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 average high-temperature decreases in December, shifting from a frosty 48°F (8.9°C) in November to a cold 38.7°F (3.7°C). Throughout the month of December, Winfield expects an average low of 28°F (-2.2°C).Humidity
In December, the average relative humidity is 81%.Rainfall
November and December are months with the least rain when the rain falls for 9.4 days and typically aggregates up to 1.18" (30mm) of rain.Snowfall
Months with snowfall are January through April, November and December. In Winfield, during December, snow falls for 7 days and regularly aggregates up to 1.14" (29mm) of snow. In Winfield, during the entire year, snow falls for 36.6 days and aggregates up to 9.76" (248mm) of snow.Daylight
December has the shortest days of the year, with an average of 9h and 18min of daylight.On the first day of the month, sunrise is at 7:13 am and sunset at 4:40 pm. On the last day of December, sunrise is at 7:31 am and sunset at 4:49 pm EST.
Sunshine
The average sunshine in December is 4.2h.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 estimate of 2, and below, represents a low threat to health from unprotected exposure to Sun's UV rays for average individuals.Note: An average maximum UV index of 2 in December leads to these recommendations:
Babies, children, and individuals with sensitive skin should always have protection against extended sun exposure. It's crucial to reduce time in the direct Sun around mid-day due to the intense solar radiation. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades. Notice! The UV radiation of the Sun can be intensified nearly twofold due to the reflective quality of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Is December cold?
What is the average humidity in December?
What is the driest month?
How many days does it rain in December?
How many days does it snow in December?
What is the month with the shortest days?
What is the average length of the day in December?
What time are sunrise and sunset in December?
How long on average sun shines in December?
What are the months with the lowest UV index in Winfield?
What is the UV index intensity in December?
Average temperature in December
Winfield, PA
- Average high temperature in December: 38.7°F
The warmest month (with the highest average high temperature) is July (82.2°F).
The month with the lowest average high temperature is January (32°F).
- Average low temperature in December: 28°F
The month with the highest average low temperature is July (60.6°F).
The coldest month (with the lowest average low temperature) is January (20.1°F).
Average pressure in December
Winfield, PA
- Average pressure in December: 30.1"Hg
The month with the highest atmospheric pressure is November (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed in December
Winfield, PA
- Average wind speed in December: 7mph
The windiest month (with the highest average wind speed) is April (7.7mph).
The calmest month (with the lowest average wind speed) is August (4.6mph).
Average humidity in December
Winfield, PA
- Average humidity in December: 81%
The month with the highest relative humidity is February (82%).
The months with the lowest relative humidity are March and April (76%).
Average rainfall in December
Winfield, PA
- Average rainfall in December: 1.18"
The wettest month (with the highest rainfall) is May (2.48").
The driest months (with the least rainfall) are November and December (1.18").
Average rainfall days in December
Winfield, PA
- Average rainfall days in December: 9.4 days
The month with the highest number of rainy days is May (16.7 days).
The month with the least rainy days is February (7.4 days).
Average snowfall in December
Winfield, PA
- Average snowfall in December: 1.14"
The month with the highest snowfall is February (3.58").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in December
Winfield, PA
- Average snowfall days in December: 7 days
The month with the highest number of snowfall days is January (11 days).
The months with the least snowfall days are June, July, August, September and October (0 days).
Average daylight in December /
Average sunshine in December
Winfield, PA
- Average daylight in December: 9h and 2min
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 1min
The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is February (Average sunshine: 4h and 0min).
Average sunshine days in December
Winfield, PA
- Average sunshine days in December: 16.7 days
The month with the most sunshine days is November (18.1 days).
The month with the least sunshine days is May (11.9 days).
Average UV index in December
Winfield, PA
- Average UV index in December: 2
The months with the highest UV index are June and July (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
Winfield, PA
- Average cloud cover in December: 56
The months with the most cloud cover are February and December (Cloud cover 56).
The month with the least cloud cover is July (Cloud cover 33).
Average visibility in December
Winfield, PA
- Average visibility in December: 6mi
The months with the highest visibility are March, April, November and December (6mi).
The months with the lowest visibility are January, February, May, June, July, August, September and October (5mi).
Winfield, Pennsylvania, USA
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