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 arrival of December signals a shift in temperature, down from a frosty 48.7°F (9.3°C) in November to an icy 39°F (3.9°C). South Greensburg throughout December, experiences an average nighttime temperature of 27.9°F (-2.3°C).Humidity
In December, the average relative humidity in South Greensburg is 84%.Rainfall
In South Greensburg, in December, during 13.5 rainfall days, 3.07" (78mm) of precipitation is typically accumulated. Throughout the year, in South Greensburg, there are 186 rainfall days, and 34.84" (885mm) of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall in South Greensburg. In South Greensburg, Pennsylvania, in December, snow falls for 12.8 days, with typically accumulated 5.67" (144mm) of snow. Throughout the year, in South Greensburg, there are 63.3 snowfall days, and 27.44" (697mm) of snow is accumulated.Daylight
With an average of 9h and 24min of daylight, December has the shortest days of the year in South Greensburg.On the first day of December, sunrise is at 7:22 am and sunset at 4:52 pm. On the last day of the month, sunrise is at 7:40 am and sunset at 5:02 pm EST.
Sunshine
In South Greensburg, the average sunshine in December is 3.5h.UV index
December is the month with the lowest UV index in South Greensburg, with an average maximum UV index of 1. A UV Index estimate of 2, and below, represents a minimal health vulnerability from unsafe exposure to UV radiation for ordinary individuals.Note: The maximum UV index of 1 during December translates into these guidelines:
While most people are not greatly affected by extended sun exposure, those with fair skin, babies, and children must always have protection. UV radiation is strongest from the Sun during midday; protect yourself by staying in shaded areas. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes. Guard yourself! Snow reflection can almost double the UV radiation from the Sun.
Frequently asked questions
How cold is it in South Greensburg in December?
What is the average humidity in December in South Greensburg?
How many days does it rain in December in South Greensburg?
How many days does it snow in December in South Greensburg?
What is the month with the shortest days in South Greensburg?
What is the average length of the day in December in South Greensburg?
When is the sunrise / sunset in December in South Greensburg?
How long on average sun shines in December in South Greensburg?
What is the month with the lowest UV index in South Greensburg?
What is the UV index intensity in December in South Greensburg?
Average temperature in December
South Greensburg, PA
- Average high temperature in December: 39°F
The warmest month (with the highest average high temperature) is July (82°F).
The month with the lowest average high temperature is January (32.9°F).
- Average low temperature in December: 27.9°F
The month with the highest average low temperature is July (60.6°F).
The coldest month (with the lowest average low temperature) is January (20.3°F).
Average pressure in December
South Greensburg, PA
- Average pressure in December: 30.11"Hg
The month with the highest atmospheric pressure is November (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).
Average wind speed in December
South Greensburg, PA
- Average wind speed in December: 7.9mph
The windiest month (with the highest average wind speed) is January (8.5mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).
Average humidity in December
South Greensburg, PA
- Average humidity in December: 84%
The months with the highest relative humidity are January and February (85%).
The months with the lowest relative humidity are April, July and August (77%).
Average rainfall in December
South Greensburg, PA
- Average rainfall in December: 3.07"
The wettest month (with the highest rainfall) is May (3.74").
The driest month (with the least rainfall) is November (2.01").
Average rainfall days in December
South Greensburg, PA
- Average rainfall days in December: 13.5 days
The month with the highest number of rainy days is May (20.9 days).
The month with the least rainy days is January (9.8 days).
Average snowfall in December
South Greensburg, PA
- Average snowfall in December: 5.67"
The month with the highest snowfall is January (6.65").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
South Greensburg, PA
- Average snowfall days in December: 12.8 days
The month with the highest number of snowfall days is January (17.6 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
South Greensburg, 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 3min
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
South Greensburg, PA
- Average sunshine days in December: 8.8 days
The month with the most sunshine days is November (13.5 days).
The month with the least sunshine days is January (6.4 days).
Average UV index in December
South Greensburg, PA
- Average UV index in December: 1
The months with the highest UV index are June and July (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in December
South Greensburg, PA
- Average cloud cover in December: 65
The month with the most cloud cover is January (Cloud cover 70).
The month with the least cloud cover is August (Cloud cover 35).
Average visibility in December
South Greensburg, PA
- Average visibility in December: 5mi
The month with the highest visibility is April (6mi).
The months with the lowest visibility are January and February (4mi).
South Greensburg, Pennsylvania, USA
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