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
In December, the average high-temperature marginally drops from a fresh 50.2°F (10.1°C) in November to a cold 41.4°F (5.2°C). In Mount Penn, an average low-temperature of 30°F (-1.1°C) is recorded during December nights.Humidity
In December, the average relative humidity is 80%.Rainfall
In Mount Penn, in December, it is raining for 8.4 days, with typically 0.91" (23mm) of accumulated precipitation. Throughout the year, in Mount Penn, there are 129 rainfall days, and 13.5" (343mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, November and December. In Mount Penn, in December, during 3.2 snowfall days, 0.39" (10mm) of snow is typically accumulated. Throughout the year, there are 19.4 snowfall days, and 4.45" (113mm) of snow is accumulated.Daylight
December has the shortest days of the year in Mount Penn, with an average of 9h and 24min of daylight.On the first day of the month, sunrise is at 7:07 am and sunset at 4:37 pm. On the last day of December, sunrise is at 7:26 am and sunset at 4:47 pm EST.
Sunshine
In Mount Penn, Pennsylvania, the average sunshine in December is 4.8h.UV index
The months with the lowest UV index in Mount Penn, Pennsylvania, are January through March, November and December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a minimal health hazard from unsafe exposure to UV radiation for average individuals.Note: A maximum high daily UV index of 2 during December translates into the following directions:
Though extended exposure to the sun typically does not concern most people, it is crucial to always shield children, infants, and those with sensitive skin. The intensity of the Sun's UV radiation during midday suggests reducing time spent outdoors. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly. Take heed! Reflection from the snow can almost amplify the Sun's UV radiation by double.
Frequently asked questions
Is December cold in Mount Penn?
What is the average humidity in December in Mount Penn?
How much does it rain in Mount Penn in December?
How many days does it snow in December in Mount Penn?
What is the month with the shortest days in Mount Penn?
What is the average length of the day in December in Mount Penn?
When is the sunrise / sunset in December in Mount Penn?
How many hours of sunshine does Mount Penn have in December?
What is the month with the lowest UV index in Mount Penn?
What is the UV index reading in December in Mount Penn?
Average temperature in December
Mount Penn, PA
- Average high temperature in December: 41.4°F
The warmest month (with the highest average high temperature) is July (83.5°F).
The month with the lowest average high temperature is January (35.2°F).
- Average low temperature in December: 30°F
The month with the highest average low temperature is July (64°F).
The coldest month (with the lowest average low temperature) is January (22.5°F).
Average pressure in December
Mount Penn, PA
- Average pressure in December: 30.1"Hg
The month with the highest atmospheric pressure is November (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed in December
Mount Penn, PA
- Average wind speed in December: 7.8mph
The windiest months (with the highest average wind speed) are January and March (8.3mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).
Average humidity in December
Mount Penn, PA
- Average humidity in December: 80%
The months with the highest relative humidity are February and October (81%).
The month with the lowest relative humidity is April (76%).
Average rainfall in December
Mount Penn, PA
- Average rainfall in December: 0.91"
The wettest month (with the highest rainfall) is August (1.69").
The driest month (with the least rainfall) is February (0.79").
Average rainfall days in December
Mount Penn, PA
- Average rainfall days in December: 8.4 days
The month with the highest number of rainy days is May (15.7 days).
The month with the least rainy days is January (7.1 days).
Average snowfall in December
Mount Penn, PA
- Average snowfall in December: 0.39"
The month with the highest snowfall is February (1.54").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days in December
Mount Penn, PA
- Average snowfall days in December: 3.2 days
The month with the highest number of snowfall days is January (6 days).
The months with the least snowfall days are June, July, August, September and October (0 days).
Average daylight in December /
Average sunshine in December
Mount Penn, PA
- Average daylight in December: 9h and 2min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in December: 4h and 5min
The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is February (Average sunshine: 4h and 42min).
Average sunshine days in December
Mount Penn, PA
- Average sunshine days in December: 19.3 days
The month with the most sunshine days is November (20.4 days).
The month with the least sunshine days is May (12.3 days).
Average UV index in December
Mount Penn, PA
- Average UV index in December: 2
The months with the highest UV index are May, June and July (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover in December
Mount Penn, PA
- Average cloud cover in December: 48
The month with the most cloud cover is February (Cloud cover 49).
The month with the least cloud cover is July (Cloud cover 31).
Average visibility in December
Mount Penn, PA
- Average visibility in December: 6mi
The months with the highest visibility are January, February, March, April, June, July, August, November and December (6mi).
The months with the lowest visibility are May, September and October (5mi).
Mount Penn, Pennsylvania, USA
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