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
The average high-temperature decreases in December, shifting from a frosty 47.1°F (8.4°C) in November to a cold 37.2°F (2.9°C). An average low-temperature of 25.9°F (-3.4°C) is recorded during the nights in December.Humidity
In December, the average relative humidity is 86%.Rainfall
In Hilliards, Pennsylvania, in December, during 8.2 rainfall days, 1.02" (26mm) of precipitation is typically accumulated. Throughout the year, there are 140.7 rainfall days, and 15.43" (392mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, November and December. In December, it is snowing for 9.5 days. Throughout December, 1.06" (27mm) of snow is accumulated. In Hilliards, during the entire year, snow falls for 48.2 days and aggregates up to 6.85" (174mm) of snow.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 7:25 am and sunset at 4:51 pm. On the last day of December, sunrise is at 7:44 am and sunset at 5:00 pm EST.
Sunshine
The average sunshine in December in Hilliards is 2.7h.UV index
January and December, with an average maximum UV index of 1, are months with the lowest UV index in Hilliards. A UV Index estimate of 2, and below, represents a minimal health vulnerability from unsafe exposure to UV radiation for the average person.Note: The daily high UV index of 1 during December translates into the following recommendations:
Most individuals face no significant issues with extended sun exposure, but it is always essential to protect children, babies, and those with sensitive skin. Exposing oneself to the midday Sun can be harmful due to the strong UV radiation; limit your time outside. Employ a hat with a wide brim for robust protection, cutting UV exposure by half. Heed this! Snow reflection can almost augment the UV radiation of the sun by double.
Frequently asked questions
How cold is it in Hilliards in December?
What is the average humidity in December in Hilliards?
How many days does it rain in December in Hilliards?
How much does it snow in Hilliards in December?
What is the month with the shortest days in Hilliards?
How many hours of daylight does Hilliards have in December?
When is the sunrise / sunset in December in Hilliards?
How many hours of sunshine does Hilliards have in December?
What is the month with the lowest UV index in Hilliards?
What is the UV index intensity in December in Hilliards?
Average temperature in December
Hilliards, PA
- Average high temperature in December: 37.2°F
The warmest month (with the highest average high temperature) is July (81.5°F).
The month with the lowest average high temperature is January (31.3°F).
- Average low temperature in December: 25.9°F
The month with the highest average low temperature is July (59.7°F).
The coldest month (with the lowest average low temperature) is January (18.5°F).
Average pressure in December
Hilliards, 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
Hilliards, PA
- Average wind speed in December: 7.6mph
The windiest month (with the highest average wind speed) is January (8.2mph).
The calmest months (with the lowest average wind speed) are July and August (5.2mph).
Average humidity in December
Hilliards, 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, July and August (78%).
Average rainfall in December
Hilliards, PA
- Average rainfall in December: 1.02"
The wettest month (with the highest rainfall) is June (1.89").
The driest month (with the least rainfall) is November (0.87").
Average rainfall days in December
Hilliards, PA
- Average rainfall days in December: 8.2 days
The month with the highest number of rainy days is May (15.8 days).
The month with the least rainy days is January (5.9 days).
Average snowfall in December
Hilliards, PA
- Average snowfall in December: 1.06"
The month with the highest snowfall is January (1.93").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days in December
Hilliards, PA
- Average snowfall days in December: 9.5 days
The month with the highest number of snowfall days is January (13.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Hilliards, 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: 2h and 4min
The month with the most sunshine is August (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 2h and 18min).
Average sunshine days in December
Hilliards, PA
- Average sunshine days in December: 17.1 days
The month with the most sunshine days is December (17.1 days).
The month with the least sunshine days is July (12.2 days).
Average UV index in December
Hilliards, 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
Hilliards, PA
- Average cloud cover in December: 72
The month with the most cloud cover is January (Cloud cover 75).
The month with the least cloud cover is August (Cloud cover 38).
Average visibility in December
Hilliards, PA
- Average visibility in December: 5mi
The month with the highest visibility is April (6mi).
The months with the lowest visibility are January and February (4mi).
Hilliards, Pennsylvania, USA
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