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
Portage's weather changes with the onset of December, slightly falling from a cold 37.6°F (3.1°C) in November to a freezing cold 25.7°F (-3.5°C). In December, Portage's temperature tends to fall to an average low of 13.6°F (-10.2°C) during the night.Humidity
The average relative humidity in December in Portage is 89%.Rainfall
The month with the most rainfall is December, when the rain falls for 8 days and typically aggregates up to 3.19" (81mm) of precipitation.Snowfall
Months with snowfall are January through May, October through December. In Portage, in December, snow falls for 16.9 days, with typically accumulated 13.35" (339mm) of snow. Throughout the year, there are 98.7 snowfall days, and 69.17" (1757mm) of snow is accumulated.Daylight
December has the shortest days of the year, with an average of 8h and 36min of daylight.On the first day of the month, sunrise is at 6:58 am and sunset at 3:47 pm. On the last day of December, sunrise is at 7:18 am and sunset at 3:55 pm EST.
Sunshine
The average sunshine in December is 3.1h.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 value of 2, and less, symbolizes a low threat to health from exposure to the Sun's UV rays for average individuals.Note: During December, 1 as the daily maximum UV index converts into the following advice:
People with sensitive skin, children, and babies should always be protected from prolonged sun exposure. Stay safe from the Sun's strongest UV rays by limiting exposure during midday. 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. Be aware! The intensity of the Sun's UV radiation can be amplified nearly twice due to snow reflection.
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 in Portage?
How much does it rain in December?
How many days does it snow in December?
What is the month with the shortest days?
How many hours of daylight does Portage have in December?
What time are sunrise and sunset in December?
How long on average sun shines in December?
What are the months with the lowest UV index in Portage?
What is the UV index intensity in December?
Average temperature in December
Portage, ME
- Average high temperature in December: 25.7°F
The warmest month (with the highest average high temperature) is July (75.2°F).
The month with the lowest average high temperature is January (19.8°F).
- Average low temperature in December: 13.6°F
The month with the highest average low temperature is July (54.9°F).
The coldest month (with the lowest average low temperature) is January (5.4°F).
Average pressure in December
Portage, ME
- Average pressure in December: 30"Hg
The month with the highest atmospheric pressure is September (30.02"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).
Average wind speed in December
Portage, ME
- Average wind speed in December: 7.8mph
The windiest months (with the highest average wind speed) are January, February and March (8.2mph).
The calmest month (with the lowest average wind speed) is August (6.5mph).
Average humidity in December
Portage, ME
- Average humidity in December: 89%
The month with the highest relative humidity is March (93%).
The month with the lowest relative humidity is May (75%).
Average rainfall in December
Portage, ME
- Average rainfall in December: 3.19"
The wettest month (with the highest rainfall) is December (3.19").
The driest month (with the least rainfall) is February (2.2").
Average rainfall days in December
Portage, ME
- Average rainfall days in December: 8 days
The month with the highest number of rainy days is May (17.3 days).
The month with the least rainy days is February (4.8 days).
Average snowfall in December
Portage, ME
- Average snowfall in December: 13.35"
The month with the highest snowfall is January (15.2").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Portage, ME
- Average snowfall days in December: 16.9 days
The month with the highest number of snowfall days is February (20.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Portage, ME
- Average daylight in December: 8h and 4min
The month with the longest days is June (Average daylight: 15h and 48min).
The month with the shortest days is December (Average daylight: 8h and 36min).
- Average sunshine in December: 3h and 1min
The month with the most sunshine is August (Average sunshine: 9h and 30min).
The month with the least sunshine is February (Average sunshine: 2h and 6min).
Average sunshine days in December
Portage, ME
- Average sunshine days in December: 11.4 days
The month with the most sunshine days is September (14.5 days).
The month with the least sunshine days is February (7.9 days).
Average UV index in December
Portage, 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
Portage, ME
- Average cloud cover in December: 67
The month with the most cloud cover is February (Cloud cover 74).
The months with the least cloud cover are July and August (Cloud cover 43).
Average visibility in December
Portage, ME
- Average visibility in December: 4mi
The months with the highest visibility are May, June, July, August, September, October and November (5mi).
The months with the lowest visibility are January, February, March, April and December (4mi).
Portage, Maine, USA
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