December weather forecastHyrum, UT
December
Weather in December
December, the first month of the winter in Hyrum, is also a subzero cold month, with temperature in the range of an average low of 15.3°F (-9.3°C) and an average high of 28.8°F (-1.8°C).Temperature
Hyrum experiences the lowest of its temperatures in January and December, when the average high-temperatures rise to 28.8°F (-1.8°C).Humidity
The average relative humidity in December is 85%.Rainfall
In Hyrum, in December, it is raining for 11 days, with typically 2.05" (52mm) of accumulated precipitation. Throughout the year, there are 122.8 rainfall days, and 16.89" (429mm) of precipitation is accumulated.Snowfall
January through May, September through December are months with snowfall in Hyrum. In Hyrum, during December, snow falls for 16.3 days and regularly aggregates up to 12.91" (328mm) of snow. In Hyrum, Utah, during the entire year, snow falls for 77.8 days and aggregates up to 58.86" (1495mm) of snow.Daylight
With an average of 9h and 12min of daylight, December has the shortest days of the year in Hyrum.On the first day of the month, sunrise is at 7:35 am and sunset at 4:57 pm. On the last day of December, sunrise is at 7:54 am and sunset at 5:07 pm MST.
Sunshine
The average sunshine in December is 5.4h.UV index
The months with the lowest UV index are January, November and December, with an average maximum UV index of 1. A UV Index reading of 2, and below, represents a minimal health hazard from exposure to the Sun's UV radiation for average individuals.Note: In December, the maximum UV index of 1 suggests these recommendations:
Those with sensitive skin, infants, and children require constant safeguarding from prolonged sun exposure. Exposing oneself to the midday Sun can be harmful due to the strong UV radiation; limit your time outside. To cut down UV radiation exposure by about half, sport a wide-brim hat. Note well! The intensity of the Sun's UV rays can be nearly doubled by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Hyrum, UT
- Average high temperature in December: 28.8°F
The warmest month (with the highest average high temperature) is July (83.3°F).
The months with the lowest average high temperature are January and December (28.8°F).
- Average low temperature in December: 15.3°F
The month with the highest average low temperature is July (55.4°F).
The coldest month (with the lowest average low temperature) is January (14°F).
Average pressure in December
Hyrum, UT
- Average pressure in December: 30.24"Hg
The month with the highest atmospheric pressure is January (30.29"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).
Average wind speed in December
Hyrum, UT
- Average wind speed in December: 4.4mph
The windiest months (with the highest average wind speed) are April and June (5.8mph).
The calmest month (with the lowest average wind speed) is January (4mph).
Average humidity in December
Hyrum, UT
- Average humidity in December: 85%
The month with the highest relative humidity is January (89%).
The month with the lowest relative humidity is August (38%).
Average rainfall in December
Hyrum, UT
- Average rainfall in December: 2.05"
The wettest month (with the highest rainfall) is January (2.36").
The driest month (with the least rainfall) is July (0.43").
Average rainfall days in December
Hyrum, UT
- Average rainfall days in December: 11 days
The month with the highest number of rainy days is April (16.1 days).
The month with the least rainy days is August (6 days).
Average snowfall in December
Hyrum, UT
- Average snowfall in December: 12.91"
The month with the highest snowfall is January (16.18").
The months with the least snowfall are June, July and August (0").
Average snowfall days in December
Hyrum, UT
- Average snowfall days in December: 16.3 days
The month with the highest number of snowfall days is January (17.2 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in December /
Average sunshine in December
Hyrum, UT
- Average daylight in December: 9h and 12min
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 12min).
- Average sunshine in December: 5h and 24min
The month with the most sunshine is July (Average sunshine: 12h and 0min).
The month with the least sunshine is January (Average sunshine: 4h and 54min).
Average sunshine days in December
Hyrum, UT
- Average sunshine days in December: 11.6 days
The month with the most sunshine days is June (21.6 days).
The month with the least sunshine days is February (7.8 days).
Average UV index in December
Hyrum, UT
- Average UV index in December: 1
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, November and December (UV index 1).
Average cloud cover in December
Hyrum, UT
- Average cloud cover in December: 45
The month with the most cloud cover is February (Cloud cover 49).
The month with the least cloud cover is August (Cloud cover 10).
Average visibility in December
Hyrum, UT
- Average visibility in December: 5mi
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 and February (4mi).
