December weather forecast
Saint George, UT

Weather in December

December, the first month of the winter in Saint George, is still a chilly month, with temperature in the range of an average low of 31.6°F (-0.2°C) and an average high of 47.7°F (8.7°C).

Temperature

The coldest month is December, with an average high-temperature of 47.7°F (8.7°C) and an average low-temperature of 31.6°F (-0.2°C).

Humidity

The average relative humidity in December is 57%.

Rainfall

In Saint George, in December, it is raining for 6.8 days, with typically 0.94" (24mm) of accumulated precipitation. In Saint George, during the entire year, the rain falls for 66.6 days and collects up to 6.97" (177mm) of precipitation.

Snowfall

January, February, November and December are months with snowfall in Saint George. In Saint George, snow falls for 0.8 days, with typically accumulated 0.16" (4mm) of snow. Throughout the year, there are 2.4 snowfall days, and 0.59" (15mm) of snow is accumulated.

Daylight

The month with the shortest days in Saint George, Utah, is December, with an average of 9h and 40min of daylight.
On the first day of December, sunrise is at 7:29 am and sunset at 5:17 pm. On the last day of the month, sunrise is at 7:47 am and sunset at 5:27 pm MST.

Sunshine

December has the least sunshine of the year, with an average of 7h of sunshine.

UV index

December is the month with the lowest UV index in Saint George, with an average maximum UV index of 2. A UV Index reading of 2, and below, represents a low threat to health from exposure to the Sun's UV rays for the average person.
Note: The average daily UV index of 2 in December transform into the following instructions:
Most people can stay in the Sun for up to 1 hour without burning, apart from children that always must be protected from sun exposure. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
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FAQ

What is the coldest month in Saint George?

December is the coldest month in Saint George, with an average high-temperature of 47.7°F (8.7°C) and an average low-temperature of 31.6°F (-0.2°C).

What is the average humidity in December in Saint George?

The average relative humidity in December in Saint George is 57%.

How much does it rain in Saint George in December?

In Saint George, during December, the rain falls for 6.8 days and regularly aggregates up to 0.94" (24mm) of precipitation.

How much does it snow in Saint George in December?

In December, it is snowing for 0.8 days. Throughout December, 0.16" (4mm) of snow is accumulated.

What is the month with the shortest days in Saint George?

The month with the shortest days in Saint George is December, with an average of 9h and 40min of daylight.

How many hours of daylight does Saint George have in December?

The average day length in December in Saint George is 9h and 40min.

What time are sunrise and sunset in December in Saint George?

On the first day of December, sunrise is at 7:29 am and sunset at 5:17 pm. On the last day of the month, sunrise is at 7:47 am and sunset at 5:27 pm MST.

What is the month with the least sunshine in Saint George?

With an average of 7h of sunshine, December has the least sunshine of the year.

How many hours of sunshine does Saint George have in December?

The average sunshine duration in December is 7h.

When is the lowest UV index in Saint George?

December is the month with the lowest UV index in Saint George, with an average maximum UV index of 2.

What is the UV index reading in December in Saint George?

In December, the average daily maximum UV index 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 sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in December
Saint George, UT

Average temperature in December - Saint George, UT
  • Average high temperature in December: 47.7°F

The warmest month (with the highest average high temperature) is July (93.9°F).
The month with the lowest average high temperature is December (47.7°F).

  • Average low temperature in December: 31.6°F

The month with the highest average low temperature is July (72.3°F).
The coldest month (with the lowest average low temperature) is December (31.6°F).

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Average pressure in December
Saint George, UT

Average pressure in December - Saint George, UT
  • Average pressure in December: 30.14"Hg

The month with the highest atmospheric pressure is January (30.19"Hg).
The month with the lowest atmospheric pressure is June (29.83"Hg).

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Average wind speed in December
Saint George, UT

Average wind speed in December - Saint George, UT
  • Average wind speed in December: 5.3mph

The windiest month (with the highest average wind speed) is April (7.3mph).
The calmest months (with the lowest average wind speed) are August and December (5.3mph).

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Average humidity in December
Saint George, UT

Average humidity in December - Saint George, UT
  • Average humidity in December: 57%

The month with the highest relative humidity is January (59%).
The month with the lowest relative humidity is June (18%).

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Average rainfall in December
Saint George, UT

Average rainfall in December - Saint George, UT
  • Average rainfall in December: 0.94"

The wettest month (with the highest rainfall) is March (0.98").
The driest month (with the least rainfall) is June (0.12").

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Average rainfall days in December
Saint George, UT

Average rainfall days in December - Saint George, UT
  • Average rainfall days in December: 6.8 days

The month with the highest number of rainy days is March (8.3 days).
The month with the least rainy days is June (1.8 days).

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Average snowfall in December
Saint George, UT

Average snowfall in December - Saint George, UT
  • Average snowfall in December: 0.16"

The month with the highest snowfall is February (0.2").
The months with the least snowfall are March, April, May, June, July, August, September and October (0").

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Average snowfall days in December
Saint George, UT

Average snowfall days in December - Saint George, UT
  • Average snowfall days in December: 0.8 days

The month with the highest number of snowfall days is December (0.8 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).

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Average daylight in December /
Average sunshine in December
Saint George, UT

Average daylight in December / Average sunshine in December - Saint George, UT
  • Average daylight in December: 9h and 40min

The month with the longest days is June (Average daylight: 14h and 40min).
The month with the shortest days is December (Average daylight: 9h and 40min).

  • Average sunshine in December: 7h and 0min

The months with the most sunshine are June and July (Average sunshine: 11h and 54min).
The month with the least sunshine is December (Average sunshine: 7h and 0min).

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Average sunshine days in December
Saint George, UT

Average sunshine days in December - Saint George, UT
  • Average sunshine days in December: 22.8 days

The month with the most sunshine days is June (26.3 days).
The month with the least sunshine days is July (17.9 days).

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Average UV index in December
Saint George, UT

Average UV index in December - Saint George, UT
  • Average UV index in December: 2

The months with the highest UV index are June, July and August (UV index 7).
The month with the lowest UV index is December (UV index 2).

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Average cloud cover in December
Saint George, UT

Average cloud cover in December - Saint George, UT
  • Average cloud cover in December: 21

The month with the most cloud cover is December (Cloud cover 21).
The month with the least cloud cover is June (Cloud cover 6).

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Average visibility in December
Saint George, UT

Average visibility in December - Saint George, 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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