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, from a wintry 37.4°F (3°C) to a freezing cold 25.7°F (-3.5°C). In the month of December, Rockwood records a consistent average low-temperature of 15.6°F (-9.1°C).Humidity
In December, the average relative humidity is 86%.Rainfall
In Rockwood, in December, it is raining for 8.9 days, with typically 2.13" (54mm) of accumulated precipitation. In Rockwood, during the entire year, the rain falls for 143.8 days and collects up to 24.41" (620mm) of precipitation.Snowfall
Months with snowfall are January through May, October through December. The month with the most snowfall is December, when snow falls for 17.9 days and typically aggregates up to 9.53" (242mm) of snow.Daylight
The month with the shortest days is December, with an average of 8h and 48min of daylight.On the first day of December, sunrise is at 6:59 am and sunset at 3:56 pm. On the last day of the month, sunrise is at 7:19 am and sunset at 4:04 pm EST.
Sunshine
In December, the average sunshine is 3.3h.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 of 2, and less, symbolizes a low threat to health from exposure to the Sun's UV rays for average individuals.Note: In December, the maximum UV index of 1 suggests this advice:
Prolonged sun exposure generally does not trouble most people. However, it is vital to ensure protection for babies, children, and individuals with sensitive skin. Considering the Sun's intensity during midday, it's wise to minimize direct exposure. Employ a wide-brim hat for potent defense against up to 50% of UV rays. 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 December?
What is the average humidity in December?
How many days does it rain in December?
When does it snow the most?
How many days does it snow in December?
What is the month with the shortest days in Rockwood?
How many hours of daylight does Rockwood have in December?
When is the sunrise / sunset in December?
How many hours of sunshine does Rockwood have in December?
What is the month with the lowest UV index?
What is the UV index reading in December?
Average temperature in December
Rockwood, ME
- Average high temperature in December: 25.7°F
The warmest month (with the highest average high temperature) is July (74.5°F).
The month with the lowest average high temperature is January (20.3°F).
- Average low temperature in December: 15.6°F
The month with the highest average low temperature is July (54.3°F).
The coldest month (with the lowest average low temperature) is January (7.7°F).
Average pressure in December
Rockwood, ME
- Average pressure in December: 30.02"Hg
The month with the highest atmospheric pressure is November (30.04"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).
Average wind speed in December
Rockwood, ME
- Average wind speed in December: 7.5mph
The windiest month (with the highest average wind speed) is March (8mph).
The calmest month (with the lowest average wind speed) is August (5.7mph).
Average humidity in December
Rockwood, ME
- Average humidity in December: 86%
The month with the highest relative humidity is February (90%).
The month with the lowest relative humidity is May (76%).
Average rainfall in December
Rockwood, ME
- Average rainfall in December: 2.13"
The wettest month (with the highest rainfall) is June (2.64").
The driest month (with the least rainfall) is February (1.42").
Average rainfall days in December
Rockwood, ME
- Average rainfall days in December: 8.9 days
The months with the highest number of rainy days are May and June (16.9 days).
The month with the least rainy days is February (4.8 days).
Average snowfall in December
Rockwood, ME
- Average snowfall in December: 9.53"
The month with the highest snowfall is December (9.53").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Rockwood, ME
- Average snowfall days in December: 17.9 days
The month with the highest number of snowfall days is February (20 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Rockwood, 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: 3h and 2min
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 36min).
Average sunshine days in December
Rockwood, ME
- Average sunshine days in December: 10.9 days
The month with the most sunshine days is September (15.9 days).
The month with the least sunshine days is February (8.4 days).
Average UV index in December
Rockwood, 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
Rockwood, ME
- Average cloud cover in December: 68
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
Rockwood, ME
- Average visibility in December: 4mi
The months with the highest visibility are May, June, July, September, October and November (5mi).
The months with the lowest visibility are January, February, March, April, August and December (4mi).
Rockwood, Maine, USA
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