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
In Green River, the average high-temperature in December drops from a fresh 50.7°F (10.4°C) in November to a wintry 37.9°F (3.3°C). In December, the average low-temperature is 23.4°F (-4.8°C).Humidity
The average relative humidity in December 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, during the entire year, the rain falls for 72.7 days and collects up to 5.28" (134mm) of precipitation.Snowfall
Months with snowfall are January through March, October through December. The month with the most snowfall in Green River is December, when snow falls for 4.5 days and typically aggregates up to 1.93" (49mm) of snow.Daylight
The month with the shortest days in Green River is December, with an average of 9h and 29min of daylight.On the first day of the month, sunrise is at 7:20 am and sunset at 4:58 pm. On the last day of December, in Green River, sunrise is at 7:39 am and sunset at 5:08 pm MST.
Sunshine
In Green River, the average sunshine in December is 6.8h.UV index
The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2. A UV Index estimate of 2, and below, represents a minimal health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.Note: In December, the average maximum UV index of 2 translate into the following recommendations:
For the majority, extended sun exposure is not of great concern. Infants and people with sensitive skin must always be protected. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
FAQ
What is the temperature in December in Green River?
What is the average humidity in December in Green River?
How much does it rain in Green River in December?
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?
What is the average length of the day in December in Green River?
When is the sunrise / sunset in December in Green River?
How many hours of sunshine does Green River have in December?
When is 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 29min
The month with the longest days is June (Average daylight: 14h and 52min).
The month with the shortest days is December (Average daylight: 9h and 29min).
- Average sunshine in December: 6h and 48min
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).
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