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
Waterville observes a minor decrease in the average high-temperature with the arrival of December, falling from November's frosty 43.2°F (6.2°C) to a freezing cold 31.6°F (-0.2°C). Throughout December, Waterville registers a consistent average low-temperature of 20.1°F (-6.6°C).Humidity
The average relative humidity in December is 81%.Rainfall
In Waterville, during December, the rain falls for 10.5 days and regularly aggregates up to 2.91" (74mm) of precipitation. In Waterville, during the entire year, the rain falls for 140.4 days and collects up to 28.35" (720mm) of precipitation.Snowfall
January through May, October through December are months with snowfall. In Waterville, during December, snow falls for 10.1 days and regularly aggregates up to 6.77" (172mm) of snow. Throughout the year, there are 55.2 snowfall days, and 37.83" (961mm) of snow is accumulated.Daylight
The month with the shortest days in Waterville is December, with an average of 8h and 54min of daylight.On the first day of the month, sunrise is at 6:55 am and sunset at 3:59 pm. On the last day of December, sunrise is at 7:15 am and sunset at 4:08 pm EST.
Sunshine
In Waterville, the average sunshine in December is 4.4h.UV index
January through March, October through 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 low threat to health from exposure to the Sun's UV radiation for the average person.Note: The maximum daily UV index of 2 during December translates into the following directions:
While most individuals can withstand prolonged sun exposure, it is imperative that babies, children, and those with sensitive skin always be shielded. The Sun is at its harshest during midday; protect yourself by staying in shaded areas and minimizing exposure. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Note this! The Sun's UV radiation can nearly be doubled by the reflection off snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is it in December?
What is the average humidity in December?
How many days does it rain in December in Waterville?
How much does it snow in December?
What is the month with the shortest days?
What is the average length of the day in December?
When are sunrise and sunset in December?
How long on average sun shines in December?
What is the month with the lowest UV index?
What is the UV index reading in December in Waterville?
Average temperature in December
Waterville, ME
- Average high temperature in December: 31.6°F
The warmest month (with the highest average high temperature) is July (77°F).
The month with the lowest average high temperature is January (25.3°F).
- Average low temperature in December: 20.1°F
The month with the highest average low temperature is July (56.8°F).
The coldest month (with the lowest average low temperature) is January (11.7°F).
Average pressure in December
Waterville, 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
Waterville, ME
- Average wind speed in December: 7.3mph
The windiest month (with the highest average wind speed) is March (8mph).
The calmest month (with the lowest average wind speed) is August (5.2mph).
Average humidity in December
Waterville, ME
- Average humidity in December: 81%
The months with the highest relative humidity are February and March (85%).
The months with the lowest relative humidity are April and November (78%).
Average rainfall in December
Waterville, ME
- Average rainfall in December: 2.91"
The wettest month (with the highest rainfall) is April (3.03").
The driest month (with the least rainfall) is September (1.54").
Average rainfall days in December
Waterville, ME
- Average rainfall days in December: 10.5 days
The month with the highest number of rainy days is May (15.9 days).
The month with the least rainy days is January (5.6 days).
Average snowfall in December
Waterville, ME
- Average snowfall in December: 6.77"
The month with the highest snowfall is January (8.07").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Waterville, ME
- Average snowfall days in December: 10.1 days
The month with the highest number of snowfall days is January (12.1 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Waterville, 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 2min
The month with the most sunshine is August (Average sunshine: 9h and 48min).
The month with the least sunshine is February (Average sunshine: 4h and 18min).
Average sunshine days in December
Waterville, ME
- Average sunshine days in December: 14.4 days
The month with the most sunshine days is September (17.7 days).
The month with the least sunshine days is April (11.5 days).
Average UV index in December
Waterville, 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
Waterville, ME
- Average cloud cover in December: 52
The months with the most cloud cover are February, March and April (Cloud cover 54).
The months with the least cloud cover are August and September (Cloud cover 40).
Average visibility in December
Waterville, ME
- Average visibility in December: 6mi
The months with the highest visibility are November and December (6mi).
The month with the lowest visibility is August (4mi).
Waterville, Maine, USA
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