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
Marblemount's December weather, marked by an average high temperature of 30.7°F (-0.7°C) and an average low temperature of 19.6°F (-6.9°C), is the coldest in the year.Humidity
In Marblemount, the average relative humidity in December is 90%.Rainfall
In Marblemount, in December, during 4.2 rainfall days, 7.95" (202mm) of precipitation is typically accumulated. In Marblemount, Washington, during the entire year, the rain falls for 124 days and collects up to 55.28" (1404mm) of precipitation.Snowfall
Months with snowfall are January through June, September through December. In Marblemount, in December, snow falls for 19.5 days, with typically accumulated 63.27" (1607mm) of snow. Throughout the year, there are 142 snowfall days, and 321.93" (8177mm) of snow is accumulated.Daylight
December has the shortest days of the year in Marblemount, with an average of 8h and 24min of daylight.On the first day of the month, sunrise is at 7:37 am and sunset at 4:12 pm. On the last day of December, sunrise is at 7:57 am and sunset at 4:20 pm PST.
Sunshine
In December, the average sunshine is 3.9h.UV index
The average daily maximum UV index in December is 2. A UV Index reading of 2, and below, represents 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:
Prolonged sun exposure generally does not trouble most people. However, it is vital to ensure protection for babies, children, and individuals with sensitive skin. Given the potency of the midday Sun's UV radiation, one should avoid prolonged exposure. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat. Take careful note! The UV radiation of the Sun can be nearly doubled by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the coldest months in Marblemount?
How cold is it in Marblemount in December?
What is the average humidity in December in Marblemount?
How much does it rain in Marblemount in December?
How many days does it snow in December in Marblemount?
What is the month with the shortest days in Marblemount?
How many hours of daylight does Marblemount have in December?
What time are sunrise and sunset in December in Marblemount?
How long on average sun shines in December in Marblemount?
How high is the UV index in December in Marblemount?
Average temperature in December
Marblemount, WA
- Average high temperature in December: 30.7°F
The warmest month (with the highest average high temperature) is August (71.2°F).
The month with the lowest average high temperature is December (30.7°F).
- Average low temperature in December: 19.6°F
The month with the highest average low temperature is August (43.7°F).
The coldest month (with the lowest average low temperature) is December (19.6°F).
Average pressure in December
Marblemount, WA
- Average pressure in December: 30.11"Hg
The month with the highest atmospheric pressure is January (30.12"Hg).
The months with the lowest atmospheric pressure are June and August (29.98"Hg).
Average wind speed in December
Marblemount, WA
- Average wind speed in December: 4.3mph
The windiest month (with the highest average wind speed) is January (4.7mph).
The calmest month (with the lowest average wind speed) is August (3.3mph).
Average humidity in December
Marblemount, WA
- Average humidity in December: 90%
The months with the highest relative humidity are January, February and March (91%).
The months with the lowest relative humidity are July and August (71%).
Average rainfall in December
Marblemount, WA
- Average rainfall in December: 7.95"
The wettest month (with the highest rainfall) is January (9.25").
The driest month (with the least rainfall) is August (0.87").
Average rainfall days in December
Marblemount, WA
- Average rainfall days in December: 4.2 days
The month with the highest number of rainy days is June (17.5 days).
The month with the least rainy days is February (3.8 days).
Average snowfall in December
Marblemount, WA
- Average snowfall in December: 63.27"
The month with the highest snowfall is January (71.57").
The months with the least snowfall are July and August (0").
Average snowfall days in December
Marblemount, WA
- Average snowfall days in December: 19.5 days
The month with the highest number of snowfall days is March (22.8 days).
The month with the least snowfall days is August (0 days).
Average daylight in December /
Average sunshine in December
Marblemount, WA
- Average daylight in December: 8h and 2min
The month with the longest days is June (Average daylight: 16h and 6min).
The month with the shortest days is December (Average daylight: 8h and 24min).
- Average sunshine in December: 3h and 5min
The month with the most sunshine is August (Average sunshine: 10h and 54min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).
Average sunshine days in December
Marblemount, WA
- Average sunshine days in December: 11.5 days
The month with the most sunshine days is August (18.1 days).
The month with the least sunshine days is April (6.5 days).
Average UV index in December
Marblemount, WA
- 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, October and November (UV index 1).
Average cloud cover in December
Marblemount, WA
- Average cloud cover in December: 59
The month with the most cloud cover is March (Cloud cover 63).
The month with the least cloud cover is August (Cloud cover 30).
Average visibility in December
Marblemount, WA
- Average visibility in December: 4mi
The months with the highest visibility are June, July, August and September (5mi).
The months with the lowest visibility are January and March (3mi).
Marblemount, Washington, USA
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