December weather forecast
Ephraim, UT

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Weather in December

December, the first month of the winter in Ephraim, is still a freezing cold month, with an average temperature varying between 15.4°F (-9.2°C) and 31.5°F (-0.3°C).

Temperature

January and December bring Ephraim's lowest average temperatures, reaching a high of 31.5°F (-0.3°C).

Humidity

In Ephraim, Utah, the average relative humidity in December is 78%.

Rainfall

In Ephraim, in December, during 8.5 rainfall days, 1.5" (38mm) of precipitation is typically accumulated. Throughout the year, there are 115.2 rainfall days, and 15.71" (399mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January through May, September through December. In December, in Ephraim, Utah, it is snowing for 14.1 days. Throughout December, 9.88" (251mm) of snow is accumulated. In Ephraim, during the entire year, snow falls for 66.3 days and aggregates up to 48.94" (1243mm) of snow.

Daylight

With an average of 9h and 24min of daylight, December has the shortest days of the year.
On the first day of December, sunrise is at 7:27 am and sunset at 5:03 pm. On the last day of the month, sunrise is at 7:46 am and sunset at 5:13 pm MST.

Sunshine

In Ephraim, the average sunshine in December is 5.8h.

UV index

The months with the lowest UV index in Ephraim, Utah, are January through April, October through December, with an average maximum UV index of 2. A UV Index value of 2, and less, symbolizes a low threat to health from unprotected exposure to Sun's UV rays for the ordinary person.
Note: In December, the maximum UV index of 2 translates into these guidelines:
Children, infants, and individuals with sensitive skin should be constantly protected from extended sun exposure. UV radiation is strongest from the Sun during midday; protect yourself by staying in shaded areas. Experience reduced UV exposure by about half when donning a wide-brim hat. Take warning! The intensity of the Sun's UV radiation can be nearly amplified twice due to snow reflection.
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Frequently asked questions

What is the coldest month in Ephraim?

January and December mark Ephraim's lowest temperatures, averaging a high-temperature of 31.5°F (-0.3°C).

How cold is December in Ephraim?

The average high-temperature, in December, in Ephraim, is 31.5°F (-0.3°C), while the average low-temperature is 15.4°F (-9.2°C).

What is the average humidity in December in Ephraim?

In Ephraim, the average relative humidity in December is 78%.

How much does it rain in Ephraim in December?

In Ephraim, in December, it is raining for 8.5 days, with typically 1.5" (38mm) of accumulated precipitation.

How much does it snow in Ephraim in December?

In Ephraim, Utah, during December, snow falls for 14.1 days and regularly aggregates up to 9.88" (251mm) of snow.

What is the month with the shortest days in Ephraim?

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

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

In December, the average day length in Ephraim, Utah, is 9h and 27min.

What time are sunrise and sunset in December in Ephraim?

On the first day of December in Ephraim, Utah, sunrise is at 7:27 am and sunset at 5:03 pm. On the last day of the month, sunrise is at 7:46 am and sunset at 5:13 pm MST.

How many hours of sunshine does Ephraim have in December?

The average sunshine duration in December in Ephraim is 5.8h.

What are the months with the lowest UV index in Ephraim?

The months with the lowest UV index in Ephraim are January through April, October through December, with an average maximum UV index of 2.

What is the UV index intensity in December in Ephraim?

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

Average temperature in December - Ephraim, UT
  • Average high temperature in December: 31.5°F

The warmest month (with the highest average high temperature) is July (80.2°F).
The months with the lowest average high temperature are January and December (31.5°F).

  • Average low temperature in December: 15.4°F

The month with the highest average low temperature is July (55°F).
The coldest month (with the lowest average low temperature) is January (15.3°F).

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Average pressure in December
Ephraim, UT

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

The month with the highest atmospheric pressure is January (30.24"Hg).
The month with the lowest atmospheric pressure is June (29.84"Hg).

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Average wind speed in December
Ephraim, UT

Average wind speed in December - Ephraim, UT
  • Average wind speed in December: 5.2mph

The windiest month (with the highest average wind speed) is April (6.8mph).
The calmest month (with the lowest average wind speed) is January (4.8mph).

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Average humidity in December
Ephraim, UT

Average humidity in December - Ephraim, UT
  • Average humidity in December: 78%

The month with the highest relative humidity is January (82%).
The month with the lowest relative humidity is June (35%).

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Average rainfall in December
Ephraim, UT

Average rainfall in December - Ephraim, UT
  • Average rainfall in December: 1.5"

The wettest month (with the highest rainfall) is March (1.73").
The driest month (with the least rainfall) is June (0.59").

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Average rainfall days in December
Ephraim, UT

Average rainfall days in December - Ephraim, UT
  • Average rainfall days in December: 8.5 days

The month with the highest number of rainy days is July (12.7 days).
The month with the least rainy days is June (6.3 days).

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Average snowfall in December
Ephraim, UT

Average snowfall in December - Ephraim, UT
  • Average snowfall in December: 9.88"

The month with the highest snowfall is January (9.92").
The months with the least snowfall are June, July and August (0").

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Average snowfall days in December
Ephraim, UT

Average snowfall days in December - Ephraim, UT
  • Average snowfall days in December: 14.1 days

The month with the highest number of snowfall days is December (14.1 days).
The months with the least snowfall days are June, July and August (0 days).

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

Average daylight in December / Average sunshine in December - Ephraim, UT
  • Average daylight in December: 9h and 2min

The month with the longest days is June (Average daylight: 14h and 54min).
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).

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Average sunshine days in December
Ephraim, UT

Average sunshine days in December - Ephraim, UT
  • Average sunshine days in December: 14.7 days

The month with the most sunshine days is June (20.8 days).
The month with the least sunshine days is February (11.2 days).

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Average UV index in December
Ephraim, UT

Average UV index in December - Ephraim, 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, April, October, November and December (UV index 2).

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Average cloud cover in December
Ephraim, UT

Average cloud cover in December - Ephraim, UT
  • Average cloud cover in December: 39

The months with the most cloud cover are January and February (Cloud cover 40).
The months with the least cloud cover are August and September (Cloud cover 11).

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Average visibility in December
Ephraim, UT

Average visibility in December - Ephraim, 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).

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Ephraim, Utah, USA

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