December weather forecast
River Heights, UT

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Weather in December

The first month of the winter, December, is still a freezing cold month in River Heights, Utah, with an average temperature fluctuating between 28.8°F (-1.8°C) and 15.3°F (-9.3°C).

Temperature

January and December bring River Heights's lowest average temperatures, reaching a high of 28.8°F (-1.8°C).

Humidity

In River Heights, the average relative humidity in December is 85%.

Rainfall

In December, the rain falls for 11 days. Throughout December, 2.05" (52mm) of precipitation is accumulated. In River Heights, during the entire year, the rain falls for 122.8 days and collects up to 16.89" (429mm) of precipitation.

Snowfall

January through May, September through December are months with snowfall in River Heights. In River Heights, during December, snow falls for 16.3 days and regularly aggregates up to 12.91" (328mm) of snow. In River Heights, during the entire year, snow falls for 77.8 days and aggregates up to 58.86" (1495mm) of snow.

Daylight

December has the shortest days of the year in River Heights, with an average of 9h and 12min of daylight.
On the first day of December, sunrise is at 7:35 am and sunset at 4:57 pm. On the last day of the month, sunrise is at 7:54 am and sunset at 5:06 pm MST.

Sunshine

The average sunshine in December in River Heights, Utah, is 5.4h.

UV index

January, November and December, with an average maximum UV index of 1, are months with the lowest UV index in River Heights, Utah. A UV Index value of 2, and less, symbolizes a minimal health hazard from unprotected exposure to Sun's UV rays for the average person.
Note: The maximum UV index of 1 during December translates into these guidelines:
Extended exposure to the sun should always be avoided by children, infants, and those with sensitive skin. To prevent harmful UV exposure, minimize direct contact with the Sun around midday. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays. Be cautious! The UV radiation from the Sun can be magnified almost twofold by snow reflection.
Updated: Feb 14, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the coldest month in River Heights?

January and December bring River Heights's average lowest temperatures, reaching a high of 28.8°F (-1.8°C).

How cold is it in River Heights in December?

The average high-temperature, in December, in River Heights, is 28.8°F (-1.8°C), while the average low-temperature is 15.3°F (-9.3°C).

What is the average humidity in December in River Heights?

The average relative humidity in December in River Heights is 85%.

How many days does it rain in December in River Heights?

In River Heights, during December, the rain falls for 11 days and regularly aggregates up to 2.05" (52mm) of precipitation.

How many days does it snow in December in River Heights?

In December, in River Heights, it is snowing for 16.3 days. Throughout December, 12.91" (328mm) of snow is accumulated.

What is the month with the shortest days in River Heights?

The month with the shortest days in River Heights is December, with an average of 9h and 12min of daylight.

How many hours of daylight does River Heights have in December?

In River Heights, the average day length in December is 9h and 13min.

When is the sunrise / sunset in December in River Heights?

On the first day of December, sunrise is at 7:35 am and sunset at 4:57 pm. On the last day of the month, sunrise is at 7:54 am and sunset at 5:06 pm MST.

How many hours of sunshine does River Heights have in December?

In December, the average sunshine duration in River Heights, Utah, is 5.4h.

When is the lowest UV index in River Heights?

The months with the lowest UV index in River Heights, Utah, are January, November and December, with an average maximum UV index of 1.

What is the UV index intensity in December in River Heights?

The average daily maximum UV index in December is 1. A UV Index value of 2, and less, symbolizes a low health threat from unsafe exposure to Sun's UV rays.
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
River Heights, UT

Average temperature in December - River Heights, UT
  • Average high temperature in December: 28.8°F

The warmest month (with the highest average high temperature) is July (83.3°F).
The months with the lowest average high temperature are January and December (28.8°F).

  • Average low temperature in December: 15.3°F

The month with the highest average low temperature is July (55.4°F).
The coldest month (with the lowest average low temperature) is January (14°F).

Average pressure in December
River Heights, UT

Average pressure in December - River Heights, UT
  • Average pressure in December: 30.24"Hg

The month with the highest atmospheric pressure is January (30.29"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).

Average wind speed in December
River Heights, UT

Average wind speed in December - River Heights, UT
  • Average wind speed in December: 4.4mph

The windiest months (with the highest average wind speed) are April and June (5.8mph).
The calmest month (with the lowest average wind speed) is January (4mph).

Average humidity in December
River Heights, UT

Average humidity in December - River Heights, UT
  • Average humidity in December: 85%

The month with the highest relative humidity is January (89%).
The month with the lowest relative humidity is August (38%).

Average rainfall in December
River Heights, UT

Average rainfall in December - River Heights, UT
  • Average rainfall in December: 2.05"

The wettest month (with the highest rainfall) is January (2.36").
The driest month (with the least rainfall) is July (0.43").

Average rainfall days in December
River Heights, UT

Average rainfall days in December - River Heights, UT
  • Average rainfall days in December: 11 days

The month with the highest number of rainy days is April (16.1 days).
The month with the least rainy days is August (6 days).

Average snowfall in December
River Heights, UT

Average snowfall in December - River Heights, UT
  • Average snowfall in December: 12.91"

The month with the highest snowfall is January (16.18").
The months with the least snowfall are June, July and August (0").

Average snowfall days in December
River Heights, UT

Average snowfall days in December - River Heights, UT
  • Average snowfall days in December: 16.3 days

The month with the highest number of snowfall days is January (17.2 days).
The months with the least snowfall days are June, July and August (0 days).

Average daylight in December /
Average sunshine in December
River Heights, UT

Average daylight in December / Average sunshine in December - River Heights, UT
  • Average daylight in December: 9h and 1min

The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).

  • Average sunshine in December: 5h and 2min

The month with the most sunshine is July (Average sunshine: 12h and 0min).
The month with the least sunshine is January (Average sunshine: 4h and 54min).

Average sunshine days in December
River Heights, UT

Average sunshine days in December - River Heights, UT
  • Average sunshine days in December: 11.6 days

The month with the most sunshine days is June (21.6 days).
The month with the least sunshine days is February (7.8 days).

Average UV index in December
River Heights, UT

Average UV index in December - River Heights, UT
  • Average UV index in December: 1

The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, November and December (UV index 1).

Average cloud cover in December
River Heights, UT

Average cloud cover in December - River Heights, UT
  • Average cloud cover in December: 45

The month with the most cloud cover is February (Cloud cover 49).
The month with the least cloud cover is August (Cloud cover 10).

Average visibility in December
River Heights, UT

Average visibility in December - River Heights, UT
  • Average visibility in December: 5mi

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

River Heights, Utah, USA

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