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 month of December, characterized by an average high of 43.9°F (6.6°C) and a low of 28.9°F (-1.7°C), is recognized as the coldest.Humidity
In Rockville, the average relative humidity in December is 61%.Rainfall
In Rockville, during December, the rain falls for 6.1 days and regularly aggregates up to 1.06" (27mm) of precipitation. Throughout the year, there are 73.7 rainfall days, and 9.88" (251mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through April, November and December. In Rockville, Utah, in December, snow falls for 5.9 days, with typically accumulated 4.65" (118mm) of snow. Throughout the year, there are 24 snowfall days, and 21.93" (557mm) of snow is accumulated.Daylight
December has the shortest days of the year, with an average of 9h and 42min of daylight.On the first day of the month, sunrise is at 7:27 am and sunset at 5:15 pm. On the last day of December, sunrise is at 7:45 am and sunset at 5:25 pm MST.
Sunshine
The months with the least sunshine in Rockville are January and December, with an average of 7h of sunshine.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 of 2, and less, symbolizes a low health risk from exposure to the Sun's UV rays for the average person.Note: In December, an average UV index of 2 transforms into the following instructions:
While many people can endure lengthy sun exposure, it remains imperative to safeguard babies, children, and fair-skinned individuals. Direct Sun exposure should be minimized especially during midday when radiation is most intense. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays. Take careful note! The UV radiation of the Sun can be nearly doubled by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What time of the year is the coldest?
How cold is December?
What is the average humidity in December?
How many days does it rain in December in Rockville?
How much does it snow in December?
What is the month with the shortest days?
How many hours of daylight does Rockville have in December?
When is the sunrise / sunset in December?
What is the month with the least sunshine?
How many hours of sunshine does Rockville have in December?
What are the months with the lowest UV index?
How high is the UV index in December?
Average temperature in December
Rockville, UT
- Average high temperature in December: 43.9°F
The warmest month (with the highest average high temperature) is July (90°F).
The month with the lowest average high temperature is December (43.9°F).
- Average low temperature in December: 28.9°F
The month with the highest average low temperature is July (69.4°F).
The coldest months (with the lowest average low temperature) are January and December (28.9°F).
Average pressure in December
Rockville, UT
- Average pressure in December: 30.14"Hg
The month with the highest atmospheric pressure is January (30.19"Hg).
The month with the lowest atmospheric pressure is June (29.84"Hg).
Average wind speed in December
Rockville, UT
- Average wind speed in December: 5.3mph
The windiest months (with the highest average wind speed) are April and May (7.5mph).
The calmest month (with the lowest average wind speed) is December (5.3mph).
Average humidity in December
Rockville, UT
- Average humidity in December: 61%
The month with the highest relative humidity is January (64%).
The month with the lowest relative humidity is June (20%).
Average rainfall in December
Rockville, UT
- Average rainfall in December: 1.06"
The wettest month (with the highest rainfall) is March (1.14").
The driest month (with the least rainfall) is June (0.16").
Average rainfall days in December
Rockville, UT
- Average rainfall days in December: 6.1 days
The month with the highest number of rainy days is July (10.9 days).
The month with the least rainy days is June (2.3 days).
Average snowfall in December
Rockville, UT
- Average snowfall in December: 4.65"
The month with the highest snowfall is February (6.06").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in December
Rockville, UT
- Average snowfall days in December: 5.9 days
The months with the highest number of snowfall days are February and December (5.9 days).
The months with the least snowfall days are June, July, August, September and October (0 days).
Average daylight in December /
Average sunshine in December
Rockville, UT
- Average daylight in December: 9h and 4min
The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 42min).
- Average sunshine in December: 7h and 0min
The months with the most sunshine are June and July (Average sunshine: 11h and 54min).
The months with the least sunshine are January and December (Average sunshine: 7h and 0min).
Average sunshine days in December
Rockville, UT
- Average sunshine days in December: 21.6 days
The month with the most sunshine days is June (25.3 days).
The month with the least sunshine days is July (13.8 days).
Average UV index in December
Rockville, UT
- Average UV index in December: 2
The month with the highest UV index is 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
Rockville, UT
- Average cloud cover in December: 22
The month with the most cloud cover is December (Cloud cover 22).
The month with the least cloud cover is June (Cloud cover 6).
Average visibility in December
Rockville, UT
- Average visibility in December: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Rockville, Utah, USA
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