December weather forecastHyattville, WY
December
Weather in December
The first month of the winter, December, is also a subzero cold month in Hyattville, Wyoming, with an average temperature varying between 2.3°F (-16.5°C) and 20.8°F (-6.2°C).Temperature
December, with its high-temperature average of 20.8°F (-6.2°C) and a low-temperature average of 2.3°F (-16.5°C), is the coldest month.Humidity
In Hyattville, the average relative humidity in December is 82%.Rainfall
December is the month with the least rainfall in Hyattville, Wyoming. Rain falls for 4 days and accumulates 0.75" (19mm) of precipitation.Snowfall
January through June, August through December are months with snowfall. In Hyattville, Wyoming, during December, snow falls for 14 days and regularly aggregates up to 5.91" (150mm) of snow. Throughout the year, in Hyattville, there are 113.3 snowfall days, and 89.49" (2273mm) of snow is accumulated.Daylight
December has the shortest days of the year, with an average of 8h and 54min of daylight.On the first day of December in Hyattville, Wyoming, sunrise is at 7:26 am and sunset at 4:32 pm. On the last day of the month, sunrise is at 7:45 am and sunset at 4:41 pm MST.
Sunshine
In December, the average sunshine in Hyattville is 5.2h.UV index
The months with the lowest UV index in Hyattville are January through April, October through December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a low threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The daily high UV index of 2 during December translates into the following recommendations:
Although the majority can endure up to an hour in the sun without burns, children always require sun protection. For health reasons, it's advisable to reduce direct sun exposure during peak hours around midday. A wide-brimmed hat is a staple for defending the face, eyes, ears, and neck from the Sun. Remember! The Sun's UV radiation can be magnified almost twofold by the reflection of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Hyattville, WY
- Average high temperature in December: 20.8°F
The warmest month (with the highest average high temperature) is July (69.4°F).
The month with the lowest average high temperature is December (20.8°F).
- Average low temperature in December: 2.3°F
The month with the highest average low temperature is July (48.7°F).
The coldest month (with the lowest average low temperature) is December (2.3°F).
Average pressure in December
Hyattville, WY
- Average pressure in December: 30.14"Hg
The months with the highest atmospheric pressure are January and December (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.86"Hg).
Average wind speed in December
Hyattville, WY
- Average wind speed in December: 5.7mph
The windiest month (with the highest average wind speed) is June (6.3mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).
Average humidity in December
Hyattville, WY
- Average humidity in December: 82%
The month with the highest relative humidity is February (85%).
The month with the lowest relative humidity is August (51%).
Average rainfall in December
Hyattville, WY
- Average rainfall in December: 0.75"
The wettest month (with the highest rainfall) is May (3.62").
The driest month (with the least rainfall) is December (0.75").
Average rainfall days in December
Hyattville, WY
- Average rainfall days in December: 4 days
The month with the highest number of rainy days is July (16.5 days).
The month with the least rainy days is November (2.3 days).
Average snowfall in December
Hyattville, WY
- Average snowfall in December: 5.91"
The month with the highest snowfall is May (19.33").
The month with the least snowfall is July (0").
Average snowfall days in December
Hyattville, WY
- Average snowfall days in December: 14 days
The month with the highest number of snowfall days is January (15.8 days).
The month with the least snowfall days is July (0 days).
Average daylight in December /
Average sunshine in December
Hyattville, WY
- Average daylight in December: 8h and 54min
The month with the longest days is June (Average daylight: 15h and 30min).
The month with the shortest days is December (Average daylight: 8h and 54min).
- Average sunshine in December: 5h and 12min
The month with the most sunshine is July (Average sunshine: 11h and 42min).
The month with the least sunshine is February (Average sunshine: 4h and 48min).
Average sunshine days in December
Hyattville, WY
- Average sunshine days in December: 16.9 days
The month with the most sunshine days is November (19.7 days).
The month with the least sunshine days is June (8.6 days).
Average UV index in December
Hyattville, WY
- Average UV index in December: 2
The month with the highest UV index is July (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
Hyattville, WY
- Average cloud cover in December: 44
The month with the most cloud cover is February (Cloud cover 52).
The month with the least cloud cover is July (Cloud cover 16).
Average visibility in December
Hyattville, WY
- Average visibility in December: 4mi
The months with the highest visibility are May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, February and December (4mi).
