December weather forecastOrpha, WY
December
Weather in December
The first month of the winter, December, is also a subzero cold month in Orpha, Wyoming, with an average temperature varying between 31.3°F (-0.4°C) and 18.1°F (-7.7°C).Temperature
Orpha witnesses the coldest weather in December, with temperatures averaging a high of 31.3°F (-0.4°C) and a low of 18.1°F (-7.7°C).Humidity
The average relative humidity in December is 71%.Rainfall
In December, the rain falls for 5 days. Throughout December, 0.71" (18mm) of precipitation is accumulated. In Orpha, during the entire year, the rain falls for 93.9 days and collects up to 12.09" (307mm) of precipitation.Snowfall
Months with snowfall are January through May, September through December. In Orpha, in December, snow falls for 11.5 days, with typically accumulated 4.21" (107mm) of snow. Throughout the year, there are 60.9 snowfall days, and 34.21" (869mm) of snow is accumulated.Daylight
December has the shortest days of the year, with an average of 9h and 6min of daylight.On the first day of the month, sunrise is at 7:13 am and sunset at 4:28 pm. On the last day of December, sunrise is at 7:32 am and sunset at 4:38 pm MST.
Sunshine
In Orpha, the average sunshine in December is 6.6h.UV index
The months with the lowest UV index are January, February, April, November and December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a minimal health vulnerability from unprotected exposure to Sun's UV rays for the average person.Note: The UV index of 2 during December leads to these advisories:
The majority are not significantly affected by prolonged sun exposure. Infants, children, and those with fair skin must always have protection. Solar radiation is at its peak intensity during midday, so it's advisable to stay indoors or in the shade. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit. Be alert! Nearly double the UV rays from the Sun can be reflected by snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Orpha, WY
- Average high temperature in December: 31.3°F
The warmest month (with the highest average high temperature) is July (83.8°F).
The month with the lowest average high temperature is December (31.3°F).
- Average low temperature in December: 18.1°F
The month with the highest average low temperature is July (61.3°F).
The coldest month (with the lowest average low temperature) is December (18.1°F).
Average pressure in December
Orpha, WY
- Average pressure in December: 30.14"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.85"Hg).
Average wind speed in December
Orpha, WY
- Average wind speed in December: 12.2mph
The windiest month (with the highest average wind speed) is January (12.9mph).
The calmest month (with the lowest average wind speed) is August (8.9mph).
Average humidity in December
Orpha, WY
- Average humidity in December: 71%
The month with the highest relative humidity is February (73%).
The month with the lowest relative humidity is August (40%).
Average rainfall in December
Orpha, WY
- Average rainfall in December: 0.71"
The wettest month (with the highest rainfall) is May (2.28").
The driest month (with the least rainfall) is September (0.43").
Average rainfall days in December
Orpha, WY
- Average rainfall days in December: 5 days
The month with the highest number of rainy days is May (15.2 days).
The month with the least rainy days is January (4.3 days).
Average snowfall in December
Orpha, WY
- Average snowfall in December: 4.21"
The month with the highest snowfall is April (5.59").
The months with the least snowfall are June, July and August (0").
Average snowfall days in December
Orpha, WY
- Average snowfall days in December: 11.5 days
The month with the highest number of snowfall days is February (12.2 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in December /
Average sunshine in December
Orpha, WY
- Average daylight in December: 9h and 6min
The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in December: 6h and 36min
The month with the most sunshine is July (Average sunshine: 12h and 0min).
The month with the least sunshine is February (Average sunshine: 6h and 18min).
Average sunshine days in December
Orpha, WY
- Average sunshine days in December: 18.4 days
The month with the most sunshine days is October (21.6 days).
The month with the least sunshine days is April (11.3 days).
Average UV index in December
Orpha, WY
- Average UV index in December: 2
The months with the highest UV index are July and August (UV index 6).
The months with the lowest UV index are January, February, April, November and December (UV index 2).
Average cloud cover in December
Orpha, WY
- Average cloud cover in December: 30
The month with the most cloud cover is February (Cloud cover 34).
The month with the least cloud cover is August (Cloud cover 13).
Average visibility in December
Orpha, 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).
