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
Setting in of December comes with a decrease in the average high-temperature, moving from a frosty 45.1°F (7.3°C) in November to an icy 35.4°F (1.9°C). An average low-temperature of 26.2°F (-3.2°C) is recorded in the month of December in Spartansburg.Humidity
The average relative humidity in December is 88%.Rainfall
In Spartansburg, in December, it is raining for 9.7 days, with typically 3.31" (84mm) of accumulated precipitation. Throughout the year, there are 176.8 rainfall days, and 37.36" (949mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, October through December. The month with the most snowfall is December, when snow falls for 18.5 days and typically aggregates up to 12.01" (305mm) of snow.Daylight
With an average of 9h and 12min of daylight, December has the shortest days of the year.On the first day of the month, sunrise is at 7:27 am and sunset at 4:48 pm. On the last day of December, sunrise is at 7:46 am and sunset at 4:58 pm EST.
Sunshine
In Spartansburg, the average sunshine in December is 2.2h.UV index
The months with the lowest UV index are January and December, with an average maximum UV index of 1. A UV Index reading of 2, and below, represents a minimal health hazard from unsafe exposure to UV radiation for ordinary individuals.Note: In December, a daily maximum UV index of 1 leads to the following instructions:
Most individuals face no major issues with lengthy exposure to the sun, but children, infants, and individuals with fair skin always require protection. Sun exposure should be minimized, especially during midday, to avoid harmful UV radiation. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage. Be on the lookout! Nearly twofold UV radiation from the Sun can be reflected by snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is December?
What is the average humidity in December?
How many days does it rain in December?
When does it snow the most in Spartansburg?
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 many hours of sunshine does Spartansburg have in December?
What are the months with the lowest UV index?
What is the UV index intensity in December?
Average temperature in December
Spartansburg, PA
- Average high temperature in December: 35.4°F
The warmest month (with the highest average high temperature) is July (77.5°F).
The month with the lowest average high temperature is January (29.3°F).
- Average low temperature in December: 26.2°F
The month with the highest average low temperature is July (59.5°F).
The coldest month (with the lowest average low temperature) is January (18.3°F).
Average pressure in December
Spartansburg, 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 (29.93"Hg).
Average wind speed in December
Spartansburg, PA
- Average wind speed in December: 9.6mph
The windiest month (with the highest average wind speed) is January (10.2mph).
The calmest month (with the lowest average wind speed) is July (6mph).
Average humidity in December
Spartansburg, PA
- Average humidity in December: 88%
The month with the highest relative humidity is February (90%).
The month with the lowest relative humidity is May (80%).
Average rainfall in December
Spartansburg, PA
- Average rainfall in December: 3.31"
The wettest month (with the highest rainfall) is April (3.58").
The driest month (with the least rainfall) is September (2.64").
Average rainfall days in December
Spartansburg, PA
- Average rainfall days in December: 9.7 days
The month with the highest number of rainy days is July (19.3 days).
The month with the least rainy days is January (7.5 days).
Average snowfall in December
Spartansburg, PA
- Average snowfall in December: 12.01"
The month with the highest snowfall is December (12.01").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Spartansburg, PA
- Average snowfall days in December: 18.5 days
The month with the highest number of snowfall days is January (21.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Spartansburg, PA
- Average daylight in December: 9h and 1min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in December: 2h and 1min
The month with the most sunshine is July (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 2h and 0min).
Average sunshine days in December
Spartansburg, PA
- Average sunshine days in December: 6.9 days
The month with the most sunshine days is October (10.9 days).
The month with the least sunshine days is January (5.4 days).
Average UV index in December
Spartansburg, 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
Spartansburg, PA
- Average cloud cover in December: 77
The month with the most cloud cover is January (Cloud cover 80).
The months with the least cloud cover are July and August (Cloud cover 36).
Average visibility in December
Spartansburg, PA
- Average visibility in December: 4mi
The month with the highest visibility is October (6mi).
The months with the lowest visibility are January, February and December (4mi).
Spartansburg, Pennsylvania, USA
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