December weather forecastMcFadden, WY
December
Weather in December
The first month of the winter, December, is also a subzero cold month in McFadden, Wyoming, with an average temperature varying between 28.2°F (-2.1°C) and 14.2°F (-9.9°C).Temperature
In McFadden, the lowest temperatures are generally noted in December, averaging a high of 28.2°F (-2.1°C) and a low of 14.2°F (-9.9°C).Humidity
The average relative humidity in December is 75%.Rainfall
In McFadden, in December, it is raining for 6 days, with typically 0.75" (19mm) of accumulated precipitation. Throughout the year, there are 110.9 rainfall days, and 14.53" (369mm) of precipitation is accumulated.Snowfall
January through June, September through December are months with snowfall in McFadden, Wyoming. In McFadden, in December, snow falls for 11.8 days, with typically accumulated 4.96" (126mm) of snow. Throughout the year, in McFadden, there are 88.8 snowfall days, and 49.84" (1266mm) of snow is accumulated.Daylight
December has the shortest days of the year, with an average of 9h and 12min of daylight.On the first day of the month, sunrise is at 7:12 am and sunset at 4:35 pm. On the last day of December, in McFadden, sunrise is at 7:31 am and sunset at 4:44 pm MST.
Sunshine
The average sunshine in December is 6.6h.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 reading of 2, and below, represents a low threat to health from unprotected exposure to Sun's UV rays for average individuals.Note: The daily high UV index of 2 in December translates into this advice:
Those with sensitive skin, infants, and children require constant safeguarding from prolonged sun exposure. The Sun is at its harshest during midday; protect yourself by staying in shaded areas and minimizing exposure. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays. Heed this! Snow reflection can almost augment the UV radiation of the sun by double.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
McFadden, WY
- Average high temperature in December: 28.2°F
The warmest month (with the highest average high temperature) is July (77°F).
The month with the lowest average high temperature is December (28.2°F).
- Average low temperature in December: 14.2°F
The month with the highest average low temperature is July (53.6°F).
The coldest month (with the lowest average low temperature) is December (14.2°F).
Average pressure in December
McFadden, WY
- Average pressure in December: 30.15"Hg
The month with the highest atmospheric pressure is January (30.18"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).
Average wind speed in December
McFadden, WY
- Average wind speed in December: 13.6mph
The windiest month (with the highest average wind speed) is January (14.1mph).
The calmest month (with the lowest average wind speed) is July (8.9mph).
Average humidity in December
McFadden, WY
- Average humidity in December: 75%
The month with the highest relative humidity is February (76%).
The month with the lowest relative humidity is August (43%).
Average rainfall in December
McFadden, WY
- Average rainfall in December: 0.75"
The wettest month (with the highest rainfall) is May (2.52").
The driest month (with the least rainfall) is January (0.51").
Average rainfall days in December
McFadden, WY
- Average rainfall days in December: 6 days
The month with the highest number of rainy days is July (14.9 days).
The month with the least rainy days is November (4 days).
Average snowfall in December
McFadden, WY
- Average snowfall in December: 4.96"
The month with the highest snowfall is April (9.84").
The months with the least snowfall are July and August (0").
Average snowfall days in December
McFadden, WY
- Average snowfall days in December: 11.8 days
The month with the highest number of snowfall days is April (13.7 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in December /
Average sunshine in December
McFadden, WY
- Average daylight in December: 9h and 12min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in December: 6h and 36min
The month with the most sunshine is July (Average sunshine: 11h and 42min).
The month with the least sunshine is February (Average sunshine: 6h and 30min).
Average sunshine days in December
McFadden, WY
- Average sunshine days in December: 17.6 days
The month with the most sunshine days is January (19.4 days).
The month with the least sunshine days is May (9 days).
Average UV index in December
McFadden, 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
McFadden, 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 September (Cloud cover 16).
Average visibility in December
McFadden, 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).
