December weather forecast
Mapleton, UT

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Weather in December

December, the first month of the winter in Mapleton, is still a cold month, with an average temperature varying between 32.4°F (0.2°C) and 16.2°F (-8.8°C).

Temperature

December, known for its average high temperature of 32.4°F (0.2°C) and an average low temperature of 16.2°F (-8.8°C), is the coldest month.

Humidity

In December, the average relative humidity is 80%.

Rainfall

The months with the most rainfall are January and December, with an average 1.46" (37mm) of precipitation.

Snowfall

Months with snowfall are January through May, October through December. In Mapleton, during December, snow falls for 12.2 days and regularly aggregates up to 6.77" (172mm) of snow. Throughout the year, there are 54.1 snowfall days, and 33.5" (851mm) of snow is accumulated.

Daylight

December has the shortest days of the year, with an average of 9h and 24min of daylight.
On the first day of December, sunrise is at 7:30 am and sunset at 5:01 pm. On the last day of the month, sunrise is at 7:48 am and sunset at 5:10 pm MST.

Sunshine

The average sunshine in December is 5.9h.

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 low threat to health from exposure to the Sun's UV radiation for the ordinary person.
Note: In December, a daily UV index of 2 turns into the following recommendations:
Extended sun exposure is not an issue for the majority. Children, infants, and fair-skinned individuals always need to be protected. The best time to avoid the Sun's harmful UV radiation is during midday when it's most potent. Experience reduced UV exposure by about half when donning a wide-brim hat. Be cautious! The UV radiation from the Sun can be magnified almost twofold by snow reflection.
Updated: Jun 12, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What month is the coldest?

With its average high temperature of 32.4°F (0.2°C) and a low of 16.2°F (-8.8°C), December is regarded as the coldest month in Mapleton.

How cold is it in December?

In December, the average high-temperature and low-temperature are 32.4°F (0.2°C) and 16.2°F (-8.8°C) respectively. The average heat index (a.k.a. 'apparent temperature', 'feels like'), which combines relative humidity and air temperature, in August is estimated at 82.4°F (28°C).

What is the average humidity in December?

In December, the average relative humidity is 80%.

What is the rainiest month in Mapleton?

The wettest months are January and December, with an average 1.46" (37mm) of rainfall.

How many days does it rain in December?

In Mapleton, during December, the rain falls for 10.1 days and regularly aggregates up to 1.46" (37mm) of precipitation.

How many days does it snow in December?

In Mapleton, in December, snow falls for 12.2 days, with typically accumulated 6.77" (172mm) of snow.

What is the month with the shortest days in Mapleton?

The month with the shortest days is December, with an average of 9h and 24min of daylight.

What is the average length of the day in December?

In Mapleton, the average day length in December is 9h and 22min.

When are sunrise and sunset in December in Mapleton?

In December, on the first day of the month, sunrise is at 7:30 am and sunset at 5:01 pm. On the last day of the month, sunrise is at 7:48 am and sunset at 5:10 pm MST.

How many hours of sunshine does Mapleton have in December?

In Mapleton, the average sunshine duration in December is 5.9h.

When is the lowest UV index?

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

What is the UV index intensity in December?

The average daily maximum UV index in December is 2. A UV Index estimate of 2, and below, represents a minimal hazard to health 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
Mapleton, UT

Average temperature in December - Mapleton, UT
  • Average high temperature in December: 32.4°F

The warmest month (with the highest average high temperature) is July (85.5°F).
The month with the lowest average high temperature is December (32.4°F).

  • Average low temperature in December: 16.2°F

The month with the highest average low temperature is July (55.9°F).
The coldest month (with the lowest average low temperature) is January (14.4°F).

Average pressure in December
Mapleton, UT

Average pressure in December - Mapleton, UT
  • Average pressure in December: 30.21"Hg

The month with the highest atmospheric pressure is January (30.27"Hg).
The month with the lowest atmospheric pressure is June (29.86"Hg).

Average wind speed in December
Mapleton, UT

Average wind speed in December - Mapleton, UT
  • Average wind speed in December: 4.8mph

The windiest month (with the highest average wind speed) is June (5.9mph).
The calmest month (with the lowest average wind speed) is January (4.5mph).

Average humidity in December
Mapleton, UT

Average humidity in December - Mapleton, UT
  • Average humidity in December: 80%

The month with the highest relative humidity is January (85%).
The month with the lowest relative humidity is July (39%).

Average rainfall in December
Mapleton, UT

Average rainfall in December - Mapleton, UT
  • Average rainfall in December: 1.46"

The wettest months (with the highest rainfall) are January and December (1.46").
The driest month (with the least rainfall) is August (0.51").

Average rainfall days in December
Mapleton, UT

Average rainfall days in December - Mapleton, UT
  • Average rainfall days in December: 10.1 days

The month with the highest number of rainy days is March (13.3 days).
The month with the least rainy days is June (6 days).

Average snowfall in December
Mapleton, UT

Average snowfall in December - Mapleton, UT
  • Average snowfall in December: 6.77"

The month with the highest snowfall is January (8.66").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in December
Mapleton, UT

Average snowfall days in December - Mapleton, UT
  • Average snowfall days in December: 12.2 days

The month with the highest number of snowfall days is December (12.2 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in December / Average sunshine in December - Mapleton, 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 24min).

  • Average sunshine in December: 5h and 5min

The month with the most sunshine is August (Average sunshine: 11h and 54min).
The month with the least sunshine is January (Average sunshine: 5h and 36min).

Average sunshine days in December
Mapleton, UT

Average sunshine days in December - Mapleton, UT
  • Average sunshine days in December: 15.1 days

The month with the most sunshine days is June (21.3 days).
The month with the least sunshine days is February (10.9 days).

Average UV index in December
Mapleton, UT

Average UV index in December - Mapleton, UT
  • Average UV index in December: 2

The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).

Average cloud cover in December
Mapleton, UT

Average cloud cover in December - Mapleton, UT
  • Average cloud cover in December: 38

The month with the most cloud cover is February (Cloud cover 40).
The month with the least cloud cover is August (Cloud cover 10).

Average visibility in December
Mapleton, UT

Average visibility in December - Mapleton, UT
  • Average visibility in December: 5mi

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

Mapleton, Utah, USA

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