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
With the beginning of December, the average high-temperature shows a decrease, transitioning from a wintry 42.1°F (5.6°C) in November to a freezing cold 31.1°F (-0.5°C). An average low-temperature of 20.3°F (-6.5°C) is observed during December nights.Humidity
In December, the average relative humidity in Grand Lake Stream is 83%.Rainfall
In Grand Lake Stream, in December, during 8.7 rainfall days, 1.46" (37mm) of precipitation is typically accumulated. Throughout the year, there are 122.6 rainfall days, and 14.53" (369mm) of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall. In December, it is snowing for 10.3 days. Throughout December, 3.11" (79mm) of snow is accumulated. In Grand Lake Stream, Maine, during the entire year, snow falls for 60.6 days and aggregates up to 17.91" (455mm) of snow.Daylight
December has the shortest days of the year in Grand Lake Stream, with an average of 8h and 48min of daylight.On the first day of the month, sunrise is at 6:50 am and sunset at 3:50 pm. On the last day of December, sunrise is at 7:09 am and sunset at 3:58 pm EST.
Sunshine
In December, the average sunshine is 4h.UV index
February, November and December, with an average maximum UV index of 1, are months with the lowest UV index. A UV Index estimate of 2, and below, represents a low health risk from exposure to the Sun's UV radiation for average individuals.Note: A maximum daily UV index of 1 during December morphs into the following directions:
Protection from prolonged sun exposure is necessary for babies, children, and individuals with sensitive skin. Being in direct Sun during midday can be harmful due to intense solar radiation; take precautions. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation. Remember! The Sun's UV radiation can be magnified almost twofold by the reflection of snow.
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?
How much does it rain in Grand Lake Stream in December?
How many days does it snow in December?
What is the month with the shortest days?
How many hours of daylight does Grand Lake Stream have in December?
What time are sunrise and sunset in December?
How many hours of sunshine does Grand Lake Stream have in December?
When is the lowest UV index?
What is the UV index reading in December?
Average temperature in December
Grand Lake Stream, ME
- Average high temperature in December: 31.1°F
The warmest month (with the highest average high temperature) is July (77.2°F).
The month with the lowest average high temperature is January (25.5°F).
- Average low temperature in December: 20.3°F
The month with the highest average low temperature is July (56.1°F).
The coldest month (with the lowest average low temperature) is January (12.4°F).
Average pressure in December
Grand Lake Stream, ME
- Average pressure in December: 29.99"Hg
The month with the highest atmospheric pressure is September (30.03"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in December
Grand Lake Stream, ME
- Average wind speed in December: 7.4mph
The windiest month (with the highest average wind speed) is March (8mph).
The calmest month (with the lowest average wind speed) is August (5.6mph).
Average humidity in December
Grand Lake Stream, 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 (77%).
Average rainfall in December
Grand Lake Stream, ME
- Average rainfall in December: 1.46"
The wettest month (with the highest rainfall) is November (1.61").
The driest month (with the least rainfall) is September (0.91").
Average rainfall days in December
Grand Lake Stream, ME
- Average rainfall days in December: 8.7 days
The month with the highest number of rainy days is April (14.2 days).
The month with the least rainy days is February (5.1 days).
Average snowfall in December
Grand Lake Stream, ME
- Average snowfall in December: 3.11"
The month with the highest snowfall is February (3.7").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Grand Lake Stream, ME
- Average snowfall days in December: 10.3 days
The month with the highest number of snowfall days is March (13.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Grand Lake Stream, 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 0min
The month with the most sunshine is August (Average sunshine: 9h and 48min).
The month with the least sunshine is February (Average sunshine: 3h and 18min).
Average sunshine days in December
Grand Lake Stream, ME
- Average sunshine days in December: 16.1 days
The month with the most sunshine days is September (18.4 days).
The month with the least sunshine days is April (11.6 days).
Average UV index in December
Grand Lake Stream, ME
- Average UV index in December: 1
The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are February, November and December (UV index 1).
Average cloud cover in December
Grand Lake Stream, ME
- Average cloud cover in December: 58
The month with the most cloud cover is February (Cloud cover 63).
The month with the least cloud cover is August (Cloud cover 42).
Average visibility in December
Grand Lake Stream, 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).
Grand Lake Stream, Maine, USA
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