December weather forecastSalt Lake City, UT
December
Weather in December
In December, winter completely sets in Salt Lake City, Utah. The city experiences cold temperatures similar to January, indicating the full circle of the year's weather pattern. The blanket of snow combined with festive decorations create a magical ambiance. Despite the cold, the city buzzes with activities - holiday markets, winter sports, and Christmas festivals. Outdoor ice-skating rinks and skiing resorts open their doors, offering winter entertainment for residents and tourists alike.Temperature
December brings a drop in Salt Lake City's average high-temperature, falling from a chilly 46.2°F (7.9°C) in November to a cold 34.3°F (1.3°C). An average low-temperature of 22.3°F (-5.4°C) is observed during the December nights.Humidity
The average relative humidity in December is 77%.Rainfall
In Salt Lake City, in December, it is raining for 6.3 days, with typically 0.35" (9mm) of accumulated precipitation. In Salt Lake City, during the entire year, the rain falls for 71.6 days and collects up to 4.21" (107mm) of precipitation.Snowfall
January through April, October through December are months with snowfall. In Salt Lake City, in December, during 5.1 snowfall days, 1.65" (42mm) of snow is typically accumulated. 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 9h and 18min of daylight, December has the shortest days of the year.On the first day of the month, sunrise is at 7:33 am and sunset at 5:00 pm. On the last day of December, sunrise is at 7:51 am and sunset at 5:10 pm MST.
Sunshine
The average sunshine in December 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 of 2, and less, symbolizes a minimal health vulnerability from unsafe exposure to UV radiation for the average person.Note: The UV index of 2 during December translates into the following guidance:
Despite most people tolerating extended sun exposure, it is critical to always protect those with sensitive skin, infants, and children. UV radiation is strongest from the Sun during midday; protect yourself by staying in shaded areas. Always opt for UVA and UVB-resistant sunglasses on radiant days. Be mindful! The reflection from snow can increase the Sun's UV radiation nearly twice.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
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"Hg
The month with the highest atmospheric pressure is January (30.28"Hg).
The month with the lowest atmospheric pressure is June (29.87"Hg).
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").
The 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
The months with the highest number of snowfall days are January and February (6.6 days).
The 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: 9h and 18min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in December: 6h and 6min
The months with the most sunshine are July and August (Average sunshine: 12h and 0min).
The month with the least sunshine is January (Average sunshine: 5h and 42min).
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
The months with the highest UV index are June, July and August (UV index 6).
The 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
The 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
The 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).
