December weather forecastAltonah, UT
December
Weather in December
December, the first month of the winter in Altonah, is also a subzero cold month, with an average temperature ranging between min 9.3°F (-12.6°C) and max 25.7°F (-3.5°C).Temperature
December tends to be the coldest month, with temperatures averaging a daily high of 25.7°F (-3.5°C) and a low of 9.3°F (-12.6°C).Humidity
In December, the average relative humidity is 78%.Rainfall
In Altonah, in December, during 5.7 rainfall days, 0.59" (15mm) of precipitation is typically accumulated. Throughout the year, there are 98.4 rainfall days, and 11.54" (293mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through June, September through December. In December, it is snowing for 11.6 days. Throughout December, 5" (127mm) of snow is accumulated. Throughout the year, in Altonah, there are 87 snowfall days, and 51.73" (1314mm) of snow is accumulated.Daylight
The month with the shortest days is December, with an average of 9h and 18min of daylight.On the first day of the month, sunrise is at 7:25 am and sunset at 4:55 pm. On the last day of December, sunrise is at 7:44 am and sunset at 5:04 pm MST.
Sunshine
The average sunshine in December is 6.4h.UV index
January through April, October through December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index of 2, and less, symbolizes a minimal health hazard from unprotected exposure to Sun's UV rays for average individuals.Note: In December, the maximum UV index of 2 suggests these recommendations:
Prolonged sun exposure generally does not trouble most people. However, it is vital to ensure protection for babies, children, and individuals with sensitive skin. Avoiding the Sun's peak radiation during midday hours is essential for health and safety. To cut down UV radiation exposure by about half, sport a wide-brim hat. Note this! The Sun's UV radiation can nearly be doubled by the reflection off snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Altonah, UT
- Average high temperature in December: 25.7°F
The warmest month (with the highest average high temperature) is July (73°F).
The month with the lowest average high temperature is December (25.7°F).
- Average low temperature in December: 9.3°F
The month with the highest average low temperature is July (48.7°F).
The coldest month (with the lowest average low temperature) is January (8.6°F).
Average pressure in December
Altonah, 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
Altonah, UT
- Average wind speed in December: 6.2mph
The windiest month (with the highest average wind speed) is June (7.9mph).
The calmest months (with the lowest average wind speed) are July and August (6mph).
Average humidity in December
Altonah, UT
- Average humidity in December: 78%
The month with the highest relative humidity is February (82%).
The months with the lowest relative humidity are June and July (44%).
Average rainfall in December
Altonah, UT
- Average rainfall in December: 0.59"
The wettest month (with the highest rainfall) is May (1.61").
The driest month (with the least rainfall) is January (0.43").
Average rainfall days in December
Altonah, UT
- Average rainfall days in December: 5.7 days
The month with the highest number of rainy days is July (15.1 days).
The month with the least rainy days is November (3.4 days).
Average snowfall in December
Altonah, UT
- Average snowfall in December: 5"
The month with the highest snowfall is March (10.24").
The months with the least snowfall are July and August (0").
Average snowfall days in December
Altonah, UT
- Average snowfall days in December: 11.6 days
The month with the highest number of snowfall days is March (13.1 days).
The month with the least snowfall days is July (0 days).
Average daylight in December /
Average sunshine in December
Altonah, UT
- Average daylight in December: 9h and 18min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in December: 6h and 24min
The month with the most sunshine is August (Average sunshine: 11h and 48min).
The month with the least sunshine is January (Average sunshine: 6h and 12min).
Average sunshine days in December
Altonah, UT
- Average sunshine days in December: 18.6 days
The month with the most sunshine days is November (21.1 days).
The month with the least sunshine days is July (10.9 days).
Average UV index in December
Altonah, UT
- Average UV index in December: 2
The month with the highest UV index is July (UV index 5).
The months with the lowest UV index are January, February, March, April, October, November and December (UV index 2).
Average cloud cover in December
Altonah, UT
- Average cloud cover in December: 33
The month with the most cloud cover is February (Cloud cover 38).
The month with the least cloud cover is September (Cloud cover 13).
Average visibility in December
Altonah, UT
- Average visibility in December: 6mi
The months with the highest visibility are March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January and February (5mi).
