December weather forecastWhiterocks, UT
December
Weather in December
December, the first month of the winter in Whiterocks, is also a subzero cold month, with an average temperature ranging between max 31.1°F (-0.5°C) and min 15.1°F (-9.4°C).Temperature
The shift from November to December corresponds with a decrease in the average high-temperature, down to a freezing cold 31.1°F (-0.5°C) from a chilly 44.1°F (6.7°C). In the month of December, Whiterocks's average low-temperature falls to 15.1°F (-9.4°C).Humidity
In December, the average relative humidity is 74%.Rainfall
In December, the rain falls for 3.4 days. Throughout December, 0.35" (9mm) of precipitation is accumulated. Throughout the year, in Whiterocks, Utah, there are 74.4 rainfall days, and 5.94" (151mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through April, October through December. In Whiterocks, during December, snow falls for 5.1 days and regularly aggregates up to 2.56" (65mm) of snow. Throughout the year, there are 30.9 snowfall days, and 14.76" (375mm) of snow is accumulated.Daylight
With an average of 9h and 18min of daylight, December has the shortest days of the year.On the first day of December, sunrise is at 7:24 am and sunset at 4:53 pm. On the last day of the month, sunrise is at 7:42 am and sunset at 5:03 pm MST.
Sunshine
In December, the average sunshine is 6.8h.UV index
The months with the lowest UV index are January, February, October through December, with an average maximum UV index of 2. A UV Index reading of 2, and below, represents a low health risk from unprotected exposure to Sun's UV rays for average individuals.Note: In December, a daily maximum UV index of 2 leads to the following instructions:
While most people are not greatly affected by extended sun exposure, those with fair skin, babies, and children must always have protection. Midday is when the Sun's radiation is strongest; avoid prolonged exposure during this time. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Whiterocks, UT
- Average high temperature in December: 31.1°F
The warmest month (with the highest average high temperature) is July (84.7°F).
The month with the lowest average high temperature is January (30.4°F).
- Average low temperature in December: 15.1°F
The month with the highest average low temperature is July (60.3°F).
The coldest month (with the lowest average low temperature) is January (12.9°F).
Average pressure in December
Whiterocks, UT
- Average pressure in December: 30.22"Hg
The month with the highest atmospheric pressure is January (30.28"Hg).
The month with the lowest atmospheric pressure is June (29.86"Hg).
Average wind speed in December
Whiterocks, UT
- Average wind speed in December: 4.1mph
The windiest month (with the highest average wind speed) is June (7mph).
The calmest month (with the lowest average wind speed) is January (3.8mph).
Average humidity in December
Whiterocks, UT
- Average humidity in December: 74%
The month with the highest relative humidity is January (81%).
The month with the lowest relative humidity is June (31%).
Average rainfall in December
Whiterocks, UT
- Average rainfall in December: 0.35"
The wettest months (with the highest rainfall) are March and May (0.67").
The driest month (with the least rainfall) is November (0.24").
Average rainfall days in December
Whiterocks, UT
- Average rainfall days in December: 3.4 days
The month with the highest number of rainy days is July (9.4 days).
The month with the least rainy days is November (2.3 days).
Average snowfall in December
Whiterocks, UT
- Average snowfall in December: 2.56"
The month with the highest snowfall is February (4.69").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
Whiterocks, UT
- Average snowfall days in December: 5.1 days
The month with the highest number of snowfall days is February (8.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Whiterocks, 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 48min
The months with the most sunshine are June and August (Average sunshine: 12h and 0min).
The month with the least sunshine is January (Average sunshine: 6h and 42min).
Average sunshine days in December
Whiterocks, UT
- Average sunshine days in December: 24.1 days
The month with the most sunshine days is November (25.8 days).
The month with the least sunshine days is July (16.8 days).
Average UV index in December
Whiterocks, UT
- Average UV index in December: 2
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January, February, October, November and December (UV index 2).
Average cloud cover in December
Whiterocks, UT
- Average cloud cover in December: 25
The month with the most cloud cover is February (Cloud cover 27).
The months with the least cloud cover are August and September (Cloud cover 11).
Average visibility in December
Whiterocks, 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).
