Contents
- Weather in December
- Frequently asked questions
- Average temperature in December
- Average pressure in December
- Average wind speed in December
- Average humidity in December
- Average rainfall in December
- Average rainfall days in December
- Average snowfall in December
- Average snowfall days in December
- Average daylight in December
- Average sunshine in December
- Average sunshine days in December
- Average UV index in December
- Average cloud cover in December
- Average visibility in December
Weather in December
Temperature
December's arrival corresponds with a decrease in average high-temperatures, from November's chilly 45.1°F (7.3°C) to an icy 35.6°F (2°C). Throughout December, an average low-temperature of 25.2°F (-3.8°C) is experienced.Humidity
The months with the highest humidity are February and December, with an average relative humidity of 85%.Rainfall
In Hollisters, 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 December, it is snowing for 8.4 days. Throughout December, 4.21" (107mm) of snow is accumulated. In Hollisters, during the entire year, snow falls for 48.4 days and aggregates up to 22.01" (559mm) of snow.Daylight
December has the shortest days of the year in Hollisters, 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, sunrise is at 7:27 am and sunset at 4:42 pm EST.
Sunshine
The average sunshine in December is 3.6h.UV index
The months with the lowest UV index are January and December, with an average maximum UV index of 1. A UV Index estimate of 2, and below, represents a minimal health hazard from exposure to the Sun's UV rays for the average person.Note: In December, the maximum UV index of 1 suggests these recommendations:
Children, infants, and individuals with sensitive skin should be constantly protected from extended sun exposure. Midday is when the Sun's radiation is strongest; avoid prolonged exposure during this time. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration. Take heed! Reflection from the snow can almost amplify the Sun's UV radiation by double.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is it in December?
What is the most humid month?
What is the average humidity in December?
How much does it rain in December?
How many days does it snow in December?
What is the month with the shortest days?
How many hours of daylight does Hollisters have in December?
When are sunrise and sunset in December?
How long on average sun shines in December?
When is the lowest UV index?
What is the UV index reading in December?
Average temperature in December
Hollisters, 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
Hollisters, 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
Hollisters, 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
Hollisters, 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
Hollisters, 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
Hollisters, 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
Hollisters, 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
Hollisters, 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
Hollisters, PA
- Average daylight in December: 9h and 2min
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 4min
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
Hollisters, 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
Hollisters, 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
Hollisters, 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
Hollisters, 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).
Hollisters, Pennsylvania, USA
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