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
The onset of December results in a small decrease in the average high-temperature, moderately receding from a cool 52.2°F (11.2°C) in November to a chilly 43.5°F (6.4°C). The nights of December in Lenni, Pennsylvania, anticipate an average low-temperature of 32.5°F (0.3°C).Humidity
In Lenni, Pennsylvania, the average relative humidity in December is 77%.Rainfall
In Lenni, Pennsylvania, in December, it is raining for 11.1 days, with typically 3.31" (84mm) of accumulated precipitation. Throughout the year, there are 166.6 rainfall days, and 35.59" (904mm) of precipitation is accumulated.Snowfall
Months with snowfall in Lenni are January through May, October through December. In December, in Lenni, it is snowing for 3.4 days. Throughout December, 1.61" (41mm) of snow is accumulated. In Lenni, Pennsylvania, during the entire year, snow falls for 22 days and aggregates up to 11.81" (300mm) of snow.Daylight
The month with the shortest days in Lenni is December, with an average of 9h and 24min of daylight.On the first day of the month, sunrise is at 7:04 am and sunset at 4:37 pm. On the last day of December, sunrise is at 7:23 am and sunset at 4:47 pm EST.
Sunshine
In Lenni, the average sunshine in December is 5h.UV index
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Lenni, Pennsylvania. A UV Index value of 2, and less, symbolizes a low threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The maximum daily UV index, 2 in December, converts into the following recommendations:
The majority are not significantly affected by prolonged sun exposure. Infants, children, and those with fair skin must always have protection. Avoiding direct sunlight during midday hours helps reduce the risk from intense UV radiation. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat. Consider this! The reflection from snow can almost double the intensity of the Sun's UV radiation.
Frequently asked questions
How cold is it in Lenni in December?
What is the average humidity in December in Lenni?
How many days does it rain in December in Lenni?
How much does it snow in Lenni in December?
What is the month with the shortest days in Lenni?
How many hours of daylight does Lenni have in December?
When are sunrise and sunset in December in Lenni?
How many hours of sunshine does Lenni have in December?
What are the months with the lowest UV index in Lenni?
What is the UV index intensity in December in Lenni?
Average temperature in December
Lenni, PA
- Average high temperature in December: 43.5°F
The warmest month (with the highest average high temperature) is July (85.6°F).
The month with the lowest average high temperature is January (37°F).
- Average low temperature in December: 32.5°F
The month with the highest average low temperature is July (68.5°F).
The coldest month (with the lowest average low temperature) is January (25.3°F).
Average pressure in December
Lenni, PA
- Average pressure in December: 30.1"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
Lenni, 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 (5.4mph).
Average humidity in December
Lenni, PA
- Average humidity in December: 77%
The months with the highest relative humidity are February and October (78%).
The month with the lowest relative humidity is April (72%).
Average rainfall in December
Lenni, PA
- Average rainfall in December: 3.31"
The wettest month (with the highest rainfall) is August (4.09").
The driest month (with the least rainfall) is January (2.36").
Average rainfall days in December
Lenni, PA
- Average rainfall days in December: 11.1 days
The month with the highest number of rainy days is May (18.5 days).
The month with the least rainy days is January (8.6 days).
Average snowfall in December
Lenni, PA
- Average snowfall in December: 1.61"
The month with the highest snowfall is February (3.19").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Lenni, PA
- Average snowfall days in December: 3.4 days
The month with the highest number of snowfall days is January (6.9 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Lenni, 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: 5h and 0min
The month with the most sunshine is July (Average sunshine: 10h and 30min).
The month with the least sunshine is February (Average sunshine: 4h and 48min).
Average sunshine days in December
Lenni, PA
- Average sunshine days in December: 16.5 days
The month with the most sunshine days is November (18.4 days).
The month with the least sunshine days is July (10 days).
Average UV index in December
Lenni, PA
- Average UV index in December: 2
The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in December
Lenni, PA
- Average cloud cover in December: 47
The months with the most cloud cover are February and March (Cloud cover 48).
The month with the least cloud cover is July (Cloud cover 32).
Average visibility in December
Lenni, PA
- Average visibility in December: 6mi
The months with the highest visibility are January, February, March, April, June, July, August, October, November and December (6mi).
The months with the lowest visibility are May and September (5mi).
Lenni, Pennsylvania, USA
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