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
A change in temperatures is noted as November gives way to December, with average highs reducing from an icy 41.7°F (5.4°C) to a subzero cold 30°F (-1.1°C). In Mattawamkeag, the average temperature during the nights of December drops to 19.8°F (-6.8°C).Humidity
In Mattawamkeag, the average relative humidity in December is 83%.Rainfall
In Mattawamkeag, in December, it is raining for 6.9 days, with typically 1.06" (27mm) of accumulated precipitation. In Mattawamkeag, during the entire year, the rain falls for 105.2 days and collects up to 12.4" (315mm) of precipitation.Snowfall
January through May, October through December are months with snowfall. In December, it is snowing for 9.6 days. Throughout December, 2.6" (66mm) of snow is accumulated. In Mattawamkeag, during the entire year, snow falls for 50.6 days and aggregates up to 15.59" (396mm) of snow.Daylight
The month with the shortest days in Mattawamkeag is December, with an average of 8h and 48min of daylight.On the first day of December, sunrise is at 6:53 am and sunset at 3:51 pm. On the last day of the month, sunrise is at 7:13 am and sunset at 4:00 pm EST.
Sunshine
The average sunshine in December is 4.1h.UV index
January through March, October through December, with an average maximum UV index of 2, are months with the lowest UV index in Mattawamkeag, Maine. A UV Index value of 2, and less, symbolizes a low health risk from exposure to the Sun's UV rays for the average person.Note: In December, the maximum UV index of 2 transforms into these recommendations:
Long-term sun exposure is typically not a concern for most. However, those with sensitive skin, infants, and children must always have protection. Protect yourself from the midday Sun's peak UV radiation by minimizing exposure. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly. Warning! The reflection from snow can nearly magnify the Sun's UV radiation twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is it in December?
What is the average humidity in December?
How many days does it rain in December?
How much does it snow in December?
What is the month with the shortest days?
What is the average length of the day in December?
When are sunrise and sunset in December?
How many hours of sunshine does Mattawamkeag have in December?
When is the lowest UV index?
What is the UV index intensity in December?
Average temperature in December
Mattawamkeag, ME
- Average high temperature in December: 30°F
The warmest month (with the highest average high temperature) is July (78.3°F).
The month with the lowest average high temperature is January (24.4°F).
- Average low temperature in December: 19.8°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 (11.3°F).
Average pressure in December
Mattawamkeag, ME
- Average pressure in December: 30"Hg
The months with the highest atmospheric pressure are September and November (30.03"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).
Average wind speed in December
Mattawamkeag, ME
- Average wind speed in December: 6.8mph
The windiest month (with the highest average wind speed) is March (7.5mph).
The calmest month (with the lowest average wind speed) is August (5.4mph).
Average humidity in December
Mattawamkeag, ME
- Average humidity in December: 83%
The month with the highest relative humidity is February (88%).
The month with the lowest relative humidity is May (75%).
Average rainfall in December
Mattawamkeag, ME
- Average rainfall in December: 1.06"
The wettest month (with the highest rainfall) is April (1.38").
The driest months (with the least rainfall) are March, July and September (0.75").
Average rainfall days in December
Mattawamkeag, ME
- Average rainfall days in December: 6.9 days
The month with the highest number of rainy days is June (12.1 days).
The month with the least rainy days is February (3.9 days).
Average snowfall in December
Mattawamkeag, ME
- Average snowfall in December: 2.6"
The month with the highest snowfall is January (3.43").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Mattawamkeag, ME
- Average snowfall days in December: 9.6 days
The month with the highest number of snowfall days is February (11 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Mattawamkeag, ME
- Average daylight in December: 8h and 5min
The month with the longest days is June (Average daylight: 15h and 36min).
The month with the shortest days is December (Average daylight: 8h and 48min).
- Average sunshine in December: 4h and 1min
The month with the most sunshine is August (Average sunshine: 9h and 54min).
The month with the least sunshine is February (Average sunshine: 3h and 30min).
Average sunshine days in December
Mattawamkeag, ME
- Average sunshine days in December: 18 days
The month with the most sunshine days is September (19.8 days).
The month with the least sunshine days is April (14.8 days).
Average UV index in December
Mattawamkeag, 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
Mattawamkeag, ME
- Average cloud cover in December: 56
The month with the most cloud cover is February (Cloud cover 61).
The month with the least cloud cover is August (Cloud cover 39).
Average visibility in December
Mattawamkeag, ME
- Average visibility in December: 5mi
The months with the highest visibility are January, March, April, May, June, July, August, September, October, November and December (5mi).
The month with the lowest visibility is February (4mi).
Mattawamkeag, Maine, USA
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