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 ranging between min 22.3°F (-5.4°C) and max 34.3°F (1.3°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). The average low-temperature, in Salt Lake City, is 22.3°F (-5.4°C).

Humidity

The average relative humidity in December is 77%.

Rainfall

In Salt Lake City, it is raining for 6.3 days, with typically 0.35" (9mm) of accumulated precipitation. Throughout the year, in Salt Lake City, Utah, there are 71.6 rainfall days, and 4.21" (107mm) of precipitation is accumulated.

Snowfall

January through April, October through December are months with snowfall in Salt Lake City. In Salt Lake City, snow falls for 5.1 days, with typically accumulated 1.65" (42mm) of snow. Throughout the year, in Salt Lake City, there are 25.8 snowfall days, and 10.39" (264mm) of snow is accumulated.

Daylight

The month with the shortest days is December, with an average of 9.3h of daylight.

Sunshine

In December, the average sunshine is 6.1h.

UV index

January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index reading of 2, and below, represents a minimal health hazard from unprotected exposure to the Sun's UV rays for average individuals.
Note: 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. 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. 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?

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

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

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

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

In Salt Lake City, during December, the rain falls for 6.3 days and regularly aggregates up to 0.35" (9mm) of precipitation.

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

In Salt Lake City, during December, snow falls for 5.1 days and regularly aggregates up to 1.65" (42mm) 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.

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

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

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

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

When is the lowest UV index in Salt Lake City?

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

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

The average daily maximum UV index in December in Salt Lake City, Utah, is 2. A UV Index of 2, and less, symbolizes a low health risk from unsafe exposure to the Sun's UV rays.
Average temperature in December - Salt Lake City, UT
  • Average high temperature in December: 1.3°C

The warmest month (with the highest average high temperature) is July (29.3°C).
The month with the lowest average high temperature is January (1.1°C).

  • Average low temperature in December: -5.4°C

The month with the highest average low temperature is July (16.3°C).
The coldest month (with the lowest average low temperature) is January (-6.1°C).

Average pressure in December - Salt Lake City, UT
  • Average pressure in December: 1023.4mbar

The month with the highest atmospheric pressure is January (1025.4mbar).
The month with the lowest atmospheric pressure is June (1011.6mbar).

Average wind speed in December - Salt Lake City, UT
  • Average wind speed in December: 9.1km/h

The windiest month (with the highest average wind speed) is March (10.6km/h).
The calmest month (with the lowest average wind speed) is January (8km/h).

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: 9mm

The wettest month (with the highest rainfall) is March (13mm).
The driest month (with the least rainfall) is August (5mm).

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: 42mm

The month with the highest snowfall is January (68mm).
Months with the least snowfall are May, June, July, August and September (0mm).

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 visibility in December - Salt Lake City, UT
  • Average visibility in December: 9km

Months with the highest visibility are March, April, May, June, July, August, September, October and November (10km).
The month with the lowest visibility is January (8km).