December weather forecastMcKinnon, WY
December
Weather in December
December, the first month of the winter in McKinnon, is still a freezing cold month, with an average temperature varying between 12.2°F (-11°C) and 27°F (-2.8°C).Temperature
McKinnon notes the coldest temperatures in December, with a high average of 27°F (-2.8°C) and a low of 12.2°F (-11°C).Humidity
In December, the average relative humidity is 76%.Rainfall
In McKinnon, Wyoming, in December, during 5.5 rainfall days, 0.79" (20mm) of precipitation is typically accumulated. Throughout the year, there are 93.9 rainfall days, and 14.17" (360mm) of precipitation is accumulated.Snowfall
January through June, September through December are months with snowfall. In McKinnon, in December, during 13.4 snowfall days, 6.18" (157mm) of snow is typically accumulated. Throughout the year, there are 84.4 snowfall days, and 56.22" (1428mm) of snow is accumulated.Daylight
December has the shortest days of the year in McKinnon, with an average of 9h and 18min of daylight.On the first day of December in McKinnon, sunrise is at 7:25 am and sunset at 4:51 pm. On the last day of the month, sunrise is at 7:44 am and sunset at 5:01 pm MST.
Sunshine
January and December, with an average of 6.4h of sunshine, are months with the least sunshine in McKinnon, Wyoming.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 estimate of 2, and below, represents a minimal health hazard from unsafe exposure to UV radiation for the ordinary person.Note: An average maximum UV index of 2 in December leads to these recommendations:
The majority are not significantly affected by prolonged sun exposure. Infants, children, and those with fair skin must always have protection. The solar radiation around mid-day is intense; avoid the Sun and stay safe. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim. Be attentive! The reflective property of snow can nearly double the Sun's UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
McKinnon, WY
- Average high temperature in December: 27°F
The warmest month (with the highest average high temperature) is July (75°F).
The month with the lowest average high temperature is December (27°F).
- Average low temperature in December: 12.2°F
The month with the highest average low temperature is July (53.2°F).
The coldest month (with the lowest average low temperature) is December (12.2°F).
Average pressure in December
McKinnon, WY
- Average pressure in December: 30.23"Hg
The month with the highest atmospheric pressure is January (30.28"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).
Average wind speed in December
McKinnon, WY
- Average wind speed in December: 8.1mph
The windiest month (with the highest average wind speed) is April (9.4mph).
The calmest month (with the lowest average wind speed) is July (6.5mph).
Average humidity in December
McKinnon, WY
- Average humidity in December: 76%
The month with the highest relative humidity is February (79%).
The months with the lowest relative humidity are July and August (40%).
Average rainfall in December
McKinnon, WY
- Average rainfall in December: 0.79"
The wettest month (with the highest rainfall) is May (2.17").
The driest month (with the least rainfall) is January (0.67").
Average rainfall days in December
McKinnon, WY
- Average rainfall days in December: 5.5 days
The month with the highest number of rainy days is May (13.2 days).
The month with the least rainy days is November (3 days).
Average snowfall in December
McKinnon, WY
- Average snowfall in December: 6.18"
The month with the highest snowfall is March (9.57").
The months with the least snowfall are July and August (0").
Average snowfall days in December
McKinnon, WY
- Average snowfall days in December: 13.4 days
The month with the highest number of snowfall days is February (13.7 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in December /
Average sunshine in December
McKinnon, 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 24min
The months with the most sunshine are July and August (Average sunshine: 11h and 36min).
The months with the least sunshine are January and December (Average sunshine: 6h and 24min).
Average sunshine days in December
McKinnon, WY
- Average sunshine days in December: 17.5 days
The month with the most sunshine days is November (19.9 days).
The month with the least sunshine days is May (11.5 days).
Average UV index in December
McKinnon, 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
McKinnon, WY
- Average cloud cover in December: 32
The month with the most cloud cover is February (Cloud cover 36).
The month with the least cloud cover is September (Cloud cover 15).
Average visibility in December
McKinnon, WY
- Average visibility in December: 6mi
The months with the highest visibility are January, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is February (5mi).
