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 shows a mild decline in the average high-temperature, falling from November's icy 40.1°F (4.5°C) to a freezing cold 28.2°F (-2.1°C). December nights observe an average temperature dip to 18.1°F (-7.7°C).Humidity
The average relative humidity in December in Crystal is 84%.Rainfall
In Crystal, in December, during 10.5 rainfall days, 2.6" (66mm) of precipitation is typically accumulated. Throughout the year, in Crystal, there are 156.1 rainfall days, and 26.89" (683mm) of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall in Crystal, Maine. In Crystal, during December, snow falls for 14.5 days and regularly aggregates up to 8.78" (223mm) of snow. Throughout the year, there are 78.3 snowfall days, and 45.63" (1159mm) of snow is accumulated.Daylight
With an average of 8h and 42min of daylight, December has the shortest days of the year in Crystal.On the first day of December, sunrise is at 6:55 am and sunset at 3:50 pm. On the last day of the month, sunrise is at 7:15 am and sunset at 3:58 pm EST.
Sunshine
The average sunshine in December is 4.1h.UV index
February and December, with an average maximum UV index of 1, 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 rays for average individuals.Note: The maximum daily UV index of 1 in December converts into the following recommendations:
Extended time in the sun generally does not harm most, but those with sensitive skin, infants, and children should always be protected. To protect against the Sun's most potent rays, avoid direct exposure around midday. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection. Take into account! The reflection from snow can nearly double the Sun's UV radiation intensity.
Frequently asked questions
How cold is December in Crystal?
What is the average humidity in December in Crystal?
How many days does it rain in December in Crystal?
How many days does it snow in December in Crystal?
What is the month with the shortest days in Crystal?
How many hours of daylight does Crystal have in December?
What time are sunrise and sunset in December in Crystal?
How long on average sun shines in December in Crystal?
What is the month with the lowest UV index in Crystal?
What is the UV index intensity in December in Crystal?
Average temperature in December
Crystal, ME
- Average high temperature in December: 28.2°F
The warmest month (with the highest average high temperature) is July (76.6°F).
The month with the lowest average high temperature is January (22.6°F).
- Average low temperature in December: 18.1°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 (9.7°F).
Average pressure in December
Crystal, ME
- Average pressure in December: 30"Hg
The months with the highest atmospheric pressure are September and November (30.03"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).
Average wind speed in December
Crystal, ME
- Average wind speed in December: 6.8mph
The windiest month (with the highest average wind speed) is March (7.4mph).
The calmest month (with the lowest average wind speed) is August (5.5mph).
Average humidity in December
Crystal, ME
- Average humidity in December: 84%
The months with the highest relative humidity are February and March (89%).
The month with the lowest relative humidity is May (75%).
Average rainfall in December
Crystal, ME
- Average rainfall in December: 2.6"
The wettest month (with the highest rainfall) is April (2.83").
The driest months (with the least rainfall) are March and July (1.73").
Average rainfall days in December
Crystal, ME
- Average rainfall days in December: 10.5 days
The month with the highest number of rainy days is June (17.1 days).
The month with the least rainy days is February (7.3 days).
Average snowfall in December
Crystal, ME
- Average snowfall in December: 8.78"
The month with the highest snowfall is February (10.24").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Crystal, ME
- Average snowfall days in December: 14.5 days
The month with the highest number of snowfall days is February (16.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Crystal, ME
- Average daylight in December: 8h and 4min
The month with the longest days is June (Average daylight: 15h and 42min).
The month with the shortest days is December (Average daylight: 8h and 42min).
- Average sunshine in December: 4h and 1min
The month with the most sunshine is August (Average sunshine: 9h and 48min).
The month with the least sunshine is February (Average sunshine: 3h and 18min).
Average sunshine days in December
Crystal, ME
- Average sunshine days in December: 12.8 days
The month with the most sunshine days is September (16.3 days).
The month with the least sunshine days is April (9.3 days).
Average UV index in December
Crystal, ME
- Average UV index in December: 1
The months with the highest UV index are June and July (UV index 5).
The months with the lowest UV index are February and December (UV index 1).
Average cloud cover in December
Crystal, ME
- Average cloud cover in December: 58
The month with the most cloud cover is February (Cloud cover 63).
The month with the least cloud cover is August (Cloud cover 40).
Average visibility in December
Crystal, 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).
Crystal, Maine, USA
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