December weather forecast
Heist, UT

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Weather in December

The first month of the winter, December, is also an icy month in Heist, Utah, with temperature in the range of an average low of 25.5°F (-3.6°C) and an average high of 41.5°F (5.3°C).

Temperature

December brings the lowest temperatures, with an average high of 41.5°F (5.3°C) and an average low of 25.5°F (-3.6°C).

Humidity

In Heist, Utah, the average relative humidity in December is 63%.

Rainfall

In Heist, in December, during 6.1 rainfall days, 1.14" (29mm) of precipitation is typically accumulated. In Heist, during the entire year, the rain falls for 75.1 days and collects up to 11.26" (286mm) of precipitation.

Snowfall

Months with snowfall are January through April, November and December. In Heist, Utah, in December, during 4.9 snowfall days, 4.09" (104mm) of snow is typically accumulated. Throughout the year, in Heist, there are 21 snowfall days, and 20.12" (511mm) of snow is accumulated.

Daylight

The month with the shortest days is December, with an average of 9h and 36min of daylight.
On the first day of the month, sunrise is at 7:32 am and sunset at 5:16 pm. On the last day of December, in Heist, sunrise is at 7:50 am and sunset at 5:26 pm MST.

Sunshine

December has the least sunshine of the year in Heist, with an average of 6.5h of sunshine.

UV index

The months with the lowest UV index in Heist are January, February, November and December, with an average maximum UV index of 2. A UV Index reading of 2, and below, represents a minimal health vulnerability from unsafe exposure to UV radiation for average individuals.
Note: The maximum daily UV index, 2 in December, converts into the following recommendations:
Prolonged exposure to sunlight rarely troubles the majority, but constant protection is vital for babies, children, and fair-skinned people. Avoiding direct sunlight during midday hours helps reduce the risk from intense UV radiation. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes. Guard yourself! Snow reflection can almost double the UV radiation from the Sun.
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Frequently asked questions

What part of the year is the coldest in Heist?

The coldest temperatures occur during December, when averages reach a peak of 41.5°F (5.3°C) and a low of 25.5°F (-3.6°C).

Is it cold in Heist during December?

The average high-temperature and low-temperature in Heist during December are 41.5°F (5.3°C) and 25.5°F (-3.6°C) respectively.

What is the average humidity in December in Heist?

In December, the average relative humidity is 63%.

How many days does it rain in December in Heist?

In Heist, during December, the rain falls for 6.1 days and regularly aggregates up to 1.14" (29mm) of precipitation.

How much does it snow in Heist in December?

In December, in Heist, Utah, it is snowing for 4.9 days. Throughout December, 4.09" (104mm) of snow is accumulated.

What is the month with the shortest days in Heist?

With an average of 9h and 36min of daylight, December has the shortest days of the year in Heist.

How many hours of daylight does Heist have in December?

In Heist, Utah, the average day length in December is 9h and 35min.

When are sunrise and sunset in December in Heist?

On the first day of December in Heist, Utah, sunrise is at 7:32 am and sunset at 5:16 pm. On the last day of the month, sunrise is at 7:50 am and sunset at 5:26 pm MST.

What is the month with the least sunshine in Heist?

December has the least sunshine of the year in Heist, Utah, with an average of 6.5h of sunshine.

How long on average sun shines in December in Heist?

In December, the average sunshine duration in Heist is 6.5h.

When is the lowest UV index in Heist?

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

How high is the UV index in December in Heist?

In December, the average daily maximum UV index in Heist is 2. A UV Index estimate of 2, and below, represents a minimal health vulnerability 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
Heist, UT

Average temperature in December - Heist, UT
  • Average high temperature in December: 41.5°F

The warmest month (with the highest average high temperature) is July (88°F).
The month with the lowest average high temperature is December (41.5°F).

  • Average low temperature in December: 25.5°F

The month with the highest average low temperature is July (66.4°F).
The coldest month (with the lowest average low temperature) is December (25.5°F).

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Average pressure in December
Heist, UT

Average pressure in December - Heist, 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 (29.82"Hg).

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Average wind speed in December
Heist, UT

Average wind speed in December - Heist, UT
  • Average wind speed in December: 7.1mph

The windiest month (with the highest average wind speed) is April (9.9mph).
The calmest months (with the lowest average wind speed) are January, November and December (7.1mph).

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Average humidity in December
Heist, UT

Average humidity in December - Heist, UT
  • Average humidity in December: 63%

The month with the highest relative humidity is January (65%).
The month with the lowest relative humidity is June (20%).

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Average rainfall in December
Heist, UT

Average rainfall in December - Heist, UT
  • Average rainfall in December: 1.14"

The wettest month (with the highest rainfall) is July (1.46").
The driest month (with the least rainfall) is June (0.2").

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Average rainfall days in December
Heist, UT

Average rainfall days in December - Heist, UT
  • Average rainfall days in December: 6.1 days

The month with the highest number of rainy days is July (10.5 days).
The month with the least rainy days is June (3.1 days).

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Average snowfall in December
Heist, UT

Average snowfall in December - Heist, UT
  • Average snowfall in December: 4.09"

The month with the highest snowfall is February (5.39").
The months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days in December
Heist, UT

Average snowfall days in December - Heist, UT
  • Average snowfall days in December: 4.9 days

The month with the highest number of snowfall days is December (4.9 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

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

Average daylight in December / Average sunshine in December - Heist, 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: 6h and 3min

The month with the most sunshine is August (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 6h and 30min).

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Average sunshine days in December
Heist, UT

Average sunshine days in December - Heist, UT
  • Average sunshine days in December: 22.4 days

The month with the most sunshine days is June (25.4 days).
The months with the least sunshine days are July and August (18.3 days).

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Average UV index in December
Heist, UT

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

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

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Average cloud cover in December
Heist, UT

Average cloud cover in December - Heist, UT
  • Average cloud cover in December: 28

The month with the most cloud cover is December (Cloud cover 28).
The month with the least cloud cover is August (Cloud cover 8).

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Average visibility in December
Heist, UT

Average visibility in December - Heist, UT
  • Average visibility in December: 6mi

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

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Heist, Utah, USA

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