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 implies a gentle temperature shift, with average high-temperatures reducing from November's chilly 43.9°F (6.6°C) to a wintry 32.9°F (0.5°C). In Coopers Mills, an average temperature of 23°F (-5°C) is noted during December nights.Humidity
In December, the average relative humidity is 79%.Rainfall
The month with the most rainfall is December, when the rain falls for 10.3 days and typically aggregates up to 3.35" (85mm) of precipitation.Snowfall
January through May, October through December are months with snowfall. In December, it is snowing for 8.1 days. Throughout December, 4.76" (121mm) of snow is accumulated. Throughout the year, there are 46 snowfall days, and 27.76" (705mm) of snow is accumulated.Daylight
With an average of 8h and 54min of daylight, December has the shortest days of the year.On the first day of December, sunrise is at 6:54 am and sunset at 4:00 pm. On the last day of the month, sunrise is at 7:13 am and sunset at 4:09 pm EST.
Sunshine
In December, the average sunshine is 4.7h.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 minimal health hazard from exposure to the Sun's UV radiation for the ordinary person.Note: In December, a daily UV index of 2 turns into the following recommendations:
Children, infants, and individuals with sensitive skin should be constantly protected from extended sun exposure. Considering the harmful UV rays from the Sun during midday, it's essential to reduce exposure. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes. Be informed! The Sun's UV radiation can be nearly doubled due to the reflection from snow.
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?
What is the rainiest month?
How much does it rain in December?
How many days does it snow in December?
What is the month with the shortest days?
How many hours of daylight does Coopers Mills have in December?
When is the sunrise / sunset in December?
How long on average sun shines in December?
When is the lowest UV index?
How high is the UV index in December?
Average temperature in December
Coopers Mills, ME
- Average high temperature in December: 32.9°F
The warmest month (with the highest average high temperature) is July (76.3°F).
The month with the lowest average high temperature is January (27.1°F).
- Average low temperature in December: 23°F
The month with the highest average low temperature is July (57.9°F).
The coldest month (with the lowest average low temperature) is January (14.9°F).
Average pressure in December
Coopers Mills, ME
- Average pressure in December: 30.01"Hg
The months with the highest atmospheric pressure are September and November (30.04"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in December
Coopers Mills, ME
- Average wind speed in December: 8.3mph
The windiest month (with the highest average wind speed) is March (8.9mph).
The calmest month (with the lowest average wind speed) is August (5.5mph).
Average humidity in December
Coopers Mills, ME
- Average humidity in December: 79%
The month with the highest relative humidity is February (83%).
The month with the lowest relative humidity is November (76%).
Average rainfall in December
Coopers Mills, ME
- Average rainfall in December: 3.35"
The wettest month (with the highest rainfall) is December (3.35").
The driest month (with the least rainfall) is September (1.57").
Average rainfall days in December
Coopers Mills, ME
- Average rainfall days in December: 10.3 days
The month with the highest number of rainy days is May (15.9 days).
The month with the least rainy days is February (6.7 days).
Average snowfall in December
Coopers Mills, ME
- Average snowfall in December: 4.76"
The month with the highest snowfall is January (6.57").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Coopers Mills, ME
- Average snowfall days in December: 8.1 days
The month with the highest number of snowfall days is February (10.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Coopers Mills, 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 4min
The month with the most sunshine is August (Average sunshine: 10h and 12min).
The month with the least sunshine is February (Average sunshine: 4h and 36min).
Average sunshine days in December
Coopers Mills, ME
- Average sunshine days in December: 14.5 days
The month with the most sunshine days is September (16.9 days).
The month with the least sunshine days is April (11.5 days).
Average UV index in December
Coopers Mills, ME
- 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, November and December (UV index 2).
Average cloud cover in December
Coopers Mills, ME
- Average cloud cover in December: 50
The months with the most cloud cover are February, March and April (Cloud cover 51).
The month with the least cloud cover is August (Cloud cover 35).
Average visibility in December
Coopers Mills, ME
- Average visibility in December: 6mi
The months with the highest visibility are January, February, March, April, October, November and December (6mi).
The months with the lowest visibility are May, June, July, August and September (5mi).
Coopers Mills, Maine, USA
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