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 beginning of December marks a decrease in the average high-temperature, transitioning from a frosty 44.1°F (6.7°C) in November to a subzero cold 31.1°F (-0.5°C). The nighttime temperature in Riverside, during December, averages of 19°F (-7.2°C).Humidity
In Riverside, the average relative humidity in December is 82%.Rainfall
In Riverside, in December, during 11.1 rainfall days, 1.61" (41mm) of precipitation is typically accumulated. Throughout the year, in Riverside, there are 120 rainfall days, and 15.43" (392mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, September through December. In Riverside, in December, snow falls for 13.4 days, with typically accumulated 9.29" (236mm) of snow. In Riverside, Utah, during the entire year, snow falls for 61.2 days and aggregates up to 42.91" (1090mm) of snow.Daylight
December has the shortest days of the year in Riverside, Utah, with an average of 9h and 12min of daylight.On the first day of the month, sunrise is at 7:37 am and sunset at 4:58 pm. On the last day of December, in Riverside, Utah, sunrise is at 7:55 am and sunset at 5:08 pm MST.
Sunshine
The average sunshine in December is 5.7h.UV index
In Riverside, the average daily maximum UV index in December is 2. A UV Index reading of 2, and below, represents a low health risk from unprotected exposure to Sun's UV rays for average individuals.Note: The daily high UV index of 2 during December translates into the following recommendations:
Those with sensitive skin, infants, and children require constant safeguarding from prolonged sun exposure. Direct exposure to the Sun during its peak hours around mid-day should be minimized for safety. To cut down UV radiation exposure by about half, sport a wide-brim hat. 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
How cold is it in Riverside in December?
What is the average humidity in December in Riverside?
How much does it rain in Riverside in December?
How many days does it snow in December in Riverside?
What is the month with the shortest days in Riverside?
How many hours of daylight does Riverside have in December?
What time are sunrise and sunset in December in Riverside?
How many hours of sunshine does Riverside have in December?
How high is the UV index in December in Riverside?
Average temperature in December
Riverside, UT
- Average high temperature in December: 31.1°F
The warmest month (with the highest average high temperature) is July (86.9°F).
The month with the lowest average high temperature is January (30.9°F).
- Average low temperature in December: 19°F
The month with the highest average low temperature is July (58.8°F).
The coldest month (with the lowest average low temperature) is January (17.8°F).
Average pressure in December
Riverside, UT
- Average pressure in December: 30.24"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
Riverside, UT
- Average wind speed in December: 4.6mph
The windiest month (with the highest average wind speed) is April (6.3mph).
The calmest month (with the lowest average wind speed) is January (4.2mph).
Average humidity in December
Riverside, UT
- Average humidity in December: 82%
The month with the highest relative humidity is January (87%).
The month with the lowest relative humidity is August (34%).
Average rainfall in December
Riverside, UT
- Average rainfall in December: 1.61"
The wettest month (with the highest rainfall) is February (2.05").
The driest month (with the least rainfall) is July (0.35").
Average rainfall days in December
Riverside, UT
- Average rainfall days in December: 11.1 days
The month with the highest number of rainy days is April (15.1 days).
The month with the least rainy days is July (5.5 days).
Average snowfall in December
Riverside, UT
- Average snowfall in December: 9.29"
The month with the highest snowfall is January (13.03").
The months with the least snowfall are June, July and August (0").
Average snowfall days in December
Riverside, UT
- Average snowfall days in December: 13.4 days
The month with the highest number of snowfall days is January (14.8 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in December /
Average sunshine in December
Riverside, UT
- Average daylight in December: 9h and 1min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in December: 5h and 4min
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 12min).
Average sunshine days in December
Riverside, UT
- Average sunshine days in December: 13.2 days
The month with the most sunshine days is July (21.6 days).
The month with the least sunshine days is February (10.1 days).
Average UV index in December
Riverside, UT
- Average UV index in December: 2
The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is January (UV index 1).
Average cloud cover in December
Riverside, UT
- Average cloud cover in December: 42
The month with the most cloud cover is February (Cloud cover 45).
The month with the least cloud cover is August (Cloud cover 10).
Average visibility in December
Riverside, UT
- Average visibility in December: 5mi
The months with the highest visibility are March, April, May, June, July, August, September, October and November (6mi).
The month with the lowest visibility is January (4mi).
Riverside, Utah, USA
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