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
Arrowhead Lake's progression into December includes a drop in the average high-temperature, from a frosty 45.5°F (7.5°C) in November to an icy 36.3°F (2.4°C). In the month of December, Arrowhead Lake's average low-temperature falls to a freezing cold 25.5°F (-3.6°C).Humidity
The months with the highest humidity are February and December, with an average relative humidity of 84%.Rainfall
In Arrowhead Lake, in December, it is raining for 7.7 days, with typically 0.75" (19mm) of accumulated precipitation. In Arrowhead Lake, during the entire year, the rain falls for 121.5 days and collects up to 10.51" (267mm) of precipitation.Snowfall
Months with snowfall are January through May, October through December. In Arrowhead Lake, in December, during 9.1 snowfall days, 1.38" (35mm) of snow is typically accumulated. In Arrowhead Lake, during the entire year, snow falls for 47 days and aggregates up to 8.23" (209mm) of snow.Daylight
December has the shortest days of the year, with an average of 9h and 18min of daylight.On the first day of the month, sunrise is at 7:08 am and sunset at 4:34 pm. On the last day of December, sunrise is at 7:27 am and sunset at 4:43 pm EST.
Sunshine
In Arrowhead Lake, Pennsylvania, the average sunshine in December is 3.9h.UV index
With an average maximum UV index of 1, December is the month 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 radiation for the ordinary person.Note: A daily high UV index of 1 in December leads to these guidelines:
Children, infants, and individuals with sensitive skin should be constantly protected from extended sun exposure. To protect against the Sun's most potent rays, avoid direct exposure around midday. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration. Forewarned is forearmed! The Sun's UV radiation can be almost doubled in intensity by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is it in December?
What is the most humid month?
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?
How many hours of daylight does Arrowhead Lake have in December?
When are sunrise and sunset in December?
How long on average sun shines in December?
What is the month with the lowest UV index?
What is the UV index reading in December?
Average temperature in December
Arrowhead Lake, PA
- Average high temperature in December: 36.3°F
The warmest month (with the highest average high temperature) is July (80.4°F).
The month with the lowest average high temperature is January (30.6°F).
- Average low temperature in December: 25.5°F
The month with the highest average low temperature is July (60.1°F).
The coldest month (with the lowest average low temperature) is January (18.7°F).
Average pressure in December
Arrowhead Lake, PA
- Average pressure in December: 30.09"Hg
The month with the highest atmospheric pressure is November (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed in December
Arrowhead Lake, PA
- Average wind speed in December: 8mph
The windiest months (with the highest average wind speed) are January and March (8.5mph).
The calmest month (with the lowest average wind speed) is August (5.3mph).
Average humidity in December
Arrowhead Lake, PA
- Average humidity in December: 84%
The months with the highest relative humidity are February and December (84%).
The months with the lowest relative humidity are April, June and July (78%).
Average rainfall in December
Arrowhead Lake, PA
- Average rainfall in December: 0.75"
The wettest month (with the highest rainfall) is July (1.22").
The driest month (with the least rainfall) is September (0.51").
Average rainfall days in December
Arrowhead Lake, PA
- Average rainfall days in December: 7.7 days
The month with the highest number of rainy days is May (14.1 days).
The month with the least rainy days is February (6.3 days).
Average snowfall in December
Arrowhead Lake, PA
- Average snowfall in December: 1.38"
The months with the highest snowfall are January, February and March (1.73").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Arrowhead Lake, PA
- Average snowfall days in December: 9.1 days
The month with the highest number of snowfall days is February (11.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Arrowhead Lake, PA
- Average daylight in December: 9h and 2min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in December: 3h and 5min
The month with the most sunshine is July (Average sunshine: 10h and 0min).
The month with the least sunshine is February (Average sunshine: 3h and 48min).
Average sunshine days in December
Arrowhead Lake, PA
- Average sunshine days in December: 18 days
The month with the most sunshine days is November (19.8 days).
The month with the least sunshine days is May (12.5 days).
Average UV index in December
Arrowhead Lake, PA
- Average UV index in December: 1
The months with the highest UV index are May, June, July and August (UV index 5).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in December
Arrowhead Lake, PA
- Average cloud cover in December: 60
The months with the most cloud cover are February and December (Cloud cover 60).
The month with the least cloud cover is July (Cloud cover 38).
Average visibility in December
Arrowhead Lake, PA
- Average visibility in December: 5mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (5mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (5mi).
Arrowhead Lake, Pennsylvania, USA
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