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's arrival corresponds with a decrease in average high-temperatures, from November's frosty 48.2°F (9°C) to a cold 38.3°F (3.5°C). An average nighttime temperature of 27.5°F (-2.5°C) is recorded during December.Humidity
In December, the average relative humidity is 81%.Rainfall
In Catawissa, Pennsylvania, in December, it is raining for 11.5 days, with typically 2.44" (62mm) of accumulated precipitation. Throughout the year, there are 155.9 rainfall days, and 30.04" (763mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, October through December. In Catawissa, in December, snow falls for 8.4 days, with typically accumulated 3.31" (84mm) of snow. In Catawissa, during the entire year, snow falls for 42.7 days and aggregates up to 20.67" (525mm) of snow.Daylight
With an average of 9h and 18min of daylight, December has the shortest days of the year.On the first day of the month, sunrise is at 7:11 am and sunset at 4:38 pm. On the last day of December, sunrise is at 7:30 am and sunset at 4:47 pm EST.
Sunshine
In December, the average sunshine is 4.1h.UV index
The months with the lowest UV index 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 exposure to the Sun's UV radiation for the ordinary person.Note: The maximum daily UV index of 2 during December translates into the following directions:
Despite most people tolerating extended sun exposure, it is critical to always protect those with sensitive skin, infants, and children. Being exposed to the midday Sun can have harmful effects due to strong UV radiation; always take precautions. Employ a hat with a wide brim for robust protection, cutting UV exposure by half. Consider this! The reflection from snow can almost double the intensity of the Sun's UV radiation.
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Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is 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?
What is the average length of the day in December?
When are sunrise and sunset in December in Catawissa?
How many hours of sunshine does Catawissa have in December?
What are the months with the lowest UV index?
How high is the UV index in December in Catawissa?
Average temperature in December
Catawissa, PA
- Average high temperature in December: 38.3°F
The warmest month (with the highest average high temperature) is July (81.9°F).
The month with the lowest average high temperature is January (32°F).
- Average low temperature in December: 27.5°F
The month with the highest average low temperature is July (60.1°F).
The coldest month (with the lowest average low temperature) is January (19.6°F).
Average pressure in December
Catawissa, PA
- Average pressure in December: 30.09"Hg
The month with the highest atmospheric pressure is November (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed in December
Catawissa, PA
- Average wind speed in December: 7.4mph
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 (4.8mph).
Average humidity in December
Catawissa, PA
- Average humidity in December: 81%
The month with the highest relative humidity is February (83%).
The months with the lowest relative humidity are March and April (77%).
Average rainfall in December
Catawissa, PA
- Average rainfall in December: 2.44"
The wettest month (with the highest rainfall) is April (3.03").
The driest month (with the least rainfall) is September (1.97").
Average rainfall days in December
Catawissa, PA
- Average rainfall days in December: 11.5 days
The month with the highest number of rainy days is May (16.9 days).
The month with the least rainy days is January (7.6 days).
Average snowfall in December
Catawissa, PA
- Average snowfall in December: 3.31"
The month with the highest snowfall is February (5.55").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Catawissa, PA
- Average snowfall days in December: 8.4 days
The month with the highest number of snowfall days is January (11.6 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Catawissa, 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: 4h and 1min
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 54min).
Average sunshine days in December
Catawissa, PA
- Average sunshine days in December: 14 days
The month with the most sunshine days is November (16.7 days).
The month with the least sunshine days is February (10.7 days).
Average UV index in December
Catawissa, PA
- Average UV index in December: 2
The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover in December
Catawissa, PA
- Average cloud cover in December: 57
The month with the most cloud cover is February (Cloud cover 58).
The month with the least cloud cover is July (Cloud cover 34).
Average visibility in December
Catawissa, 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).
Catawissa, Pennsylvania, USA
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