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 average high-temperature decreases in December, shifting from a frosty 44.4°F (6.9°C) in November to a wintry 33.1°F (0.6°C). In the month of December, Harrisville witnesses a consistent average low-temperature of 21.2°F (-6°C).Humidity
In Harrisville, the average relative humidity in December is 79%.Rainfall
In Harrisville, in December, during 9 rainfall days, 1.65" (42mm) of precipitation is typically accumulated. In Harrisville, 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 Harrisville. In Harrisville, during December, snow falls for 11.9 days and regularly aggregates up to 8.94" (227mm) of snow. Throughout the year, there are 55.4 snowfall days, and 45.28" (1150mm) 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 7:34 am and sunset at 4:59 pm. On the last day of the month, sunrise is at 7:53 am and sunset at 5:09 pm MST.
Sunshine
In December, the average sunshine is 5.9h.UV index
The months with the lowest UV index are January through March, October through December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a low health risk from unprotected exposure to Sun's UV rays for the average person.Note: A daily maximum UV index of 2 in December translates into the following instructions:
Most people can stay in the Sun for up to 1 hour without burning, apart from children that always must be protected from sun exposure. The mid-day Sun emits the most powerful UV radiation, so seek shade and minimize exposure. Employ a wide-brim hat for potent defense against up to 50% of UV rays. Be aware! The reflective nature of snow can magnify the Sun's UV radiation almost twofold.
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 many days does it rain in December?
How many days does it snow in December?
What is the month with the shortest days?
What is the average length of the day in December?
When is the sunrise / sunset in December?
How many hours of sunshine does Harrisville have in December?
When is the lowest UV index?
What is the UV index reading in December?
Average temperature in December
Harrisville, 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
Harrisville, 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
Harrisville, 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
Harrisville, 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
Harrisville, 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
Harrisville, 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
Harrisville, 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
Harrisville, 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
Harrisville, 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: 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
Harrisville, 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
Harrisville, 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
Harrisville, 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
Harrisville, 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).
Harrisville, Utah, USA
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