December weather forecast
Trenton, UT

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Weather in December

December, the first month of the winter in Trenton, is also a subzero cold month, with an average temperature varying between 28.6°F (-1.9°C) and 15.1°F (-9.4°C).

Temperature

The coldest temperatures occur during December, when averages reach a peak of 28.6°F (-1.9°C) and a low of 15.1°F (-9.4°C).

Humidity

In Trenton, the average relative humidity in December is 86%.

Rainfall

In Trenton, Utah, in December, during 8.2 rainfall days, 1.77" (45mm) of precipitation is typically accumulated. Throughout the year, there are 117.9 rainfall days, and 17.68" (449mm) of precipitation is accumulated.

Snowfall

January through May, September through December are months with snowfall. In December, in Trenton, it is snowing for 15.1 days. Throughout December, 11.73" (298mm) of snow is accumulated. In Trenton, during the entire year, snow falls for 71.1 days and aggregates up to 56.1" (1425mm) of snow.

Daylight

With an average of 9h and 12min of daylight, December has the shortest days of the year in Trenton.
On the first day of the month, sunrise is at 7:36 am and sunset at 4:57 pm. On the last day of December, sunrise is at 7:55 am and sunset at 5:06 pm MST.

Sunshine

The average sunshine in December is 5.2h.

UV index

The months with the lowest UV index in Trenton are January and December, with an average maximum UV index of 1. 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, a daily UV index of 1 turns into the following recommendations:
Babies, children, and those with sensitive skin should always avoid extended periods in the sun. Midday is when the Sun's radiation is strongest; avoid prolonged exposure during this time. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses. 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 Trenton?

The coldest month in Trenton, Utah, is December, with an average high-temperature of 28.6°F (-1.9°C) and an average low-temperature of 15.1°F (-9.4°C).

How cold is it in Trenton in December?

December temperatures in Trenton vary between a high-temperature of 28.6°F (-1.9°C) and a low-temperature of 15.1°F (-9.4°C). The average heat index (a.k.a. 'felt air temperature', 'feels like'), which takes the relative humidity and factors it into the air temperature reading, in July is computed to be 82.4°F (28°C).

What is the average humidity in December in Trenton?

In December, the average relative humidity in Trenton, Utah, is 86%.

How many days does it rain in December in Trenton?

In Trenton, Utah, in December, it is raining for 8.2 days, with typically 1.77" (45mm) of accumulated precipitation.

How much does it snow in Trenton in December?

In December, in Trenton, it is snowing for 15.1 days. Throughout December, 11.73" (298mm) of snow is accumulated.

What is the month with the shortest days in Trenton?

With an average of 9h and 12min of daylight, December has the shortest days of the year in Trenton.

How many hours of daylight does Trenton have in December?

In Trenton, the average day length in December is 9h and 11min.

What time are sunrise and sunset in December in Trenton?

On the first day of December in Trenton, Utah, sunrise is at 7:36 am and sunset at 4:57 pm. On the last day of the month, sunrise is at 7:55 am and sunset at 5:06 pm MST.

How long on average sun shines in December in Trenton?

In Trenton, Utah, the average sunshine duration in December is 5.2h.

When is the lowest UV index in Trenton?

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

What is the UV index reading in December in Trenton?

The average daily maximum UV index in December in Trenton is 1. A UV Index reading of 2, and below, represents a minimal hazard to health from unprotected exposure to 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
Trenton, UT

Average temperature in December - Trenton, UT
  • Average high temperature in December: 28.6°F

The warmest month (with the highest average high temperature) is July (82.8°F).
The month with the lowest average high temperature is December (28.6°F).

  • Average low temperature in December: 15.1°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 (13.6°F).

Average pressure in December
Trenton, UT

Average pressure in December - Trenton, UT
  • Average pressure in December: 30.25"Hg

The month with the highest atmospheric pressure is January (30.29"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).

Average wind speed in December
Trenton, UT

Average wind speed in December - Trenton, UT
  • Average wind speed in December: 4.3mph

The windiest months (with the highest average wind speed) are April, June and August (5.7mph).
The calmest month (with the lowest average wind speed) is January (4.2mph).

Average humidity in December
Trenton, UT

Average humidity in December - Trenton, UT
  • Average humidity in December: 86%

The month with the highest relative humidity is January (90%).
The month with the lowest relative humidity is August (38%).

Average rainfall in December
Trenton, UT

Average rainfall in December - Trenton, UT
  • Average rainfall in December: 1.77"

The wettest month (with the highest rainfall) is January (2.24").
The driest month (with the least rainfall) is July (0.63").

Average rainfall days in December
Trenton, UT

Average rainfall days in December - Trenton, UT
  • Average rainfall days in December: 8.2 days

The month with the highest number of rainy days is May (14.9 days).
The month with the least rainy days is November (6.7 days).

Average snowfall in December
Trenton, UT

Average snowfall in December - Trenton, UT
  • Average snowfall in December: 11.73"

The month with the highest snowfall is January (16.73").
The months with the least snowfall are June, July and August (0").

Average snowfall days in December
Trenton, UT

Average snowfall days in December - Trenton, UT
  • Average snowfall days in December: 15.1 days

The month with the highest number of snowfall days is January (15.9 days).
The months with the least snowfall days are July and August (0 days).

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

Average daylight in December / Average sunshine in December - Trenton, 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 1min

The months with the most sunshine are July and August (Average sunshine: 11h and 54min).
The month with the least sunshine is January (Average sunshine: 4h and 48min).

Average sunshine days in December
Trenton, UT

Average sunshine days in December - Trenton, UT
  • Average sunshine days in December: 13.5 days

The month with the most sunshine days is October (19.4 days).
The month with the least sunshine days is February (9.1 days).

Average UV index in December
Trenton, UT

Average UV index in December - Trenton, 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 and December (UV index 1).

Average cloud cover in December
Trenton, UT

Average cloud cover in December - Trenton, UT
  • Average cloud cover in December: 46

The month with the most cloud cover is February (Cloud cover 52).
The month with the least cloud cover is August (Cloud cover 10).

Average visibility in December
Trenton, UT

Average visibility in December - Trenton, UT
  • Average visibility in December: 4mi

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, February and December (4mi).

Trenton, Utah, USA

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