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
Observing a mild shift, the average high-temperature during December reduces from November's frosty 43.3°F (6.3°C) to a cold 34°F (1.1°C). Throughout December, the average low-temperature in Custer City, Pennsylvania, records at a freezing cold 23.9°F (-4.5°C).Humidity
The average relative humidity in December is 88%.Rainfall
In December, in Custer City, Pennsylvania, the rain falls for 10 days. Throughout December, 3.15" (80mm) of precipitation is accumulated. In Custer City, Pennsylvania, during the entire year, the rain falls for 176.7 days and collects up to 34.76" (883mm) of precipitation.Snowfall
Months with snowfall are January through May, October through December. In Custer City, Pennsylvania, during December, snow falls for 20.7 days and regularly aggregates up to 12.17" (309mm) of snow. In Custer City, during the entire year, snow falls for 103 days and aggregates up to 61.22" (1555mm) of snow.Daylight
December has the shortest days of the year, with an average of 9h and 12min of daylight.On the first day of December in Custer City, sunrise is at 7:23 am and sunset at 4:44 pm. On the last day of the month, sunrise is at 7:42 am and sunset at 4:53 pm EST.
Sunshine
In December, the average sunshine in Custer City is 2.5h.UV index
January and December, with an average maximum UV index of 1, are months with the lowest UV index. A UV Index of 2, and less, symbolizes a low health risk from exposure to the Sun's UV radiation for average individuals.Note: In December, the maximum UV index of 1 translates into these guidelines:
Most individuals face no major issues with lengthy exposure to the sun, but children, infants, and individuals with fair skin always require protection. Around midday, solar radiation is most harmful; hence, exposure should be limited. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation. On your guard! Snow's reflection can almost double the intensity of the Sun's UV radiation.
Frequently asked questions
How cold is it in Custer City in December?
What is the average humidity in December in Custer City?
How many days does it rain in December in Custer City?
How many days does it snow in December in Custer City?
What is the month with the shortest days in Custer City?
How many hours of daylight does Custer City have in December?
When are sunrise and sunset in December in Custer City?
How many hours of sunshine does Custer City have in December?
What is the month with the lowest UV index in Custer City?
What is the UV index intensity in December in Custer City?
Average temperature in December
Custer City, PA
- Average high temperature in December: 34°F
The warmest month (with the highest average high temperature) is July (78.8°F).
The month with the lowest average high temperature is January (27.9°F).
- Average low temperature in December: 23.9°F
The month with the highest average low temperature is July (56.8°F).
The coldest month (with the lowest average low temperature) is January (15.6°F).
Average pressure in December
Custer City, PA
- Average pressure in December: 30.09"Hg
The month with the highest atmospheric pressure is November (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed in December
Custer City, PA
- Average wind speed in December: 8.6mph
The windiest month (with the highest average wind speed) is January (9.3mph).
The calmest month (with the lowest average wind speed) is August (5.6mph).
Average humidity in December
Custer City, PA
- Average humidity in December: 88%
The month with the highest relative humidity is February (89%).
The months with the lowest relative humidity are May, June and July (79%).
Average rainfall in December
Custer City, PA
- Average rainfall in December: 3.15"
The wettest month (with the highest rainfall) is April (3.94").
The driest month (with the least rainfall) is September (2.17").
Average rainfall days in December
Custer City, PA
- Average rainfall days in December: 10 days
The month with the highest number of rainy days is May (19.8 days).
The month with the least rainy days is January (8 days).
Average snowfall in December
Custer City, PA
- Average snowfall in December: 12.17"
The month with the highest snowfall is February (13.74").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Custer City, PA
- Average snowfall days in December: 20.7 days
The month with the highest number of snowfall days is January (23 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Custer City, PA
- Average daylight in December: 9h and 1min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in December: 2h and 3min
The month with the most sunshine is July (Average sunshine: 9h and 30min).
The month with the least sunshine is January (Average sunshine: 2h and 24min).
Average sunshine days in December
Custer City, PA
- Average sunshine days in December: 5.5 days
The month with the most sunshine days is September (12.2 days).
The month with the least sunshine days is January (4.8 days).
Average UV index in December
Custer City, PA
- Average UV index in December: 1
The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in December
Custer City, PA
- Average cloud cover in December: 77
The month with the most cloud cover is January (Cloud cover 79).
The months with the least cloud cover are July and August (Cloud cover 43).
Average visibility in December
Custer City, PA
- Average visibility in December: 4mi
The months with the highest visibility are March, April, May, June, July, October and November (5mi).
The months with the lowest visibility are January, February, August, September and December (4mi).
Custer City, Pennsylvania, USA
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