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
December comes with a decrease in the average high-temperature, falling from a chilly 45°F (7.2°C) in November to a wintry 34.2°F (1.2°C). The average temperature drops to a subzero cold 23.7°F (-4.6°C) during the night in the month of December.Humidity
In December, the average relative humidity is 78%.Rainfall
In Lisbon, during December, the rain falls for 9.6 days and regularly aggregates up to 2.91" (74mm) of precipitation. Throughout the year, there are 130.3 rainfall days, and 27.87" (708mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, October through December. In December, it is snowing for 8.3 days. Throughout December, 4.88" (124mm) of snow is accumulated. In Lisbon, during the entire year, snow falls for 42.7 days and aggregates up to 25.55" (649mm) of snow.Daylight
With an average of 9h and 0min of daylight, December has the shortest days of the year in Lisbon.On the first day of December, sunrise is at 6:55 am and sunset at 4:03 pm. On the last day of the month, sunrise is at 7:15 am and sunset at 4:12 pm EST.
Sunshine
The average sunshine in December is 4.5h.UV index
The months with the lowest UV index are January through March, October through December, with an average maximum UV index of 2. A UV Index estimate of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV rays for the ordinary person.Note: A daily maximum UV index of 2 in December translates into the following instructions:
Children, infants, and individuals with sensitive skin should be constantly protected from extended sun exposure. The solar radiation around mid-day is intense; avoid the Sun and stay safe. Boost your sun resistance with garments that are densely woven yet spacious. Alert! The snow's reflection can amplify the UV radiation of the Sun nearly twice.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is December in Lisbon?
What is the average humidity in December?
How much does it rain in December?
How much does it snow in Lisbon in December?
What is the month with the shortest days?
What is the average length of the day in December?
When is the sunrise / sunset in December?
How long on average sun shines in December in Lisbon?
What is the month with the lowest UV index?
What is the UV index intensity in December?
Average temperature in December
Lisbon, ME
- Average high temperature in December: 34.2°F
The warmest month (with the highest average high temperature) is July (77°F).
The month with the lowest average high temperature is January (28°F).
- Average low temperature in December: 23.7°F
The month with the highest average low temperature is July (59°F).
The coldest month (with the lowest average low temperature) is January (15.1°F).
Average pressure in December
Lisbon, ME
- Average pressure in December: 30.01"Hg
The month with the highest atmospheric pressure is November (30.05"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in December
Lisbon, ME
- Average wind speed in December: 8.1mph
The windiest month (with the highest average wind speed) is March (8.7mph).
The calmest month (with the lowest average wind speed) is August (5.6mph).
Average humidity in December
Lisbon, ME
- Average humidity in December: 78%
The months with the highest relative humidity are January, February and March (82%).
The months with the lowest relative humidity are April and November (76%).
Average rainfall in December
Lisbon, ME
- Average rainfall in December: 2.91"
The wettest month (with the highest rainfall) is October (3.03").
The driest month (with the least rainfall) is September (1.42").
Average rainfall days in December
Lisbon, ME
- Average rainfall days in December: 9.6 days
The month with the highest number of rainy days is April (14.6 days).
The month with the least rainy days is January (5.2 days).
Average snowfall in December
Lisbon, ME
- Average snowfall in December: 4.88"
The month with the highest snowfall is January (6.18").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Lisbon, ME
- Average snowfall days in December: 8.3 days
The month with the highest number of snowfall days is January (9.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Lisbon, 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 3min
The month with the most sunshine is August (Average sunshine: 9h and 54min).
The month with the least sunshine is February (Average sunshine: 4h and 24min).
Average sunshine days in December
Lisbon, ME
- Average sunshine days in December: 14.1 days
The month with the most sunshine days is September (18.9 days).
The month with the least sunshine days is April (12.5 days).
Average UV index in December
Lisbon, 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
Lisbon, ME
- Average cloud cover in December: 52
The months with the most cloud cover are February, March and April (Cloud cover 53).
The months with the least cloud cover are August and September (Cloud cover 37).
Average visibility in December
Lisbon, ME
- Average visibility in December: 6mi
The months with the highest visibility are January, February, March, April, October, November and December (6mi).
The months with the lowest visibility are May, June, July, August and September (5mi).
Lisbon, Maine, USA
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