December weather forecast
Garden Valley, ID

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Weather in December

December, the first month of the winter in Garden Valley, is also a subzero cold month, with temperature in the range of an average low of 19.4°F (-7°C) and an average high of 31.3°F (-0.4°C).

Temperature

In Garden Valley, Idaho, the lowest temperatures are generally noted in December, averaging a high of 31.3°F (-0.4°C) and a low of 19.4°F (-7°C).

Humidity

In December, the average relative humidity is 82%.

Rainfall

In Garden Valley, in December, it is raining for 5.9 days, with typically 2.44" (62mm) of accumulated precipitation. In Garden Valley, during the entire year, the rain falls for 103.4 days and collects up to 19.84" (504mm) of precipitation.

Snowfall

Months with snowfall are January through June, October through December. In Garden Valley, in December, snow falls for 14.4 days, with typically accumulated 17.32" (440mm) of snow. Throughout the year, in Garden Valley, there are 79.1 snowfall days, and 88.94" (2259mm) of snow is accumulated.

Daylight

With an average of 8h and 54min of daylight, December has the shortest days of the year in Garden Valley.
On the first day of the month, sunrise is at 7:59 am and sunset at 5:06 pm. On the last day of December, sunrise is at 8:18 am and sunset at 5:15 pm MST.

Sunshine

December has the least sunshine of the year, with an average of 5.2h of sunshine.

UV index

The average daily maximum UV index in December is 2. A UV Index of 2, and less, symbolizes a low threat to health from exposure to the Sun's UV radiation for the ordinary person.
Note: A typical high UV index of 2 in December suggests the following recommendations:
Protection from prolonged sun exposure is necessary for babies, children, and individuals with sensitive skin. Limiting exposure to the direct Sun during midday hours can help prevent harmful UV radiation effects. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat. Be alert! Nearly double the UV rays from the Sun can be reflected by snow.
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Frequently asked questions

What part of the year is the coldest in Garden Valley?

With average high and low temperatures of 31.3°F (-0.4°C) and 19.4°F (-7°C) respectively, December is Garden Valley's coldest month.

How cold is it in Garden Valley in December?

During December, Garden Valley experiences an average high-temperature of 31.3°F (-0.4°C) and a low-temperature of 19.4°F (-7°C).

What is the average humidity in December in Garden Valley?

In December, the average relative humidity is 82%.

How much does it rain in Garden Valley in December?

In December, in Garden Valley, the rain falls for 5.9 days. Throughout December, 2.44" (62mm) of precipitation is accumulated.

How much does it snow in Garden Valley in December?

In Garden Valley, in December, snow falls for 14.4 days, with typically accumulated 17.32" (440mm) of snow.

What is the month with the shortest days in Garden Valley?

With an average of 8h and 54min of daylight, December has the shortest days of the year in Garden Valley, Idaho.

What is the average length of the day in December in Garden Valley?

The average day length in December in Garden Valley, Idaho, is 8h and 57min.

When is the sunrise / sunset in December in Garden Valley?

In December, on the first day of the month, sunrise is at 7:59 am and sunset at 5:06 pm. On the last day of the month, in Garden Valley, Idaho, sunrise is at 8:18 am and sunset at 5:15 pm MST.

What is the month with the least sunshine in Garden Valley?

The month with the least sunshine is December, with an average of 5.2h of sunshine.

How many hours of sunshine does Garden Valley have in December?

In December, the average sunshine duration in Garden Valley, Idaho, is 5.2h.

What is the UV index intensity in December in Garden Valley?

The average daily maximum UV index in December in Garden Valley is 2. A UV Index reading of 2, and below, represents a low health risk 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
Garden Valley, ID

Average temperature in December - Garden Valley, ID
  • Average high temperature in December: 31.3°F

The warmest month (with the highest average high temperature) is July (86.5°F).
The month with the lowest average high temperature is December (31.3°F).

  • Average low temperature in December: 19.4°F

The month with the highest average low temperature is August (56.8°F).
The coldest month (with the lowest average low temperature) is December (19.4°F).

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Average pressure in December
Garden Valley, ID

Average pressure in December - Garden Valley, ID
  • Average pressure in December: 30.22"Hg

The month with the highest atmospheric pressure is January (30.25"Hg).
The months with the lowest atmospheric pressure are June and August (29.91"Hg).

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Average wind speed in December
Garden Valley, ID

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

The windiest month (with the highest average wind speed) is April (6.1mph).
The calmest month (with the lowest average wind speed) is January (4.3mph).

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Average humidity in December
Garden Valley, ID

Average humidity in December - Garden Valley, ID
  • Average humidity in December: 82%

The month with the highest relative humidity is January (85%).
The months with the lowest relative humidity are July and August (33%).

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Average rainfall in December
Garden Valley, ID

Average rainfall in December - Garden Valley, ID
  • Average rainfall in December: 2.44"

The wettest month (with the highest rainfall) is March (2.83").
The driest month (with the least rainfall) is July (0.31").

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Average rainfall days in December
Garden Valley, ID

Average rainfall days in December - Garden Valley, ID
  • Average rainfall days in December: 5.9 days

The month with the highest number of rainy days is May (14.2 days).
The month with the least rainy days is January (4.7 days).

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Average snowfall in December
Garden Valley, ID

Average snowfall in December - Garden Valley, ID
  • Average snowfall in December: 17.32"

The month with the highest snowfall is January (20.59").
The months with the least snowfall are July, August and September (0").

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Average snowfall days in December
Garden Valley, ID

Average snowfall days in December - Garden Valley, ID
  • Average snowfall days in December: 14.4 days

The month with the highest number of snowfall days is January (14.8 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
Garden Valley, ID

Average daylight in December / Average sunshine in December - Garden Valley, ID
  • Average daylight in December: 8h and 5min

The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 8h and 54min).

  • Average sunshine in December: 5h and 1min

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 12min).

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Average sunshine days in December
Garden Valley, ID

Average sunshine days in December - Garden Valley, ID
  • Average sunshine days in December: 15.8 days

The month with the most sunshine days is July (22.3 days).
The month with the least sunshine days is March (11.2 days).

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Average UV index in December
Garden Valley, ID

Average UV index in December - Garden Valley, ID
  • Average UV index in December: 2

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

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Average cloud cover in December
Garden Valley, ID

Average cloud cover in December - Garden Valley, ID
  • Average cloud cover in December: 45

The month with the most cloud cover is December (Cloud cover 45).
The months with the least cloud cover are July and August (Cloud cover 9).

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Average visibility in December
Garden Valley, ID

Average visibility in December - Garden Valley, ID
  • Average visibility in December: 5mi

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

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Garden Valley, Idaho, USA

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