December weather forecastGulph Terrace, PA
December
Weather in December
The first month of the winter, December, is still a chilly month in Gulph Terrace, Pennsylvania, with an average temperature fluctuating between 43.2°F (6.2°C) and 32°F (0°C).Temperature
A mild shift in the average high-temperature occurs in December, reducing from a fresh 52°F (11.1°C) in November to a chilly 43.2°F (6.2°C). An average low-temperature of 32°F (0°C) is observed during the December nights.Humidity
The average relative humidity in December is 77%.Rainfall
In Gulph Terrace, in December, it is raining for 6.5 days, with typically 0.91" (23mm) of accumulated precipitation. In Gulph Terrace, during the entire year, the rain falls for 111.8 days and collects up to 9.69" (246mm) of precipitation.Snowfall
Months with snowfall are January through March, November and December. In Gulph Terrace, in December, snow falls for 2.1 days, with typically accumulated 0.63" (16mm) of snow. In Gulph Terrace, during the entire year, snow falls for 15.1 days and aggregates up to 3.66" (93mm) of snow.Daylight
December has the shortest days of the year, with an average of 9h and 24min of daylight.On the first day of the month, sunrise is at 7:04 am and sunset at 4:36 pm. On the last day of December, in Gulph Terrace, sunrise is at 7:23 am and sunset at 4:46 pm EST.
Sunshine
In Gulph Terrace, the average sunshine in December is 4.9h.UV index
The months with the lowest UV index in Gulph Terrace are January, February, November and December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a low health risk from unsafe exposure to UV radiation for the ordinary person.Note: A maximum UV index of 2 in December translates into the following recommendations:
Children, infants, and individuals with sensitive skin should be constantly protected from extended sun exposure. Direct exposure to the Sun during its peak hours around mid-day should be minimized for safety. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection. Mind you! Snow reflection can increase the intensity of the Sun's UV radiation nearly twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Gulph Terrace, PA
- Average high temperature in December: 43.2°F
The warmest month (with the highest average high temperature) is July (85.8°F).
The month with the lowest average high temperature is January (36.7°F).
- Average low temperature in December: 32°F
The month with the highest average low temperature is July (68.9°F).
The coldest month (with the lowest average low temperature) is January (25°F).
Average pressure in December
Gulph Terrace, PA
- Average pressure in December: 30.09"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
Gulph Terrace, PA
- Average wind speed in December: 7.8mph
The windiest month (with the highest average wind speed) is March (8.5mph).
The calmest month (with the lowest average wind speed) is August (5.5mph).
Average humidity in December
Gulph Terrace, PA
- Average humidity in December: 77%
The months with the highest relative humidity are February and October (78%).
The months with the lowest relative humidity are April, July and August (71%).
Average rainfall in December
Gulph Terrace, PA
- Average rainfall in December: 0.91"
The wettest months (with the highest rainfall) are July and August (1.14").
The driest month (with the least rainfall) is January (0.55").
Average rainfall days in December
Gulph Terrace, PA
- Average rainfall days in December: 6.5 days
The month with the highest number of rainy days is July (13.3 days).
The month with the least rainy days is January (5.3 days).
Average snowfall in December
Gulph Terrace, PA
- Average snowfall in December: 0.63"
The months with the highest snowfall are February and March (0.98").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in December
Gulph Terrace, PA
- Average snowfall days in December: 2.1 days
The month with the highest number of snowfall days is January (4.5 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
Gulph Terrace, 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 36min).
Average sunshine days in December
Gulph Terrace, PA
- Average sunshine days in December: 22.2 days
The month with the most sunshine days is November (22.5 days).
The month with the least sunshine days is July (14.9 days).
Average UV index in December
Gulph Terrace, 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, November and December (UV index 2).
Average cloud cover in December
Gulph Terrace, 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
Gulph Terrace, PA
- Average visibility in December: 6mi
The months with the highest visibility are January, February, March, April, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is May (5mi).
