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
With December's arrival, Murrysville sees a decrease in average high-temperatures, moving from a chilly 49.1°F (9.5°C) in November to a wintry 39.4°F (4.1°C). Murrysville, in December, experiences an average temperature of 28.2°F (-2.1°C) at night.Humidity
In Murrysville, the average relative humidity in December is 84%.Rainfall
In Murrysville, in December, during 9.3 rainfall days, 1.54" (39mm) of precipitation is typically accumulated. In Murrysville, during the entire year, the rain falls for 151 days and collects up to 20.39" (518mm) of precipitation.Snowfall
Months with snowfall are January through May, October through December. In Murrysville, during December, snow falls for 6.2 days and regularly aggregates up to 1.81" (46mm) of snow. Throughout the year, there are 35.4 snowfall days, and 10.35" (263mm) of snow is accumulated.Daylight
December has the shortest days of the year, with an average of 9h and 18min of daylight.On the first day of December, sunrise is at 7:23 am and sunset at 4:52 pm. On the last day of the month, sunrise is at 7:41 am and sunset at 5:02 pm EST.
Sunshine
The average sunshine in December is 3.3h.UV index
The month with the lowest UV index is December, with an average maximum UV index of 1. A UV Index estimate of 2, and below, represents a minimal health hazard from exposure to the Sun's UV radiation for the average person.Note: The daily high UV index of 1 in December translates into this advice:
Extended exposure to the sun should always be avoided by children, infants, and those with sensitive skin. Minimize direct exposure to the Sun during midday when its radiation is at its peak. Safeguard your eyes, ears, and face from sun rays with the aid of a wide-brim hat. Consider this! The reflection from snow can almost 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?
What is the average humidity in December?
How much does it rain in December?
How much does it snow in December?
What is the month with the shortest days?
What is the average length of the day in December?
What time are sunrise and sunset in December?
How long on average sun shines in December?
What is the month with the lowest UV index in Murrysville?
How high is the UV index in December?
Average temperature in December
Murrysville, PA
- Average high temperature in December: 39.4°F
The warmest month (with the highest average high temperature) is July (83.1°F).
The month with the lowest average high temperature is January (33.1°F).
- Average low temperature in December: 28.2°F
The month with the highest average low temperature is July (61.3°F).
The coldest month (with the lowest average low temperature) is January (20.7°F).
Average pressure in December
Murrysville, PA
- Average pressure in December: 30.11"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
Murrysville, PA
- Average wind speed in December: 7.5mph
The windiest month (with the highest average wind speed) is January (8.1mph).
The calmest month (with the lowest average wind speed) is August (4.7mph).
Average humidity in December
Murrysville, PA
- Average humidity in December: 84%
The month with the highest relative humidity is February (85%).
The months with the lowest relative humidity are April, July and August (76%).
Average rainfall in December
Murrysville, PA
- Average rainfall in December: 1.54"
The wettest month (with the highest rainfall) is May (2.56").
The driest month (with the least rainfall) is November (1.06").
Average rainfall days in December
Murrysville, PA
- Average rainfall days in December: 9.3 days
The month with the highest number of rainy days is May (18.2 days).
The month with the least rainy days is January (7.7 days).
Average snowfall in December
Murrysville, PA
- Average snowfall in December: 1.81"
The month with the highest snowfall is February (2.52").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Murrysville, PA
- Average snowfall days in December: 6.2 days
The month with the highest number of snowfall days is January (9.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Murrysville, 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: 3h and 2min
The month with the most sunshine is August (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 2h and 54min).
Average sunshine days in December
Murrysville, PA
- Average sunshine days in December: 17.1 days
The month with the most sunshine days is November (19.6 days).
The month with the least sunshine days is May (10.1 days).
Average UV index in December
Murrysville, PA
- Average UV index in December: 1
The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in December
Murrysville, PA
- Average cloud cover in December: 65
The month with the most cloud cover is January (Cloud cover 69).
The month with the least cloud cover is August (Cloud cover 33).
Average visibility in December
Murrysville, PA
- Average visibility in December: 5mi
The months with the highest visibility are April, June, August and November (6mi).
The months with the lowest visibility are January, February, March, May, July, September, October and December (5mi).
Murrysville, Pennsylvania, USA
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