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
With the beginning of December, the average high-temperature shows a decrease, transitioning from a fresh 51.6°F (10.9°C) in November to a cold 42.6°F (5.9°C). December nights observe an average temperature dip to a subzero cold 30.9°F (-0.6°C).Humidity
The average relative humidity in December in Cannon Run is 78%.Rainfall
In Cannon Run, in December, during 8.6 rainfall days, 1.22" (31mm) of precipitation is typically accumulated. Throughout the year, there are 138.2 rainfall days, and 15.59" (396mm) of precipitation is accumulated.Snowfall
Months with snowfall in Cannon Run are January through March, May and December. December is the first month it typically snows in Cannon Run. Throughout December, in the average 2.6 snowfall days, it receives 0.35" (9mm) of snow. Throughout the year, in Cannon Run, there are 15.8 snowfall days, and 2.13" (54mm) of snow is accumulated.Daylight
The month with the shortest days in Cannon Run is December, with an average of 9h and 24min of daylight.On the first day of December in Cannon Run, Pennsylvania, sunrise is at 7:05 am and sunset at 4:36 pm. On the last day of the month, sunrise is at 7:23 am and sunset at 4:46 pm EST.
Sunshine
The average sunshine in December is 5h.UV index
The months with the lowest UV index in Cannon Run are January through March, November and December, with an average maximum UV index of 2. A UV Index estimate of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV rays for ordinary individuals.Note: The UV index of 2 during December leads to these advisories:
Prolonged sun exposure generally does not trouble most people. However, it is vital to ensure protection for babies, children, and individuals with sensitive skin. The best time to avoid the Sun's harmful UV radiation is during midday when it's most potent. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes. Mark this! Snow reflection can nearly double the UV radiation intensity from the Sun.
Frequently asked questions
Is it cold in Cannon Run during December?
What is the average humidity in December in Cannon Run?
How much does it rain in Cannon Run in December?
When does it start snowing in Cannon Run?
What is the month with the shortest days in Cannon Run?
How many hours of daylight does Cannon Run have in December?
What time are sunrise and sunset in December in Cannon Run?
How long on average sun shines in December in Cannon Run?
What is the month with the lowest UV index in Cannon Run?
What is the UV index intensity in December in Cannon Run?
Average temperature in December
Cannon Run, PA
- Average high temperature in December: 42.6°F
The warmest month (with the highest average high temperature) is July (85.6°F).
The month with the lowest average high temperature is January (36.7°F).
- Average low temperature in December: 30.9°F
The month with the highest average low temperature is July (67.5°F).
The coldest month (with the lowest average low temperature) is January (24.3°F).
Average pressure in December
Cannon Run, PA
- Average pressure in December: 30.09"Hg
The month with the highest atmospheric pressure is November (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed in December
Cannon Run, PA
- Average wind speed in December: 7.5mph
The windiest month (with the highest average wind speed) is March (8.3mph).
The calmest months (with the lowest average wind speed) are July and August (5.3mph).
Average humidity in December
Cannon Run, PA
- Average humidity in December: 78%
The months with the highest relative humidity are February and October (79%).
The months with the lowest relative humidity are April and July (72%).
Average rainfall in December
Cannon Run, PA
- Average rainfall in December: 1.22"
The wettest month (with the highest rainfall) is July (1.89").
The driest month (with the least rainfall) is February (0.91").
Average rainfall days in December
Cannon Run, PA
- Average rainfall days in December: 8.6 days
The month with the highest number of rainy days is May (16 days).
The month with the least rainy days is November (7.4 days).
Average snowfall in December
Cannon Run, PA
- Average snowfall in December: 0.35"
The months with the highest snowfall are February and March (0.55").
The months with the least snowfall are April, June, July, August, September, October and November (0").
Average snowfall days in December
Cannon Run, PA
- Average snowfall days in December: 2.6 days
The month with the highest number of snowfall days is January (5.2 days).
The months with the least snowfall days are April, June, July, August, September and October (0 days).
Average daylight in December /
Average sunshine in December
Cannon Run, 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: 5h and 0min
The month with the most sunshine is July (Average sunshine: 10h and 42min).
The month with the least sunshine is February (Average sunshine: 4h and 48min).
Average sunshine days in December
Cannon Run, PA
- Average sunshine days in December: 19.9 days
The month with the most sunshine days is November (20.5 days).
The months with the least sunshine days are May and June (12.8 days).
Average UV index in December
Cannon Run, PA
- Average UV index in December: 2
The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover in December
Cannon Run, PA
- Average cloud cover in December: 47
The month with the most cloud cover is February (Cloud cover 48).
The month with the least cloud cover is July (Cloud cover 32).
Average visibility in December
Cannon Run, PA
- Average visibility in December: 6mi
The months with the highest visibility are January, February, March, April, June, July, August, October, November and December (6mi).
The months with the lowest visibility are May and September (5mi).
Cannon Run, Pennsylvania, USA
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