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
In December, the average high-temperature in Waterville decreases from a frosty 43.2°F (6.2°C) in November to a subzero cold 31.6°F (-0.2°C). The nighttime temperature dips to 20.1°F (-6.6°C) on average during December.Humidity
In December, the average relative humidity in Waterville is 81%.Rainfall
In Waterville, in December, during 10.5 rainfall days, 2.91" (74mm) of precipitation is typically accumulated. 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, in December, during 10.1 snowfall days, 6.77" (172mm) of snow is typically accumulated. In Waterville, Maine, during the entire year, snow falls for 55.2 days and aggregates up to 37.83" (961mm) of snow.Daylight
With an average of 8h and 54min of daylight, December has the shortest days of the year.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 December, the average sunshine 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 reading of 2, and below, represents a minimal health vulnerability from unsafe exposure to UV radiation for ordinary individuals.Note: The UV index of 2 during December translates into the following guidance:
For the majority, extended sun exposure is not of great concern. Infants and people with sensitive skin must always be protected. The intensity of the Sun's UV radiation during midday suggests reducing time spent outdoors. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage. Take heed! Reflection from the snow can almost amplify the Sun's UV radiation by double.
Frequently asked questions
How cold is it in Waterville in December?
What is the average humidity in December in Waterville?
How much does it rain in Waterville in December?
How many days does it snow in December in Waterville?
What is the month with the shortest days in Waterville?
How many hours of daylight does Waterville have in December?
What time are sunrise and sunset in December in Waterville?
How many hours of sunshine does Waterville have in December?
When is the lowest UV index in Waterville?
What is the UV index intensity 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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