December weather forecastPleasant Unity, PA
December
Weather in December
The first month of the winter, December, is also a wintry month in Pleasant Unity, Pennsylvania, with an average temperature ranging between min 27.5°F (-2.5°C) and max 38.8°F (3.8°C).Temperature
Pleasant Unity experiences a temperature shift at the start of December, with average high-temperatures adjusting from a chilly 48°F (8.9°C) in November to an icy 38.8°F (3.8°C). Pleasant Unity experiences a mean temperature of 27.5°F (-2.5°C) during December nights.Humidity
In Pleasant Unity, the average relative humidity in December is 84%.Rainfall
In Pleasant Unity, in December, during 11.5 rainfall days, 2.2" (56mm) of precipitation is typically accumulated. Throughout the year, there are 173.8 rainfall days, and 25.55" (649mm) of precipitation is accumulated.Snowfall
January through April, October through December are months with snowfall. In December, it is snowing for 11.8 days. Throughout December, 4.17" (106mm) of snow is accumulated. Throughout the year, in Pleasant Unity, there are 58.9 snowfall days, and 18.62" (473mm) of snow is accumulated.Daylight
December has the shortest days of the year, with an average of 9h and 24min of daylight.On the first day of the month, sunrise is at 7:21 am and sunset at 4:52 pm. On the last day of December, sunrise is at 7:40 am and sunset at 5:02 pm EST.
Sunshine
In Pleasant Unity, the average sunshine in December is 3.5h.UV index
December is the month with the lowest UV index, with an average maximum UV index of 1. A UV Index of 2, and less, symbolizes a minimal health hazard from unsafe exposure to UV radiation for ordinary individuals.Note: In December, a daily maximum UV index of 1 leads to the following instructions:
Prolonged sun exposure should always be prevented in babies, children, and those with sensitive skin. During midday, the Sun's radiation is strongest, and it's advisable to reduce direct exposure. During bright days, sunglasses that offer UVA and UVB defense are recommended. 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
Average temperature in December
Pleasant Unity, PA
- Average high temperature in December: 38.8°F
The warmest month (with the highest average high temperature) is July (81.7°F).
The month with the lowest average high temperature is January (32.5°F).
- Average low temperature in December: 27.5°F
The month with the highest average low temperature is July (60.3°F).
The coldest month (with the lowest average low temperature) is January (20.1°F).
Average pressure in December
Pleasant Unity, PA
- Average pressure in December: 30.11"Hg
The month with the highest atmospheric pressure is November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).
Average wind speed in December
Pleasant Unity, PA
- Average wind speed in December: 8.2mph
The windiest month (with the highest average wind speed) is January (8.8mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).
Average humidity in December
Pleasant Unity, PA
- Average humidity in December: 84%
The month with the highest relative humidity is February (86%).
The months with the lowest relative humidity are April, June, July and August (78%).
Average rainfall in December
Pleasant Unity, PA
- Average rainfall in December: 2.2"
The wettest month (with the highest rainfall) is May (3.03").
The driest month (with the least rainfall) is November (1.38").
Average rainfall days in December
Pleasant Unity, PA
- Average rainfall days in December: 11.5 days
The month with the highest number of rainy days is May (20.4 days).
The month with the least rainy days is January (9.5 days).
Average snowfall in December
Pleasant Unity, PA
- Average snowfall in December: 4.17"
The month with the highest snowfall is January (4.96").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
Pleasant Unity, PA
- Average snowfall days in December: 11.8 days
The month with the highest number of snowfall days is January (17.6 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Pleasant Unity, PA
- Average daylight in December: 9h and 24min
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 24min).
- Average sunshine in December: 3h and 30min
The month with the most sunshine is August (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 3h and 0min).
Average sunshine days in December
Pleasant Unity, PA
- Average sunshine days in December: 9.9 days
The month with the most sunshine days is November (14.4 days).
The month with the least sunshine days is January (7 days).
Average UV index in December
Pleasant Unity, PA
- Average UV index in December: 1
The months with the highest UV index are June and July (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in December
Pleasant Unity, PA
- Average cloud cover in December: 65
The month with the most cloud cover is January (Cloud cover 70).
The month with the least cloud cover is August (Cloud cover 35).
Average visibility in December
Pleasant Unity, PA
- Average visibility in December: 5mi
The month with the highest visibility is April (6mi).
The month with the lowest visibility is January (4mi).
