December weather forecast
South Salt Lake, UT

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Weather in December

The first month of the winter, December, is still a cold month in South Salt Lake, Utah, with temperature in the range of an average low of 18.5°F (-7.5°C) and an average high of 32°F (0°C).

Temperature

The transition into December involves a decrease in the average high-temperature, falling from a chilly 44.1°F (6.7°C) in November to a cold 32°F (0°C). During the month of December, an average temperature of 18.5°F (-7.5°C) is noted during the nights in South Salt Lake, Utah.

Humidity

In South Salt Lake, the average relative humidity in December is 80%.

Rainfall

In South Salt Lake, Utah, in December, during 11 rainfall days, 2.2" (56mm) of precipitation is typically accumulated. In South Salt Lake, during the entire year, the rain falls for 120.5 days and collects up to 18.66" (474mm) of precipitation.

Snowfall

Months with snowfall are January through May, October through December. In South Salt Lake, Utah, in December, snow falls for 13 days, with typically accumulated 12.52" (318mm) of snow. In South Salt Lake, during the entire year, snow falls for 62.9 days and aggregates up to 59.69" (1516mm) of snow.

Daylight

With an average of 9h and 18min of daylight, December has the shortest days of the year.
On the first day of December, sunrise is at 7:32 am and sunset at 5:00 pm. On the last day of the month, sunrise is at 7:51 am and sunset at 5:10 pm MST.

Sunshine

In South Salt Lake, the average sunshine in December is 5.8h.

UV index

With an average maximum UV index of 1, December is the month with the lowest UV index in South Salt Lake. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV radiation for average individuals.
Note: A daily high UV index of 1 in December leads to these guidelines:
Babies, children, and individuals with sensitive skin should always have protection against extended sun exposure. The Sun's harshest UV rays are around midday; it's wise to seek shade and limit time outdoors. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck. Be cautious! The UV radiation from the Sun can be magnified almost twofold by snow reflection.
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Frequently asked questions

How cold is it in South Salt Lake in December?

The high-temperature, in December, in South Salt Lake, is 32°F (0°C), while the low-temperature averages to 18.5°F (-7.5°C).

What is the average humidity in December in South Salt Lake?

In South Salt Lake, Utah, the average relative humidity in December is 80%.

How many days does it rain in December in South Salt Lake?

In South Salt Lake, Utah, in December, during 11 rainfall days, 2.2" (56mm) of precipitation is typically accumulated.

How much does it snow in South Salt Lake in December?

In South Salt Lake, in December, during 13 snowfall days, 12.52" (318mm) of snow is typically accumulated.

What is the month with the shortest days in South Salt Lake?

December has the shortest days of the year, with an average of 9h and 18min of daylight.

What is the average length of the day in December in South Salt Lake?

The average day length in December in South Salt Lake, Utah, is 9h and 19min.

When is the sunrise / sunset in December in South Salt Lake?

In December, on the first day of the month, sunrise is at 7:32 am and sunset at 5:00 pm. On the last day of the month, in South Salt Lake, Utah, sunrise is at 7:51 am and sunset at 5:10 pm MST.

How many hours of sunshine does South Salt Lake have in December?

The average sunshine duration in December in South Salt Lake, Utah, is 5.8h.

When is the lowest UV index in South Salt Lake?

The month with the lowest UV index in South Salt Lake, Utah, is December, with an average maximum UV index of 1.

What is the UV index intensity in December in South Salt Lake?

In December, the average daily maximum UV index is 1. A UV Index reading of 2, and below, represents a minimal hazard to health from unsafe exposure to Sun's UV rays.
Average max. wind speed
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
South Salt Lake, UT

Average temperature in December - South Salt Lake, UT
  • Average high temperature in December: 32°F

The warmest month (with the highest average high temperature) is July (83.1°F).
The month with the lowest average high temperature is January (31.8°F).

  • Average low temperature in December: 18.5°F

The month with the highest average low temperature is July (59°F).
The coldest month (with the lowest average low temperature) is January (16.9°F).

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Average pressure in December
South Salt Lake, UT

Average pressure in December - South Salt Lake, UT
  • Average pressure in December: 30.22"Hg

The month with the highest atmospheric pressure is January (30.27"Hg).
The month with the lowest atmospheric pressure is June (29.87"Hg).

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Average wind speed in December
South Salt Lake, UT

Average wind speed in December - South Salt Lake, UT
  • Average wind speed in December: 5.2mph

The windiest month (with the highest average wind speed) is March (6.1mph).
The calmest month (with the lowest average wind speed) is January (4.7mph).

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Average humidity in December
South Salt Lake, UT

Average humidity in December - South Salt Lake, UT
  • Average humidity in December: 80%

The month with the highest relative humidity is January (85%).
The month with the lowest relative humidity is July (38%).

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Average rainfall in December
South Salt Lake, UT

Average rainfall in December - South Salt Lake, UT
  • Average rainfall in December: 2.2"

The wettest month (with the highest rainfall) is February (2.4").
The driest month (with the least rainfall) is June (0.67").

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Average rainfall days in December
South Salt Lake, UT

Average rainfall days in December - South Salt Lake, UT
  • Average rainfall days in December: 11 days

The month with the highest number of rainy days is April (13.9 days).
The month with the least rainy days is June (6.9 days).

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Average snowfall in December
South Salt Lake, UT

Average snowfall in December - South Salt Lake, UT
  • Average snowfall in December: 12.52"

The month with the highest snowfall is January (14.25").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in December
South Salt Lake, UT

Average snowfall days in December - South Salt Lake, UT
  • Average snowfall days in December: 13 days

The month with the highest number of snowfall days is January (13.8 days).
The months with the least snowfall days are June, July, August and September (0 days).

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Average daylight in December /
Average sunshine in December
South Salt Lake, UT

Average daylight in December / Average sunshine in December - South Salt Lake, UT
  • Average daylight in December: 9h and 2min

The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 18min).

  • Average sunshine in December: 5h and 5min

The month with the most sunshine is August (Average sunshine: 12h and 0min).
The month with the least sunshine is January (Average sunshine: 5h and 30min).

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Average sunshine days in December
South Salt Lake, UT

Average sunshine days in December - South Salt Lake, UT
  • Average sunshine days in December: 14.6 days

The month with the most sunshine days is June (20.8 days).
The month with the least sunshine days is February (10.5 days).

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Average UV index in December
South Salt Lake, UT

Average UV index in December - South Salt Lake, UT
  • Average UV index in December: 1

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

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Average cloud cover in December
South Salt Lake, UT

Average cloud cover in December - South Salt Lake, UT
  • Average cloud cover in December: 39

The month with the most cloud cover is February (Cloud cover 41).
The month with the least cloud cover is August (Cloud cover 10).

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Average visibility in December
South Salt Lake, UT

Average visibility in December - South Salt Lake, UT
  • Average visibility in December: 5mi

The months with the highest visibility are March, April, May, June, July, August, September, October and November (6mi).
The month with the lowest visibility is January (4mi).

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South Salt Lake, Utah, USA

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