December weather forecastSuperior, WY
December
Weather in December
The first month of the winter, December, is still a freezing cold month in Superior, Wyoming, with an average temperature fluctuating between 25.7°F (-3.5°C) and 11.5°F (-11.4°C).Temperature
Superior's coldest month, December, generally records average temperatures ranging from a high of 25.7°F (-3.5°C) to a low of 11.5°F (-11.4°C).Humidity
The average relative humidity in December in Superior is 82%.Rainfall
In Superior, during December, the rain falls for 4.7 days and regularly aggregates up to 0.71" (18mm) of precipitation. Throughout the year, there are 93.5 rainfall days, and 10.31" (262mm) of precipitation is accumulated.Snowfall
Months with snowfall in Superior are January through June, September through December. In December, in Superior, Wyoming, it is snowing for 13.5 days. Throughout December, 4.37" (111mm) of snow is accumulated. In Superior, during the entire year, snow falls for 75.5 days and aggregates up to 30.16" (766mm) of snow.Daylight
The month with the shortest days is December, with an average of 9h and 12min of daylight.On the first day of December, sunrise is at 7:24 am and sunset at 4:46 pm. On the last day of the month, sunrise is at 7:43 am and sunset at 4:55 pm MST.
Sunshine
January and December, with an average of 5.9h of sunshine, are months with the least sunshine in Superior.UV index
January through April, October through December, with an average maximum UV index of 2, are months with the lowest UV index in Superior. A UV Index estimate of 2, and below, represents a minimal health hazard from exposure to the Sun's UV rays for average individuals.Note: The UV index of 2 during December translates into the following guidance:
Prolonged sun exposure generally does not trouble most people. However, it is vital to ensure protection for babies, children, and individuals with sensitive skin. Limiting exposure to the direct Sun during midday hours can help prevent harmful UV radiation effects. To cut down UV radiation exposure by about half, sport a wide-brim hat. Be cautious! The UV radiation from the Sun can be magnified almost twofold by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Superior, WY
- Average high temperature in December: 25.7°F
The warmest month (with the highest average high temperature) is July (81.5°F).
The month with the lowest average high temperature is December (25.7°F).
- Average low temperature in December: 11.5°F
The month with the highest average low temperature is July (60.4°F).
The coldest month (with the lowest average low temperature) is January (10.8°F).
Average pressure in December
Superior, WY
- Average pressure in December: 30.24"Hg
The month with the highest atmospheric pressure is January (30.28"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).
Average wind speed in December
Superior, WY
- Average wind speed in December: 9.3mph
The windiest month (with the highest average wind speed) is April (12.2mph).
The calmest month (with the lowest average wind speed) is August (8.7mph).
Average humidity in December
Superior, WY
- Average humidity in December: 82%
The month with the highest relative humidity is January (84%).
The months with the lowest relative humidity are July and August (31%).
Average rainfall in December
Superior, WY
- Average rainfall in December: 0.71"
The wettest month (with the highest rainfall) is May (1.5").
The driest month (with the least rainfall) is July (0.47").
Average rainfall days in December
Superior, WY
- Average rainfall days in December: 4.7 days
The month with the highest number of rainy days is May (13.8 days).
The month with the least rainy days is December (4.7 days).
Average snowfall in December
Superior, WY
- Average snowfall in December: 4.37"
The month with the highest snowfall is March (6.14").
The months with the least snowfall are July and August (0").
Average snowfall days in December
Superior, WY
- Average snowfall days in December: 13.5 days
The month with the highest number of snowfall days is December (13.5 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in December /
Average sunshine in December
Superior, WY
- Average daylight in December: 9h and 12min
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 54min
The months with the most sunshine are July and August (Average sunshine: 11h and 48min).
The months with the least sunshine are January and December (Average sunshine: 5h and 54min).
Average sunshine days in December
Superior, WY
- Average sunshine days in December: 16.4 days
The month with the most sunshine days is September (19.8 days).
The month with the least sunshine days is April (11.5 days).
Average UV index in December
Superior, WY
- 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, March, April, October, November and December (UV index 2).
Average cloud cover in December
Superior, WY
- Average cloud cover in December: 41
The month with the most cloud cover is February (Cloud cover 43).
The month with the least cloud cover is August (Cloud cover 13).
Average visibility in December
Superior, 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).
