December weather forecastPotterstown, NJ
December
Weather in December
December, the first month of the winter in Potterstown, is also an icy month, with an average temperature varying between 29.7°F (-1.3°C) and 41.2°F (5.1°C).Temperature
The shift from November to December involves a decrease in the average high-temperature, dropping from a fresh 50.4°F (10.2°C) to a cold 41.2°F (5.1°C). An average low-temperature of 29.7°F (-1.3°C) is recorded in the month of December in Potterstown.Humidity
The months with the highest humidity in Potterstown are February, October and December, with an average relative humidity of 80%.Rainfall
In Potterstown, in December, it is raining for 11.4 days, with typically 2.91" (74mm) of accumulated precipitation. In Potterstown, during the entire year, the rain falls for 160.3 days and collects up to 29.06" (738mm) of precipitation.Snowfall
January through May, October through December are months with snowfall in Potterstown. In Potterstown, during December, snow falls for 4.2 days and regularly aggregates up to 1.89" (48mm) of snow. In Potterstown, during the entire year, snow falls for 27 days and aggregates up to 12.2" (310mm) of snow.Daylight
December has the shortest days of the year in Potterstown, with an average of 9h and 18min of daylight.On the first day of the month, sunrise is at 7:04 am and sunset at 4:32 pm. On the last day of December, sunrise is at 7:22 am and sunset at 4:42 pm EST.
Sunshine
The average sunshine in December in Potterstown is 4.8h.UV index
January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index value of 2, and less, symbolizes a low threat to health from unsafe exposure to UV radiation for ordinary individuals.Note: A maximum high daily UV index of 2 during December translates into the following directions:
Extended sunlight exposure does not pose significant problems for most people, except for children, infants, and people with fair skin who always need shielding. Considering the Sun's intensity during midday, it's wise to minimize direct exposure. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses. Forewarned is forearmed! The Sun's UV radiation can be almost doubled in intensity by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Potterstown, NJ
- Average high temperature in December: 41.2°F
The warmest month (with the highest average high temperature) is July (83.8°F).
The month with the lowest average high temperature is January (35.2°F).
- Average low temperature in December: 29.7°F
The month with the highest average low temperature is July (64.6°F).
The coldest month (with the lowest average low temperature) is January (22.5°F).
Average pressure in December
Potterstown, NJ
- Average pressure in December: 30.09"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
Potterstown, NJ
- Average wind speed in December: 7.6mph
The windiest month (with the highest average wind speed) is March (8.4mph).
The calmest month (with the lowest average wind speed) is August (5mph).
Average humidity in December
Potterstown, NJ
- Average humidity in December: 80%
The months with the highest relative humidity are February, October and December (80%).
The month with the lowest relative humidity is April (75%).
Average rainfall in December
Potterstown, NJ
- Average rainfall in December: 2.91"
The wettest month (with the highest rainfall) is July (2.95").
The driest month (with the least rainfall) is September (1.54").
Average rainfall days in December
Potterstown, NJ
- Average rainfall days in December: 11.4 days
The month with the highest number of rainy days is July (17.3 days).
The month with the least rainy days is January (9 days).
Average snowfall in December
Potterstown, NJ
- Average snowfall in December: 1.89"
The month with the highest snowfall is March (3.78").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Potterstown, NJ
- Average snowfall days in December: 4.2 days
The month with the highest number of snowfall days is January (8.1 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Potterstown, NJ
- Average daylight in December: 9h and 18min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in December: 4h and 48min
The month with the most sunshine is July (Average sunshine: 10h and 24min).
The month with the least sunshine is February (Average sunshine: 4h and 36min).
Average sunshine days in December
Potterstown, NJ
- Average sunshine days in December: 16.3 days
The month with the most sunshine days is November (17.9 days).
The month with the least sunshine days is June (11.7 days).
Average UV index in December
Potterstown, NJ
- Average UV index in December: 2
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover in December
Potterstown, NJ
- Average cloud cover in December: 49
The months with the most cloud cover are February and December (Cloud cover 49).
The months with the least cloud cover are July and August (Cloud cover 34).
Average visibility in December
Potterstown, NJ
- Average visibility in December: 6mi
The months with the highest visibility are January, February, March, April, June, July, November and December (6mi).
The months with the lowest visibility are May, August, September and October (5mi).
