December weather forecastBarlow Heights, PA
December
Weather in December
The first month of the winter, December, is also an icy month in Barlow Heights, Pennsylvania, with an average temperature fluctuating between 30.2°F (-1°C) and 41.5°F (5.3°C).Temperature
December shows a mild decline in the average high-temperature, falling from November's fresh 50.7°F (10.4°C) to a cold 41.5°F (5.3°C). An average low-temperature of 30.2°F (-1°C) is observed during the December nights.Humidity
In Barlow Heights, the average relative humidity in December is 79%.Rainfall
In December, in Barlow Heights, the rain falls for 9.5 days. Throughout December, 2.32" (59mm) of precipitation is accumulated. Throughout the year, in Barlow Heights, Pennsylvania, there are 146.5 rainfall days, and 27.87" (708mm) of precipitation is accumulated.Snowfall
January through April, November and December are months with snowfall. In Barlow Heights, in December, snow falls for 2.7 days, with typically accumulated 1.89" (48mm) of snow. Throughout the year, in Barlow Heights, there are 19.1 snowfall days, and 11.54" (293mm) of snow is accumulated.Daylight
With an average of 9h and 24min of daylight, December has the shortest days of the year.On the first day of December in Barlow Heights, sunrise is at 7:06 am and sunset at 4:36 pm. On the last day of the month, sunrise is at 7:24 am and sunset at 4:46 pm EST.
Sunshine
The average sunshine in December in Barlow Heights, Pennsylvania, is 4.9h.UV index
January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index estimate of 2, and below, represents a minimal health vulnerability from unsafe exposure to UV radiation for ordinary individuals.Note: The daily high UV index of 2 during December translates into the following recommendations:
Children must always have sun protection, unlike most people, who can tolerate up to an hour in the sun without any burns. Direct Sun exposure should be minimized especially during midday when radiation is most intense. A hat with a broad brim is indispensable, filtering out up to half of UV rays. Take into account! The reflection from snow can nearly double the Sun's UV radiation intensity.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Barlow Heights, PA
- Average high temperature in December: 41.5°F
The warmest month (with the highest average high temperature) is July (84.2°F).
The month with the lowest average high temperature is January (35.4°F).
- Average low temperature in December: 30.2°F
The month with the highest average low temperature is July (65.5°F).
The coldest month (with the lowest average low temperature) is January (23.2°F).
Average pressure in December
Barlow Heights, PA
- Average pressure in December: 30.1"Hg
The month with the highest atmospheric pressure is November (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed in December
Barlow Heights, PA
- Average wind speed in December: 7.6mph
The windiest month (with the highest average wind speed) is March (8.1mph).
The calmest month (with the lowest average wind speed) is August (5mph).
Average humidity in December
Barlow Heights, PA
- Average humidity in December: 79%
The months with the highest relative humidity are February and October (80%).
The months with the lowest relative humidity are April and July (75%).
Average rainfall in December
Barlow Heights, PA
- Average rainfall in December: 2.32"
The wettest month (with the highest rainfall) is August (3.15").
The driest month (with the least rainfall) is September (1.81").
Average rainfall days in December
Barlow Heights, PA
- Average rainfall days in December: 9.5 days
The months with the highest number of rainy days are May and July (17 days).
The month with the least rainy days is January (7.3 days).
Average snowfall in December
Barlow Heights, PA
- Average snowfall in December: 1.89"
The month with the highest snowfall is March (3.7").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in December
Barlow Heights, PA
- Average snowfall days in December: 2.7 days
The month with the highest number of snowfall days is January (5.8 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in December /
Average sunshine in December
Barlow Heights, PA
- Average daylight in December: 9h and 24min
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 54min
The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is February (Average sunshine: 4h and 42min).
Average sunshine days in December
Barlow Heights, PA
- Average sunshine days in December: 19.4 days
The month with the most sunshine days is November (21 days).
The month with the least sunshine days is May (12.3 days).
Average UV index in December
Barlow Heights, PA
- Average UV index in December: 2
The months with the highest UV index are May, June, July and August (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
Barlow Heights, PA
- Average cloud cover in December: 48
The month with the most cloud cover is February (Cloud cover 49).
The month with the least cloud cover is July (Cloud cover 32).
Average visibility in December
Barlow Heights, 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).
