December weather forecastFells Corners, PA
December
Weather in December
The first month of the winter, December, is still a cold month in Fells Corners, Pennsylvania, with an average temperature fluctuating between 25.2°F (-3.8°C) and 35.6°F (2°C).Temperature
December's onset corresponds with a shift in the average high-temperature, moving from a frosty 45.1°F (7.3°C) in November to an icy 35.6°F (2°C). Throughout the month of December, Fells Corners reports a steady low-temperature average of 25.2°F (-3.8°C).Humidity
The months with the highest humidity are February and December, with an average relative humidity of 85%.Rainfall
In Fells Corners, in December, it is raining for 8.1 days, with typically 1.54" (39mm) of accumulated precipitation. Throughout the year, there are 139.9 rainfall days, and 22.28" (566mm) of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall. In Fells Corners, in December, snow falls for 8.4 days, with typically accumulated 4.21" (107mm) of snow. Throughout the year, there are 48.4 snowfall days, and 22.01" (559mm) 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 the month, sunrise is at 7:09 am and sunset at 4:33 pm. On the last day of December, in Fells Corners, sunrise is at 7:27 am and sunset at 4:43 pm EST.
Sunshine
In December, the average sunshine is 3.6h.UV index
January and December, with an average maximum UV index of 1, are months with the lowest UV index. A UV Index of 2, and less, symbolizes a low threat to health from unsafe exposure to UV radiation for ordinary individuals.Note: An average UV index of 1 in December transforms into this advice:
Extended exposure to the sun should always be avoided by children, infants, and those with sensitive skin. Direct exposure to the Sun during its peak hours around mid-day should be minimized for safety. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades. Heads up! The UV radiation from the Sun can almost be doubled by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Fells Corners, PA
- Average high temperature in December: 35.6°F
The warmest month (with the highest average high temperature) is July (80.2°F).
The month with the lowest average high temperature is January (29.8°F).
- Average low temperature in December: 25.2°F
The month with the highest average low temperature is July (59°F).
The coldest month (with the lowest average low temperature) is January (18°F).
Average pressure in December
Fells Corners, 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 (29.94"Hg).
Average wind speed in December
Fells Corners, PA
- Average wind speed in December: 8mph
The windiest month (with the highest average wind speed) is February (8.5mph).
The calmest month (with the lowest average wind speed) is August (5.3mph).
Average humidity in December
Fells Corners, PA
- Average humidity in December: 85%
The months with the highest relative humidity are February and December (85%).
The months with the lowest relative humidity are April, June and July (78%).
Average rainfall in December
Fells Corners, PA
- Average rainfall in December: 1.54"
The wettest months (with the highest rainfall) are May and July (2.4").
The driest months (with the least rainfall) are January and September (1.38").
Average rainfall days in December
Fells Corners, PA
- Average rainfall days in December: 8.1 days
The month with the highest number of rainy days is May (17.4 days).
The month with the least rainy days is January (5.2 days).
Average snowfall in December
Fells Corners, PA
- Average snowfall in December: 4.21"
The month with the highest snowfall is March (5.08").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Fells Corners, PA
- Average snowfall days in December: 8.4 days
The month with the highest number of snowfall days is February (11.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Fells Corners, 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 36min
The month with the most sunshine is July (Average sunshine: 10h and 0min).
The month with the least sunshine is February (Average sunshine: 3h and 30min).
Average sunshine days in December
Fells Corners, PA
- Average sunshine days in December: 17.4 days
The month with the most sunshine days is January (18.4 days).
The month with the least sunshine days is May (11 days).
Average UV index in December
Fells Corners, PA
- Average UV index in December: 1
The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in December
Fells Corners, PA
- Average cloud cover in December: 64
The months with the most cloud cover are February and December (Cloud cover 64).
The month with the least cloud cover is July (Cloud cover 38).
Average visibility in December
Fells Corners, 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).
