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
The decrease of average high-temperatures is mild in December, with a decline from an icy 39.2°F (4°C) in November to a subzero cold 27.3°F (-2.6°C). Knowles Corner records an average low of 16.2°F (-8.8°C) throughout the nights in December.Humidity
In December, the average relative humidity is 88%.Rainfall
December is the month with the most rainfall. Rain falls for 9.3 days and accumulates 3.27" (83mm) of precipitation.Snowfall
January through May, October through December are months with snowfall. In Knowles Corner, in December, snow falls for 14.9 days, with typically accumulated 11.3" (287mm) of snow. In Knowles Corner, during the entire year, snow falls for 88.2 days and aggregates up to 62.83" (1596mm) of snow.Daylight
December has the shortest days of the year, with an average of 8h and 42min of daylight.On the first day of the month, sunrise is at 6:56 am and sunset at 3:49 pm. On the last day of December, sunrise is at 7:15 am and sunset at 3:57 pm EST.
Sunshine
The average sunshine in December is 3.5h.UV index
January through March, November and December, with an average maximum UV index of 1, are months with the lowest UV index. A UV Index estimate of 2, and below, represents a low health risk from exposure to the Sun's UV radiation for the average person.Note: The maximum daily UV index, 1 in December, converts into the following recommendations:
Most individuals can handle sun exposure for up to an hour without burning, but children must always be shielded from sun exposure. Avoid the Sun's strongest UV rays by seeking shade and limiting exposure during midday. Enhance your sun protection with tightly woven, yet airy clothing. Stay alert! Snow's reflective properties can almost double the UV radiation from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is December?
What is the average humidity in December?
What is the wettest month?
How many days does it rain in December?
How many days does it snow in December?
What is the month with the shortest days?
What is the average length of the day in December in Knowles Corner?
What time are sunrise and sunset in December?
How many hours of sunshine does Knowles Corner have in December?
When is the lowest UV index in Knowles Corner?
What is the UV index reading in December?
Average temperature in December
Knowles Corner, ME
- Average high temperature in December: 27.3°F
The warmest month (with the highest average high temperature) is July (75.9°F).
The month with the lowest average high temperature is January (21.9°F).
- Average low temperature in December: 16.2°F
The month with the highest average low temperature is July (55.2°F).
The coldest month (with the lowest average low temperature) is January (7.7°F).
Average pressure in December
Knowles Corner, ME
- Average pressure in December: 29.99"Hg
The month with the highest atmospheric pressure is September (30.03"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).
Average wind speed in December
Knowles Corner, ME
- Average wind speed in December: 7.8mph
The windiest month (with the highest average wind speed) is March (8.3mph).
The calmest month (with the lowest average wind speed) is August (6.2mph).
Average humidity in December
Knowles Corner, ME
- Average humidity in December: 88%
The months with the highest relative humidity are January, February and March (91%).
The month with the lowest relative humidity is May (76%).
Average rainfall in December
Knowles Corner, ME
- Average rainfall in December: 3.27"
The wettest month (with the highest rainfall) is December (3.27").
The driest month (with the least rainfall) is July (2.17").
Average rainfall days in December
Knowles Corner, ME
- Average rainfall days in December: 9.3 days
The month with the highest number of rainy days is July (17.2 days).
The month with the least rainy days is February (4.3 days).
Average snowfall in December
Knowles Corner, ME
- Average snowfall in December: 11.3"
The months with the highest snowfall are January and February (13.07").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Knowles Corner, ME
- Average snowfall days in December: 14.9 days
The month with the highest number of snowfall days is February (19.1 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Knowles Corner, 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: 3h and 3min
The month with the most sunshine is August (Average sunshine: 9h and 36min).
The month with the least sunshine is February (Average sunshine: 2h and 36min).
Average sunshine days in December
Knowles Corner, ME
- Average sunshine days in December: 12.6 days
The month with the most sunshine days is September (15.1 days).
The month with the least sunshine days is April (8.7 days).
Average UV index in December
Knowles Corner, 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 January, February, March, November and December (UV index 1).
Average cloud cover in December
Knowles Corner, ME
- Average cloud cover in December: 64
The month with the most cloud cover is February (Cloud cover 69).
The month with the least cloud cover is August (Cloud cover 42).
Average visibility in December
Knowles Corner, ME
- Average visibility in December: 4mi
The months with the highest visibility are April, May, June, July, August, September, October and November (5mi).
The months with the lowest visibility are January, February, March and December (4mi).
Knowles Corner, Maine, USA
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