December weather forecast
Spencer, ID

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Weather in December

December, the first month of the winter in Spencer, is still a freezing cold month, with an average temperature fluctuating between 22.3°F (-5.4°C) and 6.8°F (-14°C).

Temperature

In Spencer, December records the lowest average temperatures, peaking at 22.3°F (-5.4°C) and reaching a low of 6.8°F (-14°C).

Humidity

In December, the average relative humidity in Spencer, Idaho, is 92%.

Rainfall

In Spencer, Idaho, during December, the rain falls for 5.4 days and regularly aggregates up to 1.97" (50mm) of precipitation. Throughout the year, in Spencer, there are 106.1 rainfall days, and 20.83" (529mm) of precipitation is accumulated.

Snowfall

Months with snowfall in Spencer are January through July, September through December. In Spencer, in December, snow falls for 23 days, with typically accumulated 16.5" (419mm) of snow. In Spencer, during the entire year, snow falls for 138.1 days and aggregates up to 107.64" (2734mm) of snow.

Daylight

With an average of 8h and 54min of daylight, December has the shortest days of the year in Spencer, Idaho.
On the first day of the month, sunrise is at 7:45 am and sunset at 4:50 pm. On the last day of December, in Spencer, sunrise is at 8:04 am and sunset at 4:59 pm MST.

Sunshine

In December, the average sunshine is 4.2h.

UV index

January, February, 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 low health risk from exposure to the Sun's UV rays for average individuals.
Note: In December, the average maximum UV index of 1 translates into the following recommendations:
While most people can stay under the sun for an hour without burning, children must always be guarded against sun exposure. To avoid the Sun's strongest rays, limit exposure around the mid-day period. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage. Guard yourself! Snow reflection can almost double the UV radiation from the Sun.
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Frequently asked questions

What is the coldest month in Spencer?

December is the coldest month, with an average high-temperature of 22.3°F (-5.4°C) and an average low-temperature of 6.8°F (-14°C).

How cold is December in Spencer?

During December, Spencer experiences an average high-temperature of 22.3°F (-5.4°C) and a low-temperature of 6.8°F (-14°C).

What is the average humidity in December in Spencer?

In December, the average relative humidity in Spencer is 92%.

How many days does it rain in December in Spencer?

In Spencer, Idaho, during December, the rain falls for 5.4 days and regularly aggregates up to 1.97" (50mm) of precipitation.

How many days does it snow in December in Spencer?

In Spencer, in December, during 23 snowfall days, 16.5" (419mm) of snow is typically accumulated.

What is the month with the shortest days in Spencer?

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

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

In Spencer, Idaho, the average day length in December is 8h and 55min.

When is the sunrise / sunset in December in Spencer?

In December, on the first day of the month, sunrise is at 7:45 am and sunset at 4:50 pm. On the last day of the month, in Spencer, sunrise is at 8:04 am and sunset at 4:59 pm MST.

How long on average sun shines in December in Spencer?

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

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

The months with the lowest UV index in Spencer, Idaho, are January, February, November and December, with an average maximum UV index of 1.

How high is the UV index in December in Spencer?

The average daily maximum UV index in December in Spencer 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
Spencer, ID

Average temperature in December - Spencer, ID
  • Average high temperature in December: 22.3°F

The warmest month (with the highest average high temperature) is July (77.4°F).
The month with the lowest average high temperature is December (22.3°F).

  • Average low temperature in December: 6.8°F

The month with the highest average low temperature is August (46.6°F).
The coldest months (with the lowest average low temperature) are January and December (6.8°F).

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Average pressure in December
Spencer, ID

Average pressure in December - Spencer, ID
  • Average pressure in December: 30.24"Hg

The month with the highest atmospheric pressure is January (30.26"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).

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Average wind speed in December
Spencer, ID

Average wind speed in December - Spencer, ID
  • Average wind speed in December: 4.5mph

The windiest month (with the highest average wind speed) is June (6.3mph).
The calmest month (with the lowest average wind speed) is January (4.4mph).

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Average humidity in December
Spencer, ID

Average humidity in December - Spencer, ID
  • Average humidity in December: 92%

The months with the highest relative humidity are January and February (94%).
The month with the lowest relative humidity is August (47%).

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Average rainfall in December
Spencer, ID

Average rainfall in December - Spencer, ID
  • Average rainfall in December: 1.97"

The wettest month (with the highest rainfall) is February (2.64").
The driest month (with the least rainfall) is July (0.47").

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Average rainfall days in December
Spencer, ID

Average rainfall days in December - Spencer, ID
  • Average rainfall days in December: 5.4 days

The month with the highest number of rainy days is May (17 days).
The month with the least rainy days is January (3.8 days).

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Average snowfall in December
Spencer, ID

Average snowfall in December - Spencer, ID
  • Average snowfall in December: 16.5"

The month with the highest snowfall is January (19.84").
The month with the least snowfall is August (0").

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Average snowfall days in December
Spencer, ID

Average snowfall days in December - Spencer, ID
  • Average snowfall days in December: 23 days

The month with the highest number of snowfall days is December (23 days).
The month with the least snowfall days is August (0 days).

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

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

The month with the longest days is June (Average daylight: 15h and 30min).
The month with the shortest days is December (Average daylight: 8h and 54min).

  • Average sunshine in December: 4h and 1min

The month with the most sunshine is July (Average sunshine: 12h and 0min).
The month with the least sunshine is January (Average sunshine: 3h and 48min).

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Average sunshine days in December
Spencer, ID

Average sunshine days in December - Spencer, ID
  • Average sunshine days in December: 7.7 days

The month with the most sunshine days is July (21.2 days).
The month with the least sunshine days is February (5.9 days).

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Average UV index in December
Spencer, ID

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

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Average cloud cover in December
Spencer, ID

Average cloud cover in December - Spencer, ID
  • Average cloud cover in December: 61

The month with the most cloud cover is February (Cloud cover 67).
The month with the least cloud cover is July (Cloud cover 13).

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Average visibility in December
Spencer, ID

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

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 (3mi).

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Spencer, Idaho, USA

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