December weather forecastShenandoah Heights, PA
December
Weather in December
The first month of the winter, December, is also an icy month in Shenandoah Heights, Pennsylvania, with an average temperature varying between 27.5°F (-2.5°C) and 37.9°F (3.3°C).Temperature
The move into December indicates a reduction in the average high-temperature, down from November's chilly 47.3°F (8.5°C) to a wintry 37.9°F (3.3°C). The average temperature drops to a subzero cold 27.5°F (-2.5°C) during the night in the month of December.Humidity
The average relative humidity in December in Shenandoah Heights, Pennsylvania, is 82%.Rainfall
In December, in Shenandoah Heights, Pennsylvania, the rain falls for 12.6 days. Throughout December, 2.87" (73mm) of precipitation is accumulated. Throughout the year, in Shenandoah Heights, there are 171 rainfall days, and 34.25" (870mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, October through December. In Shenandoah Heights, in December, during 8.6 snowfall days, 3.9" (99mm) of snow is typically accumulated. In Shenandoah Heights, Pennsylvania, during the entire year, snow falls for 48.5 days and aggregates up to 27.72" (704mm) of snow.Daylight
December has the shortest days of the year in Shenandoah Heights, with an average of 9h and 18min of daylight.On the first day of December in Shenandoah Heights, Pennsylvania, sunrise is at 7:10 am and sunset at 4:37 pm. On the last day of the month, sunrise is at 7:29 am and sunset at 4:47 pm EST.
Sunshine
The average sunshine in December is 4.4h.UV index
January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Shenandoah Heights. A UV Index estimate of 2, and below, represents a low threat to health from exposure to the Sun's UV rays for ordinary individuals.Note: In December, a daily maximum UV index of 2 leads to the following instructions:
Children necessitate constant protection from sunlight, unlike the majority, who can remain under the sun for about an hour without burning. During midday, the Sun's radiation is strongest, and it's advisable to reduce direct exposure. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key. Take to heart! Snow reflection can almost magnify the Sun's UV radiation twofold.
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Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Shenandoah Heights, PA
- Average high temperature in December: 37.9°F
The warmest month (with the highest average high temperature) is July (81.1°F).
The month with the lowest average high temperature is January (31.8°F).
- Average low temperature in December: 27.5°F
The month with the highest average low temperature is July (61.2°F).
The coldest month (with the lowest average low temperature) is January (19.6°F).
Average pressure in December
Shenandoah Heights, PA
- Average pressure in December: 30.1"Hg
The month with the highest atmospheric pressure is November (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed in December
Shenandoah Heights, PA
- Average wind speed in December: 7.7mph
The windiest month (with the highest average wind speed) is March (8.3mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).
Average humidity in December
Shenandoah Heights, PA
- Average humidity in December: 82%
The month with the highest relative humidity is February (83%).
The month with the lowest relative humidity is April (77%).
Average rainfall in December
Shenandoah Heights, PA
- Average rainfall in December: 2.87"
The wettest month (with the highest rainfall) is May (3.39").
The driest month (with the least rainfall) is September (1.97").
Average rainfall days in December
Shenandoah Heights, PA
- Average rainfall days in December: 12.6 days
The month with the highest number of rainy days is May (19 days).
The month with the least rainy days is January (9.7 days).
Average snowfall in December
Shenandoah Heights, PA
- Average snowfall in December: 3.9"
The month with the highest snowfall is January (7.24").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Shenandoah Heights, PA
- Average snowfall days in December: 8.6 days
The month with the highest number of snowfall days is January (12.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Shenandoah Heights, 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: 4h and 24min
The month with the most sunshine is July (Average sunshine: 10h and 24min).
The months with the least sunshine are January and February (Average sunshine: 4h and 18min).
Average sunshine days in December
Shenandoah Heights, PA
- Average sunshine days in December: 13.6 days
The month with the most sunshine days is November (15.8 days).
The month with the least sunshine days is May (9.1 days).
Average UV index in December
Shenandoah Heights, PA
- Average UV index in December: 2
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, February, March, November and December (UV index 2).
Average cloud cover in December
Shenandoah Heights, PA
- Average cloud cover in December: 54
The month with the most cloud cover is February (Cloud cover 55).
The month with the least cloud cover is July (Cloud cover 33).
Average visibility in December
Shenandoah Heights, PA
- Average visibility in December: 5mi
The month with the highest visibility is April (6mi).
The months with the lowest visibility are January, February, March, May, June, July, August, September, October, November and December (5mi).
