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 December, the meteorological conditions alter, with the average high-temperature shifting from a chilly 43.3°F (6.3°C) in November to an icy 32.4°F (0.2°C). An average low-temperature of 21.7°F (-5.7°C) is common during the nights of December.Humidity
In Etna, the average relative humidity in December is 81%.Rainfall
In December, the rain falls for 9.5 days. Throughout December, 1.93" (49mm) of precipitation is accumulated. In Etna, during the entire year, the rain falls for 130.5 days and collects up to 18.7" (475mm) of precipitation.Snowfall
Months with snowfall are January through May, October through December. In December, it is snowing for 8.7 days. Throughout December, 3.86" (98mm) of snow is accumulated. In Etna, during the entire year, snow falls for 50.1 days and aggregates up to 21.14" (537mm) 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 the month, sunrise is at 6:54 am and sunset at 3:56 pm. On the last day of December, sunrise is at 7:13 am and sunset at 4:05 pm EST.
Sunshine
In Etna, the average sunshine in December is 4.4h.UV index
January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index of 2, and less, symbolizes a low threat to health from unprotected exposure to Sun's UV rays for the ordinary person.Note: A typical high UV index of 2 in December suggests the following recommendations:
While sun exposure does not greatly affect most, individuals with fair skin, babies, and children always need vigilant safeguarding. Stay safe from the Sun's strongest UV rays by limiting exposure during midday. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim. Guard yourself! Snow reflection can almost double the UV radiation from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is December?
What is the average humidity in December?
How many days does it rain in December?
How much does it snow in December?
What is the month with the shortest days?
How many hours of daylight does Etna have in December?
When is the sunrise / sunset in December?
How long on average sun shines in December?
When is the lowest UV index?
What is the UV index intensity in December?
Average temperature in December
Etna, ME
- Average high temperature in December: 32.4°F
The warmest month (with the highest average high temperature) is July (77.2°F).
The month with the lowest average high temperature is January (26.4°F).
- Average low temperature in December: 21.7°F
The month with the highest average low temperature is July (57.4°F).
The coldest month (with the lowest average low temperature) is January (13.6°F).
Average pressure in December
Etna, ME
- Average pressure in December: 30"Hg
The month with the highest atmospheric pressure is September (30.04"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in December
Etna, ME
- Average wind speed in December: 7.5mph
The windiest month (with the highest average wind speed) is March (8.1mph).
The calmest month (with the lowest average wind speed) is August (5.3mph).
Average humidity in December
Etna, ME
- Average humidity in December: 81%
The month with the highest relative humidity is February (85%).
The months with the lowest relative humidity are April and May (77%).
Average rainfall in December
Etna, ME
- Average rainfall in December: 1.93"
The wettest month (with the highest rainfall) is April (2.05").
The driest month (with the least rainfall) is July (1.1").
Average rainfall days in December
Etna, ME
- Average rainfall days in December: 9.5 days
The month with the highest number of rainy days is June (14.6 days).
The month with the least rainy days is January (5.7 days).
Average snowfall in December
Etna, ME
- Average snowfall in December: 3.86"
The month with the highest snowfall is January (4.96").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Etna, ME
- Average snowfall days in December: 8.7 days
The month with the highest number of snowfall days is February (11.6 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Etna, ME
- Average daylight in December: 8h and 5min
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: 4h and 2min
The month with the most sunshine is August (Average sunshine: 9h and 54min).
The month with the least sunshine is February (Average sunshine: 4h and 0min).
Average sunshine days in December
Etna, ME
- Average sunshine days in December: 15.2 days
The month with the most sunshine days is September (18.6 days).
The month with the least sunshine days is April (12.1 days).
Average UV index in December
Etna, ME
- Average UV index in December: 2
The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover in December
Etna, ME
- Average cloud cover in December: 52
The month with the most cloud cover is February (Cloud cover 56).
The months with the least cloud cover are August and September (Cloud cover 39).
Average visibility in December
Etna, ME
- Average visibility in December: 6mi
The months with the highest visibility are October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August and September (5mi).
Etna, Maine, USA
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