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 decrease in the average high-temperature, falling from November's chilly 46.2°F (7.9°C) to a wintry 36.9°F (2.7°C). In Stairville, the average low-temperature during the month of December is a subzero cold 25.9°F (-3.4°C).Humidity
In Stairville, the average relative humidity in December is 83%.Rainfall
In Stairville, in December, it is raining for 10.3 days, with typically 2.2" (56mm) of accumulated precipitation. In Stairville, during the entire year, the rain falls for 162.5 days and collects up to 30.35" (771mm) of precipitation.Snowfall
Months with snowfall in Stairville are January through May, October through December. In Stairville, in December, during 7.8 snowfall days, 3.5" (89mm) of snow is typically accumulated. In Stairville, Pennsylvania, during the entire year, snow falls for 41.1 days and aggregates up to 21.38" (543mm) of snow.Daylight
December has the shortest days of the year, 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
The average sunshine in December is 3.8h.UV index
The month with the lowest UV index is December, with an average maximum UV index of 1. A UV Index reading of 2, and below, represents a low health risk from exposure to the Sun's UV rays for the ordinary person.Note: In December, a daily maximum UV index of 1 leads to the following instructions:
Despite the majority tolerating prolonged sun exposure, those with sensitive skin, infants, and children demand continual protection. Avoiding the Sun's peak radiation during midday hours is essential for health and safety. Boost your sun resistance with garments that are densely woven yet spacious. Take to heart! Snow reflection can almost magnify the Sun's UV radiation twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is it in Stairville in December?
What is the average humidity in December?
How much does it rain in December?
How much does it snow in December?
What is the month with the shortest days?
How many hours of daylight does Stairville have in December?
What time are sunrise and sunset in December in Stairville?
How many hours of sunshine does Stairville have in December?
What is the month with the lowest UV index?
How high is the UV index in December?
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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