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 indicates a shift in the average high-temperature, from November's chilly 45.5°F (7.5°C) to a wintry 36°F (2.2°C). Nighttime temperature dips to a mean of 25.5°F (-3.6°C) during December.Humidity
The average relative humidity in December is 86%.Rainfall
In Karthaus, in December, it is raining for 11.6 days, with typically 2.8" (71mm) of accumulated precipitation. Throughout the year, there are 165.7 rainfall days, and 31.54" (801mm) of precipitation is accumulated.Snowfall
Months with snowfall in Karthaus are January through May, October through December. In Karthaus, in December, snow falls for 15.5 days, with typically accumulated 7.36" (187mm) of snow. In Karthaus, during the entire year, snow falls for 76 days and aggregates up to 37.6" (955mm) of snow.Daylight
The month with the shortest days is December, with an average of 9h and 18min of daylight.On the first day of December, sunrise is at 7:18 am and sunset at 4:44 pm. On the last day of the month, sunrise is at 7:37 am and sunset at 4:53 pm EST.
Sunshine
In December, the average sunshine is 2.9h.UV index
With an average maximum UV index of 1, December is the month with the lowest UV index in Karthaus. A UV Index of 2, and less, symbolizes a minimal health hazard from exposure to the Sun's UV radiation for ordinary individuals.Note: In December, the maximum UV index of 1 translates into these guidelines:
Infants, children, and people with sensitive skin should always have protection against lengthy periods of sun exposure. Stay safe from the Sun's strongest UV rays by limiting exposure during midday. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration. Be attentive! The reflective property of snow can nearly double the Sun's UV radiation.
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 much does it snow in December?
What is the month with the shortest days?
How many hours of daylight does Karthaus have in December?
When is the sunrise / sunset in December in Karthaus?
How many hours of sunshine does Karthaus have in December?
When is the lowest UV index?
What is the UV index intensity in December?
Average temperature in December
Karthaus, PA
- Average high temperature in December: 36°F
The warmest month (with the highest average high temperature) is July (81°F).
The month with the lowest average high temperature is January (29.7°F).
- Average low temperature in December: 25.5°F
The month with the highest average low temperature is July (58.3°F).
The coldest month (with the lowest average low temperature) is January (18°F).
Average pressure in December
Karthaus, 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
Karthaus, PA
- Average wind speed in December: 8.5mph
The windiest month (with the highest average wind speed) is January (9.1mph).
The calmest month (with the lowest average wind speed) is August (5.4mph).
Average humidity in December
Karthaus, PA
- Average humidity in December: 86%
The month with the highest relative humidity is February (87%).
The month with the lowest relative humidity is July (77%).
Average rainfall in December
Karthaus, PA
- Average rainfall in December: 2.8"
The wettest month (with the highest rainfall) is April (3.43").
The driest month (with the least rainfall) is August (1.97").
Average rainfall days in December
Karthaus, PA
- Average rainfall days in December: 11.6 days
The month with the highest number of rainy days is May (19.7 days).
The month with the least rainy days is January (7.6 days).
Average snowfall in December
Karthaus, PA
- Average snowfall in December: 7.36"
The month with the highest snowfall is January (9.25").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Karthaus, PA
- Average snowfall days in December: 15.5 days
The month with the highest number of snowfall days is January (19.1 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Karthaus, 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 5min
The months with the most sunshine are July and August (Average sunshine: 9h and 36min).
The month with the least sunshine is January (Average sunshine: 2h and 36min).
Average sunshine days in December
Karthaus, PA
- Average sunshine days in December: 8.8 days
The month with the most sunshine days is September (14.7 days).
The month with the least sunshine days is February (7.3 days).
Average UV index in December
Karthaus, 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
Karthaus, PA
- Average cloud cover in December: 71
The month with the most cloud cover is January (Cloud cover 74).
The months with the least cloud cover are July and August (Cloud cover 40).
Average visibility in December
Karthaus, 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).
Karthaus, Pennsylvania, USA
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