December weather forecastAfton, WY
December
Weather in December
December rings in winter in Afton with the mercury dipping to its lowest and snowfall amassing to 15.51" (394mm). The city gets a white makeover and dives into the spirit of the Holiday season. Events associated with Christmas bring a festive ambiance all around. Despite the severe cold and heavy snowfall, the joyful cheer and vibrancy that December brings is singular and unmatched in its charm.Temperature
December is the coldest month, exhibiting average temperatures of 24.1°F (-4.4°C) at the peak and 6.6°F (-14.1°C) at the base.Humidity
In December, the average relative humidity is 90%.Rainfall
In December, in Afton, the rain falls for 6.2 days. Throughout December, 2.01" (51mm) of precipitation is accumulated. In Afton, during the entire year, the rain falls for 109.5 days and collects up to 21.61" (549mm) of precipitation.Snowfall
Months with snowfall are January through June, September through December. In December, it is snowing for 21.7 days. Throughout December, 15.51" (394mm) of snow is accumulated. Throughout the year, there are 126.9 snowfall days, and 106.65" (2709mm) 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 7:35 am and sunset at 4:50 pm. On the last day of December, sunrise is at 7:53 am and sunset at 5:00 pm MST.
Sunshine
In Afton, the average sunshine in December is 4.8h.UV index
January through March, November and December, with an average maximum UV index of 1, are months with the lowest UV index. A UV Index estimate of 2, and below, represents a minimal health vulnerability from unsafe exposure to UV radiation for ordinary individuals.Note: The daily maximum UV index of 1 in December interprets into the following advice:
Despite the majority tolerating prolonged sun exposure, those with sensitive skin, infants, and children demand continual protection. Direct Sun exposure should be minimized especially during midday when radiation is most intense. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Heads up! The UV radiation from the Sun can almost be doubled by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Afton, WY
- Average high temperature in December: 24.1°F
The warmest month (with the highest average high temperature) is July (75.9°F).
The month with the lowest average high temperature is December (24.1°F).
- Average low temperature in December: 6.6°F
The month with the highest average low temperature is July (45.7°F).
The coldest month (with the lowest average low temperature) is January (5.4°F).
Average pressure in December
Afton, WY
- Average pressure in December: 30.25"Hg
The month with the highest atmospheric pressure is January (30.29"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in December
Afton, WY
- Average wind speed in December: 4.2mph
The windiest month (with the highest average wind speed) is June (5.7mph).
The calmest months (with the lowest average wind speed) are January and December (4.2mph).
Average humidity in December
Afton, WY
- Average humidity in December: 90%
The month with the highest relative humidity is February (93%).
The month with the lowest relative humidity is August (45%).
Average rainfall in December
Afton, WY
- Average rainfall in December: 2.01"
The wettest month (with the highest rainfall) is February (2.72").
The driest months (with the least rainfall) are July and August (0.63").
Average rainfall days in December
Afton, WY
- Average rainfall days in December: 6.2 days
The month with the highest number of rainy days is May (16.8 days).
The month with the least rainy days is January (4.7 days).
Average snowfall in December
Afton, WY
- Average snowfall in December: 15.51"
The month with the highest snowfall is February (19.96").
The months with the least snowfall are July and August (0").
Average snowfall days in December
Afton, WY
- Average snowfall days in December: 21.7 days
The month with the highest number of snowfall days is December (21.7 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in December /
Average sunshine in December
Afton, 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: 4h and 48min
The month with the most sunshine is July (Average sunshine: 11h and 54min).
The month with the least sunshine is February (Average sunshine: 4h and 12min).
Average sunshine days in December
Afton, WY
- Average sunshine days in December: 9.5 days
The month with the most sunshine days is July (18.8 days).
The month with the least sunshine days is April (7 days).
Average UV index in December
Afton, WY
- Average UV index in December: 1
The month with the highest UV index is July (UV index 5).
The months with the lowest UV index are January, February, March, November and December (UV index 1).
Average cloud cover in December
Afton, WY
- Average cloud cover in December: 55
The month with the most cloud cover is February (Cloud cover 63).
The months with the least cloud cover are July and August (Cloud cover 12).
Average visibility in December
Afton, WY
- Average visibility in December: 4mi
The months with the highest visibility are May, June, July, August, September and October (6mi).
The months with the lowest visibility are January and February (3mi).
