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
As November shifts into December, a slight alteration in temperatures is observed, with average highs reducing from a frosty 49.5°F (9.7°C) to a wintry 40.1°F (4.5°C). December brings with it a nighttime average temperature of 28.6°F (-1.9°C).Humidity
In Keisterville, Pennsylvania, the average relative humidity in December is 83%.Rainfall
In Keisterville, during December, the rain falls for 8.4 days and regularly aggregates up to 1.06" (27mm) of precipitation. In Keisterville, during the entire year, the rain falls for 139.7 days and collects up to 12.95" (329mm) of precipitation.Snowfall
Months with snowfall in Keisterville are January through May, October through December. In Keisterville, Pennsylvania, in December, during 10.8 snowfall days, 2.28" (58mm) of snow is typically accumulated. Throughout the year, there are 53.8 snowfall days, and 10.79" (274mm) of snow is accumulated.Daylight
December has the shortest days of the year in Keisterville, with an average of 9h and 24min of daylight.On the first day of the month, sunrise is at 7:22 am and sunset at 4:54 pm. On the last day of December, in Keisterville, sunrise is at 7:40 am and sunset at 5:04 pm EST.
Sunshine
In December, the average sunshine in Keisterville, Pennsylvania, is 3.6h.UV index
The months with the lowest UV index 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 vulnerability from exposure to the Sun's UV rays for the ordinary person.Note: In December, a daily UV index of 2 turns into the following recommendations:
Sun exposure does not present considerable issues for many, yet infants, fair-skinned people, and children necessitate constant protection. Avoiding direct sun during mid-day hours can prevent harmful UV radiation exposure. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses. Bear in mind! The Sun's UV radiation can nearly double in intensity due to the reflective quality of snow.
Frequently asked questions
Is December cold in Keisterville?
What is the average humidity in December in Keisterville?
How many days does it rain in December in Keisterville?
How many days does it snow in December in Keisterville?
What is the month with the shortest days in Keisterville?
What is the average length of the day in December in Keisterville?
What time are sunrise and sunset in December in Keisterville?
How long on average sun shines in December in Keisterville?
What are the months with the lowest UV index in Keisterville?
What is the UV index intensity in December in Keisterville?
Average temperature in December
Keisterville, PA
- Average high temperature in December: 40.1°F
The warmest month (with the highest average high temperature) is July (82.6°F).
The month with the lowest average high temperature is January (34.2°F).
- Average low temperature in December: 28.6°F
The month with the highest average low temperature is July (60.8°F).
The coldest month (with the lowest average low temperature) is January (21.2°F).
Average pressure in December
Keisterville, PA
- Average pressure in December: 30.11"Hg
The month with the highest atmospheric pressure is November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).
Average wind speed in December
Keisterville, PA
- Average wind speed in December: 7.4mph
The windiest month (with the highest average wind speed) is January (8mph).
The calmest month (with the lowest average wind speed) is August (4.7mph).
Average humidity in December
Keisterville, PA
- Average humidity in December: 83%
The month with the highest relative humidity is February (85%).
The months with the lowest relative humidity are April, July and August (77%).
Average rainfall in December
Keisterville, PA
- Average rainfall in December: 1.06"
The wettest month (with the highest rainfall) is May (1.57").
The driest month (with the least rainfall) is September (0.67").
Average rainfall days in December
Keisterville, PA
- Average rainfall days in December: 8.4 days
The month with the highest number of rainy days is May (16.8 days).
The month with the least rainy days is February (7.7 days).
Average snowfall in December
Keisterville, PA
- Average snowfall in December: 2.28"
The month with the highest snowfall is January (2.64").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Keisterville, PA
- Average snowfall days in December: 10.8 days
The month with the highest number of snowfall days is January (15.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Keisterville, 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: 3h and 4min
The month with the most sunshine is August (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 3h and 0min).
Average sunshine days in December
Keisterville, PA
- Average sunshine days in December: 13.5 days
The month with the most sunshine days is November (17.9 days).
The month with the least sunshine days is January (9.7 days).
Average UV index in December
Keisterville, PA
- Average UV index in December: 2
The month with the highest UV index is 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
Keisterville, PA
- Average cloud cover in December: 64
The month with the most cloud cover is January (Cloud cover 69).
The month with the least cloud cover is August (Cloud cover 35).
Average visibility in December
Keisterville, PA
- Average visibility in December: 5mi
The months with the highest visibility are April and November (6mi).
The months with the lowest visibility are January, February, March, May, June, July, August, September, October and December (5mi).
Keisterville, Pennsylvania, USA
Weather forecast for your location
2. Allow the app to use your location
