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
Setting in of December comes with a decrease in the average high-temperature, moving from a frosty 47.3°F (8.5°C) in November to a wintry 37.6°F (3.1°C). An average minimum temperature of 27.3°F (-2.6°C) marks the month of December.Humidity
In December, the average relative humidity is 83%.Rainfall
In December, the rain falls for 12.6 days. Throughout December, 2.01" (51mm) of precipitation is accumulated. In Pennsylvania Furnace, during the entire year, the rain falls for 166.2 days and collects up to 23.86" (606mm) of precipitation.Snowfall
Months with snowfall are January through May, October through December. In Pennsylvania Furnace, during December, snow falls for 9.1 days and regularly aggregates up to 2.64" (67mm) of snow. In Pennsylvania Furnace, during the entire year, snow falls for 50 days and aggregates up to 16.77" (426mm) 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 7:17 am and sunset at 4:45 pm. On the last day of the month, sunrise is at 7:35 am and sunset at 4:54 pm EST.
Sunshine
In Pennsylvania Furnace, the average sunshine in December is 3.9h.UV index
December is the month with the lowest UV index, with an average maximum UV index of 1. A UV Index of 2, and less, symbolizes a low health risk from unsafe exposure to UV radiation for ordinary individuals.Note: An average maximum UV index of 1 in December leads to these recommendations:
Children, babies, and those with sensitive skin should always be shielded from long periods of sun exposure. Minimize direct exposure to the Sun during midday when its radiation is at its peak. Combat UV radiation's detrimental effects with sun-safe clothing and UV-blocking eyewear. Be aware! The intensity of the Sun's UV radiation can be amplified nearly twice due to snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is it in December?
What is the average humidity in December?
How much does it rain in December?
How many days does it snow in December?
What is the month with the shortest days?
What is the average length of the day in December?
When are sunrise and sunset in December?
How many hours of sunshine does Pennsylvania Furnace have in December?
What is the month with the lowest UV index?
What is the UV index reading in December?
Average temperature in December
Pennsylvania Furnace, PA
- Average high temperature in December: 37.6°F
The warmest month (with the highest average high temperature) is July (82.2°F).
The month with the lowest average high temperature is January (31.6°F).
- Average low temperature in December: 27.3°F
The month with the highest average low temperature is July (59.4°F).
The coldest month (with the lowest average low temperature) is January (19.8°F).
Average pressure in December
Pennsylvania Furnace, PA
- Average pressure in December: 30.1"Hg
The month with the highest atmospheric pressure is November (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).
Average wind speed in December
Pennsylvania Furnace, PA
- Average wind speed in December: 7.8mph
The windiest month (with the highest average wind speed) is January (8.4mph).
The calmest month (with the lowest average wind speed) is August (4.7mph).
Average humidity in December
Pennsylvania Furnace, PA
- Average humidity in December: 83%
The month with the highest relative humidity is February (84%).
The month with the lowest relative humidity is July (76%).
Average rainfall in December
Pennsylvania Furnace, PA
- Average rainfall in December: 2.01"
The wettest month (with the highest rainfall) is May (2.72").
The driest month (with the least rainfall) is November (1.5").
Average rainfall days in December
Pennsylvania Furnace, PA
- Average rainfall days in December: 12.6 days
The month with the highest number of rainy days is May (17.8 days).
The month with the least rainy days is February (10.3 days).
Average snowfall in December
Pennsylvania Furnace, PA
- Average snowfall in December: 2.64"
The month with the highest snowfall is January (4.49").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Pennsylvania Furnace, PA
- Average snowfall days in December: 9.1 days
The month with the highest number of snowfall days is January (15 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Pennsylvania 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 18min).
- Average sunshine in December: 3h and 5min
The month with the most sunshine is July (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 3h and 48min).
Average sunshine days in December
Pennsylvania Furnace, PA
- Average sunshine days in December: 13.3 days
The month with the most sunshine days is November (15.6 days).
The month with the least sunshine days is February (9.5 days).
Average UV index in December
Pennsylvania Furnace, PA
- Average UV index in December: 1
The month with the highest UV index is June (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in December
Pennsylvania Furnace, PA
- Average cloud cover in December: 59
The month with the most cloud cover is January (Cloud cover 62).
The months with the least cloud cover are July and August (Cloud cover 35).
Average visibility in December
Pennsylvania Furnace, 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).
Pennsylvania Furnace, Pennsylvania, USA
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