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 frosty 47.8°F (8.8°C) in November to a wintry 38.5°F (3.6°C). Normalville records a steady low-temperature average of 27.3°F (-2.6°C) during December.Humidity
The average relative humidity in December is 85%.Rainfall
In Normalville, in December, during 10.8 rainfall days, 3.03" (77mm) of precipitation is typically accumulated. Throughout the year, there are 179.1 rainfall days, and 33.43" (849mm) of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall in Normalville. In Normalville, during December, snow falls for 12.5 days and regularly aggregates up to 6.57" (167mm) of snow. In Normalville, during the entire year, snow falls for 63.4 days and aggregates up to 34.17" (868mm) of snow.Daylight
The month with the shortest days is December, 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 4:53 pm. On the last day of December, in Normalville, Pennsylvania, sunrise is at 7:39 am and sunset at 5:02 pm EST.
Sunshine
In December, the average sunshine in Normalville is 3.5h.UV index
The months with the lowest UV index are January through March, October through December, with an average maximum UV index of 2. A UV Index value of 2, and less, symbolizes a low threat to health from unsafe exposure to UV radiation for the average person.Note: In December, a daily maximum UV index of 2 leads to the following instructions:
Children, infants, and individuals with sensitive skin should be constantly protected from extended sun exposure. Limiting sun exposure during midday hours helps in reducing the harmful effects of UV radiation. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly. Keep in mind! Snow's reflective quality can nearly double the intensity of the Sun's UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is December in Normalville?
What is the average humidity in December?
How much does it rain in December?
How many days does it snow in December?
What is the month with the shortest days?
How many hours of daylight does Normalville have in December?
When is the sunrise / sunset in December in Normalville?
How many hours of sunshine does Normalville have in December?
What are the months with the lowest UV index?
What is the UV index intensity in December?
Average temperature in December
Normalville, PA
- Average high temperature in December: 38.5°F
The warmest month (with the highest average high temperature) is July (81.1°F).
The month with the lowest average high temperature is January (32.4°F).
- Average low temperature in December: 27.3°F
The month with the highest average low temperature is July (60.1°F).
The coldest month (with the lowest average low temperature) is January (19.9°F).
Average pressure in December
Normalville, 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
Normalville, PA
- Average wind speed in December: 8.3mph
The windiest month (with the highest average wind speed) is January (8.9mph).
The calmest month (with the lowest average wind speed) is August (4.9mph).
Average humidity in December
Normalville, PA
- Average humidity in December: 85%
The months with the highest relative humidity are January and February (86%).
The months with the lowest relative humidity are April, June, July and August (78%).
Average rainfall in December
Normalville, PA
- Average rainfall in December: 3.03"
The wettest month (with the highest rainfall) is May (3.62").
The driest month (with the least rainfall) is November (1.97").
Average rainfall days in December
Normalville, PA
- Average rainfall days in December: 10.8 days
The month with the highest number of rainy days is May (22.6 days).
The month with the least rainy days is January (8.4 days).
Average snowfall in December
Normalville, PA
- Average snowfall in December: 6.57"
The month with the highest snowfall is January (7.99").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Normalville, PA
- Average snowfall days in December: 12.5 days
The month with the highest number of snowfall days is January (16.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Normalville, 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: 3h and 3min
The month with the most sunshine is July (Average sunshine: 9h and 54min).
The month with the least sunshine is January (Average sunshine: 3h and 0min).
Average sunshine days in December
Normalville, PA
- Average sunshine days in December: 10.1 days
The month with the most sunshine days is November (14.6 days).
The month with the least sunshine days is May (7.4 days).
Average UV index in December
Normalville, 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, October, November and December (UV index 2).
Average cloud cover in December
Normalville, 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 37).
Average visibility in December
Normalville, PA
- Average visibility in December: 5mi
The month with the highest visibility is April (6mi).
The months with the lowest visibility are January and February (4mi).
Normalville, Pennsylvania, USA
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