December weather forecastWyarno, WY
December
Weather in December
The first month of the winter, December, is still a freezing cold month in Wyarno, Wyoming, with an average temperature ranging between min 15.3°F (-9.3°C) and max 29.3°F (-1.5°C).Temperature
As November transitions to December, the average high-temperature falls from a cold 39.7°F (4.3°C) to a freezing cold 29.3°F (-1.5°C). Wyarno, during the nights of December, experiences an average temperature drop to a still subzero cold 15.3°F (-9.3°C).Humidity
In Wyarno, the average relative humidity in December is 73%.Rainfall
The month with the least rainfall in Wyarno is December, when the rain falls for 7.8 days and typically collects 0.75" (19mm) of precipitation.Snowfall
January through May, September through December are months with snowfall in Wyarno. In Wyarno, in December, snow falls for 13.6 days, with typically accumulated 4.41" (112mm) of snow. In Wyarno, during the entire year, snow falls for 78.9 days and aggregates up to 46.3" (1176mm) of snow.Daylight
The month with the shortest days is December, with an average of 8h and 54min of daylight.On the first day of December, sunrise is at 7:25 am and sunset at 4:27 pm. On the last day of the month, sunrise is at 7:44 am and sunset at 4:36 pm MST.
Sunshine
In Wyarno, the average sunshine in December is 6.5h.UV index
January through April, October through December, with an average maximum UV index of 2, are months with the lowest UV index in Wyarno. A UV Index estimate of 2, and below, represents a minimal health hazard from exposure to the Sun's UV rays for the average person.Note: A maximum high daily UV index of 2 during December translates into the following directions:
Extended sunlight exposure does not pose significant problems for most people, except for children, infants, and people with fair skin who always need shielding. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat. Stay alert! Snow's reflective properties can almost double the UV radiation from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Wyarno, WY
- Average high temperature in December: 29.3°F
The warmest month (with the highest average high temperature) is July (78.8°F).
The month with the lowest average high temperature is February (29.1°F).
- Average low temperature in December: 15.3°F
The month with the highest average low temperature is July (57°F).
The coldest month (with the lowest average low temperature) is February (14.4°F).
Average pressure in December
Wyarno, WY
- Average pressure in December: 30.12"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.85"Hg).
Average wind speed in December
Wyarno, WY
- Average wind speed in December: 6.6mph
The windiest month (with the highest average wind speed) is April (7.6mph).
The calmest months (with the lowest average wind speed) are July and August (5.8mph).
Average humidity in December
Wyarno, WY
- Average humidity in December: 73%
The month with the highest relative humidity is February (79%).
The month with the lowest relative humidity is August (46%).
Average rainfall in December
Wyarno, WY
- Average rainfall in December: 0.75"
The wettest month (with the highest rainfall) is May (3.43").
The driest month (with the least rainfall) is December (0.75").
Average rainfall days in December
Wyarno, WY
- Average rainfall days in December: 7.8 days
The month with the highest number of rainy days is May (22.3 days).
The month with the least rainy days is November (7.5 days).
Average snowfall in December
Wyarno, WY
- Average snowfall in December: 4.41"
The month with the highest snowfall is April (8.7").
The months with the least snowfall are June, July and August (0").
Average snowfall days in December
Wyarno, WY
- Average snowfall days in December: 13.6 days
The month with the highest number of snowfall days is February (15.8 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in December /
Average sunshine in December
Wyarno, 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: 6h and 30min
The month with the most sunshine is July (Average sunshine: 11h and 54min).
The month with the least sunshine is February (Average sunshine: 6h and 6min).
Average sunshine days in December
Wyarno, WY
- Average sunshine days in December: 14.2 days
The month with the most sunshine days is November (15.2 days).
The month with the least sunshine days is May (5.8 days).
Average UV index in December
Wyarno, WY
- Average UV index in December: 2
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, March, April, October, November and December (UV index 2).
Average cloud cover in December
Wyarno, WY
- Average cloud cover in December: 33
The months with the most cloud cover are February and April (Cloud cover 37).
The month with the least cloud cover is July (Cloud cover 15).
Average visibility in December
Wyarno, 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).
