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
A moderate decline in average high-temperatures is noted in Simpsonville, South Carolina, in December, moving from a moderate 60.1°F (15.6°C) in November to a cool 52.9°F (11.6°C). Simpsonville throughout December, records an average low-temperature of 38.5°F (3.6°C).Humidity
With an average relative humidity of 77%, December is the most humid month in Simpsonville, South Carolina.Rainfall
The month with the most rainfall in Simpsonville is December, when the rain falls for 11.7 days and typically aggregates up to 4.09" (104mm) of precipitation.Snowfall
Months with snowfall in Simpsonville are January through March, November and December. December is the month with the most snowfall in Simpsonville, South Carolina. Snow falls for 0.5 days and accumulates 1.69" (43mm) of snow.Daylight
The month with the shortest days in Simpsonville is December, with an average of 9h and 54min of daylight.On the first day of December in Simpsonville, sunrise is at 7:18 am and sunset at 5:18 pm. On the last day of the month, sunrise is at 7:36 am and sunset at 5:28 pm EST.
Sunshine
The month with the least sunshine in Simpsonville is December, with an average of 5.4h of sunshine.UV index
In December, the average daily maximum UV index in Simpsonville, South Carolina, is 3. A UV Index of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV rays for average individuals.Note: In December, the UV index of 3 transforms into the following advice:
Safety measures are advised. Light-skinned individuals may experience burns in under half an hour. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit. Be attentive! The reflective property of snow can nearly double the Sun's UV radiation.
Frequently asked questions
What is the average December temperature in Simpsonville?
What is the most humid month in Simpsonville?
What is the average humidity in December in Simpsonville?
What is the rainiest month in Simpsonville?
How much does it rain in Simpsonville in December?
When does it snow the most in Simpsonville?
How much does it snow in Simpsonville in December?
What is the month with the shortest days in Simpsonville?
What is the average length of the day in December in Simpsonville?
When are sunrise and sunset in December in Simpsonville?
What is the month with the least sunshine in Simpsonville?
How many hours of sunshine does Simpsonville have in December?
What is the UV index reading in December in Simpsonville?
Average temperature in December
Simpsonville, SC
- Average high temperature in December: 52.9°F
The warmest month (with the highest average high temperature) is July (90.5°F).
The month with the lowest average high temperature is January (49.6°F).
- Average low temperature in December: 38.5°F
The month with the highest average low temperature is July (69.1°F).
The coldest month (with the lowest average low temperature) is January (33.6°F).
Average pressure in December
Simpsonville, SC
- 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 (29.98"Hg).
Average wind speed in December
Simpsonville, SC
- Average wind speed in December: 6.2mph
The windiest month (with the highest average wind speed) is April (7mph).
The calmest month (with the lowest average wind speed) is August (4.5mph).
Average humidity in December
Simpsonville, SC
- Average humidity in December: 77%
The month with the highest relative humidity is December (77%).
The month with the lowest relative humidity is July (69%).
Average rainfall in December
Simpsonville, SC
- Average rainfall in December: 4.09"
The wettest month (with the highest rainfall) is December (4.09").
The driest month (with the least rainfall) is September (1.65").
Average rainfall days in December
Simpsonville, SC
- Average rainfall days in December: 11.7 days
The month with the highest number of rainy days is August (17.9 days).
The month with the least rainy days is October (9.6 days).
Average snowfall in December
Simpsonville, SC
- Average snowfall in December: 1.69"
The month with the highest snowfall is December (1.69").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in December
Simpsonville, SC
- Average snowfall days in December: 0.5 days
The months with the highest number of snowfall days are January and February (1.4 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
Simpsonville, 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 2min
The month with the most sunshine is July (Average sunshine: 11h and 6min).
The month with the least sunshine is December (Average sunshine: 5h and 24min).
Average sunshine days in December
Simpsonville, SC
- Average sunshine days in December: 17.6 days
The month with the most sunshine days is October (20.5 days).
The month with the least sunshine days is July (10.7 days).
Average UV index in December
Simpsonville, SC
- 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
Simpsonville, SC
- Average cloud cover in December: 41
The months with the most cloud cover are February, March and December (Cloud cover 41).
The month with the least cloud cover is June (Cloud cover 27).
Average visibility in December
Simpsonville, 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).
Simpsonville, South Carolina, USA
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