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
With December's onset, the average high-temperature recedes from November's icy 38.1°F (3.4°C) to a subzero cold 26.1°F (-3.3°C). Throughout the month of December, Greenville witnesses an average temperature of 16.3°F (-8.7°C).Humidity
In December, the average relative humidity in Greenville is 86%.Rainfall
In Greenville, during December, the rain falls for 8.3 days and regularly aggregates up to 3.23" (82mm) of precipitation. Throughout the year, in Greenville, there are 147.1 rainfall days, and 34.65" (880mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, October through December. In Greenville, in December, during 18.1 snowfall days, 13.66" (347mm) of snow is typically accumulated. Throughout the year, there are 104.3 snowfall days, and 76.26" (1937mm) of snow is accumulated.Daylight
With an average of 8h and 48min of daylight, December has the shortest days of the year.On the first day of December in Greenville, sunrise is at 6:58 am and sunset at 3:56 pm. On the last day of the month, sunrise is at 7:18 am and sunset at 4:05 pm EST.
Sunshine
In Greenville, the average sunshine in December is 3.3h.UV index
The months with the lowest UV index are January through March, November and December, with an average maximum UV index of 1. A UV Index estimate of 2, and below, represents a low threat to health from unsafe exposure to UV radiation for the average person.Note: In December, the average maximum UV index of 1 translates into the following recommendations:
Babies, children, and individuals with sensitive skin should always have protection against extended sun exposure. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly. Take note! UV radiation from the Sun can double in intensity due to snow reflection.
Frequently asked questions
How cold is December in Greenville?
What is the average humidity in December in Greenville?
How much does it rain in Greenville in December?
How many days does it snow in December in Greenville?
What is the month with the shortest days in Greenville?
What is the average length of the day in December in Greenville?
When is the sunrise / sunset in December in Greenville?
How long on average sun shines in December in Greenville?
When is the lowest UV index in Greenville?
How high is the UV index in December in Greenville?
Average temperature in December
Greenville, 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
Greenville, 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
Greenville, 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
Greenville, 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
Greenville, 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
Greenville, 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
Greenville, 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
Greenville, 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
Greenville, 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
Greenville, 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
Greenville, 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
Greenville, 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
Greenville, 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).
Greenville, Maine, USA
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