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
Arrival of December comes with a reduction in the average high-temperature, falling from a frosty 45.5°F (7.5°C) in November to a cold 34°F (1.1°C). Throughout the December nights, Washington Terrace encounters a low-temperature of 23.4°F (-4.8°C).Humidity
In Washington Terrace, the average relative humidity in December is 77%.Rainfall
In Washington Terrace, in December, it is raining for 5.5 days, with typically 1.02" (26mm) of accumulated precipitation. In Washington Terrace, during the entire year, the rain falls for 91.6 days and collects up to 11.06" (281mm) of precipitation.Snowfall
January through May, September through December are months with snowfall in Washington Terrace. In Washington Terrace, during December, snow falls for 8.2 days and regularly aggregates up to 4.37" (111mm) of snow. Throughout the year, there are 37.8 snowfall days, and 24.76" (629mm) 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 7:34 am and sunset at 4:59 pm. On the last day of December, in Washington Terrace, sunrise is at 7:53 am and sunset at 5:09 pm MST.
Sunshine
The average sunshine in December is 6h.UV index
January, February, November and 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 vulnerability from unsafe exposure to UV radiation for the average person.Note: In December, the average maximum UV index of 2 translates into the following recommendations:
While most people are not greatly affected by extended sun exposure, those with fair skin, babies, and children must always have protection. Being in direct Sun during midday can be harmful due to intense solar radiation; take precautions. A wide-brimmed hat is a staple for defending the face, eyes, ears, and neck from the Sun. Beware! Reflection from snow can magnify the Sun's UV radiation nearly twofold.
Frequently asked questions
How cold is it in Washington Terrace in December?
What is the average humidity in December in Washington Terrace?
How many days does it rain in December in Washington Terrace?
How much does it snow in Washington Terrace in December?
What is the month with the shortest days in Washington Terrace?
What is the average length of the day in December in Washington Terrace?
When are sunrise and sunset in December in Washington Terrace?
How many hours of sunshine does Washington Terrace have in December?
When is the lowest UV index in Washington Terrace?
What is the UV index intensity in December in Washington Terrace?
Average temperature in December
Washington Terrace, UT
- Average high temperature in December: 34°F
The warmest month (with the highest average high temperature) is July (83.8°F).
The month with the lowest average high temperature is January (33.4°F).
- Average low temperature in December: 23.4°F
The month with the highest average low temperature is July (60.4°F).
The coldest month (with the lowest average low temperature) is January (21.6°F).
Average pressure in December
Washington Terrace, 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
Washington Terrace, UT
- Average wind speed in December: 5.5mph
The windiest month (with the highest average wind speed) is April (6.5mph).
The calmest month (with the lowest average wind speed) is January (4.8mph).
Average humidity in December
Washington Terrace, UT
- Average humidity in December: 77%
The month with the highest relative humidity is January (83%).
The month with the lowest relative humidity is July (37%).
Average rainfall in December
Washington Terrace, UT
- Average rainfall in December: 1.02"
The wettest month (with the highest rainfall) is April (1.26").
The driest month (with the least rainfall) is July (0.43").
Average rainfall days in December
Washington Terrace, UT
- Average rainfall days in December: 5.5 days
The month with the highest number of rainy days is May (12.5 days).
The month with the least rainy days is January (4.6 days).
Average snowfall in December
Washington Terrace, UT
- Average snowfall in December: 4.37"
The month with the highest snowfall is January (6.89").
The months with the least snowfall are June, July and August (0").
Average snowfall days in December
Washington Terrace, UT
- Average snowfall days in December: 8.2 days
The month with the highest number of snowfall days is January (8.8 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in December /
Average sunshine in December
Washington Terrace, UT
- Average daylight in December: 9h and 2min
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: 6h and 0min
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 36min).
Average sunshine days in December
Washington Terrace, UT
- Average sunshine days in December: 19.9 days
The months with the most sunshine days are October and November (21.6 days).
The month with the least sunshine days is April (14.7 days).
Average UV index in December
Washington Terrace, UT
- Average UV index in December: 2
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in December
Washington Terrace, UT
- Average cloud cover in December: 37
The months with the most cloud cover are January and February (Cloud cover 40).
The month with the least cloud cover is August (Cloud cover 10).
Average visibility in December
Washington Terrace, UT
- Average visibility in December: 6mi
The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is January (5mi).
Washington Terrace, Utah, USA
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