December weather forecastSaint George, UT
December
Weather in December
Wrapping up the year, December marks the full swing of winter in Saint George. Notably, the harshness of winter is felt with a low temperature of 31.6°F (-0.2°C) and a heightened level of humidity at 57%. With winter reaching its peak, the year concludes on a cold note with chances of snowfall reinstating itself.Temperature
Saint George's coldest temperatures are experienced in December, with average high temperatures of 47.7°F (8.7°C) and lows of 31.6°F (-0.2°C).Humidity
In Saint George, Utah, the average relative humidity in December is 57%.Rainfall
In Saint George, Utah, during December, the rain falls for 6.8 days and regularly aggregates up to 0.94" (24mm) of 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
Months with snowfall are January, February, November and December. In Saint George, in December, during 0.8 snowfall days, 0.16" (4mm) of snow is typically accumulated. Throughout the year, there are 2.4 snowfall days, and 0.59" (15mm) of snow is accumulated.Daylight
December has the shortest days of the year, with an average of 9h and 42min 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
With an average of 7h of sunshine, December has the least sunshine of the year in Saint George.UV index
The month with the lowest UV index is December, 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 ordinary person.Note: A typical high UV index of 2 in December suggests the following recommendations:
Prolonged exposure to sunlight rarely troubles the majority, but constant protection is vital for babies, children, and fair-skinned people. To prevent harmful UV exposure, minimize direct contact with the Sun around midday. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly. Remember! The Sun's UV radiation can be magnified almost twofold by the reflection of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
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 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).
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).
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 least 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 least 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").
The months with the least 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).
The months with the least 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: 9h and 42min
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 42min).
- 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).
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).
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).
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).
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).
