December weather forecastShiremanstown, PA
December
Weather in December
The first month of the winter, December, is still a cold month in Shiremanstown, Pennsylvania, with an average temperature ranging between min 29.7°F (-1.3°C) and max 41°F (5°C).Temperature
December brings a decrease in the average high-temperature, shifting from a cool 50°F (10°C) in November to a wintry 41°F (5°C). Shiremanstown encounters a steady low-temperature average of 29.7°F (-1.3°C) throughout the month of December.Humidity
In December, the average relative humidity is 79%.Rainfall
In Shiremanstown, during December, the rain falls for 8.4 days and regularly aggregates up to 0.87" (22mm) of precipitation. Throughout the year, there are 122.3 rainfall days, and 11.73" (298mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through April, November and December. In Shiremanstown, in December, during 3.5 snowfall days, 0.59" (15mm) of snow is typically accumulated. In Shiremanstown, during the entire year, snow falls for 19.9 days and aggregates up to 4.29" (109mm) of snow.Daylight
The month with the shortest days is December, with an average of 9h and 24min of daylight.On the first day of the month, sunrise is at 7:11 am and sunset at 4:42 pm. On the last day of December, sunrise is at 7:30 am and sunset at 4:52 pm EST.
Sunshine
The average sunshine in December is 4.7h.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 low health risk from exposure to the Sun's UV rays for ordinary individuals.Note: During December, 2 as the daily maximum UV index converts into the following advice:
While most people can stay under the sun for an hour without burning, children must always be guarded against sun exposure. Being in direct Sun during midday can be harmful due to intense solar radiation; take precautions. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage. Be aware! The reflective nature of snow can magnify the Sun's UV radiation almost twofold.
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Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Shiremanstown, PA
- Average high temperature in December: 41°F
The warmest month (with the highest average high temperature) is July (83.8°F).
The month with the lowest average high temperature is January (35.1°F).
- Average low temperature in December: 29.7°F
The month with the highest average low temperature is July (63.5°F).
The coldest month (with the lowest average low temperature) is January (22.1°F).
Average pressure in December
Shiremanstown, 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 (29.95"Hg).
Average wind speed in December
Shiremanstown, PA
- Average wind speed in December: 7.6mph
The windiest month (with the highest average wind speed) is March (8.2mph).
The calmest months (with the lowest average wind speed) are July and August (4.8mph).
Average humidity in December
Shiremanstown, PA
- Average humidity in December: 79%
The month with the highest relative humidity is February (80%).
The months with the lowest relative humidity are March and April (75%).
Average rainfall in December
Shiremanstown, PA
- Average rainfall in December: 0.87"
The wettest month (with the highest rainfall) is August (1.3").
The driest months (with the least rainfall) are January and February (0.71").
Average rainfall days in December
Shiremanstown, PA
- Average rainfall days in December: 8.4 days
The month with the highest number of rainy days is May (13.9 days).
The month with the least rainy days is January (5.7 days).
Average snowfall in December
Shiremanstown, PA
- Average snowfall in December: 0.59"
The month with the highest snowfall is February (1.3").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in December
Shiremanstown, PA
- Average snowfall days in December: 3.5 days
The month with the highest number of snowfall days is January (6.3 days).
The months with the least snowfall days are June, July, August, September and October (0 days).
Average daylight in December /
Average sunshine in December
Shiremanstown, 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 42min
The month with the most sunshine is July (Average sunshine: 10h and 30min).
The month with the least sunshine is February (Average sunshine: 4h and 30min).
Average sunshine days in December
Shiremanstown, PA
- Average sunshine days in December: 20.2 days
The month with the most sunshine days is November (21.8 days).
The month with the least sunshine days is July (14.1 days).
Average UV index in December
Shiremanstown, PA
- Average UV index in December: 2
The months with the highest UV index are May, June and July (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
Shiremanstown, PA
- Average cloud cover in December: 50
The months with the most cloud cover are February and December (Cloud cover 50).
The month with the least cloud cover is July (Cloud cover 31).
Average visibility in December
Shiremanstown, 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).
