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 45.9°F (7.7°C) in November to a cold 36°F (2.2°C). Throughout December nights, Prompton experiences a consistent temperature average of 25°F (-3.9°C).Humidity
With an average relative humidity of 85%, December is the most humid month in Prompton, Pennsylvania.Rainfall
In Prompton, Pennsylvania, in December, during 8.5 rainfall days, 1.46" (37mm) of precipitation is typically accumulated. Throughout the year, in Prompton, there are 132.5 rainfall days, and 19.21" (488mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, October through December. The months with the most snowfall are January and December, with an average 3.27" (83mm) of accumulated snow.Daylight
December has the shortest days of the year in Prompton, with an average of 9h and 12min of daylight.On the first day of the month, sunrise is at 7:09 am and sunset at 4:32 pm. On the last day of December, in Prompton, sunrise is at 7:27 am and sunset at 4:41 pm EST.
Sunshine
The average sunshine in December is 3.8h.UV index
The month with the lowest UV index is December, with an average maximum UV index of 1. A UV Index of 2, and less, symbolizes a minimal health hazard from unprotected exposure to Sun's UV rays for the ordinary person.Note: The average daily UV index of 1 in December transforms into the following instructions:
While many people can endure lengthy sun exposure, it remains imperative to safeguard babies, children, and fair-skinned individuals. Avoid the Sun's strongest UV rays by seeking shade and limiting exposure during midday. A wide-brimmed hat is a staple for defending the face, eyes, ears, and neck from the Sun. Be advised! The UV radiation from the Sun can be almost doubled due to the reflective properties of snow.
Frequently asked questions
How cold is it in Prompton in December?
What is the most humid month in Prompton?
What is the average humidity in December in Prompton?
How many days does it rain in December in Prompton?
When does it snow the most in Prompton?
How much does it snow in Prompton in December?
What is the month with the shortest days in Prompton?
What is the average length of the day in December in Prompton?
What time are sunrise and sunset in December in Prompton?
How many hours of sunshine does Prompton have in December?
What is the month with the lowest UV index in Prompton?
What is the UV index intensity in December in Prompton?
Average temperature in December
Prompton, PA
- Average high temperature in December: 36°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 (30.4°F).
- Average low temperature in December: 25°F
The month with the highest average low temperature is July (58.6°F).
The coldest month (with the lowest average low temperature) is January (18°F).
Average pressure in December
Prompton, 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 (29.93"Hg).
Average wind speed in December
Prompton, PA
- Average wind speed in December: 7.9mph
The windiest month (with the highest average wind speed) is February (8.4mph).
The calmest month (with the lowest average wind speed) is August (5.3mph).
Average humidity in December
Prompton, PA
- Average humidity in December: 85%
The month with the highest relative humidity is December (85%).
The month with the lowest relative humidity is July (77%).
Average rainfall in December
Prompton, PA
- Average rainfall in December: 1.46"
The wettest months (with the highest rainfall) are July and August (2.09").
The driest months (with the least rainfall) are January and September (1.14").
Average rainfall days in December
Prompton, PA
- Average rainfall days in December: 8.5 days
The month with the highest number of rainy days is May (15.6 days).
The months with the least rainy days are January and February (6.9 days).
Average snowfall in December
Prompton, PA
- Average snowfall in December: 3.27"
The months with the highest snowfall are January and December (3.27").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Prompton, PA
- Average snowfall days in December: 8.2 days
The month with the highest number of snowfall days is February (10.6 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Prompton, PA
- Average daylight in December: 9h and 1min
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 12min).
- Average sunshine in December: 3h and 5min
The month with the most sunshine is July (Average sunshine: 10h and 6min).
The month with the least sunshine is February (Average sunshine: 3h and 36min).
Average sunshine days in December
Prompton, PA
- Average sunshine days in December: 15.2 days
The month with the most sunshine days is September (18.6 days).
The month with the least sunshine days is February (12.5 days).
Average UV index in December
Prompton, PA
- Average UV index in December: 1
The months with the highest UV index are May, June, July and August (UV index 5).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in December
Prompton, PA
- Average cloud cover in December: 62
The months with the most cloud cover are February and December (Cloud cover 62).
The month with the least cloud cover is July (Cloud cover 38).
Average visibility in December
Prompton, PA
- Average visibility in December: 5mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (5mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (5mi).
Prompton, Pennsylvania, USA
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