December weather forecastThayne, WY
December
Weather in December
The first month of the winter, December, is still a freezing cold month in Thayne, Wyoming, with an average temperature fluctuating between 24.1°F (-4.4°C) and 6.6°F (-14.1°C).Temperature
December tends to be the coldest month, with temperatures averaging a daily high of 24.1°F (-4.4°C) and a low of 6.6°F (-14.1°C).Humidity
In December, the average relative humidity in Thayne is 90%.Rainfall
In Thayne, in December, during 6.2 rainfall days, 2.01" (51mm) of precipitation is typically accumulated. Throughout the year, there are 109.5 rainfall days, and 21.61" (549mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through June, September through December. In Thayne, in December, snow falls for 21.7 days, with typically accumulated 15.51" (394mm) of snow. In Thayne, during the entire year, snow falls for 126.9 days and aggregates up to 106.65" (2709mm) of snow.Daylight
The month with the shortest days in Thayne is December, with an average of 9h and 6min of daylight.On the first day of the month, sunrise is at 7:36 am and sunset at 4:50 pm. On the last day of December, in Thayne, sunrise is at 7:54 am and sunset at 4:59 pm MST.
Sunshine
In December, the average sunshine is 4.8h.UV index
The months with the lowest UV index in Thayne are January through March, November and December, with an average maximum UV index of 1. A UV Index of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV rays for the average person.Note: The maximum daily UV index, 1 in December, converts into the following recommendations:
Protection from prolonged sun exposure is necessary for babies, children, and individuals with sensitive skin. Avoiding direct sun during mid-day hours can prevent harmful UV radiation exposure. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Thayne, 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
Thayne, 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
Thayne, 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
Thayne, 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
Thayne, 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
Thayne, 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
Thayne, 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
Thayne, 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
Thayne, 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
Thayne, 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
Thayne, 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
Thayne, 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
Thayne, 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).
