December weather forecastProspect, PA
December
Weather in December
December, the first month of the winter in Prospect, is still a cold month, with temperature in the range of an average high of 37.9°F (3.3°C) and an average low of 26.8°F (-2.9°C).Temperature
With December's onset, the weather shows a temperature decrease, transitioning from a frosty 47.5°F (8.6°C) in November to an icy 37.9°F (3.3°C). An average nighttime temperature of 26.8°F (-2.9°C) is noted during the month of December.Humidity
In Prospect, the average relative humidity in December is 86%.Rainfall
In December, the rain falls for 11.6 days. Throughout December, 2.83" (72mm) of precipitation is accumulated. Throughout the year, in Prospect, there are 179.7 rainfall days, and 35.35" (898mm) of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall. In Prospect, during December, snow falls for 14.9 days and regularly aggregates up to 5.12" (130mm) of snow. In Prospect, during the entire year, snow falls for 70.8 days and aggregates up to 27.76" (705mm) of snow.Daylight
The month with the shortest days in Prospect, Pennsylvania, is December, with an average of 9h and 18min of daylight.On the first day of the month, sunrise is at 7:26 am and sunset at 4:52 pm. On the last day of December, sunrise is at 7:44 am and sunset at 5:02 pm EST.
Sunshine
In December, the average sunshine is 3h.UV index
December is the month with the lowest UV index in Prospect, with an average maximum UV index of 1. A UV Index reading of 2, and below, represents a low health risk from exposure to the Sun's UV rays for the average person.Note: In December, an average UV index of 1 transforms into the following instructions:
Extended exposure to the sun should always be avoided by children, infants, and those with sensitive skin. UV radiation is strongest from the Sun during midday; protect yourself by staying in shaded areas. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays. Take heed! The reflection of snow can intensify the Sun's UV radiation nearly double.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Prospect, PA
- Average high temperature in December: 37.9°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 (31.6°F).
- Average low temperature in December: 26.8°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 (19.2°F).
Average pressure in December
Prospect, 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
Prospect, PA
- Average wind speed in December: 7.5mph
The windiest month (with the highest average wind speed) is January (8.1mph).
The calmest months (with the lowest average wind speed) are July and August (5mph).
Average humidity in December
Prospect, PA
- Average humidity in December: 86%
The month with the highest relative humidity is February (87%).
The months with the lowest relative humidity are April, May, June, July and August (78%).
Average rainfall in December
Prospect, PA
- Average rainfall in December: 2.83"
The wettest month (with the highest rainfall) is April (3.7").
The driest month (with the least rainfall) is November (2.28").
Average rainfall days in December
Prospect, PA
- Average rainfall days in December: 11.6 days
The month with the highest number of rainy days is May (19.9 days).
The month with the least rainy days is January (9.4 days).
Average snowfall in December
Prospect, PA
- Average snowfall in December: 5.12"
The month with the highest snowfall is January (7.68").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Prospect, PA
- Average snowfall days in December: 14.9 days
The month with the highest number of snowfall days is January (19.1 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Prospect, PA
- Average daylight in December: 9h and 18min
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: 3h and 0min
The month with the most sunshine is August (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 2h and 36min).
Average sunshine days in December
Prospect, PA
- Average sunshine days in December: 8.6 days
The month with the most sunshine days is November (14 days).
The month with the least sunshine days is February (6.6 days).
Average UV index in December
Prospect, PA
- Average UV index in December: 1
The month with the highest UV index is July (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in December
Prospect, PA
- Average cloud cover in December: 68
The month with the most cloud cover is January (Cloud cover 73).
The month with the least cloud cover is August (Cloud cover 35).
Average visibility in December
Prospect, PA
- Average visibility in December: 4mi
The month with the highest visibility is April (6mi).
The months with the lowest visibility are January, February and December (4mi).
