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
Green River's December weather features a mild decline in high-temperatures, reducing from a cool 50.7°F (10.4°C) in November to a cold 37.9°F (3.3°C). In the month of December, Green River records a consistent average low-temperature of 23.4°F (-4.8°C).Humidity
In December, the average relative humidity in Green River is 65%.Rainfall
In Green River, during December, the rain falls for 4.7 days and regularly aggregates up to 0.47" (12mm) of precipitation. In Green River, Utah, during the entire year, the rain falls for 72.7 days and collects up to 5.28" (134mm) of precipitation.Snowfall
Months with snowfall in Green River are January through March, October through December. The month with the most snowfall is December, when snow falls for 4.5 days and typically aggregates up to 1.93" (49mm) of snow.Daylight
December has the shortest days of the year in Green River, Utah, with an average of 9h and 30min of daylight.On the first day of the month, sunrise is at 7:21 am and sunset at 4:58 pm. On the last day of December, sunrise is at 7:39 am and sunset at 5:08 pm MST.
Sunshine
In Green River, Utah, the average sunshine in December is 6.8h.UV index
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Green River. A UV Index of 2, and less, symbolizes a low health risk from unprotected exposure to Sun's UV rays for the average person.Note: The maximum daily UV index of 2 during December translates into the following directions:
Although prolonged sun exposure does not typically bother most people, children, babies, and those with sensitive skin should always have protection. Midday is the peak time for the Sun's radiation; stay in the shade and protect yourself. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades. Take warning! The intensity of the Sun's UV radiation can be nearly amplified twice due to snow reflection.
Frequently asked questions
Is December cold in Green River?
What is the average humidity in December in Green River?
How many days does it rain in December in Green River?
When does it snow the most in Green River?
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?
When are sunrise and sunset in December in Green River?
How long on average sun shines in December in Green River?
What are the months with the lowest UV index in Green River?
What is the UV index reading in December in Green River?
Average temperature in December
Green River, UT
- Average high temperature in December: 37.9°F
The warmest month (with the highest average high temperature) is July (91°F).
The month with the lowest average high temperature is January (36.1°F).
- Average low temperature in December: 23.4°F
The month with the highest average low temperature is July (71.4°F).
The coldest month (with the lowest average low temperature) is January (21.2°F).
Average pressure in December
Green River, UT
- Average pressure in December: 30.19"Hg
The month with the highest atmospheric pressure is January (30.25"Hg).
The month with the lowest atmospheric pressure is June (29.84"Hg).
Average wind speed in December
Green River, UT
- Average wind speed in December: 4mph
The windiest month (with the highest average wind speed) is April (7.8mph).
The calmest month (with the lowest average wind speed) is January (3.5mph).
Average humidity in December
Green River, UT
- Average humidity in December: 65%
The month with the highest relative humidity is January (74%).
The month with the lowest relative humidity is June (21%).
Average rainfall in December
Green River, UT
- Average rainfall in December: 0.47"
The wettest month (with the highest rainfall) is July (0.75").
The driest month (with the least rainfall) is April (0.24").
Average rainfall days in December
Green River, UT
- Average rainfall days in December: 4.7 days
The month with the highest number of rainy days is July (9.1 days).
The month with the least rainy days is November (3.8 days).
Average snowfall in December
Green River, UT
- Average snowfall in December: 1.93"
The month with the highest snowfall is December (1.93").
The months with the least snowfall are April, May, June, July, August and September (0").
Average snowfall days in December
Green River, UT
- Average snowfall days in December: 4.5 days
The month with the highest number of snowfall days is January (4.8 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Green River, UT
- Average daylight in December: 9h and 3min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in December: 6h and 5min
The month with the most sunshine is June (Average sunshine: 12h and 0min).
The month with the least sunshine is January (Average sunshine: 6h and 24min).
Average sunshine days in December
Green River, UT
- Average sunshine days in December: 23.3 days
The month with the most sunshine days is November (24.5 days).
The month with the least sunshine days is July (14.8 days).
Average UV index in December
Green River, UT
- Average UV index in December: 2
The months with the highest UV index are June, July and August (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in December
Green River, UT
- Average cloud cover in December: 25
The month with the most cloud cover is January (Cloud cover 27).
The months with the least cloud cover are June and September (Cloud cover 10).
Average visibility in December
Green River, UT
- Average visibility in December: 6mi
The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is January (5mi).
Green River, Utah, USA
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