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
The onset of December introduces a moderate change in Upsonville's weather, with average high-temperatures falling from November's chilly 44.2°F (6.8°C) to a cold 34.3°F (1.3°C). Upsonville's nights in December cool down to an average low-temperature of 24.6°F (-4.1°C).Humidity
In Upsonville, the average relative humidity in December is 85%.Rainfall
In Upsonville, in December, during 10.9 rainfall days, 2.36" (60mm) of precipitation is typically accumulated. Throughout the year, in Upsonville, Pennsylvania, there are 163.7 rainfall days, and 32.05" (814mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, October through December. In Upsonville, during December, snow falls for 15.5 days and regularly aggregates up to 7.52" (191mm) of snow. Throughout the year, there are 80.1 snowfall days, and 41.93" (1065mm) of snow is accumulated.Daylight
December has the shortest days of the year in Upsonville, with an average of 9h and 12min of daylight.On the first day of the month, sunrise is at 7:12 am and sunset at 4:32 pm. On the last day of December, sunrise is at 7:30 am and sunset at 4:42 pm EST.
Sunshine
In Upsonville, the average sunshine in December is 3.2h.UV index
January and December, with an average maximum UV index of 1, are months with the lowest UV index. A UV Index estimate of 2, and below, represents a low health risk from exposure to the Sun's UV rays for ordinary individuals.Note: An average maximum UV index of 1 in December leads to these recommendations:
Prolonged exposure to sunlight rarely troubles the majority, but constant protection is vital for babies, children, and fair-skinned people. Midday is the peak time for the Sun's radiation; stay in the shade and protect yourself. Tightly woven clothing, when worn loosely, shields effectively against the Sun. Remember! The Sun's UV radiation can be magnified almost twofold by the reflection of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is December in Upsonville?
What is the average humidity in December in Upsonville?
How much does it rain in Upsonville in December?
How much does it snow in Upsonville in December?
What is the month with the shortest days in Upsonville?
How many hours of daylight does Upsonville have in December?
When is the sunrise / sunset in December in Upsonville?
How many hours of sunshine does Upsonville have in December?
What are the months with the lowest UV index in Upsonville?
How high is the UV index in December in Upsonville?
Average temperature in December
Upsonville, PA
- Average high temperature in December: 34.3°F
The warmest month (with the highest average high temperature) is July (79.9°F).
The month with the lowest average high temperature is January (28.6°F).
- Average low temperature in December: 24.6°F
The month with the highest average low temperature is July (57.9°F).
The coldest month (with the lowest average low temperature) is January (17.1°F).
Average pressure in December
Upsonville, 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 (29.94"Hg).
Average wind speed in December
Upsonville, PA
- Average wind speed in December: 8.1mph
The windiest months (with the highest average wind speed) are January and February (8.5mph).
The calmest month (with the lowest average wind speed) is August (5.3mph).
Average humidity in December
Upsonville, PA
- Average humidity in December: 85%
The month with the highest relative humidity is February (86%).
The month with the lowest relative humidity is July (78%).
Average rainfall in December
Upsonville, PA
- Average rainfall in December: 2.36"
The wettest month (with the highest rainfall) is August (3.27").
The driest month (with the least rainfall) is January (2.2").
Average rainfall days in December
Upsonville, PA
- Average rainfall days in December: 10.9 days
The month with the highest number of rainy days is May (19.7 days).
The month with the least rainy days is February (7.5 days).
Average snowfall in December
Upsonville, PA
- Average snowfall in December: 7.52"
The month with the highest snowfall is February (10.2").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Upsonville, PA
- Average snowfall days in December: 15.5 days
The months with the highest number of snowfall days are January and February (17.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Upsonville, PA
- Average daylight in December: 9h and 1min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in December: 3h and 1min
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 6min).
Average sunshine days in December
Upsonville, PA
- Average sunshine days in December: 9.4 days
The month with the most sunshine days is September (14 days).
The month with the least sunshine days is February (7.8 days).
Average UV index in December
Upsonville, PA
- Average UV index in December: 1
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 and December (UV index 1).
Average cloud cover in December
Upsonville, PA
- Average cloud cover in December: 68
The month with the most cloud cover is February (Cloud cover 69).
The month with the least cloud cover is July (Cloud cover 38).
Average visibility in December
Upsonville, PA
- Average visibility in December: 5mi
The months with the highest visibility are January, March, April, May, June, July, August, September, October, November and December (5mi).
The month with the lowest visibility is February (4mi).
Upsonville, Pennsylvania, USA
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