Contents
- Weather in December
- Frequently asked questions
- Average temperature in December
- Average pressure in December
- Average wind speed in December
- Average humidity in December
- Average rainfall in December
- Average rainfall days in December
- Average snowfall in December
- Average snowfall days in December
- Average daylight in December
- Average sunshine in December
- Average sunshine days in December
- Average UV index in December
- Average cloud cover in December
- Average visibility in December
Weather in December
Temperature
Temperature records mark December as the coldest month, with highs averaging 28.6°F (-1.9°C) and lows at 15.1°F (-9.4°C).Humidity
In Powder River, the average relative humidity in December is 76%.Rainfall
In Powder River, during December, the rain falls for 3.3 days and regularly aggregates up to 0.63" (16mm) of precipitation. Throughout the year, in Powder River, there are 81 rainfall days, and 8.98" (228mm) of precipitation is accumulated.Snowfall
Months with snowfall in Powder River are January through May, September through December. In Powder River, Wyoming, during December, snow falls for 9.8 days and regularly aggregates up to 4.21" (107mm) of snow. Throughout the year, in Powder River, Wyoming, there are 62.6 snowfall days, and 31.65" (804mm) 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 7:20 am and sunset at 4:34 pm. On the last day of December, sunrise is at 7:39 am and sunset at 4:43 pm MST.
Sunshine
The average sunshine in December in Powder River is 6.5h.UV index
January through March, October through December, with an average maximum UV index of 2, are months with the lowest UV index in Powder River. A UV Index of 2, and less, symbolizes a low health risk from exposure to the Sun's UV radiation for ordinary individuals.Note: The maximum daily UV index of 2 during December translates into the following directions:
Despite the majority tolerating prolonged sun exposure, those with sensitive skin, infants, and children demand continual protection. Minimize direct exposure to the Sun during midday when its radiation is at its peak. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades. Be aware! The intensity of the Sun's UV radiation can be amplified nearly twice due to snow reflection.
Frequently asked questions
What month is the coldest in Powder River?
How cold is December in Powder River?
What is the average humidity in December in Powder River?
How many days does it rain in December in Powder River?
How much does it snow in Powder River in December?
What is the month with the shortest days in Powder River?
What is the average length of the day in December in Powder River?
When are sunrise and sunset in December in Powder River?
How many hours of sunshine does Powder River have in December?
What are the months with the lowest UV index in Powder River?
What is the UV index intensity in December in Powder River?
Average temperature in December
Powder River, WY
- Average high temperature in December: 28.6°F
The warmest month (with the highest average high temperature) is July (85.1°F).
The month with the lowest average high temperature is December (28.6°F).
- Average low temperature in December: 15.1°F
The month with the highest average low temperature is July (61.2°F).
The coldest month (with the lowest average low temperature) is December (15.1°F).
Average pressure in December
Powder River, WY
- Average pressure in December: 30.16"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.85"Hg).
Average wind speed in December
Powder River, WY
- Average wind speed in December: 11.6mph
The windiest month (with the highest average wind speed) is January (11.9mph).
The calmest month (with the lowest average wind speed) is August (8.4mph).
Average humidity in December
Powder River, WY
- Average humidity in December: 76%
The month with the highest relative humidity is January (79%).
The month with the lowest relative humidity is August (36%).
Average rainfall in December
Powder River, WY
- Average rainfall in December: 0.63"
The wettest month (with the highest rainfall) is May (1.34").
The driest month (with the least rainfall) is August (0.35").
Average rainfall days in December
Powder River, WY
- Average rainfall days in December: 3.3 days
The month with the highest number of rainy days is May (10.9 days).
The month with the least rainy days is December (3.3 days).
Average snowfall in December
Powder River, WY
- Average snowfall in December: 4.21"
The month with the highest snowfall is March (5.55").
The months with the least snowfall are June, July and August (0").
Average snowfall days in December
Powder River, WY
- Average snowfall days in December: 9.8 days
The month with the highest number of snowfall days is February (11.3 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in December /
Average sunshine in December
Powder River, WY
- Average daylight in December: 9h and 1min
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 3min
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 12min).
Average sunshine days in December
Powder River, WY
- Average sunshine days in December: 19.9 days
The month with the most sunshine days is August (20.3 days).
The month with the least sunshine days is April (13.6 days).
Average UV index in December
Powder River, WY
- Average UV index in December: 2
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, March, October, November and December (UV index 2).
Average cloud cover in December
Powder River, WY
- Average cloud cover in December: 31
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
Powder River, 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).
Powder River, Wyoming, USA
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