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
Joy's December weather comes with a decrease in average high-temperatures, moving from a cool 50°F (10°C) in November to a cold 37.2°F (2.9°C). Throughout December, an average nighttime temperature of 24.1°F (-4.4°C) is experienced.Humidity
In Joy, the average relative humidity in December is 72%.Rainfall
In Joy, in December, it is raining for 6.4 days, with typically 0.71" (18mm) of accumulated precipitation. In Joy, during the entire year, the rain falls for 82.6 days and collects up to 7.01" (178mm) of precipitation.Snowfall
Months with snowfall are January through April, October through December. December is the month with the most snowfall in Joy. Snow falls for 8.2 days and accumulates 3.98" (101mm) of snow.Daylight
December has the shortest days of the year in Joy, with an average of 9h and 24min of daylight.On the first day of the month, sunrise is at 7:34 am and sunset at 5:08 pm. On the last day of December, sunrise is at 7:52 am and sunset at 5:18 pm MST.
Sunshine
In December, the average sunshine is 6.4h.UV index
The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2. A UV Index reading of 2, and below, represents a low threat to health from unsafe exposure to UV radiation for ordinary individuals.Note: In December, an average UV index of 2 transforms into the following instructions:
Although the majority can endure up to an hour in the sun without burns, children always require sun protection. The Sun's harshest UV rays are around midday; it's wise to seek shade and limit time outdoors. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly. Be informed! The Sun's UV radiation can be nearly doubled due to the reflection from 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 in Joy?
How much does it rain in December?
When does it snow the most?
How many days does it snow in December?
What is the month with the shortest days?
How many hours of daylight does Joy have in December?
When are sunrise and sunset in December?
How long on average sun shines in December?
When is the lowest UV index in Joy?
What is the UV index reading in December?
Average temperature in December
Joy, UT
- Average high temperature in December: 37.2°F
The warmest month (with the highest average high temperature) is July (91.8°F).
The month with the lowest average high temperature is January (36.7°F).
- Average low temperature in December: 24.1°F
The month with the highest average low temperature is July (68.7°F).
The coldest month (with the lowest average low temperature) is January (22.8°F).
Average pressure in December
Joy, UT
- Average pressure in December: 30.19"Hg
The month with the highest atmospheric pressure is January (30.25"Hg).
The month with the lowest atmospheric pressure is June (29.86"Hg).
Average wind speed in December
Joy, UT
- Average wind speed in December: 5.4mph
The windiest month (with the highest average wind speed) is June (8.8mph).
The calmest month (with the lowest average wind speed) is January (4.7mph).
Average humidity in December
Joy, UT
- Average humidity in December: 72%
The month with the highest relative humidity is January (78%).
The month with the lowest relative humidity is June (24%).
Average rainfall in December
Joy, UT
- Average rainfall in December: 0.71"
The wettest month (with the highest rainfall) is March (0.91").
The driest month (with the least rainfall) is June (0.24").
Average rainfall days in December
Joy, UT
- Average rainfall days in December: 6.4 days
The month with the highest number of rainy days is April (10 days).
The month with the least rainy days is June (3.9 days).
Average snowfall in December
Joy, UT
- Average snowfall in December: 3.98"
The month with the highest snowfall is December (3.98").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
Joy, UT
- Average snowfall days in December: 8.2 days
The month with the highest number of snowfall days is December (8.2 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Joy, UT
- Average daylight in December: 9h and 2min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in December: 6h and 2min
The month with the most sunshine is August (Average sunshine: 11h and 54min).
The month with the least sunshine is January (Average sunshine: 6h and 18min).
Average sunshine days in December
Joy, UT
- Average sunshine days in December: 19.5 days
The month with the most sunshine days is June (24.1 days).
The month with the least sunshine days is February (16.3 days).
Average UV index in December
Joy, UT
- Average UV index in December: 2
The months with the highest UV index are June and July (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in December
Joy, UT
- Average cloud cover in December: 33
The month with the most cloud cover is December (Cloud cover 33).
The month with the least cloud cover is August (Cloud cover 9).
Average visibility in December
Joy, 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).
Joy, Utah, USA
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