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's onset brings a slight change in high-temperatures, falling from a cool 50°F (10°C) in November to a wintry 41°F (5°C). In December, the average low-temperature records at a subzero cold 29.7°F (-1.3°C) during the nights.Humidity
In Wormleysburg, the average relative humidity in December is 79%.Rainfall
In Wormleysburg, during December, the rain falls for 8.4 days and regularly aggregates up to 0.87" (22mm) of precipitation. In Wormleysburg, during the entire year, the rain falls for 122.3 days and collects up to 11.73" (298mm) of precipitation.Snowfall
January through April, November and December are months with snowfall in Wormleysburg. In December, in Wormleysburg, it is snowing for 3.5 days. Throughout December, 0.59" (15mm) of snow is accumulated. In Wormleysburg, Pennsylvania, during the entire year, snow falls for 19.9 days and aggregates up to 4.29" (109mm) of snow.Daylight
With an average of 9h and 24min of daylight, December has the shortest days of the year.On the first day of December, sunrise is at 7:11 am and sunset at 4:42 pm. On the last day of the month, sunrise is at 7:30 am and sunset at 4:51 pm EST.
Sunshine
The average sunshine in December is 4.7h.UV index
The months with the lowest UV index are January through March, November and December, with an average maximum UV index of 2. A UV Index estimate of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV radiation for ordinary individuals.Note: The maximum UV index of 2 during December translates into these guidelines:
While many people can endure lengthy sun exposure, it remains imperative to safeguard babies, children, and fair-skinned individuals. Limiting sun exposure during midday hours helps in reducing the harmful effects of UV radiation. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage. Notice! The UV radiation of the Sun can be intensified nearly twofold due to the reflective quality of snow.
Frequently asked questions
Is it cold in Wormleysburg during December?
What is the average humidity in December in Wormleysburg?
How many days does it rain in December in Wormleysburg?
How many days does it snow in December in Wormleysburg?
What is the month with the shortest days in Wormleysburg?
What is the average length of the day in December in Wormleysburg?
When are sunrise and sunset in December in Wormleysburg?
How long on average sun shines in December in Wormleysburg?
When is the lowest UV index in Wormleysburg?
What is the UV index intensity in December in Wormleysburg?
Average temperature in December
Wormleysburg, PA
- Average high temperature in December: 41°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 (35.1°F).
- Average low temperature in December: 29.7°F
The month with the highest average low temperature is July (63.5°F).
The coldest month (with the lowest average low temperature) is January (22.1°F).
Average pressure in December
Wormleysburg, 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 (29.95"Hg).
Average wind speed in December
Wormleysburg, PA
- Average wind speed in December: 7.6mph
The windiest month (with the highest average wind speed) is March (8.2mph).
The calmest months (with the lowest average wind speed) are July and August (4.8mph).
Average humidity in December
Wormleysburg, PA
- Average humidity in December: 79%
The month with the highest relative humidity is February (80%).
The months with the lowest relative humidity are March and April (75%).
Average rainfall in December
Wormleysburg, PA
- Average rainfall in December: 0.87"
The wettest month (with the highest rainfall) is August (1.3").
The driest months (with the least rainfall) are January and February (0.71").
Average rainfall days in December
Wormleysburg, PA
- Average rainfall days in December: 8.4 days
The month with the highest number of rainy days is May (13.9 days).
The month with the least rainy days is January (5.7 days).
Average snowfall in December
Wormleysburg, PA
- Average snowfall in December: 0.59"
The month with the highest snowfall is February (1.3").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in December
Wormleysburg, PA
- Average snowfall days in December: 3.5 days
The month with the highest number of snowfall days is January (6.3 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
Wormleysburg, 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 24min).
- Average sunshine in December: 4h and 4min
The month with the most sunshine is July (Average sunshine: 10h and 30min).
The month with the least sunshine is February (Average sunshine: 4h and 30min).
Average sunshine days in December
Wormleysburg, PA
- Average sunshine days in December: 20.2 days
The month with the most sunshine days is November (21.8 days).
The month with the least sunshine days is July (14.1 days).
Average UV index in December
Wormleysburg, PA
- Average UV index in December: 2
The months with the highest UV index are May, 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
Wormleysburg, PA
- Average cloud cover in December: 50
The months with the most cloud cover are February and December (Cloud cover 50).
The month with the least cloud cover is July (Cloud cover 31).
Average visibility in December
Wormleysburg, PA
- Average visibility in December: 6mi
The months with the highest visibility are January, February, March, April, June, July, August, October, November and December (6mi).
The months with the lowest visibility are May and September (5mi).
Wormleysburg, Pennsylvania, USA
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