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
Bethany's progression into December involves a drop in the average high-temperature, receding from a chilly 45.9°F (7.7°C) in November to a wintry 36°F (2.2°C). An average low-temperature of 25°F (-3.9°C) marks the month of December.Humidity
With an average relative humidity of 85%, December is the most humid month in Bethany, Pennsylvania.Rainfall
In Bethany, Pennsylvania, in December, during 8.5 rainfall days, 1.46" (37mm) of precipitation is typically accumulated. In Bethany, Pennsylvania, during the entire year, the rain falls for 132.5 days and collects up to 19.21" (488mm) of precipitation.Snowfall
January through May, October through December are months with snowfall. The months with the most snowfall are January and December, with an average 3.27" (83mm) of accumulated snow.Daylight
With an average of 9h and 12min of daylight, December has the shortest days of the year in Bethany, Pennsylvania.On the first day of the month, sunrise is at 7:09 am and sunset at 4:31 pm. On the last day of December, sunrise is at 7:27 am and sunset at 4:41 pm EST.
Sunshine
In December, the average sunshine in Bethany, Pennsylvania, is 3.8h.UV index
December is the month with the lowest UV index in Bethany, with an average maximum UV index of 1. A UV Index value of 2, and less, symbolizes a low health risk from unprotected exposure to Sun's UV rays for average individuals.Note: In December, the maximum UV index of 1 translates into these guidelines:
Most people face no serious problems with extended sun exposure, but those with fair skin, infants, and children always need protection. During midday, the Sun's radiation is strongest, and it's advisable to reduce direct exposure. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation. Keep in mind! Snow's reflective quality can nearly double the intensity of the Sun's UV radiation.
Frequently asked questions
How cold is it in Bethany in December?
What is the most humid month in Bethany?
What is the average humidity in December in Bethany?
How many days does it rain in December in Bethany?
When does it snow the most in Bethany?
How much does it snow in Bethany in December?
What is the month with the shortest days in Bethany?
How many hours of daylight does Bethany have in December?
When are sunrise and sunset in December in Bethany?
How long on average sun shines in December in Bethany?
When is the lowest UV index in Bethany?
What is the UV index intensity in December in Bethany?
Average temperature in December
Bethany, PA
- Average high temperature in December: 36°F
The warmest month (with the highest average high temperature) is July (81.1°F).
The month with the lowest average high temperature is January (30.4°F).
- Average low temperature in December: 25°F
The month with the highest average low temperature is July (58.6°F).
The coldest month (with the lowest average low temperature) is January (18°F).
Average pressure in December
Bethany, PA
- Average pressure in December: 30.08"Hg
The month with the highest atmospheric pressure is November (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in December
Bethany, PA
- Average wind speed in December: 7.9mph
The windiest month (with the highest average wind speed) is February (8.4mph).
The calmest month (with the lowest average wind speed) is August (5.3mph).
Average humidity in December
Bethany, PA
- Average humidity in December: 85%
The month with the highest relative humidity is December (85%).
The month with the lowest relative humidity is July (77%).
Average rainfall in December
Bethany, PA
- Average rainfall in December: 1.46"
The wettest months (with the highest rainfall) are July and August (2.09").
The driest months (with the least rainfall) are January and September (1.14").
Average rainfall days in December
Bethany, PA
- Average rainfall days in December: 8.5 days
The month with the highest number of rainy days is May (15.6 days).
The months with the least rainy days are January and February (6.9 days).
Average snowfall in December
Bethany, PA
- Average snowfall in December: 3.27"
The months with the highest snowfall are January and December (3.27").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Bethany, PA
- Average snowfall days in December: 8.2 days
The month with the highest number of snowfall days is February (10.6 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Bethany, PA
- Average daylight in December: 9h and 1min
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 12min).
- Average sunshine in December: 3h and 5min
The month with the most sunshine is July (Average sunshine: 10h and 6min).
The month with the least sunshine is February (Average sunshine: 3h and 36min).
Average sunshine days in December
Bethany, PA
- Average sunshine days in December: 15.2 days
The month with the most sunshine days is September (18.6 days).
The month with the least sunshine days is February (12.5 days).
Average UV index in December
Bethany, 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
Bethany, PA
- Average cloud cover in December: 62
The months with the most cloud cover are February and December (Cloud cover 62).
The month with the least cloud cover is July (Cloud cover 38).
Average visibility in December
Bethany, PA
- Average visibility in December: 5mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (5mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (5mi).
Bethany, Pennsylvania, USA
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