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
The transition into December involves a decrease in the average high-temperature, falling from a wintry 41°F (5°C) in November to a subzero cold 29.1°F (-1.6°C). During the month of December, Dover South Mills experiences a steady low-temperature average of 18.7°F (-7.4°C).Humidity
In December, the average relative humidity is 83%.Rainfall
In Dover South Mills, in December, during 10.8 rainfall days, 3.23" (82mm) of precipitation is typically accumulated. In Dover South Mills, during the entire year, the rain falls for 154.3 days and collects up to 32.68" (830mm) of precipitation.Snowfall
January through May, October through December are months with snowfall. In December, it is snowing for 12.4 days. Throughout December, 9.06" (230mm) of snow is accumulated. Throughout the year, there are 69.5 snowfall days, and 49.96" (1269mm) of snow is accumulated.Daylight
The month with the shortest days is December, with an average of 8h and 48min of daylight.On the first day of the month, sunrise is at 6:55 am and sunset at 3:56 pm. On the last day of December, sunrise is at 7:15 am and sunset at 4:04 pm EST.
Sunshine
In Dover South Mills, the average sunshine in December is 4.2h.UV index
The months with the lowest UV index are January through March, October through December, with an average maximum UV index of 2. A UV Index estimate of 2, and below, represents a low threat to health from exposure to the Sun's UV rays for the ordinary person.Note: The average daily UV index of 2 in December transforms into the following instructions:
Though extended exposure to the sun typically does not concern most people, it is crucial to always shield children, infants, and those with sensitive skin. The intensity of the Sun's UV radiation during midday suggests reducing time spent outdoors. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration. Take note! UV radiation from the Sun can double in intensity due to snow reflection.
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 much does it rain in December?
How many days does it snow in December?
What is the month with the shortest days?
What is the average length of the day in December?
When is the sunrise / sunset in December?
How many hours of sunshine does Dover South Mills have in December?
What is the month with the lowest UV index?
How high is the UV index in December in Dover South Mills?
Average temperature in December
Dover South Mills, ME
- Average high temperature in December: 29.1°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 (23.9°F).
- Average low temperature in December: 18.7°F
The month with the highest average low temperature is July (55.9°F).
The coldest month (with the lowest average low temperature) is January (10.8°F).
Average pressure in December
Dover South Mills, ME
- Average pressure in December: 30.01"Hg
The month with the highest atmospheric pressure is September (30.04"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).
Average wind speed in December
Dover South Mills, ME
- Average wind speed in December: 6.8mph
The windiest month (with the highest average wind speed) is March (7.5mph).
The calmest month (with the lowest average wind speed) is August (5.2mph).
Average humidity in December
Dover South Mills, ME
- Average humidity in December: 83%
The month with the highest relative humidity is February (88%).
The month with the lowest relative humidity is May (76%).
Average rainfall in December
Dover South Mills, ME
- Average rainfall in December: 3.23"
The wettest month (with the highest rainfall) is April (3.54").
The driest month (with the least rainfall) is July (1.89").
Average rainfall days in December
Dover South Mills, ME
- Average rainfall days in December: 10.8 days
The months with the highest number of rainy days are May and July (16.7 days).
The month with the least rainy days is February (6.8 days).
Average snowfall in December
Dover South Mills, ME
- Average snowfall in December: 9.06"
The month with the highest snowfall is February (11.26").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Dover South Mills, ME
- Average snowfall days in December: 12.4 days
The month with the highest number of snowfall days is February (15.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Dover South Mills, ME
- Average daylight in December: 8h and 5min
The month with the longest days is June (Average daylight: 15h and 36min).
The month with the shortest days is December (Average daylight: 8h and 48min).
- Average sunshine in December: 4h and 1min
The month with the most sunshine is August (Average sunshine: 9h and 54min).
The month with the least sunshine is February (Average sunshine: 3h and 48min).
Average sunshine days in December
Dover South Mills, ME
- Average sunshine days in December: 13.9 days
The month with the most sunshine days is September (16.4 days).
The month with the least sunshine days is April (10.7 days).
Average UV index in December
Dover South Mills, 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, October, November and December (UV index 2).
Average cloud cover in December
Dover South Mills, ME
- Average cloud cover in December: 54
The month with the most cloud cover is February (Cloud cover 59).
The months with the least cloud cover are August and September (Cloud cover 40).
Average visibility in December
Dover South Mills, ME
- Average visibility in December: 5mi
The months with the highest visibility are April, May, June, July, August, September, October, November and December (5mi).
The months with the lowest visibility are January, February and March (4mi).
Dover South Mills, Maine, USA
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