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
In December, the meteorological conditions change slightly, with the average high-temperature moving from an enjoyable 61.7°F (16.5°C) in November to a mild 55.6°F (13.1°C). Throughout December, Hartsville encounters an average temperature drop to a wintry 41°F (5°C).Humidity
In December, the average relative humidity is 75%.Rainfall
In December, in Hartsville, the rain falls for 11.2 days. Throughout December, 3.15" (80mm) of precipitation is accumulated. In Hartsville, during the entire year, the rain falls for 154 days and collects up to 30.51" (775mm) of precipitation.Snowfall
January through March, November and December are months with snowfall. In Hartsville, in December, snow falls for 0.1 days, with typically accumulated 0.2" (5mm) of snow. Throughout the year, there are 1.4 snowfall days, and 1.57" (40mm) of snow is accumulated.Daylight
The month with the shortest days in Hartsville is December, with an average of 9h and 54min of daylight.On the first day of December in Hartsville, sunrise is at 7:08 am and sunset at 5:10 pm. On the last day of the month, sunrise is at 7:26 am and sunset at 5:20 pm EST.
Sunshine
January and December, with an average of 5.5h of sunshine, are months with the least sunshine in Hartsville, South Carolina.UV index
In December, the average daily maximum UV index is 3. A UV Index estimate of 3 to 5 represents a moderate health risk from unprotected exposure to Sun's UV rays for ordinary individuals.Note: A maximum daily UV index of 3 during December morphs into the following directions:
Exercise prevention - Protecting skin and eyes from harm is required. Stay safe from the Sun's strongest UV rays by limiting exposure during midday. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes. On your guard! Snow's reflection can almost double the intensity of the Sun's UV radiation.
Frequently asked questions
What are December temperatures in Hartsville?
What is the average humidity in December in Hartsville?
How many days does it rain in December in Hartsville?
How many days does it snow in December in Hartsville?
What is the month with the shortest days in Hartsville?
How many hours of daylight does Hartsville have in December?
When is the sunrise / sunset in December in Hartsville?
What is the month with the least sunshine in Hartsville?
How long on average sun shines in December in Hartsville?
What is the UV index intensity in December in Hartsville?
Average temperature in December
Hartsville, SC
- Average high temperature in December: 55.6°F
The warmest month (with the highest average high temperature) is July (89.6°F).
The month with the lowest average high temperature is January (51.8°F).
- Average low temperature in December: 41°F
The month with the highest average low temperature is July (72.5°F).
The coldest month (with the lowest average low temperature) is January (36.9°F).
Average pressure in December
Hartsville, SC
- Average pressure in December: 30.14"Hg
The months with the highest atmospheric pressure are January, November and December (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.97"Hg).
Average wind speed in December
Hartsville, SC
- Average wind speed in December: 7.1mph
The windiest month (with the highest average wind speed) is April (8.5mph).
The calmest month (with the lowest average wind speed) is August (5.5mph).
Average humidity in December
Hartsville, SC
- Average humidity in December: 75%
The months with the highest relative humidity are May and September (76%).
The months with the lowest relative humidity are January and November (71%).
Average rainfall in December
Hartsville, SC
- Average rainfall in December: 3.15"
The wettest month (with the highest rainfall) is May (3.19").
The driest month (with the least rainfall) is January (1.81").
Average rainfall days in December
Hartsville, SC
- Average rainfall days in December: 11.2 days
The month with the highest number of rainy days is July (17.8 days).
The month with the least rainy days is October (7.8 days).
Average snowfall in December
Hartsville, SC
- Average snowfall in December: 0.2"
The month with the highest snowfall is February (0.94").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in December
Hartsville, SC
- Average snowfall days in December: 0.1 days
The month with the highest number of snowfall days is February (0.7 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
Hartsville, SC
- Average daylight in December: 9h and 5min
The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 9h and 54min).
- Average sunshine in December: 5h and 3min
The month with the most sunshine is July (Average sunshine: 10h and 54min).
The months with the least sunshine are January and December (Average sunshine: 5h and 30min).
Average sunshine days in December
Hartsville, SC
- Average sunshine days in December: 18.4 days
The month with the most sunshine days is October (21.9 days).
The month with the least sunshine days is July (11 days).
Average UV index in December
Hartsville, SC
- Average UV index in December: 3
The months with the highest UV index are June and July (UV index 7).
The month with the lowest UV index is January (UV index 2).
Average cloud cover in December
Hartsville, SC
- Average cloud cover in December: 41
The months with the most cloud cover are February and December (Cloud cover 41).
The months with the least cloud cover are June and October (Cloud cover 29).
Average visibility in December
Hartsville, SC
- Average visibility in December: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Hartsville, South Carolina, USA
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