December weather forecast
Magna, UT

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Weather in December

December, the first month of the winter in Magna, is also an icy month, with temperature in the range of an average low of 21.9°F (-5.6°C) and an average high of 34.2°F (1.2°C).

Temperature

The commencement of December indicates a shift in the average high-temperature, receding from November's chilly 46.2°F (7.9°C) to a cold 34.2°F (1.2°C). In December, Magna encounters an average low-temperature of 21.9°F (-5.6°C) during the night.

Humidity

The average relative humidity in December is 78%.

Rainfall

December is the month with the most rainfall in Magna. Rain falls for 9 days and accumulates 1.61" (41mm) of precipitation.

Snowfall

Months with snowfall in Magna are January through April, October through December. In Magna, Utah, during December, snow falls for 10 days and regularly aggregates up to 7.28" (185mm) of snow. Throughout the year, in Magna, Utah, there are 44.4 snowfall days, and 31.42" (798mm) of snow is accumulated.

Daylight

December has the shortest days of the year in Magna, with an average of 9h and 18min of daylight.
On the first day of the month, sunrise is at 7:33 am and sunset at 5:01 pm. On the last day of December, in Magna, sunrise is at 7:52 am and sunset at 5:11 pm MST.

Sunshine

In December, the average sunshine is 6h.

UV index

January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Magna. A UV Index reading of 2, and below, represents a low threat to health from unsafe exposure to UV radiation for average individuals.
Note: In December, an average UV index of 2 transforms into the following instructions:
Most people face no serious problems with extended sun exposure, but those with fair skin, infants, and children always need protection. Direct Sun exposure should be minimized especially during midday when radiation is most intense. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat. On your guard! Snow's reflection can almost double the intensity of the Sun's UV radiation.
Updated: Feb 14, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How cold is December in Magna?

The high-temperature, in December, in Magna, records 34.2°F (1.2°C), while the low-temperature is 21.9°F (-5.6°C).

What is the average humidity in December in Magna?

In Magna, Utah, the average relative humidity in December is 78%.

What is the wettest month in Magna?

December is the month with the most rainfall. Rain falls for 9 days and accumulates 1.61" (41mm) of precipitation.

How many days does it rain in December in Magna?

In Magna, Utah, during December, the rain falls for 9 days and regularly aggregates up to 1.61" (41mm) of precipitation.

How much does it snow in Magna in December?

In Magna, Utah, during December, snow falls for 10 days and regularly aggregates up to 7.28" (185mm) of snow.

What is the month with the shortest days in Magna?

December has the shortest days of the year in Magna, with an average of 9h and 18min of daylight.

What is the average length of the day in December in Magna?

In Magna, Utah, the average day length in December is 9h and 19min.

When is the sunrise / sunset in December in Magna?

In December, on the first day of the month, sunrise is at 7:33 am and sunset at 5:01 pm. On the last day of the month, in Magna, sunrise is at 7:52 am and sunset at 5:11 pm MST.

How many hours of sunshine does Magna have in December?

In December, the average sunshine duration in Magna, Utah, is 6h.

What are the months with the lowest UV index in Magna?

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

What is the UV index intensity in December in Magna?

In December, the average daily maximum UV index in Magna is 2. A UV Index estimate of 2, and below, represents a minimal hazard to health from exposure to the Sun's UV radiation.
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
Magna, UT

Average temperature in December - Magna, UT
  • Average high temperature in December: 34.2°F

The warmest month (with the highest average high temperature) is July (85.8°F).
The month with the lowest average high temperature is January (33.8°F).

  • Average low temperature in December: 21.9°F

The month with the highest average low temperature is July (62.2°F).
The coldest month (with the lowest average low temperature) is January (20.1°F).

Average pressure in December
Magna, UT

Average pressure in December - Magna, 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
Magna, UT

Average wind speed in December - Magna, UT
  • Average wind speed in December: 5.8mph

The windiest month (with the highest average wind speed) is March (6.7mph).
The calmest month (with the lowest average wind speed) is January (5.1mph).

Average humidity in December
Magna, UT

Average humidity in December - Magna, UT
  • Average humidity in December: 78%

The month with the highest relative humidity is January (84%).
The month with the lowest relative humidity is July (36%).

Average rainfall in December
Magna, UT

Average rainfall in December - Magna, UT
  • Average rainfall in December: 1.61"

The wettest month (with the highest rainfall) is December (1.61").
The driest month (with the least rainfall) is June (0.35").

Average rainfall days in December
Magna, UT

Average rainfall days in December - Magna, UT
  • Average rainfall days in December: 9 days

The month with the highest number of rainy days is April (12.2 days).
The month with the least rainy days is June (4.6 days).

Average snowfall in December
Magna, UT

Average snowfall in December - Magna, UT
  • Average snowfall in December: 7.28"

The month with the highest snowfall is January (8.15").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days in December
Magna, UT

Average snowfall days in December - Magna, UT
  • Average snowfall days in December: 10 days

The month with the highest number of snowfall days is January (11 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

Average daylight in December /
Average sunshine in December
Magna, UT

Average daylight in December / Average sunshine in December - Magna, UT
  • Average daylight in December: 9h and 2min

The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 18min).

  • Average sunshine in December: 6h and 0min

The month with the most sunshine is August (Average sunshine: 12h and 0min).
The month with the least sunshine is January (Average sunshine: 5h and 36min).

Average sunshine days in December
Magna, UT

Average sunshine days in December - Magna, UT
  • Average sunshine days in December: 16.6 days

The month with the most sunshine days is June (23.6 days).
The month with the least sunshine days is February (13.6 days).

Average UV index in December
Magna, UT

Average UV index in December - Magna, 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
Magna, UT

Average cloud cover in December - Magna, UT
  • Average cloud cover in December: 37

The months with the most cloud cover are January and February (Cloud cover 39).
The month with the least cloud cover is August (Cloud cover 10).

Average visibility in December
Magna, UT

Average visibility in December - Magna, 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).

Magna, Utah, USA

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