December weather forecastSundance, WY
December
Weather in December
December in Sundance paints a picture straight out of a winter postcard. Historically, December matches January's weather trends, characterized by an average minimum temperature of 11.7°F (-11.3°C). The increased snowfall makes way for a host of winter activities, the town reveling in its winter coat. Despite smaller increments of daylight hours, December beholds a picturesque charm, snow-covered landscapes illuminating under the winter sun. As the year concludes, January's weather patterns hint at a similarly frosty future.Temperature
With an average high-temperature of 26.2°F (-3.2°C) and an average low-temperature of 11.7°F (-11.3°C), December is the coldest month in Sundance.Humidity
The average relative humidity in December is 81%.Rainfall
The month with the least rainfall in Sundance is December, when the rain falls for 4.3 days and typically collects 0.67" (17mm) of precipitation.Snowfall
January through June, September through December are months with snowfall in Sundance. In Sundance, in December, during 11.7 snowfall days, 3.98" (101mm) of snow is typically accumulated. In Sundance, during the entire year, snow falls for 80.3 days and aggregates up to 41.73" (1060mm) of snow.Daylight
With an average of 8h and 54min of daylight, December has the shortest days of the year in Sundance.On the first day of the month, sunrise is at 7:14 am and sunset at 4:19 pm. On the last day of December, in Sundance, sunrise is at 7:33 am and sunset at 4:28 pm MST.
Sunshine
In Sundance, the average sunshine in December is 5.8h.UV index
January through April, October through December, with an average maximum UV index of 2, are months with the lowest UV index in Sundance. A UV Index estimate of 2, and below, represents a minimal health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.Note: A daily maximum UV index of 2 in December translates into the following instructions:
Extended sunlight exposure does not pose significant problems for most people, except for children, infants, and people with fair skin who always need shielding. Being exposed to the midday Sun can have harmful effects due to strong UV radiation; always take precautions. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage. Watch out! The Sun's UV radiation can be nearly magnified twofold due to snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Sundance, WY
- Average high temperature in December: 26.2°F
The warmest month (with the highest average high temperature) is July (79.2°F).
The month with the lowest average high temperature is December (26.2°F).
- Average low temperature in December: 11.7°F
The month with the highest average low temperature is July (57.7°F).
The coldest month (with the lowest average low temperature) is February (10.8°F).
Average pressure in December
Sundance, WY
- Average pressure in December: 30.13"Hg
The months with the highest atmospheric pressure are January and December (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.84"Hg).
Average wind speed in December
Sundance, WY
- Average wind speed in December: 8.3mph
The windiest month (with the highest average wind speed) is April (10.3mph).
The calmest month (with the lowest average wind speed) is August (7.8mph).
Average humidity in December
Sundance, WY
- Average humidity in December: 81%
The month with the highest relative humidity is February (84%).
The months with the lowest relative humidity are August and September (53%).
Average rainfall in December
Sundance, WY
- Average rainfall in December: 0.67"
The wettest months (with the highest rainfall) are June and July (2.68").
The driest month (with the least rainfall) is December (0.67").
Average rainfall days in December
Sundance, WY
- Average rainfall days in December: 4.3 days
The month with the highest number of rainy days is June (17.9 days).
The month with the least rainy days is February (3.7 days).
Average snowfall in December
Sundance, WY
- Average snowfall in December: 3.98"
The month with the highest snowfall is April (8.82").
The months with the least snowfall are July and August (0").
Average snowfall days in December
Sundance, WY
- Average snowfall days in December: 11.7 days
The month with the highest number of snowfall days is January (12.8 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in December /
Average sunshine in December
Sundance, WY
- Average daylight in December: 8h and 54min
The month with the longest days is June (Average daylight: 15h and 30min).
The month with the shortest days is December (Average daylight: 8h and 54min).
- Average sunshine in December: 5h and 48min
The month with the most sunshine is August (Average sunshine: 11h and 48min).
The month with the least sunshine is February (Average sunshine: 5h and 36min).
Average sunshine days in December
Sundance, WY
- Average sunshine days in December: 17.9 days
The month with the most sunshine days is November (18.7 days).
The month with the least sunshine days is June (9.7 days).
Average UV index in December
Sundance, WY
- Average UV index in December: 2
The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, February, March, April, October, November and December (UV index 2).
Average cloud cover in December
Sundance, WY
- Average cloud cover in December: 40
The month with the most cloud cover is February (Cloud cover 43).
The month with the least cloud cover is August (Cloud cover 17).
Average visibility in December
Sundance, 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).
