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
Fort Hill's average high-temperature decreases in December, falling from a frosty 46.4°F (8°C) in November to an icy 37.2°F (2.9°C). Fort Hill's temperature lowers to a mean of 25.7°F (-3.5°C) during the nights in December.Humidity
In December, the average relative humidity is 85%.Rainfall
In Fort Hill, during December, the rain falls for 11.7 days and regularly aggregates up to 3.27" (83mm) of precipitation. Throughout the year, there are 183.2 rainfall days, and 35.94" (913mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, October through December. In December, it is snowing for 12.5 days. Throughout December, 5.16" (131mm) of snow is accumulated. Throughout the year, there are 68.3 snowfall days, and 33.39" (848mm) of snow is accumulated.Daylight
With an average of 9h and 24min of daylight, December has the shortest days of the year.On the first day of December, sunrise is at 7:19 am and sunset at 4:52 pm. On the last day of the month, sunrise is at 7:38 am and sunset at 5:02 pm EST.
Sunshine
The average sunshine in December is 3.6h.UV index
The months with the lowest UV index in Fort Hill are January through March, October through December, with an average maximum UV index of 2. A UV Index estimate of 2, and below, represents a low threat to health from exposure to the Sun's UV rays for average individuals.Note: The UV index of 2 in December translates into these instructions:
While most people can stay under the sun for an hour without burning, children must always be guarded against sun exposure. The Sun is at its harshest during midday; protect yourself by staying in shaded areas and minimizing exposure. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation. Be mindful! The reflection from snow can increase the Sun's UV radiation nearly twice.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is it in December?
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?
What is the average length of the day in December?
When is the sunrise / sunset in December?
How long on average sun shines in December?
What are the months with the lowest UV index?
How high is the UV index in December in Fort Hill?
Average temperature in December
Fort Hill, PA
- Average high temperature in December: 37.2°F
The warmest month (with the highest average high temperature) is July (79.3°F).
The month with the lowest average high temperature is January (31.5°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 (18.9°F).
Average pressure in December
Fort Hill, 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
Fort Hill, PA
- Average wind speed in December: 9.4mph
The windiest month (with the highest average wind speed) is January (10.1mph).
The calmest month (with the lowest average wind speed) is August (5.3mph).
Average humidity in December
Fort Hill, PA
- Average humidity in December: 85%
The month with the highest relative humidity is February (86%).
The months with the lowest relative humidity are April, June and July (79%).
Average rainfall in December
Fort Hill, PA
- Average rainfall in December: 3.27"
The wettest month (with the highest rainfall) is May (3.94").
The driest month (with the least rainfall) is November (2.09").
Average rainfall days in December
Fort Hill, PA
- Average rainfall days in December: 11.7 days
The month with the highest number of rainy days is May (22.8 days).
The month with the least rainy days is January (9.4 days).
Average snowfall in December
Fort Hill, PA
- Average snowfall in December: 5.16"
The month with the highest snowfall is January (7.44").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Fort Hill, PA
- Average snowfall days in December: 12.5 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
Fort Hill, PA
- Average daylight in December: 9h and 2min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in December: 3h and 4min
The months with the most sunshine are July and August (Average sunshine: 9h and 36min).
The month with the least sunshine is January (Average sunshine: 3h and 18min).
Average sunshine days in December
Fort Hill, PA
- Average sunshine days in December: 9.2 days
The months with the most sunshine days are October and November (12.5 days).
The month with the least sunshine days is May (6.2 days).
Average UV index in December
Fort Hill, 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, October, November and December (UV index 2).
Average cloud cover in December
Fort Hill, PA
- Average cloud cover in December: 65
The month with the most cloud cover is January (Cloud cover 69).
The month with the least cloud cover is August (Cloud cover 40).
Average visibility in December
Fort Hill, 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).
Fort Hill, Pennsylvania, USA
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