, ID

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

The months with the highest UV index are June and July (UV index 5).
The months with the lowest UV index are January, November and December (UV index 1).

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Average cloud cover in December
Glencoe, ID

Average cloud cover in December - Glencoe, ID
  • Average cloud cover in December: 56

The month with the most cloud cover is February (Cloud cover 63).
The months with the least cloud cover are July and August (Cloud cover 13).

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Average visibility in December
Glencoe, ID

Average visibility in December - Glencoe, 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 and February (3mi).

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Glencoe, Idaho, USA

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