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
Shirley Mills's progression into December includes a drop in the average high-temperature, from an icy 38.1°F (3.4°C) in November to a subzero cold 26.1°F (-3.3°C). During the month of December, Shirley Mills anticipates a mean low-temperature of 16.3°F (-8.7°C).Humidity
In Shirley Mills, Maine, the average relative humidity in December is 86%.Rainfall
In Shirley Mills, Maine, in December, it is raining for 8.3 days, with typically 3.23" (82mm) of accumulated precipitation. In Shirley Mills, Maine, during the entire year, the rain falls for 147.1 days and collects up to 34.65" (880mm) of precipitation.Snowfall
Months with snowfall are January through May, October through December. In Shirley Mills, during December, snow falls for 18.1 days and regularly aggregates up to 13.66" (347mm) of snow. In Shirley Mills, during the entire year, snow falls for 104.3 days and aggregates up to 76.26" (1937mm) of snow.Daylight
December has the shortest days of the year, with an average of 8h and 48min of daylight.On the first day of the month, sunrise is at 6:58 am and sunset at 3:57 pm. On the last day of December, sunrise is at 7:17 am and sunset at 4:05 pm EST.
Sunshine
In Shirley Mills, the average sunshine in December is 3.3h.UV index
January through March, November and December, with an average maximum UV index of 1, are months with the lowest UV index in Shirley Mills. A UV Index of 2, and less, symbolizes a minimal health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The daily high UV index of 1 during December translates into the following recommendations:
Extended sunlight exposure does not pose significant problems for most people, except for children, infants, and people with fair skin who always need shielding. The best time to avoid the Sun's harmful UV radiation is during midday when it's most potent. Experience reduced UV exposure by about half when donning a wide-brim hat. Watch out! The Sun's UV radiation can be nearly magnified twofold due to snow reflection.
Frequently asked questions
How cold is December in Shirley Mills?
What is the average humidity in December in Shirley Mills?
How many days does it rain in December in Shirley Mills?
How many days does it snow in December in Shirley Mills?
What is the month with the shortest days in Shirley Mills?
What is the average length of the day in December in Shirley Mills?
When is the sunrise / sunset in December in Shirley Mills?
How long on average sun shines in December in Shirley Mills?
When is the lowest UV index in Shirley Mills?
What is the UV index reading in December in Shirley Mills?
Average temperature in December
Shirley Mills, ME
- Average high temperature in December: 26.1°F
The warmest month (with the highest average high temperature) is July (74.8°F).
The month with the lowest average high temperature is January (20.8°F).
- Average low temperature in December: 16.3°F
The month with the highest average low temperature is July (54.5°F).
The coldest month (with the lowest average low temperature) is January (7.9°F).
Average pressure in December
Shirley 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 (29.9"Hg).
Average wind speed in December
Shirley Mills, ME
- Average wind speed in December: 7.3mph
The windiest month (with the highest average wind speed) is March (7.9mph).
The calmest month (with the lowest average wind speed) is August (5.5mph).
Average humidity in December
Shirley Mills, ME
- Average humidity in December: 86%
The month with the highest relative humidity is February (90%).
The month with the lowest relative humidity is May (77%).
Average rainfall in December
Shirley 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 February (2.24").
Average rainfall days in December
Shirley Mills, ME
- Average rainfall days in December: 8.3 days
The months with the highest number of rainy days are July and August (17.8 days).
The month with the least rainy days is February (4.4 days).
Average snowfall in December
Shirley Mills, ME
- Average snowfall in December: 13.66"
The month with the highest snowfall is January (14.33").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Shirley Mills, ME
- Average snowfall days in December: 18.1 days
The month with the highest number of snowfall days is February (20.6 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Shirley 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: 3h and 2min
The month with the most sunshine is August (Average sunshine: 9h and 12min).
The month with the least sunshine is February (Average sunshine: 2h and 36min).
Average sunshine days in December
Shirley Mills, ME
- Average sunshine days in December: 11 days
The month with the most sunshine days is September (15.1 days).
The month with the least sunshine days is February (8.1 days).
Average UV index in December
Shirley Mills, ME
- Average UV index in December: 1
The month with the highest UV index is July (UV index 5).
The months with the lowest UV index are January, February, March, November and December (UV index 1).
Average cloud cover in December
Shirley Mills, ME
- Average cloud cover in December: 67
The month with the most cloud cover is February (Cloud cover 73).
The months with the least cloud cover are July and August (Cloud cover 45).
Average visibility in December
Shirley Mills, ME
- Average visibility in December: 4mi
The months with the highest visibility are May, July, October and November (5mi).
The months with the lowest visibility are January, February, March, April, June, August, September and December (4mi).
Shirley Mills, Maine, USA
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