December weather forecastRiverside, WY
December
Weather in December
December, the first month of the winter in Riverside, is also a subzero cold month, with an average temperature varying between 25.7°F (-3.5°C) and 12.9°F (-10.6°C).Temperature
Riverside's December weather reaches an average high of 25.7°F (-3.5°C) and an average low of 12.9°F (-10.6°C), making it the coldest month.Humidity
In December, the average relative humidity is 82%.Rainfall
In December, in Riverside, the rain falls for 5.2 days. Throughout December, 1.02" (26mm) of precipitation is accumulated. Throughout the year, there are 105.5 rainfall days, and 13.9" (353mm) of precipitation is accumulated.Snowfall
January through June, September through December are months with snowfall in Riverside. In December, in Riverside, it is snowing for 15.7 days. Throughout December, 6.93" (176mm) of snow is accumulated. In Riverside, during the entire year, snow falls for 101 days and aggregates up to 54.49" (1384mm) of snow.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 7:13 am and sunset at 4:38 pm. On the last day of the month, sunrise is at 7:32 am and sunset at 4:48 pm MST.
Sunshine
In December, the average sunshine in Riverside, Wyoming, is 5.8h.UV index
The month with the lowest UV index is December, with an average maximum UV index of 1. A UV Index of 2, and less, symbolizes a minimal health hazard from unprotected exposure to Sun's UV rays for the ordinary person.Note: The maximum UV index of 1 during December leads to these instructions:
Prolonged exposure to sunlight rarely troubles the majority, but constant protection is vital for babies, children, and fair-skinned people. When the Sun is at its strongest around midday, find shade and limit exposure. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear. Note well! The intensity of the Sun's UV rays can be nearly doubled by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Riverside, WY
- Average high temperature in December: 25.7°F
The warmest month (with the highest average high temperature) is July (77.9°F).
The month with the lowest average high temperature is December (25.7°F).
- Average low temperature in December: 12.9°F
The month with the highest average low temperature is July (52.3°F).
The coldest months (with the lowest average low temperature) are January and December (12.9°F).
Average pressure in December
Riverside, WY
- Average pressure in December: 30.19"Hg
The month with the highest atmospheric pressure is January (30.23"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).
Average wind speed in December
Riverside, WY
- Average wind speed in December: 11.4mph
The windiest month (with the highest average wind speed) is November (11.8mph).
The calmest month (with the lowest average wind speed) is July (9.1mph).
Average humidity in December
Riverside, WY
- Average humidity in December: 82%
The month with the highest relative humidity is February (84%).
The month with the lowest relative humidity is August (41%).
Average rainfall in December
Riverside, WY
- Average rainfall in December: 1.02"
The wettest month (with the highest rainfall) is April (1.97").
The driest months (with the least rainfall) are August and September (0.75").
Average rainfall days in December
Riverside, WY
- Average rainfall days in December: 5.2 days
The month with the highest number of rainy days is May (14.7 days).
The month with the least rainy days is November (4.9 days).
Average snowfall in December
Riverside, WY
- Average snowfall in December: 6.93"
The month with the highest snowfall is April (9.76").
The months with the least snowfall are July and August (0").
Average snowfall days in December
Riverside, WY
- Average snowfall days in December: 15.7 days
The month with the highest number of snowfall days is February (17.1 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in December /
Average sunshine in December
Riverside, WY
- Average daylight in December: 9h and 18min
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 48min
The months with the most sunshine are July and August (Average sunshine: 11h and 48min).
The month with the least sunshine is February (Average sunshine: 5h and 30min).
Average sunshine days in December
Riverside, WY
- Average sunshine days in December: 14 days
The month with the most sunshine days is September (16.8 days).
The month with the least sunshine days is February (9.4 days).
Average UV index in December
Riverside, WY
- Average UV index in December: 1
The months with the highest UV index are June, July and August (UV index 5).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in December
Riverside, WY
- Average cloud cover in December: 42
The month with the most cloud cover is February (Cloud cover 47).
The months with the least cloud cover are August and September (Cloud cover 14).
Average visibility in December
Riverside, WY
- Average visibility in December: 5mi
The months with the highest visibility are March, April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, February and December (5mi).
