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
A shift in Riverton's weather is observed as November turns into December, with the average high temperature reducing from a chilly 45.3°F (7.4°C) to a cold 33.1°F (0.6°C). Throughout December, the average low-temperature records at a subzero cold 18.9°F (-7.3°C).Humidity
In December, the average relative humidity is 80%.Rainfall
In December, in Riverton, Utah, the rain falls for 6.8 days. Throughout December, 1.3" (33mm) of precipitation is accumulated. Throughout the year, there are 69.6 rainfall days, and 9.06" (230mm) of precipitation is accumulated.Snowfall
Months with snowfall in Riverton are January through April, October through December. In Riverton, in December, snow falls for 8.9 days, with typically accumulated 6.89" (175mm) of snow. Throughout the year, in Riverton, there are 37.1 snowfall days, and 28.94" (735mm) of snow is accumulated.Daylight
The month with the shortest days in Riverton is December, with an average of 9h and 18min of daylight.On the first day of December, sunrise is at 7:32 am and sunset at 5:01 pm. On the last day of the month, sunrise is at 7:51 am and sunset at 5:11 pm MST.
Sunshine
In Riverton, Utah, the average sunshine in December is 5.7h.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 minimal health vulnerability from exposure to the Sun's UV rays for the average person.Note: An average UV index of 2 in December transforms into this advice:
Protection from prolonged sun exposure is necessary for babies, children, and individuals with sensitive skin. During midday, the Sun's radiation is strongest, and it's advisable to reduce direct exposure. A hat with a broad brim is indispensable, filtering out up to half of UV rays. Forewarned is forearmed! The Sun's UV radiation can be almost doubled in intensity by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is December in Riverton?
What is the average humidity in December in Riverton?
How many days does it rain in December in Riverton?
How much does it snow in Riverton in December?
What is the month with the shortest days in Riverton?
What is the average length of the day in December in Riverton?
What time are sunrise and sunset in December in Riverton?
How long on average sun shines in December in Riverton?
When is the lowest UV index in Riverton?
What is the UV index reading in December in Riverton?
Average temperature in December
Riverton, UT
- Average high temperature in December: 33.1°F
The warmest month (with the highest average high temperature) is July (85.6°F).
The month with the lowest average high temperature is January (32.5°F).
- Average low temperature in December: 18.9°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 (17.1°F).
Average pressure in December
Riverton, UT
- Average pressure in December: 30.22"Hg
The month with the highest atmospheric pressure is January (30.27"Hg).
The month with the lowest atmospheric pressure is June (29.87"Hg).
Average wind speed in December
Riverton, UT
- Average wind speed in December: 5.5mph
The windiest months (with the highest average wind speed) are March and April (6.3mph).
The calmest month (with the lowest average wind speed) is January (4.9mph).
Average humidity in December
Riverton, UT
- Average humidity in December: 80%
The month with the highest relative humidity is January (85%).
The month with the lowest relative humidity is July (37%).
Average rainfall in December
Riverton, UT
- Average rainfall in December: 1.3"
The wettest month (with the highest rainfall) is February (1.38").
The driest month (with the least rainfall) is June (0.31").
Average rainfall days in December
Riverton, UT
- Average rainfall days in December: 6.8 days
The month with the highest number of rainy days is April (8.3 days).
The month with the least rainy days is June (4.1 days).
Average snowfall in December
Riverton, UT
- Average snowfall in December: 6.89"
The month with the highest snowfall is January (8.27").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
Riverton, UT
- Average snowfall days in December: 8.9 days
The month with the highest number of snowfall days is January (9.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Riverton, UT
- Average daylight in December: 9h and 2min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in December: 5h and 4min
The month with the most sunshine is August (Average sunshine: 12h and 0min).
The month with the least sunshine is January (Average sunshine: 5h and 24min).
Average sunshine days in December
Riverton, UT
- Average sunshine days in December: 19.5 days
The month with the most sunshine days is October (24.9 days).
The month with the least sunshine days is February (17.3 days).
Average UV index in December
Riverton, UT
- Average UV index in December: 2
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in December
Riverton, UT
- Average cloud cover in December: 40
The month with the most cloud cover is February (Cloud cover 42).
The month with the least cloud cover is August (Cloud cover 10).
Average visibility in December
Riverton, 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).
Riverton, Utah, USA
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