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 shift from November to December involves a decrease in the average high-temperature, dropping from a frosty 43°F (6.1°C) to a freezing cold 31.5°F (-0.3°C). In December, Porterfield's temperature tends to fall to an average low of 20.3°F (-6.5°C) during the night.Humidity
In December, the average relative humidity 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 Porterfield, Maine, there are 131.2 rainfall days, and 25.59" (650mm) of precipitation is accumulated.Snowfall
Months with snowfall in Porterfield are January through May, October through December. In December, it is snowing for 8.9 days. Throughout December, 6.42" (163mm) of snow is accumulated. In Porterfield, during the entire year, snow falls for 49.8 days and aggregates up to 38.19" (970mm) of snow.Daylight
December has the shortest days of the year, 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, in Porterfield, sunrise is at 7:17 am and sunset at 4:16 pm EST.
Sunshine
In December, the average sunshine is 4.9h.UV index
In December, the average daily maximum UV index in Porterfield is 2. A UV Index reading of 2, and below, represents a minimal health hazard from unsafe exposure to UV radiation for average individuals.Note: The maximum UV index of 2 during December leads to these instructions:
While most people are not greatly affected by extended sun exposure, those with fair skin, babies, and children must always have protection. The solar radiation around mid-day is intense; avoid the Sun and stay safe. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Be aware! The reflective nature of snow can magnify the Sun's UV radiation almost twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is it in Porterfield in December?
What is the average humidity in December in Porterfield?
How many days does it rain in December in Porterfield?
How much does it snow in Porterfield in December?
What is the month with the shortest days in Porterfield?
How many hours of daylight does Porterfield have in December?
When is the sunrise / sunset in December in Porterfield?
How long on average sun shines in December in Porterfield?
What is the UV index intensity in December in Porterfield?
Average temperature in December
Porterfield, 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
Porterfield, 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
Porterfield, 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
Porterfield, 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
Porterfield, 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
Porterfield, 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
Porterfield, 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
Porterfield, 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
Porterfield, 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 5min
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
Porterfield, 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
Porterfield, 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
Porterfield, 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
Porterfield, 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).
Porterfield, Maine, USA
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