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
December brings a drop in Swiftwater's average high-temperature, falling from a frosty 45.9°F (7.7°C) in November to an icy 36.3°F (2.4°C). Throughout the December nights, Swiftwater encounters a low-temperature of 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
Months with snowfall are January through May, October through December. In Swiftwater, Pennsylvania, during December, snow falls for 13.1 days and regularly aggregates up to 6.89" (175mm) of snow. Throughout the year, there are 66.6 snowfall days, and 42.24" (1073mm) of snow is accumulated.Daylight
The month with the shortest days in Swiftwater is December, with an average of 9h and 18min of daylight.On the first day of December, sunrise is at 7:07 am and sunset at 4:33 pm. On the last day of the month, sunrise is at 7:26 am and sunset at 4:42 pm EST.
Sunshine
The average sunshine in December is 4.2h.UV index
The month with the lowest UV index is December, with an average maximum UV index of 1. A UV Index estimate of 2, and below, represents a minimal health hazard from exposure to the Sun's UV radiation for the ordinary person.Note: In December, a daily UV index of 1 turns into the following recommendations:
Most individuals face no significant issues with extended sun exposure, but it is always essential to protect children, babies, and those with sensitive skin. To protect against the Sun's most potent rays, avoid direct exposure around midday. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection. Mind you! Snow reflection can increase the intensity of the Sun's UV radiation nearly twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is it in December?
What is the most humid month?
What is the average humidity in December?
How much does it rain in Swiftwater in December?
How many days does it snow in December?
What is the month with the shortest days?
How many hours of daylight does Swiftwater have in December?
What time are sunrise and sunset in December?
How long on average sun shines in December?
When is the lowest UV index?
How high is the UV index in December?
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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