December weather forecastBig Piney, WY
December
Weather in December
December in Big Piney epitomizes the peak winter season with the yearly lows of 5°F (-15°C) and highs of only 23.7°F (-4.6°C). The snowfall records its annual maxima with 5.55" (141mm) expected across 14.5 days, making it the month with the most snowfall. The daylight is markedly reduced to 9.1 hours, matched by the shortest sunshine hours and days. This extreme weather is influenced by strong winds that average a peak of 9.4mph (15.1km/h) along with the highest relative humidity of the year at 84%. December marks the culmination of the year with its harsh winter conditions, chilly nights, snow-clad landscapes, and a serene and quiet atmosphere in Big Piney.Temperature
Big Piney's December weather, with an average high temperature of 23.7°F (-4.6°C) and an average low temperature of 5°F (-15°C), tends to be the coldest of the year.Humidity
In Big Piney, Wyoming, the average relative humidity in December is 84%.Rainfall
In Big Piney, in December, during 10.5 rainfall days, 0.71" (18mm) of precipitation is typically accumulated. Throughout the year, there are 109.9 rainfall days, and 10.59" (269mm) of precipitation is accumulated.Snowfall
Months with snowfall in Big Piney are January through June, September through December. In Big Piney, during December, snow falls for 14.5 days and regularly aggregates up to 5.55" (141mm) of snow. In Big Piney, during the entire year, snow falls for 89 days and aggregates up to 43.43" (1103mm) of snow.Daylight
With an average of 9h and 6min of daylight, December has the shortest days of the year.On the first day of December, sunrise is at 7:31 am and sunset at 4:48 pm. On the last day of the month, sunrise is at 7:50 am and sunset at 4:57 pm MST.
Sunshine
In Big Piney, the average sunshine in December is 6.4h.UV index
January through April, October through December, with an average maximum UV index of 2, are months with the lowest UV index. 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 daily high UV index of 2 during December translates into the following recommendations:
While sun exposure does not greatly affect most, individuals with fair skin, babies, and children always need vigilant safeguarding. Around midday, solar radiation is most harmful; hence, exposure should be limited. Boost your sun resistance with garments that are densely woven yet spacious. Be aware! The reflective nature of snow can magnify the Sun's UV radiation almost twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Big Piney, WY
- Average high temperature in December: 23.7°F
The warmest month (with the highest average high temperature) is July (76.8°F).
The month with the lowest average high temperature is December (23.7°F).
- Average low temperature in December: 5°F
The month with the highest average low temperature is July (52°F).
The coldest month (with the lowest average low temperature) is December (5°F).
Average pressure in December
Big Piney, WY
- Average pressure in December: 30.25"Hg
The month with the highest atmospheric pressure is January (30.28"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in December
Big Piney, WY
- Average wind speed in December: 5.3mph
The windiest month (with the highest average wind speed) is June (7mph).
The calmest month (with the lowest average wind speed) is December (5.3mph).
Average humidity in December
Big Piney, WY
- Average humidity in December: 84%
The months with the highest relative humidity are January and February (87%).
The month with the lowest relative humidity is August (39%).
Average rainfall in December
Big Piney, WY
- Average rainfall in December: 0.71"
The wettest month (with the highest rainfall) is May (1.65").
The driest months (with the least rainfall) are July and August (0.63").
Average rainfall days in December
Big Piney, WY
- Average rainfall days in December: 10.5 days
The month with the highest number of rainy days is May (14.3 days).
The month with the least rainy days is November (6.9 days).
Average snowfall in December
Big Piney, WY
- Average snowfall in December: 5.55"
The month with the highest snowfall is April (7.36").
The months with the least snowfall are July and August (0").
Average snowfall days in December
Big Piney, WY
- Average snowfall days in December: 14.5 days
The months with the highest number of snowfall days are February and March (15.1 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in December /
Average sunshine in December
Big Piney, 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 24min
The month with the most sunshine is July (Average sunshine: 12h and 0min).
The month with the least sunshine is January (Average sunshine: 6h and 12min).
Average sunshine days in December
Big Piney, WY
- Average sunshine days in December: 15.1 days
The month with the most sunshine days is October (19.6 days).
The month with the least sunshine days is May (10.9 days).
Average UV index in December
Big Piney, 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
Big Piney, WY
- Average cloud cover in December: 36
The month with the most cloud cover is February (Cloud cover 41).
The month with the least cloud cover is August (Cloud cover 12).
Average visibility in December
Big Piney, WY
- Average visibility in December: 5mi
The months with the highest visibility are April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January and February (4mi).
