December weather forecast and climate
Salt Lake City, UT

A stunning autumn panorama of the Salt Lake City landscape in Utah
A stunning autumn panorama of the Salt Lake City landscape in Utah
The first month of the winter, December, is still a cold month in Salt Lake City, Utah, with average temperature fluctuating between 34.3°F (1.3°C) and 22.3°F (-5.4°C).

Temperature

In December, the average high-temperature drops, from a chilly 46.2°F (7.9°C) in November, to a wintry 34.3°F (1.3°C). In Salt Lake City, the average low-temperature is 22.3°F (-5.4°C).

Humidity

In Salt Lake City, the average relative humidity in December is 77%.

Rainfall

In Salt Lake City, Utah, during 6.3 rainfall days, 0.35" (9mm) of precipitation is typically accumulated. In Salt Lake City, Utah, during the entire year, the rain falls for 71.6 days and collects up to 4.21" (107mm) of precipitation.

Snowfall

Months with snowfall are January through April, October through December. In Salt Lake City, during December, snow falls for 5.1 days and regularly aggregates up to 1.65" (42mm) of snow. In Salt Lake City, during the entire year, snow falls for 25.8 days, and aggregates up to 10.39" (264mm) of snow.

Daylight

With an average of 9.3h of daylight, December has the shortest days of the year in Salt Lake City, Utah.

Sunshine

In Salt Lake City, the average sunshine is 6.1h.

UV index

Months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2. A UV Index reading of 2, and below, represents a minimal health vulnerability from unprotected exposure to the Sun's UV rays for ordinary individuals.
Note: The daily maximum UV index of 2 in December interpret into the following advice:
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. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.

What is the temperature in December in Salt Lake City?

In Salt Lake City, Utah, in December, the average high-temperature is 34.3°F (1.3°C), and the average low-temperature is 22.3°F (-5.4°C).

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

In Salt Lake City, the average relative humidity in December is 77%.

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

In December, in Salt Lake City, the rain falls for 6.3 days. Throughout December, 0.35" (9mm) of precipitation is accumulated.

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

In Salt Lake City, Utah, in December, during 5.1 snowfall days, 1.65" (42mm) of snow is typically accumulated.

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

December has the shortest days of the year in Salt Lake City, with an average of 9.3h of daylight.

How many hours of daylight does Salt Lake City have in December?

In Salt Lake City, Utah, the average length of the day in December is 9.3h.

How long on average sun shines in December in Salt Lake City?

The average sunshine in December is 6.1h.

What is the month with the lowest UV index in Salt Lake City?

January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Salt Lake City.

How high is the UV index in December in Salt Lake City?

The average daily maximum UV index in December is 2. A UV Index estimate of 2, and below, represents a minimal health vulnerability from the exposure to the Sun's UV radiation.
Average temperature in December - Salt Lake City, UT
  • Average high temperature in December: 34.3°F

The warmest month (with the highest average high temperature) is July (84.7°F).
The month with the lowest average high temperature is January (34°F).

  • Average low temperature in December: 22.3°F

The month with the highest average low temperature is July (61.3°F).
The coldest month (with the lowest average low temperature) is January (21°F).

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

The month with the highest atmospheric pressure is January (30.28").
The month with the lowest atmospheric pressure is June (29.87").

Average wind speed in December - Salt Lake City, UT
  • Average wind speed in December: 5.7mph

The windiest month (with the highest average wind speed) is March (6.6mph).
The calmest month (with the lowest average wind speed) is January (5mph).

Average humidity in December - Salt Lake City, UT
  • Average humidity in December: 77%

The month with the highest relative humidity is January (83%).
The month with the lowest relative humidity is July (37%).

Average rainfall in December - Salt Lake City, UT
  • Average rainfall in December: 0.35"

The wettest month (with the highest rainfall) is March (0.51").
The driest month (with the least rainfall) is August (0.2").

Average rainfall days in December - Salt Lake City, UT
  • Average rainfall days in December: 6.3 days

The month with the highest number of rainy days is April (8.9 days).
The month with the least rainy days is June (4 days).

Average snowfall in December - Salt Lake City, UT
  • Average snowfall in December: 1.65"

The month with the highest snowfall is January (2.68").
Months with the least snowfall are May, June, July, August and September (0").

Average snowfall days in December - Salt Lake City, UT
  • Average snowfall days in December: 5.1 days

Months with the highest number of snowfall days are January and February (6.6 days).
Months with the least snowfall days are June, July, August and September (0 days).

Average daylight in December / Average sunshine in December - Salt Lake City, UT
  • Average daylight in December: 9.3h

The month with the longest days is June (Average daylight: 15.1h).
The month with the shortest days is December (Average daylight: 9.3h).

  • Average sunshine in December: 6.1h

Months with the most sunshine are July and August (Average sunshine: 12h).
The month with the least sunshine is January (Average sunshine: 5.7h).

Average sunshine days in December - Salt Lake City, UT
  • Average sunshine days in December: 21.7 days

The month with the most sunshine days is June (23.8 days).
The month with the least sunshine days is February (19 days).

Average UV index in December - Salt Lake City, UT
  • Average UV index in December: 2

Months with the highest UV index are June, July and August (UV index 6).
Months with the lowest UV index are January, February, November and December (UV index 2).

Average cloud cover in December - Salt Lake City, UT
  • Average cloud cover in December: 37

Months with the most cloud cover are January and February (Cloud cover 38).
The month with the least cloud cover is August (Cloud cover 9).

Average visibility in December - Salt Lake City, UT
  • Average visibility in December: 6mi

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