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
Swiftwater experiences a temperature shift at the start of December, with average high-temperatures adjusting from a frosty 45.9°F (7.7°C) in November to a cold 36.3°F (2.4°C). Throughout December, Swiftwater encounters an average temperature drop to a subzero cold 25.7°F (-3.5°C).Humidity
February and December, with an average relative humidity of 84%, are the most humid months.Rainfall
In Swiftwater, during December, the rain falls for 13.2 days and regularly aggregates up to 3.11" (79mm) of precipitation. In Swiftwater, during the entire year, the rain falls for 171 days and collects up to 34.45" (875mm) of precipitation.Snowfall
January through May, October through December are months with snowfall in Swiftwater, Pennsylvania. In Swiftwater, in December, during 13.1 snowfall days, 6.89" (175mm) of snow is typically accumulated. Throughout the year, there are 66.6 snowfall days, and 42.24" (1073mm) of snow is accumulated.Daylight
With an average of 9h and 18min of daylight, December has the shortest days of the year in Swiftwater.On the first day of the month, sunrise is at 7:07 am and sunset at 4:33 pm. On the last day of December, sunrise is at 7:26 am and sunset at 4:42 pm EST.
Sunshine
In Swiftwater, the average sunshine in December is 4.2h.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 health risk from exposure to the Sun's UV radiation for the ordinary person.Note: The daily high UV index of 1 in December translates into this advice:
Although the majority can endure up to an hour in the sun without burns, children always require sun protection. When the Sun is at its strongest around midday, find shade and limit exposure. Always opt for UVA and UVB-resistant sunglasses on radiant days. Be on the lookout! Nearly twofold UV radiation from the Sun can be reflected by snow.
Frequently asked questions
How cold is it in Swiftwater in December?
What is the most humid month in Swiftwater?
What is the average humidity in December in Swiftwater?
How much does it rain in Swiftwater in December?
How much does it snow in Swiftwater in December?
What is the month with the shortest days in Swiftwater?
What is the average length of the day in December in Swiftwater?
When is the sunrise / sunset in December in Swiftwater?
How long on average sun shines in December in Swiftwater?
What is the month with the lowest UV index in Swiftwater?
How high is the UV index in December in Swiftwater?
Average temperature in December
Swiftwater, PA
- Average high temperature in December: 36.3°F
The warmest month (with the highest average high temperature) is July (81°F).
The month with the lowest average high temperature is January (30.9°F).
- Average low temperature in December: 25.7°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
Swiftwater, 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
Swiftwater, PA
- Average wind speed in December: 8mph
The windiest month (with the highest average wind speed) is January (8.6mph).
The calmest month (with the lowest average wind speed) is August (5.2mph).
Average humidity in December
Swiftwater, 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 July (77%).
Average rainfall in December
Swiftwater, PA
- Average rainfall in December: 3.11"
The wettest month (with the highest rainfall) is May (3.5").
The driest month (with the least rainfall) is September (1.73").
Average rainfall days in December
Swiftwater, PA
- Average rainfall days in December: 13.2 days
The month with the highest number of rainy days is May (18.6 days).
The month with the least rainy days is February (10.3 days).
Average snowfall in December
Swiftwater, PA
- Average snowfall in December: 6.89"
The month with the highest snowfall is January (9.72").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Swiftwater, PA
- Average snowfall days in December: 13.1 days
The month with the highest number of snowfall days is January (15.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Swiftwater, 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: 4h and 1min
The month with the most sunshine is July (Average sunshine: 10h and 6min).
The month with the least sunshine is February (Average sunshine: 3h and 54min).
Average sunshine days in December
Swiftwater, PA
- Average sunshine days in December: 12.5 days
The month with the most sunshine days is September (16.5 days).
The month with the least sunshine days is February (8.6 days).
Average UV index in December
Swiftwater, 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
Swiftwater, PA
- Average cloud cover in December: 57
The month with the most cloud cover is February (Cloud cover 58).
The month with the least cloud cover is July (Cloud cover 36).
Average visibility in December
Swiftwater, 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).
Swiftwater, Pennsylvania, USA
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