December weather forecastPiedmont, WY
December
Weather in December
December, the first month of the winter in Piedmont, is also a subzero cold month, with an average temperature varying between 26.6°F (-3°C) and 12°F (-11.1°C).Temperature
With average temperatures fluctuating between a high of 26.6°F (-3°C) and a low of 12°F (-11.1°C), December stands out as the coldest month.Humidity
The average relative humidity in December is 81%.Rainfall
In Piedmont, during December, the rain falls for 4.5 days and regularly aggregates up to 0.47" (12mm) of precipitation. In Piedmont, during the entire year, the rain falls for 78.2 days and collects up to 7.48" (190mm) of precipitation.Snowfall
Months with snowfall are January through June, September through December. In Piedmont, in December, snow falls for 9.2 days, with typically accumulated 3.5" (89mm) of snow. Throughout the year, there are 58.7 snowfall days, and 24.72" (628mm) of snow is accumulated.Daylight
December has the shortest days of the year, with an average of 9h and 18min of daylight.On the first day of the month, sunrise is at 7:29 am and sunset at 4:54 pm. On the last day of December, sunrise is at 7:47 am and sunset at 5:03 pm MST.
Sunshine
December has the least sunshine of the year, with an average of 6.3h of sunshine.UV index
The months with the lowest UV index are January through April, October through December, with an average maximum UV index of 2. A UV Index reading of 2, and below, represents a low threat to health from exposure to the Sun's UV radiation for average individuals.Note: In December, the average maximum UV index of 2 translates into the following recommendations:
While extended sun exposure does not significantly affect most people, those with sensitive skin, children, and infants should always be protected. For skin protection, it's recommended to minimize Sun exposure during its peak hours around midday. To cut down UV radiation exposure by about half, sport a wide-brim hat. Take into account! The reflection from snow can nearly double the Sun's UV radiation intensity.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Piedmont, WY
- Average high temperature in December: 26.6°F
The warmest month (with the highest average high temperature) is July (79.3°F).
The month with the lowest average high temperature is December (26.6°F).
- Average low temperature in December: 12°F
The month with the highest average low temperature is July (55.9°F).
The coldest months (with the lowest average low temperature) are January and December (12°F).
Average pressure in December
Piedmont, WY
- Average pressure in December: 30.24"Hg
The month with the highest atmospheric pressure is January (30.29"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).
Average wind speed in December
Piedmont, WY
- Average wind speed in December: 9.3mph
The windiest month (with the highest average wind speed) is April (10.9mph).
The calmest month (with the lowest average wind speed) is July (8mph).
Average humidity in December
Piedmont, WY
- Average humidity in December: 81%
The months with the highest relative humidity are January and February (83%).
The months with the lowest relative humidity are July and August (35%).
Average rainfall in December
Piedmont, WY
- Average rainfall in December: 0.47"
The wettest month (with the highest rainfall) is May (1.18").
The driest month (with the least rainfall) is January (0.35").
Average rainfall days in December
Piedmont, WY
- Average rainfall days in December: 4.5 days
The month with the highest number of rainy days is May (11.4 days).
The month with the least rainy days is November (3.5 days).
Average snowfall in December
Piedmont, WY
- Average snowfall in December: 3.5"
The month with the highest snowfall is March (5.04").
The months with the least snowfall are July and August (0").
Average snowfall days in December
Piedmont, WY
- Average snowfall days in December: 9.2 days
The month with the highest number of snowfall days is February (10.4 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in December /
Average sunshine in December
Piedmont, 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: 6h and 18min
The month with the most sunshine is July (Average sunshine: 11h and 54min).
The month with the least sunshine is December (Average sunshine: 6h and 18min).
Average sunshine days in December
Piedmont, WY
- Average sunshine days in December: 20.2 days
The months with the most sunshine days are January and October (22.3 days).
The month with the least sunshine days is July (15.9 days).
Average UV index in December
Piedmont, 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
Piedmont, WY
- Average cloud cover in December: 35
The month with the most cloud cover is February (Cloud cover 37).
The month with the least cloud cover is August (Cloud cover 12).
Average visibility in December
Piedmont, WY
- Average visibility in December: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
