Contents
- Weather in December
- Frequently asked questions
- Average temperature in December
- Average pressure in December
- Average wind speed in December
- Average humidity in December
- Average rainfall in December
- Average rainfall days in December
- Average snowfall in December
- Average snowfall days in December
- Average daylight in December
- Average sunshine in December
- Average sunshine days in December
- Average UV index in December
- Average cloud cover in December
- Average visibility in December
Weather in December
Temperature
The onset of December coincides with a reduction in the average high-temperature, falling from a frosty 44.4°F (6.9°C) in November to an icy 33.1°F (0.6°C). During the month of December, Willard anticipates a mean low-temperature of 21.2°F (-6°C).Humidity
In December, the average relative humidity is 79%.Rainfall
In Willard, during December, the rain falls for 9 days and regularly aggregates up to 1.65" (42mm) of precipitation. In Willard, during the entire year, the rain falls for 113.4 days and collects up to 15.59" (396mm) of precipitation.Snowfall
January through May, September through December are months with snowfall. In December, it is snowing for 11.9 days. Throughout December, 8.94" (227mm) of snow is accumulated. In Willard, during the entire year, snow falls for 55.4 days and aggregates up to 45.28" (1150mm) of snow.Daylight
The month with the shortest days is December, with an average of 9h and 12min of daylight.On the first day of December, sunrise is at 7:35 am and sunset at 4:59 pm. On the last day of the month, sunrise is at 7:54 am and sunset at 5:08 pm MST.
Sunshine
The average sunshine in December is 5.9h.UV index
January through March, October through December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index reading of 2, and below, represents a minimal health hazard from unsafe exposure to UV radiation for ordinary individuals.Note: An average maximum UV index of 2 in December leads to these recommendations:
Extended sunlight exposure does not pose significant problems for most people, except for children, infants, and people with fair skin who always need shielding. The Sun is at its harshest during midday; protect yourself by staying in shaded areas and minimizing exposure. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days. Remember to consider! The UV radiation from the Sun can be intensified nearly twice by the reflection of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is December?
What is the average humidity in December?
How much does it rain in December?
How much does it snow in December?
What is the month with the shortest days?
What is the average length of the day in December?
When are sunrise and sunset in December?
How many hours of sunshine does Willard have in December?
What are the months with the lowest UV index in Willard?
What is the UV index reading in December?
Average temperature in December
Willard, UT
- Average high temperature in December: 33.1°F
The warmest month (with the highest average high temperature) is July (84.2°F).
The month with the lowest average high temperature is January (32.5°F).
- Average low temperature in December: 21.2°F
The month with the highest average low temperature is July (59.5°F).
The coldest month (with the lowest average low temperature) is January (19.9°F).
Average pressure in December
Willard, UT
- Average pressure in December: 30.23"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
Willard, UT
- Average wind speed in December: 5.2mph
The windiest month (with the highest average wind speed) is April (6.3mph).
The calmest month (with the lowest average wind speed) is January (4.6mph).
Average humidity in December
Willard, UT
- Average humidity in December: 79%
The month with the highest relative humidity is January (84%).
The month with the lowest relative humidity is August (36%).
Average rainfall in December
Willard, UT
- Average rainfall in December: 1.65"
The wettest month (with the highest rainfall) is January (1.93").
The driest month (with the least rainfall) is July (0.55").
Average rainfall days in December
Willard, UT
- Average rainfall days in December: 9 days
The months with the highest number of rainy days are March and April (14.3 days).
The month with the least rainy days is July (6.6 days).
Average snowfall in December
Willard, UT
- Average snowfall in December: 8.94"
The month with the highest snowfall is January (12.28").
The months with the least snowfall are June, July and August (0").
Average snowfall days in December
Willard, UT
- Average snowfall days in December: 11.9 days
The months with the highest number of snowfall days are January and February (12.3 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in December /
Average sunshine in December
Willard, UT
- Average daylight in December: 9h and 1min
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 5min
The months with the most sunshine are June, 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
Willard, UT
- Average sunshine days in December: 15.3 days
The month with the most sunshine days is October (20.5 days).
The month with the least sunshine days is February (11.7 days).
Average UV index in December
Willard, 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, March, October, November and December (UV index 2).
Average cloud cover in December
Willard, UT
- Average cloud cover in December: 39
The months with the most cloud cover are January and February (Cloud cover 42).
The month with the least cloud cover is August (Cloud cover 10).
Average visibility in December
Willard, 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 month with the lowest visibility is January (4mi).
Willard, Utah, USA
Weather forecast for your location
2. Allow the app to use your location