December weather forecastStoystown, PA
December
Weather in December
The first month of the winter, December, is also a wintry month in Stoystown, Pennsylvania, with an average temperature ranging between min 25.7°F (-3.5°C) and max 36.5°F (2.5°C).Temperature
December's arrival comes with a decrease in the average high-temperature, moving from a chilly 46°F (7.8°C) in November to a cold 36.5°F (2.5°C). Stoystown observes an average low-temperature of 25.7°F (-3.5°C) during December.Humidity
In Stoystown, the average relative humidity in December is 86%.Rainfall
In Stoystown, during December, the rain falls for 10.4 days and regularly aggregates up to 3.11" (79mm) of precipitation. In Stoystown, during the entire year, the rain falls for 162.4 days and collects up to 32.24" (819mm) of precipitation.Snowfall
Months with snowfall are January through May, October through December. In Stoystown, during December, snow falls for 12.8 days and regularly aggregates up to 5.2" (132mm) of snow. In Stoystown, during the entire year, snow falls for 66 days and aggregates up to 32.36" (822mm) 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 7:19 am and sunset at 4:50 pm. On the last day of December, sunrise is at 7:37 am and sunset at 5:00 pm EST.
Sunshine
In Stoystown, the average sunshine in December is 3.1h.UV index
With an average maximum UV index of 1, December is the month with the lowest UV index. A UV Index estimate of 2, and below, represents a minimal health hazard from exposure to the Sun's UV rays for average individuals.Note: The average daily UV index of 1 in December transforms into the following instructions:
Sun exposure does not present considerable issues for many, yet infants, fair-skinned people, and children necessitate constant protection. During midday, the Sun's radiation is strongest, and it's advisable to reduce direct exposure. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses. Take note! UV radiation from the Sun can double in intensity due to snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Stoystown, PA
- Average high temperature in December: 36.5°F
The warmest month (with the highest average high temperature) is July (78.6°F).
The month with the lowest average high temperature is January (30.6°F).
- Average low temperature in December: 25.7°F
The month with the highest average low temperature is July (58.6°F).
The coldest month (with the lowest average low temperature) is January (18.1°F).
Average pressure in December
Stoystown, PA
- Average pressure in December: 30.11"Hg
The month with the highest atmospheric pressure is November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).
Average wind speed in December
Stoystown, PA
- Average wind speed in December: 9.9mph
The windiest month (with the highest average wind speed) is January (10.6mph).
The calmest month (with the lowest average wind speed) is August (5.6mph).
Average humidity in December
Stoystown, PA
- Average humidity in December: 86%
The month with the highest relative humidity is February (88%).
The months with the lowest relative humidity are April, June and July (80%).
Average rainfall in December
Stoystown, PA
- Average rainfall in December: 3.11"
The wettest month (with the highest rainfall) is May (3.27").
The driest month (with the least rainfall) is November (1.77").
Average rainfall days in December
Stoystown, PA
- Average rainfall days in December: 10.4 days
The month with the highest number of rainy days is May (19.8 days).
The month with the least rainy days is November (8.2 days).
Average snowfall in December
Stoystown, PA
- Average snowfall in December: 5.2"
The month with the highest snowfall is January (8.23").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Stoystown, PA
- Average snowfall days in December: 12.8 days
The month with the highest number of snowfall days is January (17.2 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Stoystown, 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: 3h and 6min
The month with the most sunshine is July (Average sunshine: 9h and 18min).
The month with the least sunshine is January (Average sunshine: 2h and 42min).
Average sunshine days in December
Stoystown, PA
- Average sunshine days in December: 9.6 days
The month with the most sunshine days is November (15.7 days).
The month with the least sunshine days is January (6.3 days).
Average UV index in December
Stoystown, PA
- Average UV index in December: 1
The months with the highest UV index are May, June, July and August (UV index 5).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in December
Stoystown, PA
- Average cloud cover in December: 70
The month with the most cloud cover is January (Cloud cover 75).
The months with the least cloud cover are July and August (Cloud cover 42).
Average visibility in December
Stoystown, PA
- Average visibility in December: 4mi
The months with the highest visibility are March, April, May, June, July, August, September, October and November (5mi).
The months with the lowest visibility are January, February and December (4mi).
