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 ushers in a slight temperature change, with average high-temperatures reducing from November's chilly 48.6°F (9.2°C) to an icy 39.4°F (4.1°C). The temperature dips to an average of 28.2°F (-2.1°C) during December nights.Humidity
In December, the average relative humidity in Lake Wynonah is 81%.Rainfall
In December, in Lake Wynonah, the rain falls for 10.5 days. Throughout December, 1.57" (40mm) of precipitation is accumulated. In Lake Wynonah, Pennsylvania, during the entire year, the rain falls for 145.2 days and collects up to 21.1" (536mm) of precipitation.Snowfall
Months with snowfall are January through May, October through December. In December, in Lake Wynonah, it is snowing for 5.4 days. Throughout December, 1.38" (35mm) of snow is accumulated. In Lake Wynonah, Pennsylvania, during the entire year, snow falls for 28.1 days and aggregates up to 8.94" (227mm) of snow.Daylight
The month with the shortest days in Lake Wynonah is December, with an average of 9h and 18min of daylight.On the first day of the month, sunrise is at 7:09 am and sunset at 4:38 pm. On the last day of December, in Lake Wynonah, Pennsylvania, sunrise is at 7:28 am and sunset at 4:47 pm EST.
Sunshine
January, February and December, with an average of 4.5h of sunshine, are months with the least sunshine.UV index
The months with the lowest UV index in Lake Wynonah are January through March, November and December, with an average maximum UV index of 2. A UV Index reading of 2, and below, represents a low threat to health from exposure to the Sun's UV radiation for the average person.Note: The average daily UV index of 2 in December transforms into the following instructions:
Prolonged exposure to sunlight rarely troubles the majority, but constant protection is vital for babies, children, and fair-skinned people. Around midday, solar radiation is most harmful; hence, exposure should be limited. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage. Remember this! The UV radiation of the Sun can be nearly doubled by the reflective properties of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is it in Lake Wynonah in December?
What is the average humidity in December in Lake Wynonah?
How many days does it rain in December in Lake Wynonah?
How many days does it snow in December in Lake Wynonah?
What is the month with the shortest days in Lake Wynonah?
What is the average length of the day in December in Lake Wynonah?
When is the sunrise / sunset in December in Lake Wynonah?
What are the months with the least sunshine in Lake Wynonah?
How long on average sun shines in December in Lake Wynonah?
When is the lowest UV index in Lake Wynonah?
What is the UV index reading in December in Lake Wynonah?
Average temperature in December
Lake Wynonah, PA
- Average high temperature in December: 39.4°F
The warmest month (with the highest average high temperature) is July (81.9°F).
The month with the lowest average high temperature is January (33.4°F).
- Average low temperature in December: 28.2°F
The month with the highest average low temperature is July (62.1°F).
The coldest month (with the lowest average low temperature) is January (20.7°F).
Average pressure in December
Lake Wynonah, 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
Lake Wynonah, PA
- Average wind speed in December: 7.7mph
The windiest month (with the highest average wind speed) is March (8.4mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).
Average humidity in December
Lake Wynonah, 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 (77%).
Average rainfall in December
Lake Wynonah, PA
- Average rainfall in December: 1.57"
The wettest month (with the highest rainfall) is August (2.44").
The driest month (with the least rainfall) is September (1.26").
Average rainfall days in December
Lake Wynonah, PA
- Average rainfall days in December: 10.5 days
The month with the highest number of rainy days is May (15.6 days).
The month with the least rainy days is January (7 days).
Average snowfall in December
Lake Wynonah, PA
- Average snowfall in December: 1.38"
The month with the highest snowfall is January (2.36").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Lake Wynonah, PA
- Average snowfall days in December: 5.4 days
The month with the highest number of snowfall days is January (7.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Lake Wynonah, PA
- Average daylight in December: 9h and 2min
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 3min
The month with the most sunshine is July (Average sunshine: 10h and 24min).
The months with the least sunshine are January, February and December (Average sunshine: 4h and 30min).
Average sunshine days in December
Lake Wynonah, PA
- Average sunshine days in December: 16.8 days
The month with the most sunshine days is January (18.8 days).
The month with the least sunshine days is May (11.8 days).
Average UV index in December
Lake Wynonah, PA
- Average UV index in December: 2
The month with the highest UV index is 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
Lake Wynonah, PA
- Average cloud cover in December: 52
The months with the most cloud cover are February and December (Cloud cover 52).
The month with the least cloud cover is July (Cloud cover 32).
Average visibility in December
Lake Wynonah, PA
- Average visibility in December: 5mi
The months with the highest visibility are January, March, April, June, July and November (6mi).
The months with the lowest visibility are February, May, August, September, October and December (5mi).
Lake Wynonah, Pennsylvania, USA
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