December weather forecast
Alton, UT

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Weather in December

Alton in December is the epitome of a winter wonderland, where the city is elegantly veiled under the snow's white mantle. The climatological data shows a stark drop in temperatures from November. With the highest snowfall of 14.06" (357mm) in the year, December marks itself as the coldest month in Alton. As the days get shorter, the city lights up with holiday decorations and celebrations, capturing the beautifully tranquil spirit of winter. Despite the cold, the festive warmth blankets the city, leaving everyone in anticipation of a new year.

Temperature

In Alton, Utah, the lowest average temperatures are observed in December, with a high of 32.9°F (0.5°C) and a low of 17.2°F (-8.2°C).

Humidity

In December, the average relative humidity is 75%.

Rainfall

In Alton, in December, during 3.9 rainfall days, 1.81" (46mm) of precipitation is typically accumulated. Throughout the year, in Alton, there are 84.8 rainfall days, and 22.05" (560mm) of precipitation is accumulated.

Snowfall

January through May, September through December are months with snowfall. The month with the most snowfall is December, when snow falls for 12.5 days and typically aggregates up to 14.06" (357mm) of snow.

Daylight

The month with the shortest days is December, with an average of 9h and 36min of daylight.
On the first day of December in Alton, sunrise is at 7:26 am and sunset at 5:12 pm. On the last day of the month, sunrise is at 7:44 am and sunset at 5:22 pm MST.

Sunshine

January and December, with an average of 5.8h of sunshine, are months with the least sunshine.

UV index

January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV rays for ordinary individuals.
Note: The maximum daily UV index of 2 in December converts into the following recommendations:
While most can endure approximately an hour in the sun without burning, children always require protection from sunlight. Limiting exposure to the direct Sun during midday hours can help prevent harmful UV radiation effects. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation. Take heed! The reflection of snow can intensify the Sun's UV radiation nearly double.
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Frequently asked questions

What is the coldest month in Alton?

December, recording an average high temperature of 32.9°F (0.5°C) and a low temperature of 17.2°F (-8.2°C), is Alton's coldest month.

How cold is December in Alton?

The high-temperature, in December, in Alton, is 32.9°F (0.5°C), while the low-temperature averages to 17.2°F (-8.2°C).

What is the average humidity in December in Alton?

In Alton, the average relative humidity in December is 75%.

How many days does it rain in December in Alton?

In December, in Alton, Utah, the rain falls for 3.9 days. Throughout December, 1.81" (46mm) of precipitation is accumulated.

When does it snow the most in Alton?

December is the month with the most snowfall. Snow falls for 12.5 days and accumulates 14.06" (357mm) of snow.

How much does it snow in Alton in December?

In Alton, Utah, in December, during 12.5 snowfall days, 14.06" (357mm) of snow is typically accumulated.

What is the month with the shortest days in Alton?

December has the shortest days of the year in Alton, Utah, with an average of 9h and 36min of daylight.

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

In December, the average day length in Alton, Utah, is 9h and 38min.

When are sunrise and sunset in December in Alton?

In December, on the first day of the month, sunrise is at 7:26 am and sunset at 5:12 pm. On the last day of the month, in Alton, Utah, sunrise is at 7:44 am and sunset at 5:22 pm MST.

What is the month with the least sunshine in Alton?

January and December, with an average of 5.8h of sunshine, are months with the least sunshine in Alton.

How long on average sun shines in December in Alton?

In December, the average sunshine duration in Alton is 5.8h.

When is the lowest UV index in Alton?

January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Alton.

How high is the UV index in December in Alton?

The average daily maximum UV index in December in Alton is 2. 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
Alton, UT

Average temperature in December - Alton, UT
  • Average high temperature in December: 32.9°F

The warmest month (with the highest average high temperature) is July (77.9°F).
The month with the lowest average high temperature is December (32.9°F).

  • Average low temperature in December: 17.2°F

The month with the highest average low temperature is July (55.9°F).
The coldest month (with the lowest average low temperature) is December (17.2°F).

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Average pressure in December
Alton, UT

Average pressure in December - Alton, UT
  • Average pressure in December: 30.15"Hg

The month with the highest atmospheric pressure is January (30.2"Hg).
The month with the lowest atmospheric pressure is June (29.84"Hg).

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Average wind speed in December
Alton, UT

Average wind speed in December - Alton, UT
  • Average wind speed in December: 6.9mph

The windiest month (with the highest average wind speed) is April (9mph).
The calmest months (with the lowest average wind speed) are July and August (6.3mph).

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Average humidity in December
Alton, UT

Average humidity in December - Alton, UT
  • Average humidity in December: 75%

The month with the highest relative humidity is January (77%).
The month with the lowest relative humidity is June (29%).

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Average rainfall in December
Alton, UT

Average rainfall in December - Alton, UT
  • Average rainfall in December: 1.81"

The wettest month (with the highest rainfall) is July (3.98").
The driest month (with the least rainfall) is June (0.39").

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Average rainfall days in December
Alton, UT

Average rainfall days in December - Alton, UT
  • Average rainfall days in December: 3.9 days

The month with the highest number of rainy days is July (15.8 days).
The month with the least rainy days is February (2.8 days).

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Average snowfall in December
Alton, UT

Average snowfall in December - Alton, UT
  • Average snowfall in December: 14.06"

The month with the highest snowfall is December (14.06").
The months with the least snowfall are June, July and August (0").

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Average snowfall days in December
Alton, UT

Average snowfall days in December - Alton, UT
  • Average snowfall days in December: 12.5 days

The month with the highest number of snowfall days is December (12.5 days).
The months with the least snowfall days are July and August (0 days).

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

Average daylight in December / Average sunshine in December - Alton, UT
  • Average daylight in December: 9h and 4min

The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 36min).

  • Average sunshine in December: 5h and 5min

The month with the most sunshine is June (Average sunshine: 11h and 42min).
The months with the least sunshine are January and December (Average sunshine: 5h and 48min).

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Average sunshine days in December
Alton, UT

Average sunshine days in December - Alton, UT
  • Average sunshine days in December: 17.9 days

The month with the most sunshine days is June (23.4 days).
The month with the least sunshine days is July (13.3 days).

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Average UV index in December
Alton, UT

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

The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, February, March, November and December (UV index 2).

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Average cloud cover in December
Alton, UT

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

The months with the most cloud cover are February and December (Cloud cover 38).
The month with the least cloud cover is June (Cloud cover 10).

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Average visibility in December
Alton, UT

Average visibility in December - Alton, 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 months with the lowest visibility are January, February and December (5mi).

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Alton, Utah, USA

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