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 indicates a decrease in the average high-temperature, moving from a chilly 49.5°F (9.7°C) in November to a cold 40.1°F (4.5°C). Alliance Furnace records an average nighttime low of 28.6°F (-1.9°C) in December.Humidity
In December, the average relative humidity is 83%.Rainfall
In Alliance Furnace, in December, it is raining for 8.4 days, with typically 1.06" (27mm) of accumulated precipitation. Throughout the year, there are 139.7 rainfall days, and 12.95" (329mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, October through December. In Alliance Furnace, in December, during 10.8 snowfall days, 2.28" (58mm) of snow is typically accumulated. In Alliance Furnace, during the entire year, snow falls for 53.8 days and aggregates up to 10.79" (274mm) of snow.Daylight
December has the shortest days of the year in Alliance Furnace, Pennsylvania, with an average of 9h and 24min of daylight.On the first day of December, sunrise is at 7:22 am and sunset at 4:53 pm. On the last day of the month, sunrise is at 7:40 am and sunset at 5:03 pm EST.
Sunshine
The average sunshine in December in Alliance Furnace, Pennsylvania, is 3.6h.UV index
The months with the lowest UV index in Alliance Furnace, Pennsylvania, 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 low health risk from unprotected exposure to Sun's UV rays for ordinary individuals.Note: In December, the maximum UV index of 2 translates into these guidelines:
In contrast to children, who must always be shielded from the sun, most people can tolerate up to an hour of sun exposure without any burns. Limiting sun exposure during midday hours helps in reducing the harmful effects of UV radiation. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days. Take careful note! The UV radiation of the Sun can be nearly doubled by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Is it cold in Alliance Furnace during December?
What is the average humidity in December in Alliance Furnace?
How much does it rain in Alliance Furnace in December?
How many days does it snow in December in Alliance Furnace?
What is the month with the shortest days in Alliance Furnace?
What is the average length of the day in December in Alliance Furnace?
When are sunrise and sunset in December in Alliance Furnace?
How many hours of sunshine does Alliance Furnace have in December?
What is the month with the lowest UV index in Alliance Furnace?
What is the UV index reading in December in Alliance Furnace?
Average temperature in December
Alliance Furnace, PA
- Average high temperature in December: 40.1°F
The warmest month (with the highest average high temperature) is July (82.6°F).
The month with the lowest average high temperature is January (34.2°F).
- Average low temperature in December: 28.6°F
The month with the highest average low temperature is July (60.8°F).
The coldest month (with the lowest average low temperature) is January (21.2°F).
Average pressure in December
Alliance Furnace, PA
- Average pressure in December: 30.11"Hg
The month with the highest atmospheric pressure is November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).
Average wind speed in December
Alliance Furnace, PA
- Average wind speed in December: 7.4mph
The windiest month (with the highest average wind speed) is January (8mph).
The calmest month (with the lowest average wind speed) is August (4.7mph).
Average humidity in December
Alliance Furnace, PA
- Average humidity in December: 83%
The month with the highest relative humidity is February (85%).
The months with the lowest relative humidity are April, July and August (77%).
Average rainfall in December
Alliance Furnace, PA
- Average rainfall in December: 1.06"
The wettest month (with the highest rainfall) is May (1.57").
The driest month (with the least rainfall) is September (0.67").
Average rainfall days in December
Alliance Furnace, PA
- Average rainfall days in December: 8.4 days
The month with the highest number of rainy days is May (16.8 days).
The month with the least rainy days is February (7.7 days).
Average snowfall in December
Alliance Furnace, PA
- Average snowfall in December: 2.28"
The month with the highest snowfall is January (2.64").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Alliance Furnace, PA
- Average snowfall days in December: 10.8 days
The month with the highest number of snowfall days is January (15.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Alliance Furnace, 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 4min
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
Alliance Furnace, PA
- Average sunshine days in December: 13.5 days
The month with the most sunshine days is November (17.9 days).
The month with the least sunshine days is January (9.7 days).
Average UV index in December
Alliance Furnace, PA
- Average UV index in December: 2
The month with the highest UV index is July (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
Alliance Furnace, PA
- Average cloud cover in December: 64
The month with the most cloud cover is January (Cloud cover 69).
The month with the least cloud cover is August (Cloud cover 35).
Average visibility in December
Alliance Furnace, PA
- Average visibility in December: 5mi
The months with the highest visibility are April and November (6mi).
The months with the lowest visibility are January, February, March, May, June, July, August, September, October and December (5mi).
Alliance Furnace, Pennsylvania, USA
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