December weather forecastPorter, ME
December
Weather in December
The first month of the winter, December, is still a freezing cold month in Porter, Maine, with an average temperature fluctuating between 31.5°F (-0.3°C) and 20.3°F (-6.5°C).Temperature
The arrival of December indicates a decrease in the average high-temperature, moving from a chilly 43°F (6.1°C) in November to a subzero cold 31.5°F (-0.3°C). Porter experiences an average nighttime temperature of 20.3°F (-6.5°C) in the month of December.Humidity
The average relative humidity in December is 80%.Rainfall
In December, the rain falls for 9.4 days. Throughout December, 2.6" (66mm) of precipitation is accumulated. Throughout the year, in Porter, Maine, there are 131.2 rainfall days, and 25.59" (650mm) of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall. In Porter, in December, during 8.9 snowfall days, 6.42" (163mm) of snow is typically accumulated. Throughout the year, in Porter, there are 49.8 snowfall days, and 38.19" (970mm) of snow is accumulated.Daylight
The month with the shortest days in Porter is December, with an average of 9h and 0min of daylight.On the first day of the month, sunrise is at 6:58 am and sunset at 4:07 pm. On the last day of December, sunrise is at 7:17 am and sunset at 4:16 pm EST.
Sunshine
The average sunshine in December in Porter is 4.9h.UV index
In Porter, the average daily maximum UV index in December is 2. A UV Index reading of 2, and below, represents a minimal health hazard from exposure to the Sun's UV rays for the average person.Note: In December, an average UV index of 2 transforms into the following instructions:
The majority are not significantly affected by prolonged sun exposure. Infants, children, and those with fair skin must always have protection. The Sun's UV radiation is especially harmful around midday, so reduce exposure and stay safe. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses. Observe! Snow reflection can nearly intensify the Sun's UV radiation twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Porter, ME
- Average high temperature in December: 31.5°F
The warmest month (with the highest average high temperature) is July (78.4°F).
The month with the lowest average high temperature is January (26.1°F).
- Average low temperature in December: 20.3°F
The month with the highest average low temperature is July (56.5°F).
The coldest month (with the lowest average low temperature) is January (11.7°F).
Average pressure in December
Porter, ME
- Average pressure in December: 30.03"Hg
The month with the highest atmospheric pressure is November (30.06"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in December
Porter, ME
- Average wind speed in December: 5.2mph
The windiest month (with the highest average wind speed) is April (5.8mph).
The calmest month (with the lowest average wind speed) is August (4.2mph).
Average humidity in December
Porter, ME
- Average humidity in December: 80%
The months with the highest relative humidity are January and February (85%).
The month with the lowest relative humidity is November (76%).
Average rainfall in December
Porter, ME
- Average rainfall in December: 2.6"
The wettest months (with the highest rainfall) are April and October (2.64").
The driest month (with the least rainfall) is September (1.22").
Average rainfall days in December
Porter, ME
- Average rainfall days in December: 9.4 days
The months with the highest number of rainy days are April and July (14.3 days).
The month with the least rainy days is February (6.3 days).
Average snowfall in December
Porter, ME
- Average snowfall in December: 6.42"
The month with the highest snowfall is February (9.88").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Porter, ME
- Average snowfall days in December: 8.9 days
The month with the highest number of snowfall days is February (11.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Porter, ME
- Average daylight in December: 9h and 0min
The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).
- Average sunshine in December: 4h and 54min
The month with the most sunshine is August (Average sunshine: 10h and 6min).
The month with the least sunshine is February (Average sunshine: 4h and 36min).
Average sunshine days in December
Porter, ME
- Average sunshine days in December: 15.5 days
The month with the most sunshine days is September (18.4 days).
The month with the least sunshine days is April (12.4 days).
Average UV index in December
Porter, ME
- Average UV index in December: 2
The months with the highest UV index are May, June, July and August (UV index 5).
The month with the lowest UV index is February (UV index 1).
Average cloud cover in December
Porter, ME
- Average cloud cover in December: 48
The month with the most cloud cover is March (Cloud cover 51).
The months with the least cloud cover are August and September (Cloud cover 36).
Average visibility in December
Porter, ME
- Average visibility in December: 5mi
The months with the highest visibility are March, April, May, June, July, August, September, October, November and December (5mi).
The months with the lowest visibility are January and February (4mi).
