December weather forecastWeatherly, PA
December
Weather in December
December, the first month of the winter in Weatherly, is still a cold month, with an average temperature ranging between min 26.6°F (-3°C) and max 37.2°F (2.9°C).Temperature
Weatherly's December weather shows a moderate shift in high-temperatures, falling from November's frosty 46.6°F (8.1°C) to a wintry 37.2°F (2.9°C). December brings with it a nighttime average temperature of 26.6°F (-3°C) in Weatherly, Pennsylvania.Humidity
In Weatherly, the average relative humidity in December is 83%.Rainfall
In Weatherly, in December, during 11.3 rainfall days, 2.4" (61mm) of precipitation is typically accumulated. Throughout the year, there are 154.6 rainfall days, and 29.45" (748mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, October through December. In Weatherly, in December, snow falls for 7.7 days, with typically accumulated 3.62" (92mm) of snow. In Weatherly, during the entire year, snow falls for 46.2 days and aggregates up to 24.92" (633mm) of snow.Daylight
The month with the shortest days in Weatherly is December, with an average of 9h and 18min of daylight.On the first day of December in Weatherly, sunrise is at 7:09 am and sunset at 4:35 pm. On the last day of the month, sunrise is at 7:27 am and sunset at 4:45 pm EST.
Sunshine
In December, the average sunshine is 4.2h.UV index
With an average maximum UV index of 1, December is the month with the lowest UV index. A UV Index of 2, and less, symbolizes a minimal health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The maximum daily UV index of 1 in December interprets into the following recommendations:
It is important to always shield children, babies, and individuals with sensitive skin from prolonged exposure to the sun. Avoiding direct sunlight during midday hours helps reduce the risk from intense UV radiation. Stay sun-safe with clothing that is both closely woven and worn loosely. Stay alert! Snow's reflective properties can almost double the UV radiation from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Weatherly, PA
- Average high temperature in December: 37.2°F
The warmest month (with the highest average high temperature) is July (81°F).
The month with the lowest average high temperature is January (31.5°F).
- Average low temperature in December: 26.6°F
The month with the highest average low temperature is July (60.4°F).
The coldest month (with the lowest average low temperature) is January (19°F).
Average pressure in December
Weatherly, 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
Weatherly, PA
- Average wind speed in December: 7.8mph
The windiest month (with the highest average wind speed) is March (8.5mph).
The calmest month (with the lowest average wind speed) is August (5.1mph).
Average humidity in December
Weatherly, PA
- Average humidity in December: 83%
The month with the highest relative humidity is February (84%).
The months with the lowest relative humidity are April and July (78%).
Average rainfall in December
Weatherly, PA
- Average rainfall in December: 2.4"
The wettest month (with the highest rainfall) is May (2.87").
The driest month (with the least rainfall) is September (1.81").
Average rainfall days in December
Weatherly, PA
- Average rainfall days in December: 11.3 days
The month with the highest number of rainy days is May (17.7 days).
The month with the least rainy days is January (7.4 days).
Average snowfall in December
Weatherly, PA
- Average snowfall in December: 3.62"
The month with the highest snowfall is January (6.42").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Weatherly, PA
- Average snowfall days in December: 7.7 days
The month with the highest number of snowfall days is February (11.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Weatherly, PA
- Average daylight in December: 9h and 18min
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 12min
The month with the most sunshine is July (Average sunshine: 10h and 0min).
The month with the least sunshine is February (Average sunshine: 3h and 54min).
Average sunshine days in December
Weatherly, PA
- Average sunshine days in December: 15 days
The month with the most sunshine days is November (16.3 days).
The month with the least sunshine days is February (10.8 days).
Average UV index in December
Weatherly, PA
- Average UV index in December: 1
The month with the highest UV index is July (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in December
Weatherly, 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 36).
Average visibility in December
Weatherly, 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).
