December weather forecast
Dewey, UT

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Weather in December

The first month of the winter, December, is also an icy month in Dewey, Utah, with temperature in the range of an average high of 34.9°F (1.6°C) and an average low of 19.8°F (-6.8°C).

Temperature

Dewey in December experiences a subtle temperature decline, with average high-temperatures reducing from a frosty 47.3°F (8.5°C) in November to a wintry 34.9°F (1.6°C). The average low-temperature, in December, is a freezing cold 19.8°F (-6.8°C).

Humidity

In December, the average relative humidity in Dewey is 71%.

Rainfall

In Dewey, in December, during 5 rainfall days, 0.59" (15mm) of precipitation is typically accumulated. In Dewey, during the entire year, the rain falls for 117.7 days and collects up to 15.83" (402mm) of precipitation.

Snowfall

Months with snowfall are January through April, October through December. The month with the most snowfall in Dewey is December, when snow falls for 4.4 days and typically aggregates up to 2.17" (55mm) of snow.

Daylight

With an average of 9h and 30min of daylight, December has the shortest days of the year in Dewey.
On the first day of December in Dewey, sunrise is at 7:17 am and sunset at 4:55 pm. On the last day of the month, sunrise is at 7:35 am and sunset at 5:05 pm MST.

Sunshine

In December, the average sunshine in Dewey is 6.6h.

UV index

In December, the average daily maximum UV index in Dewey, Utah, is 2. A UV Index value of 2, and less, symbolizes a minimal health hazard from unsafe exposure to UV radiation for ordinary individuals.
Note: A maximum daily UV index of 2 during December morphs into the following directions:
Apart from children, who require continuous protection, most can endure sun exposure for up to an hour without experiencing burns. To guard against the harmful effects of the Sun, minimize exposure during midday. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key. Be on the lookout! Nearly twofold UV radiation from the Sun can be reflected by snow.
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Frequently asked questions

How cold is December in Dewey?

In Dewey, in December, the average high-temperature is 34.9°F (1.6°C), and the average low-temperature is 19.8°F (-6.8°C).

What is the average humidity in December in Dewey?

In Dewey, the average relative humidity in December is 71%.

How much does it rain in Dewey in December?

In Dewey, during December, the rain falls for 5 days and regularly aggregates up to 0.59" (15mm) of precipitation.

What is the snowiest month in Dewey?

December is the month with the most snowfall in Dewey. Snow falls for 4.4 days and accumulates 2.17" (55mm) of snow.

How much does it snow in Dewey in December?

In December, it is snowing for 4.4 days. Throughout December, 2.17" (55mm) of snow is accumulated.

What is the month with the shortest days in Dewey?

December has the shortest days of the year in Dewey, Utah, with an average of 9h and 30min of daylight.

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

In Dewey, the average day length in December is 9h and 30min.

When are sunrise and sunset in December in Dewey?

On the first day of December in Dewey, sunrise is at 7:17 am and sunset at 4:55 pm. On the last day of the month, sunrise is at 7:35 am and sunset at 5:05 pm MST.

How long on average sun shines in December in Dewey?

In December, the average sunshine duration in Dewey is 6.6h.

How high is the UV index in December in Dewey?

The average daily maximum UV index in December in Dewey, Utah, is 2. A UV Index estimate of 2, and below, represents a low health threat 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
Dewey, UT

Average temperature in December - Dewey, UT
  • Average high temperature in December: 34.9°F

The warmest month (with the highest average high temperature) is July (83.3°F).
The month with the lowest average high temperature is January (33.3°F).

  • Average low temperature in December: 19.8°F

The month with the highest average low temperature is July (61.5°F).
The coldest month (with the lowest average low temperature) is January (17.6°F).

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Average pressure in December
Dewey, UT

Average pressure in December - Dewey, UT
  • Average pressure in December: 30.19"Hg

The month with the highest atmospheric pressure is January (30.26"Hg).
The month with the lowest atmospheric pressure is June (29.87"Hg).

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Average wind speed in December
Dewey, UT

Average wind speed in December - Dewey, UT
  • Average wind speed in December: 5.1mph

The windiest months (with the highest average wind speed) are April and June (8mph).
The calmest month (with the lowest average wind speed) is January (4.6mph).

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Average humidity in December
Dewey, UT

Average humidity in December - Dewey, UT
  • Average humidity in December: 71%

The month with the highest relative humidity is January (79%).
The month with the lowest relative humidity is June (29%).

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Average rainfall in December
Dewey, UT

Average rainfall in December - Dewey, UT
  • Average rainfall in December: 0.59"

The wettest months (with the highest rainfall) are July and August (3.15").
The driest months (with the least rainfall) are January and February (0.51").

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Average rainfall days in December
Dewey, UT

Average rainfall days in December - Dewey, UT
  • Average rainfall days in December: 5 days

The month with the highest number of rainy days is July (17.9 days).
The month with the least rainy days is February (4 days).

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Average snowfall in December
Dewey, UT

Average snowfall in December - Dewey, UT
  • Average snowfall in December: 2.17"

The month with the highest snowfall is December (2.17").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in December
Dewey, UT

Average snowfall days in December - Dewey, UT
  • Average snowfall days in December: 4.4 days

The month with the highest number of snowfall days is January (4.8 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
Dewey, UT

Average daylight in December / Average sunshine in December - Dewey, UT
  • Average daylight in December: 9h and 3min

The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).

  • Average sunshine in December: 6h and 4min

The month with the most sunshine is June (Average sunshine: 11h and 54min).
The month with the least sunshine is January (Average sunshine: 6h and 6min).

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Average sunshine days in December
Dewey, UT

Average sunshine days in December - Dewey, UT
  • Average sunshine days in December: 22.6 days

The months with the most sunshine days are January and November (23 days).
The month with the least sunshine days is July (8 days).

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Average UV index in December
Dewey, UT

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

The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is January (UV index 1).

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Average cloud cover in December
Dewey, UT

Average cloud cover in December - Dewey, UT
  • Average cloud cover in December: 29

The month with the most cloud cover is January (Cloud cover 31).
The months with the least cloud cover are June and September (Cloud cover 12).

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Average visibility in December
Dewey, UT

Average visibility in December - Dewey, 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).

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Dewey, Utah, USA

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