December weather forecastYanceys, WY
December
Weather in December
The first month of the winter, December, is also a subzero cold month in Yanceys, Wyoming, with an average temperature ranging between max 18.9°F (-7.3°C) and min 2.5°F (-16.4°C).Temperature
In Yanceys, Wyoming, December is the coldest month, with temperatures averaging a high of 18.9°F (-7.3°C) and a low of 2.5°F (-16.4°C).Humidity
The average relative humidity in December is 92%.Rainfall
In Yanceys, in December, it is raining for 4.8 days, with typically 1.85" (47mm) of accumulated precipitation. Throughout the year, there are 102.8 rainfall days, and 23.98" (609mm) of precipitation is accumulated.Snowfall
January through December are months with snowfall. In December, it is snowing for 24.2 days. Throughout December, 13.74" (349mm) of snow is accumulated. In Yanceys, during the entire year, snow falls for 186.1 days and aggregates up to 135.16" (3433mm) of snow.Daylight
The month with the shortest days is December, with an average of 8h and 48min of daylight.On the first day of the month, sunrise is at 7:40 am and sunset at 4:41 pm. On the last day of December, sunrise is at 7:59 am and sunset at 4:50 pm MST.
Sunshine
The month with the least sunshine is December, with an average of 3.6h of sunshine.UV index
January through April, October through December, with an average maximum UV index of 1, are months with the lowest UV index. A UV Index of 2, and less, symbolizes a low threat to health from exposure to the Sun's UV radiation for the average person.Note: The maximum UV index of 1 during December translates into these guidelines:
Protection from prolonged sun exposure is necessary for babies, children, and individuals with sensitive skin. Protect yourself from the midday Sun's peak UV radiation by minimizing exposure. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes. Warning! The reflection from snow can nearly magnify the Sun's UV radiation twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Yanceys, WY
- Average high temperature in December: 18.9°F
The warmest month (with the highest average high temperature) is July (70.9°F).
The month with the lowest average high temperature is December (18.9°F).
- Average low temperature in December: 2.5°F
The month with the highest average low temperature is July (43.2°F).
The coldest month (with the lowest average low temperature) is December (2.5°F).
Average pressure in December
Yanceys, WY
- Average pressure in December: 30.22"Hg
The month with the highest atmospheric pressure is January (30.23"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in December
Yanceys, WY
- Average wind speed in December: 6.6mph
The windiest months (with the highest average wind speed) are February and June (7.3mph).
The calmest month (with the lowest average wind speed) is May (6mph).
Average humidity in December
Yanceys, WY
- Average humidity in December: 92%
The months with the highest relative humidity are February and March (93%).
The months with the lowest relative humidity are July and August (51%).
Average rainfall in December
Yanceys, WY
- Average rainfall in December: 1.85"
The wettest month (with the highest rainfall) is May (3.15").
The driest month (with the least rainfall) is July (1.02").
Average rainfall days in December
Yanceys, WY
- Average rainfall days in December: 4.8 days
The month with the highest number of rainy days is May (16.9 days).
The month with the least rainy days is January (2.8 days).
Average snowfall in December
Yanceys, WY
- Average snowfall in December: 13.74"
The month with the highest snowfall is April (19.69").
The month with the least snowfall is July (0.24").
Average snowfall days in December
Yanceys, WY
- Average snowfall days in December: 24.2 days
The month with the highest number of snowfall days is March (25.6 days).
The month with the least snowfall days is July (0.4 days).
Average daylight in December /
Average sunshine in December
Yanceys, WY
- Average daylight in December: 8h and 48min
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 48min).
- Average sunshine in December: 3h and 36min
The month with the most sunshine is July (Average sunshine: 11h and 48min).
The month with the least sunshine is December (Average sunshine: 3h and 36min).
Average sunshine days in December
Yanceys, WY
- Average sunshine days in December: 7.6 days
The month with the most sunshine days is September (15.6 days).
The month with the least sunshine days is May (3.1 days).
Average UV index in December
Yanceys, WY
- Average UV index in December: 1
The month with the highest UV index is July (UV index 5).
The months with the lowest UV index are January, February, March, April, October, November and December (UV index 1).
Average cloud cover in December
Yanceys, WY
- Average cloud cover in December: 67
The month with the most cloud cover is February (Cloud cover 68).
The month with the least cloud cover is July (Cloud cover 15).
Average visibility in December
Yanceys, WY
- Average visibility in December: 4mi
The months with the highest visibility are June, July, August and September (6mi).
The month with the lowest visibility is February (3mi).
