Saint George
Utah, USA
Long-term weather forecast
Long-term weather forecast

December weather forecast and climate
Saint George, UT

The first month of the winter, December, is also a frosty month in Saint George, Utah, 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

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

Humidity

In Saint George, the average relative humidity is 57%.

Rainfall

In December, in Saint George, the rain falls for 6.8 days. Throughout December, 0.94" (24mm) of precipitation is accumulated. 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 December, it is snowing for 0.8 days. Throughout December, 0.16" (4mm) of snow is accumulated. Throughout the year, in Saint George, there are 2.4 snowfall days, and 0.59" (15mm) of snow is accumulated.

Daylight

December has the shortest days of the year in Saint George, with an average of 9.7h of daylight.

Sunshine

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

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 estimate of 2, and below, represents a minimal health hazard from unprotected exposure to the Sun's UV rays for average individuals.
Note: The average daily UV index of 2 transform into the following instructions:
For the majority, extended sun exposure is not of great concern. Infants and people with sensitive skin must always be protected. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.

What is the coldest month in Saint George?

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).

What is the temperature in December in Saint George?

In Saint George, Utah, in December, the average high-temperature is 47.7°F (8.7°C), and the average low-temperature is 31.6°F (-0.2°C).

What is the average humidity in December in Saint George?

In Saint George, the average relative humidity in December is 57%.

How many days does it rain in December in Saint George?

In Saint George, in December, during 6.8 rainfall days, 0.94" (24mm) of precipitation is typically accumulated.

How much does it snow in Saint George in December?

In Saint George, Utah, in December, snow falls for 0.8 days, with typically accumulated 0.16" (4mm) of snow.

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

The month with the shortest days is December, with an average of 9.7h of daylight.

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

In December, the average length of the day in Saint George, Utah, is 9.7h.

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

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

How long on average sun shines in December in Saint George?

In Saint George, Utah, the average sunshine in December is 7h.

What is the month with the lowest UV index in Saint George?

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

How high is the UV index in December in Saint George?

In December, the average daily maximum UV index is 2. A UV Index of 2, and less, symbolizes a minimal hazard to health from the exposure to the Sun's UV rays.
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).

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%).

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 lowest rainfall) is June (0.12").

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 lowest number of rainy days is June (1.8 days).

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

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

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).
Months with the lowest number of snowfall days are April, May, June, July, August, September and October (0 days).

Average daylight in December / Average sunshine in December - Saint George, UT
  • Average daylight in December: 9.7h

The month with the longest days is June (Average daylight: 14.7h).
The month with shortest days is December (Average daylight: 9.7h).

  • Average sunshine in December: 7h

Months with most sunshine are June and July (Average sunshine: 11.9h).
The month with least sunshine is December (Average sunshine: 7h).

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

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).