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
As November shifts into December, a slight alteration in temperatures is observed, with average highs reducing from a frosty 45.9°F (7.7°C) to an icy 36.5°F (2.5°C). Throughout December, the temperature falls to an average low of 25.7°F (-3.5°C).Humidity
In New Bethlehem, Pennsylvania, the average relative humidity in December is 86%.Rainfall
In New Bethlehem, Pennsylvania, in December, during 12.5 rainfall days, 1.97" (50mm) of precipitation is typically accumulated. In New Bethlehem, Pennsylvania, during the entire year, the rain falls for 169.8 days and collects up to 27.36" (695mm) of precipitation.Snowfall
Months with snowfall are January through May, October through December. In New Bethlehem, in December, snow falls for 16.9 days, with typically accumulated 5" (127mm) of snow. In New Bethlehem, during the entire year, snow falls for 80.5 days and aggregates up to 26.02" (661mm) 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 7:23 am and sunset at 4:49 pm. On the last day of the month, sunrise is at 7:42 am and sunset at 4:59 pm EST.
Sunshine
The average sunshine in December is 2.7h.UV index
With an average maximum UV index of 1, December is the month with the lowest UV index. A UV Index reading of 2, and below, represents a minimal health hazard from exposure to the Sun's UV radiation for ordinary individuals.Note: The maximum UV index, 1 during December, leads to the following recommendations:
Babies, children, and individuals with sensitive skin should always have protection against extended sun exposure. Avoiding the Sun's peak radiation during midday hours is essential for health and safety. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation. Be advised! The UV radiation from the Sun can be almost doubled due to the reflective properties of snow.
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 many days does it rain in December?
How many days does it snow in December?
What is the month with the shortest days?
How many hours of daylight does New Bethlehem have in December?
When are sunrise and sunset in December?
How long on average sun shines in December?
What is the month with the lowest UV index?
What is the UV index intensity in December?
Average temperature in December
New Bethlehem, PA
- Average high temperature in December: 36.5°F
The warmest month (with the highest average high temperature) is July (81°F).
The month with the lowest average high temperature is January (30.2°F).
- Average low temperature in December: 25.7°F
The month with the highest average low temperature is July (59°F).
The coldest month (with the lowest average low temperature) is January (17.8°F).
Average pressure in December
New Bethlehem, 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
New Bethlehem, PA
- Average wind speed in December: 7.8mph
The windiest month (with the highest average wind speed) is January (8.3mph).
The calmest month (with the lowest average wind speed) is August (5.2mph).
Average humidity in December
New Bethlehem, PA
- Average humidity in December: 86%
The months with the highest relative humidity are January and February (88%).
The month with the lowest relative humidity is July (78%).
Average rainfall in December
New Bethlehem, PA
- Average rainfall in December: 1.97"
The wettest month (with the highest rainfall) is April (3.15").
The driest month (with the least rainfall) is August (1.69").
Average rainfall days in December
New Bethlehem, PA
- Average rainfall days in December: 12.5 days
The month with the highest number of rainy days is May (19 days).
The month with the least rainy days is January (7.5 days).
Average snowfall in December
New Bethlehem, PA
- Average snowfall in December: 5"
The month with the highest snowfall is January (7.09").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
New Bethlehem, PA
- Average snowfall days in December: 16.9 days
The month with the highest number of snowfall days is January (21.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
New Bethlehem, 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: 2h and 4min
The month with the most sunshine is August (Average sunshine: 9h and 54min).
The month with the least sunshine is January (Average sunshine: 2h and 24min).
Average sunshine days in December
New Bethlehem, PA
- Average sunshine days in December: 6.6 days
The month with the most sunshine days is September (14 days).
The month with the least sunshine days is February (5.7 days).
Average UV index in December
New Bethlehem, 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
New Bethlehem, PA
- Average cloud cover in December: 72
The month with the most cloud cover is January (Cloud cover 75).
The months with the least cloud cover are July and August (Cloud cover 38).
Average visibility in December
New Bethlehem, PA
- Average visibility in December: 4mi
The months with the highest visibility are March, April, May, June, July, August, September, October and November (5mi).
The months with the lowest visibility are January, February and December (4mi).
New Bethlehem, Pennsylvania, USA
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