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 indicates a minor shift in the average high-temperature, from November's moderate 58.6°F (14.8°C) to a fresh 52.2°F (11.2°C). In Siler City, an average nighttime temperature of 36.9°F (2.7°C) is expected during December.Humidity
With an average relative humidity of 77%, December is the most humid month.Rainfall
In Siler City, during December, the rain falls for 10.8 days and regularly aggregates up to 2.6" (66mm) of precipitation. In Siler City, during the entire year, the rain falls for 156.8 days and collects up to 30.51" (775mm) of precipitation.Snowfall
January through March, November and December are months with snowfall. In Siler City, in December, during 0.5 snowfall days, 1.65" (42mm) of snow is typically accumulated. In Siler City, during the entire year, snow falls for 5.9 days and aggregates up to 6.22" (158mm) of snow.Daylight
With an average of 9h and 48min of daylight, December has the shortest days of the year.On the first day of the month, sunrise is at 7:09 am and sunset at 5:04 pm. On the last day of December, in Siler City, sunrise is at 7:27 am and sunset at 5:14 pm EST.
Sunshine
The months with the least sunshine are January and December, with an average of 5.5h of sunshine.UV index
In Siler City, the average daily maximum UV index in December is 3. A UV Index of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV radiation for the ordinary person.Note: In December, the maximum UV index of 3 transforms into these recommendations:
Proceed with care. Light skin individuals may be exposed to burns in fewer than 30 minutes. The Sun's radiation is especially intense around midday; try to stay in shade during this period. Boost your sun resistance with garments that are densely woven yet spacious. Be aware! The intensity of the Sun's UV radiation can be amplified nearly twice due to snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures 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 Siler City have in December?
What time are sunrise and sunset in December?
What is the month with the least sunshine?
How many hours of sunshine does Siler City have in December?
What is the UV index reading in December?
Average temperature in December
Siler City, NC
- Average high temperature in December: 52.2°F
The warmest month (with the highest average high temperature) is July (90.1°F).
The month with the lowest average high temperature is January (47.8°F).
- Average low temperature in December: 36.9°F
The month with the highest average low temperature is July (69.4°F).
The coldest month (with the lowest average low temperature) is January (31.8°F).
Average pressure in December
Siler City, NC
- Average pressure in December: 30.14"Hg
The month with the highest atmospheric pressure is November (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.97"Hg).
Average wind speed in December
Siler City, NC
- Average wind speed in December: 5.8mph
The windiest month (with the highest average wind speed) is April (7.1mph).
The calmest month (with the lowest average wind speed) is August (4.7mph).
Average humidity in December
Siler City, NC
- Average humidity in December: 77%
The month with the highest relative humidity is December (77%).
The month with the lowest relative humidity is July (71%).
Average rainfall in December
Siler City, NC
- Average rainfall in December: 2.6"
The wettest month (with the highest rainfall) is May (3.43").
The driest month (with the least rainfall) is October (1.85").
Average rainfall days in December
Siler City, NC
- Average rainfall days in December: 10.8 days
The month with the highest number of rainy days is August (17.3 days).
The month with the least rainy days is November (8.8 days).
Average snowfall in December
Siler City, NC
- Average snowfall in December: 1.65"
The month with the highest snowfall is January (1.97").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in December
Siler City, NC
- Average snowfall days in December: 0.5 days
The month with the highest number of snowfall days is February (2.3 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight in December /
Average sunshine in December
Siler City, NC
- Average daylight in December: 9h and 5min
The month with the longest days is June (Average daylight: 14h and 30min).
The month with the shortest days is December (Average daylight: 9h and 48min).
- Average sunshine in December: 5h and 3min
The month with the most sunshine is July (Average sunshine: 10h and 42min).
The months with the least sunshine are January and December (Average sunshine: 5h and 30min).
Average sunshine days in December
Siler City, NC
- Average sunshine days in December: 18.8 days
The months with the most sunshine days are October and November (20.5 days).
The month with the least sunshine days is July (11.8 days).
Average UV index in December
Siler City, NC
- Average UV index in December: 3
The months with the highest UV index are May, June, July and August (UV index 6).
The month with the lowest UV index is January (UV index 2).
Average cloud cover in December
Siler City, NC
- Average cloud cover in December: 42
The months with the most cloud cover are February, March and December (Cloud cover 42).
The month with the least cloud cover is June (Cloud cover 31).
Average visibility in December
Siler City, NC
- 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).
Siler City, North Carolina, USA
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