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 implies a gentle temperature shift, with average high-temperatures reducing from November's frosty 43.7°F (6.5°C) to an icy 34.5°F (1.4°C). During the month of December, Sheffield experiences a steady low-temperature average of 24.8°F (-4°C).Humidity
In December, the average relative humidity is 88%.Rainfall
In Sheffield, Pennsylvania, during December, the rain falls for 10.4 days and regularly aggregates up to 3.15" (80mm) of precipitation. Throughout the year, there are 175.4 rainfall days, and 35.2" (894mm) of precipitation is accumulated.Snowfall
Months with snowfall in Sheffield are January through May, October through December. In December, it is snowing for 20.8 days. Throughout December, 12.32" (313mm) of snow is accumulated. Throughout the year, in Sheffield, there are 101.6 snowfall days, and 57.36" (1457mm) of snow is accumulated.Daylight
The month with the shortest days is December, with an average of 9h and 12min of daylight.On the first day of the month, sunrise is at 7:24 am and sunset at 4:46 pm. On the last day of December, in Sheffield, sunrise is at 7:43 am and sunset at 4:55 pm EST.
Sunshine
The average sunshine in December in Sheffield is 2.3h.UV index
January and December, with an average maximum UV index of 1, are months with the lowest UV index in Sheffield. A UV Index estimate of 2, and below, represents a low health risk from exposure to the Sun's UV radiation for the ordinary person.Note: A maximum high UV index of 1 in December translates into the following recommendations:
Protection from prolonged sun exposure is necessary for babies, children, and individuals with sensitive skin. Stay safe from the Sun's strongest UV rays by limiting exposure during midday. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized. Remember to consider! The UV radiation from the Sun can be intensified nearly twice by the reflection of snow.
Frequently asked questions
How cold is December in Sheffield?
What is the average humidity in December in Sheffield?
How much does it rain in Sheffield in December?
How many days does it snow in December in Sheffield?
What is the month with the shortest days in Sheffield?
How many hours of daylight does Sheffield have in December?
When is the sunrise / sunset in December in Sheffield?
How long on average sun shines in December in Sheffield?
What are the months with the lowest UV index in Sheffield?
What is the UV index reading in December in Sheffield?
Average temperature in December
Sheffield, PA
- Average high temperature in December: 34.5°F
The warmest month (with the highest average high temperature) is July (78.3°F).
The month with the lowest average high temperature is January (28°F).
- Average low temperature in December: 24.8°F
The month with the highest average low temperature is July (56.8°F).
The coldest month (with the lowest average low temperature) is January (16.2°F).
Average pressure in December
Sheffield, 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
Sheffield, PA
- Average wind speed in December: 8.5mph
The windiest month (with the highest average wind speed) is January (9.2mph).
The calmest month (with the lowest average wind speed) is August (5.5mph).
Average humidity in December
Sheffield, PA
- Average humidity in December: 88%
The months with the highest relative humidity are January and February (89%).
The months with the lowest relative humidity are May and June (80%).
Average rainfall in December
Sheffield, PA
- Average rainfall in December: 3.15"
The wettest month (with the highest rainfall) is April (3.9").
The driest month (with the least rainfall) is September (2.2").
Average rainfall days in December
Sheffield, PA
- Average rainfall days in December: 10.4 days
The month with the highest number of rainy days is May (20.1 days).
The month with the least rainy days is January (7.3 days).
Average snowfall in December
Sheffield, PA
- Average snowfall in December: 12.32"
The month with the highest snowfall is February (13.03").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Sheffield, PA
- Average snowfall days in December: 20.8 days
The month with the highest number of snowfall days is January (23.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Sheffield, 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: 2h and 2min
The month with the most sunshine is July (Average sunshine: 9h and 24min).
The month with the least sunshine is January (Average sunshine: 2h and 6min).
Average sunshine days in December
Sheffield, PA
- Average sunshine days in December: 5.5 days
The month with the most sunshine days is September (12.1 days).
The month with the least sunshine days is February (4.6 days).
Average UV index in December
Sheffield, 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
Sheffield, PA
- Average cloud cover in December: 78
The month with the most cloud cover is January (Cloud cover 81).
The month with the least cloud cover is July (Cloud cover 42).
Average visibility in December
Sheffield, PA
- Average visibility in December: 4mi
The months with the highest visibility are April, May, June, July, October and November (5mi).
The months with the lowest visibility are January, February, March, August, September and December (4mi).
Sheffield, Pennsylvania, USA
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