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 decrease of average high-temperatures is mild in December, with a decline from a frosty 43.7°F (6.5°C) in November to a cold 34.3°F (1.3°C). Throughout December, the nighttime temperature in Keating Summit, Pennsylvania, averages to a subzero cold 24.1°F (-4.4°C).Humidity
In December, the average relative humidity is 87%.Rainfall
In Keating Summit, in December, during 9.8 rainfall days, 2.44" (62mm) of precipitation is typically accumulated. Throughout the year, in Keating Summit, there are 162.1 rainfall days, and 27.36" (695mm) of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall in Keating Summit. In Keating Summit, in December, during 19.2 snowfall days, 9.37" (238mm) of snow is typically accumulated. Throughout the year, in Keating Summit, there are 96.1 snowfall days, and 45.55" (1157mm) of snow is accumulated.Daylight
The month with the shortest days in Keating Summit, Pennsylvania, is December, with an average of 9h and 12min of daylight.On the first day of December, sunrise is at 7:20 am and sunset at 4:43 pm. On the last day of the month, sunrise is at 7:39 am and sunset at 4:52 pm EST.
Sunshine
The months with the least sunshine in Keating Summit are January and December, with an average of 2.6h of sunshine.UV index
The months with the lowest UV index are January and December, with an average maximum UV index of 1. A UV Index reading of 2, and below, represents a minimal health hazard from unprotected exposure to Sun's UV rays for average individuals.Note: A maximum high daily UV index of 1 during December translates into the following directions:
Though extended exposure to the sun typically does not concern most people, it is crucial to always shield children, infants, and those with sensitive skin. Limiting exposure to the direct Sun during midday hours can help prevent harmful UV radiation effects. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance. Be aware! The intensity of the Sun's UV radiation can be amplified nearly twice due to snow reflection.
Frequently asked questions
How cold is it in Keating Summit in December?
What is the average humidity in December in Keating Summit?
How many days does it rain in December in Keating Summit?
How much does it snow in Keating Summit in December?
What is the month with the shortest days in Keating Summit?
How many hours of daylight does Keating Summit have in December?
What time are sunrise and sunset in December in Keating Summit?
What are the months with the least sunshine in Keating Summit?
How many hours of sunshine does Keating Summit have in December?
When is the lowest UV index in Keating Summit?
What is the UV index intensity in December in Keating Summit?
Average temperature in December
Keating Summit, PA
- Average high temperature in December: 34.3°F
The warmest month (with the highest average high temperature) is July (79.2°F).
The month with the lowest average high temperature is January (28°F).
- Average low temperature in December: 24.1°F
The month with the highest average low temperature is July (56.3°F).
The coldest month (with the lowest average low temperature) is January (15.8°F).
Average pressure in December
Keating Summit, 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
Keating Summit, 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
Keating Summit, PA
- Average humidity in December: 87%
The month with the highest relative humidity is February (88%).
The month with the lowest relative humidity is June (78%).
Average rainfall in December
Keating Summit, PA
- Average rainfall in December: 2.44"
The wettest month (with the highest rainfall) is April (3.07").
The driest month (with the least rainfall) is August (1.85").
Average rainfall days in December
Keating Summit, PA
- Average rainfall days in December: 9.8 days
The month with the highest number of rainy days is May (17.5 days).
The month with the least rainy days is January (7.3 days).
Average snowfall in December
Keating Summit, PA
- Average snowfall in December: 9.37"
The month with the highest snowfall is February (10.51").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Keating Summit, PA
- Average snowfall days in December: 19.2 days
The month with the highest number of snowfall days is January (21.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Keating Summit, 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 4min
The month with the most sunshine is July (Average sunshine: 9h and 36min).
The months with the least sunshine are January and December (Average sunshine: 2h and 36min).
Average sunshine days in December
Keating Summit, PA
- Average sunshine days in December: 6.9 days
The month with the most sunshine days is September (13.7 days).
The month with the least sunshine days is February (5.2 days).
Average UV index in December
Keating Summit, 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
Keating Summit, PA
- Average cloud cover in December: 75
The month with the most cloud cover is January (Cloud cover 77).
The month with the least cloud cover is July (Cloud cover 42).
Average visibility in December
Keating Summit, 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).
Keating Summit, Pennsylvania, USA
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