Salt Lake City
Utah, USA
Long-term weather forecast
Long-term weather forecast

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 temperature in the range of an average high of 37.9°F (3.3°C) and an average low of 22.6°F (-5.2°C).

Temperature

In December, the average high-temperature decreases, from a frosty 49.5°F (9.7°C) in November, to a cold 37.9°F (3.3°C). In Salt Lake City, the average low-temperature is 22.6°F (-5.2°C).

Humidity

The most humid month in Salt Lake City is December, with an average relative humidity of 74.3%.

Rainfall

In Salt Lake City, in December, during 9.9 rainfall days, 1.4" (35.8mm) of precipitation is typically accumulated. Throughout the year, in Salt Lake City, there are 95.6 rainfall days, and 16.1" (408.9mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January through May, October through December. December is the month with the most snowfall. Snow falls for 8.2 days and accumulates 13.2" (335.3mm) of snow.

Daylight

December has the shortest days of the year, with an average of 9.3h of daylight.

Sunshine

With an average of 3.6h of sunshine, December has the least sunshine of the year in Salt Lake City, Utah.

UV index

Months with the lowest UV index in Salt Lake City, Utah, are January, November and December, with an average maximum UV index of 2. A UV Index estimate of 2, and below, represents a minimal health vulnerability from unprotected exposure to the Sun's UV rays for average individuals.
In December, the average maximum UV index of 2 translate into the following recommendations:
People with sensitive skin, children, and babies should always be protected from prolonged sun exposure. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.

What is the temperature in December in Salt Lake City?

In December, in Salt Lake City, the average high-temperature is 37.9°F (3.3°C), and the average low-temperature is 22.6°F (-5.2°C).

What is the most humid month in Salt Lake City?

The most humid month in Salt Lake City is December, with an average relative humidity of 74.3%.

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

In Salt Lake City, the average relative humidity in December is 74.3%.

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

In Salt Lake City, in December, during 9.9 rainfall days, 1.4" (35.8mm) of precipitation is typically accumulated.

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

In Salt Lake City, Utah, in December, snow falls for 8.2 days, with typically accumulated 13.2" (335.3mm) of snow.

When does it snow the most in Salt Lake City?

The month with the most snowfall in Salt Lake City is December when snow falls for 8.2 days and typically aggregates up to 13.2" (335.3mm) of snow.

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

The month with the shortest days in Salt Lake City, Utah, is December, 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.

What is the month with the least sunshine in Salt Lake City?

With an average of 3.6h of sunshine, December has the least sunshine of the year in Salt Lake City.

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

The average sunshine in December is 3.6h.

What are the months with the lowest UV index in Salt Lake City?

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

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

In Salt Lake City, Utah, the average daily maximum UV index in December is 2. A UV Index estimate of 2, and below, represents a low health threat from the exposure to the Sun's UV radiation.
Average temperature in December - Salt Lake City, UT
  • Average high temperature in December: 38°F

The warmest month (with the highest average high temperature) is July (92.6°F).
The month with the lowest average high temperature is January (37.4°F).

  • Average low temperature in December: 22.6°F

The month with the highest average low temperature is July (64.7°F).
The coldest month (with the lowest average low temperature) is January (21.6°F).

Average humidity in December - Salt Lake City, UT
  • Average humidity in December: 74.3%

The month with the highest relative humidity is December (74.3%).
The month with the lowest relative humidity is July (35.9%).

Average rainfall in December - Salt Lake City, UT
  • Average rainfall in December: 1.4"

Wettest months (with the highest rainfall) are April and May (2").
The driest month (with the lowest rainfall) is July (0.6").

Average rainfall days in December - Salt Lake City, UT
  • Average rainfall days in December: 9.9 days

The month with the highest number of rainy days is January (10.1 days).
The month with the lowest number of rainy days is July (4.4 days).

Average snowfall in December - Salt Lake City, UT
  • Average snowfall in December: 13.2"

The month with the highest snowfall is December (13.2").
Months with the lowest snowfall are June, July, August and September (0").

Average snowfall days in December - Salt Lake City, UT
  • Average snowfall days in December: 8.2 days

The month with the highest number of snowfall days is January (8.5 days).
Months with the lowest number of 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 shortest days is December (Average daylight: 9.3h).

  • Average sunshine in December: 3.6h

The month with most sunshine is July (Average sunshine: 12.3h).
The month with least sunshine is December (Average sunshine: 3.6h).

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

Months with the highest UV index are June and July (UV index 10).
Months with the lowest UV index are January, November and December (UV index 2).