December weather forecastCoalville, UT
December
Weather in December
Coalville, Utah rounds out the year under a cold, wintry spell in December. Snowfall intensifies, covering the city in a white blanket. Relative humidity increases sharply, making the weather feel colder than the thermometer displays. Daylight remains at a scarce, comparable to the beginning of the year. High pressure persists, similar to the conditions at the year's start, signifying the full circle that the weather in Coalville takes within a calendar year.Temperature
December tends to be the coldest month in Coalville, with temperatures averaging a daily high of 28.8°F (-1.8°C) and a low of 12.4°F (-10.9°C).Humidity
In Coalville, the average relative humidity in December is 84%.Rainfall
In Coalville, during December, the rain falls for 6.8 days and regularly aggregates up to 1.5" (38mm) of precipitation. Throughout the year, there are 95 rainfall days, and 13.54" (344mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through June, September through December. In Coalville, Utah, in December, snow falls for 13.8 days, with typically accumulated 11.65" (296mm) of snow. Throughout the year, there are 81.1 snowfall days, and 64.61" (1641mm) of snow is accumulated.Daylight
December has the shortest days of the year, with an average of 9h and 18min of daylight.On the first day of the month, sunrise is at 7:31 am and sunset at 4:58 pm. On the last day of December, in Coalville, sunrise is at 7:50 am and sunset at 5:07 pm MST.
Sunshine
In Coalville, the average sunshine in December is 5.5h.UV index
December is the month with the lowest UV index in Coalville, Utah, with an average maximum UV index of 1. A UV Index estimate of 2, and below, represents a low health risk from unprotected exposure to Sun's UV rays for ordinary individuals.Note: In December, the maximum UV index of 1 suggests these recommendations:
Prolonged exposure to sunlight rarely troubles the majority, but constant protection is vital for babies, children, and fair-skinned people. The Sun's UV radiation is especially harmful around midday, so reduce exposure and stay safe. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses. Be alert! Nearly double the UV rays from the Sun can be reflected by snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Coalville, UT
- Average high temperature in December: 28.8°F
The warmest month (with the highest average high temperature) is July (80.6°F).
The month with the lowest average high temperature is December (28.8°F).
- Average low temperature in December: 12.4°F
The month with the highest average low temperature is July (50.9°F).
The coldest month (with the lowest average low temperature) is January (11.5°F).
Average pressure in December
Coalville, UT
- Average pressure in December: 30.22"Hg
The month with the highest atmospheric pressure is January (30.27"Hg).
The month with the lowest atmospheric pressure is June (29.87"Hg).
Average wind speed in December
Coalville, UT
- Average wind speed in December: 5.2mph
The windiest month (with the highest average wind speed) is June (6.1mph).
The calmest month (with the lowest average wind speed) is January (4.9mph).
Average humidity in December
Coalville, UT
- Average humidity in December: 84%
The month with the highest relative humidity is January (88%).
The months with the lowest relative humidity are July and August (43%).
Average rainfall in December
Coalville, UT
- Average rainfall in December: 1.5"
The wettest month (with the highest rainfall) is February (1.81").
The driest month (with the least rainfall) is July (0.39").
Average rainfall days in December
Coalville, UT
- Average rainfall days in December: 6.8 days
The month with the highest number of rainy days is May (11.8 days).
The month with the least rainy days is January (4.8 days).
Average snowfall in December
Coalville, UT
- Average snowfall in December: 11.65"
The month with the highest snowfall is February (13.5").
The months with the least snowfall are July and August (0").
Average snowfall days in December
Coalville, UT
- Average snowfall days in December: 13.8 days
The month with the highest number of snowfall days is February (15.5 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in December /
Average sunshine in December
Coalville, UT
- Average daylight in December: 9h and 18min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in December: 5h and 30min
The months with the most sunshine are July and August (Average sunshine: 11h and 54min).
The month with the least sunshine is January (Average sunshine: 5h and 18min).
Average sunshine days in December
Coalville, UT
- Average sunshine days in December: 16 days
The month with the most sunshine days is July (20.5 days).
The month with the least sunshine days is February (10.9 days).
Average UV index in December
Coalville, UT
- Average UV index in December: 1
The months with the highest UV index are June, July and August (UV index 5).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in December
Coalville, UT
- Average cloud cover in December: 42
The month with the most cloud cover is February (Cloud cover 48).
The month with the least cloud cover is August (Cloud cover 10).
Average visibility in December
Coalville, UT
- Average visibility in December: 4mi
The months with the highest visibility are April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, February and December (4mi).
