Contents
- Weather in December
- Frequently asked questions
- Average temperature in December
- Average pressure in December
- Average wind speed in December
- Average humidity in December
- Average rainfall in December
- Average rainfall days in December
- Average snowfall in December
- Average snowfall days in December
- Average daylight in December
- Average sunshine in December
- Average sunshine days in December
- Average UV index in December
- Average cloud cover in December
- Average visibility in December
Weather in December
Temperature
December brings the lowest temperatures in Green River, Wyoming, with an average high of 25.7°F (-3.5°C) and an average low of 11.5°F (-11.4°C).Humidity
In Green River, Wyoming, the average relative humidity in December is 82%.Rainfall
In Green River, Wyoming, during December, the rain falls for 4.7 days and regularly aggregates up to 0.71" (18mm) of precipitation. In Green River, during the entire year, the rain falls for 93.5 days and collects up to 10.31" (262mm) of precipitation.Snowfall
Months with snowfall are January through June, September through December. In Green River, in December, snow falls for 13.5 days, with typically accumulated 4.37" (111mm) of snow. In Green River, during the entire year, snow falls for 75.5 days and aggregates up to 30.16" (766mm) of snow.Daylight
December has the shortest days of the year, with an average of 9h and 12min of daylight.On the first day of December in Green River, sunrise is at 7:25 am and sunset at 4:48 pm. On the last day of the month, sunrise is at 7:44 am and sunset at 4:58 pm MST.
Sunshine
The months with the least sunshine are January and December, with an average of 5.9h of sunshine.UV index
The months with the lowest UV index are January through April, October through December, with an average maximum UV index of 2. A UV Index estimate of 2, and below, represents a low health risk from exposure to the Sun's UV rays for the average person.Note: The daily maximum UV index of 2 in December interprets into the following advice:
While most individuals can withstand prolonged sun exposure, it is imperative that babies, children, and those with sensitive skin always be shielded. Minimize direct exposure to the Sun during midday when its radiation is at its peak. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays. Take heed! Reflection from the snow can almost amplify the Sun's UV radiation by double.
Frequently asked questions
What is the coldest month in Green River?
How cold is it in Green River in December?
What is the average humidity in December in Green River?
How much does it rain in Green River in December?
How much does it snow in Green River in December?
What is the month with the shortest days in Green River?
How many hours of daylight does Green River have in December?
What time are sunrise and sunset in December in Green River?
What is the month with the least sunshine in Green River?
How many hours of sunshine does Green River have in December?
What are the months with the lowest UV index in Green River?
What is the UV index intensity in December in Green River?
Average temperature in December
Green River, WY
- Average high temperature in December: 25.7°F
The warmest month (with the highest average high temperature) is July (81.5°F).
The month with the lowest average high temperature is December (25.7°F).
- Average low temperature in December: 11.5°F
The month with the highest average low temperature is July (60.4°F).
The coldest month (with the lowest average low temperature) is January (10.8°F).
Average pressure in December
Green River, WY
- Average pressure in December: 30.24"Hg
The month with the highest atmospheric pressure is January (30.28"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).
Average wind speed in December
Green River, WY
- Average wind speed in December: 9.3mph
The windiest month (with the highest average wind speed) is April (12.2mph).
The calmest month (with the lowest average wind speed) is August (8.7mph).
Average humidity in December
Green River, WY
- Average humidity in December: 82%
The month with the highest relative humidity is January (84%).
The months with the lowest relative humidity are July and August (31%).
Average rainfall in December
Green River, WY
- Average rainfall in December: 0.71"
The wettest month (with the highest rainfall) is May (1.5").
The driest month (with the least rainfall) is July (0.47").
Average rainfall days in December
Green River, WY
- Average rainfall days in December: 4.7 days
The month with the highest number of rainy days is May (13.8 days).
The month with the least rainy days is December (4.7 days).
Average snowfall in December
Green River, WY
- Average snowfall in December: 4.37"
The month with the highest snowfall is March (6.14").
The months with the least snowfall are July and August (0").
Average snowfall days in December
Green River, WY
- Average snowfall days in December: 13.5 days
The month with the highest number of snowfall days is December (13.5 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in December /
Average sunshine in December
Green River, WY
- Average daylight in December: 9h and 1min
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 12min).
- Average sunshine in December: 5h and 5min
The months with the most sunshine are July and August (Average sunshine: 11h and 48min).
The months with the least sunshine are January and December (Average sunshine: 5h and 54min).
Average sunshine days in December
Green River, WY
- Average sunshine days in December: 16.4 days
The month with the most sunshine days is September (19.8 days).
The month with the least sunshine days is April (11.5 days).
Average UV index in December
Green River, 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
Green River, WY
- Average cloud cover in December: 41
The month with the most cloud cover is February (Cloud cover 43).
The month with the least cloud cover is August (Cloud cover 13).
Average visibility in December
Green River, WY
- Average visibility in December: 5mi
The months with the highest visibility are March, April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, February and December (5mi).
Green River, Wyoming, USA
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