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
A change in temperatures is noted as November gives way to December, with average highs reducing from a frosty 46.2°F (7.9°C) to an icy 36.9°F (2.7°C). December's nights observe an average temperature of 25.9°F (-3.4°C).Humidity
The average relative humidity in December in Stairville is 83%.Rainfall
In Stairville, in December, during 10.3 rainfall days, 2.2" (56mm) of precipitation is typically accumulated. In Stairville, Pennsylvania, during the entire year, the rain falls for 162.5 days and collects up to 30.35" (771mm) of precipitation.Snowfall
Months with snowfall are January through May, October through December. In Stairville, in December, during 7.8 snowfall days, 3.5" (89mm) of snow is typically accumulated. Throughout the year, there are 41.1 snowfall days, and 21.38" (543mm) of snow is accumulated.Daylight
December has the shortest days of the year in Stairville, with an average of 9h and 18min of daylight.On the first day of December, sunrise is at 7:10 am and sunset at 4:36 pm. On the last day of the month, sunrise is at 7:29 am and sunset at 4:45 pm EST.
Sunshine
In Stairville, Pennsylvania, the average sunshine in December is 3.8h.UV index
With an average maximum UV index of 1, December is the month with the lowest UV index in Stairville. A UV Index of 2, and less, symbolizes a minimal health hazard from exposure to the Sun's UV radiation for the ordinary person.Note: The UV index of 1 during December translates into the following guidance:
While sun exposure does not greatly affect most, individuals with fair skin, babies, and children always need vigilant safeguarding. The mid-day Sun emits the most powerful UV radiation, so seek shade and minimize exposure. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes. Note this! The Sun's UV radiation can nearly be doubled by the reflection off snow.
Frequently asked questions
How cold is it in Stairville in December?
What is the average humidity in December in Stairville?
How many days does it rain in December in Stairville?
How many days does it snow in December in Stairville?
What is the month with the shortest days in Stairville?
What is the average length of the day in December in Stairville?
When are sunrise and sunset in December in Stairville?
How long on average sun shines in December in Stairville?
What is the month with the lowest UV index in Stairville?
What is the UV index reading in December in Stairville?
Average temperature in December
Stairville, PA
- Average high temperature in December: 36.9°F
The warmest month (with the highest average high temperature) is July (81°F).
The month with the lowest average high temperature is January (30.6°F).
- Average low temperature in December: 25.9°F
The month with the highest average low temperature is July (59°F).
The coldest month (with the lowest average low temperature) is January (18.5°F).
Average pressure in December
Stairville, 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
Stairville, PA
- Average wind speed in December: 7.6mph
The windiest months (with the highest average wind speed) are March and April (8.1mph).
The calmest month (with the lowest average wind speed) is August (5.1mph).
Average humidity in December
Stairville, PA
- Average humidity in December: 83%
The month with the highest relative humidity is February (84%).
The months with the lowest relative humidity are April and July (78%).
Average rainfall in December
Stairville, PA
- Average rainfall in December: 2.2"
The wettest month (with the highest rainfall) is July (3.23").
The driest months (with the least rainfall) are January and September (2.09").
Average rainfall days in December
Stairville, PA
- Average rainfall days in December: 10.3 days
The month with the highest number of rainy days is May (19.1 days).
The month with the least rainy days is February (8.2 days).
Average snowfall in December
Stairville, PA
- Average snowfall in December: 3.5"
The month with the highest snowfall is February (6.42").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Stairville, PA
- Average snowfall days in December: 7.8 days
The month with the highest number of snowfall days is January (11.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Stairville, 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: 3h and 5min
The month with the most sunshine is July (Average sunshine: 10h and 6min).
The months with the least sunshine are January and February (Average sunshine: 3h and 42min).
Average sunshine days in December
Stairville, PA
- Average sunshine days in December: 15.4 days
The month with the most sunshine days is November (17.5 days).
The month with the least sunshine days is July (9.1 days).
Average UV index in December
Stairville, 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
Stairville, PA
- Average cloud cover in December: 60
The month with the most cloud cover is February (Cloud cover 61).
The month with the least cloud cover is July (Cloud cover 37).
Average visibility in December
Stairville, PA
- Average visibility in December: 5mi
The month with the highest visibility is April (6mi).
The months with the lowest visibility are January, February, March, May, June, July, August, September, October, November and December (5mi).
Stairville, Pennsylvania, USA
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