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 frosty 45.9°F (7.7°C) in November to an icy 36.5°F (2.5°C). In Penn Lake Park, the December nights cool down to an average low of 25.5°F (-3.6°C).Humidity
February and December, with an average relative humidity of 84%, are the most humid months.Rainfall
In December, the rain falls for 11 days. Throughout December, 2.95" (75mm) of precipitation is accumulated. Throughout the year, there are 163.6 rainfall days, and 35" (889mm) of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall. In Penn Lake Park, during December, snow falls for 10.7 days and regularly aggregates up to 5.87" (149mm) of snow. In Penn Lake Park, Pennsylvania, during the entire year, snow falls for 60.9 days and aggregates up to 38.9" (988mm) of snow.Daylight
With an average of 9h and 18min of daylight, December has the shortest days of the year.On the first day of the month, sunrise is at 7:09 am and sunset at 4:35 pm. On the last day of December, sunrise is at 7:28 am and sunset at 4:44 pm EST.
Sunshine
The average sunshine in December is 3.8h.UV index
December is the month with the lowest UV index, with an average maximum UV index of 1. A UV Index value of 2, and less, symbolizes a low threat to health from exposure to the Sun's UV radiation for average individuals.Note: An average maximum UV index of 1 in December leads to these recommendations:
The majority are not significantly affected by prolonged sun exposure. Infants, children, and those with fair skin must always have protection. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears. Note well! The intensity of the Sun's UV rays can be nearly doubled by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is it in Penn Lake Park in December?
What is the most humid month?
What is the average humidity in December?
How many days does it rain in December in Penn Lake Park?
How many days does it snow in December?
What is the month with the shortest days in Penn Lake Park?
How many hours of daylight does Penn Lake Park have in December?
What time are sunrise and sunset in December?
How many hours of sunshine does Penn Lake Park have in December?
When is the lowest UV index?
What is the UV index reading in December?
Average temperature in December
Penn Lake Park, PA
- Average high temperature in December: 36.5°F
The warmest month (with the highest average high temperature) is July (80.2°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 (60.3°F).
The coldest month (with the lowest average low temperature) is January (18.5°F).
Average pressure in December
Penn Lake Park, 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
Penn Lake Park, PA
- Average wind speed in December: 7.9mph
The windiest month (with the highest average wind speed) is March (8.5mph).
The calmest month (with the lowest average wind speed) is August (5.2mph).
Average humidity in December
Penn Lake Park, PA
- Average humidity in December: 84%
The months with the highest relative humidity are February and December (84%).
The month with the lowest relative humidity is April (78%).
Average rainfall in December
Penn Lake Park, PA
- Average rainfall in December: 2.95"
The wettest month (with the highest rainfall) is May (3.5").
The driest month (with the least rainfall) is September (2.13").
Average rainfall days in December
Penn Lake Park, PA
- Average rainfall days in December: 11 days
The month with the highest number of rainy days is May (19.4 days).
The month with the least rainy days is January (7 days).
Average snowfall in December
Penn Lake Park, PA
- Average snowfall in December: 5.87"
The month with the highest snowfall is February (8.62").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Penn Lake Park, PA
- Average snowfall days in December: 10.7 days
The month with the highest number of snowfall days is January (14.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Penn Lake Park, 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: 9h and 48min).
The month with the least sunshine is February (Average sunshine: 3h and 36min).
Average sunshine days in December
Penn Lake Park, PA
- Average sunshine days in December: 13.2 days
The month with the most sunshine days is November (15.6 days).
The month with the least sunshine days is May (9.2 days).
Average UV index in December
Penn Lake Park, 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
Penn Lake Park, PA
- Average cloud cover in December: 61
The months with the most cloud cover are February and December (Cloud cover 61).
The month with the least cloud cover is July (Cloud cover 38).
Average visibility in December
Penn Lake Park, 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).
Penn Lake Park, Pennsylvania, USA
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