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
The shift from November to December includes a minor decrease in the average high-temperature, lightly dropping from a refreshing 65.8°F (18.8°C) to a moderate 60.1°F (15.6°C). Williams, in the month of December, anticipates a consistent average low-temperature of 44.1°F (6.7°C).Humidity
August and December, with an average relative humidity of 77%, are the most humid months.Rainfall
In Williams, in December, it is raining for 9 days, with typically 1.97" (50mm) of accumulated precipitation. Throughout the year, in Williams, South Carolina, there are 149.7 rainfall days, and 21.5" (546mm) of precipitation is accumulated.Snowfall
In Williams, snow does not fall in March through December.Daylight
December has the shortest days of the year, with an average of 10h and 0min of daylight.On the first day of the month, sunrise is at 7:08 am and sunset at 5:16 pm. On the last day of December, in Williams, sunrise is at 7:26 am and sunset at 5:27 pm EST.
Sunshine
The month with the least sunshine is December, with an average of 5.5h of sunshine.UV index
January and December, with an average maximum UV index of 3, are months with the lowest UV index in Williams. A UV Index value of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV rays for ordinary individuals.Note: In December, the maximum UV index of 3 suggests this advice:
Adopt protective measures - It is advised to guard against sun damage. Avoiding direct sunlight during midday hours helps reduce the risk from intense UV radiation. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes. Guard yourself! Snow reflection can almost double the UV radiation from the Sun.
Frequently asked questions
What are the temperatures in Williams in December?
What is the most humid month in Williams?
What is the average humidity in December in Williams?
How much does it rain in Williams in December?
When it does not snow in Williams?
Does it snow in Williams in December?
What is the month with the shortest days in Williams?
What is the average length of the day in December in Williams?
When are sunrise and sunset in December in Williams?
What is the month with the least sunshine in Williams?
How many hours of sunshine does Williams have in December?
What are the months with the lowest UV index in Williams?
What is the UV index intensity in December in Williams?
Average temperature in December
Williams, SC
- Average high temperature in December: 60.1°F
The warmest month (with the highest average high temperature) is July (91.8°F).
The month with the lowest average high temperature is January (56.1°F).
- Average low temperature in December: 44.1°F
The month with the highest average low temperature is July (73.4°F).
The coldest month (with the lowest average low temperature) is January (39.9°F).
Average pressure in December
Williams, SC
- Average pressure in December: 30.13"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.97"Hg).
Average wind speed in December
Williams, SC
- Average wind speed in December: 5.7mph
The windiest month (with the highest average wind speed) is April (6.7mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).
Average humidity in December
Williams, SC
- Average humidity in December: 77%
The months with the highest relative humidity are August and December (77%).
The months with the lowest relative humidity are January, March and November (72%).
Average rainfall in December
Williams, SC
- Average rainfall in December: 1.97"
The wettest month (with the highest rainfall) is August (3.15").
The driest month (with the least rainfall) is November (0.75").
Average rainfall days in December
Williams, SC
- Average rainfall days in December: 9 days
The month with the highest number of rainy days is July (21.1 days).
The month with the least rainy days is November (6.2 days).
Average snowfall in December
Williams, SC
- Average snowfall in December: 0"
The months with the highest snowfall are January and February (0.12").
The months with the least snowfall are March, April, May, June, July, August, September, October, November and December (0").
Average snowfall days in December
Williams, SC
- Average snowfall days in December: 0.1 days
The month with the highest number of snowfall days is January (0.4 days).
The months with the least snowfall days are April, May, June, July, August, September, October and November (0 days).
Average daylight in December /
Average sunshine in December
Williams, SC
- Average daylight in December: 10h and 0min
The month with the longest days is June (Average daylight: 14h and 18min).
The month with the shortest days is December (Average daylight: 10h and 0min).
- Average sunshine in December: 5h and 3min
The month with the most sunshine is July (Average sunshine: 10h and 54min).
The month with the least sunshine is December (Average sunshine: 5h and 30min).
Average sunshine days in December
Williams, SC
- Average sunshine days in December: 19.8 days
The month with the most sunshine days is November (21.1 days).
The month with the least sunshine days is July (6.9 days).
Average UV index in December
Williams, SC
- Average UV index in December: 3
The months with the highest UV index are June, July and August (UV index 7).
The months with the lowest UV index are January and December (UV index 3).
Average cloud cover in December
Williams, SC
- Average cloud cover in December: 42
The month with the most cloud cover is December (Cloud cover 42).
The months with the least cloud cover are July and October (Cloud cover 29).
Average visibility in December
Williams, SC
- Average visibility in December: 6mi
The months with the highest visibility are January, February, March, April, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is May (5mi).
Williams, South Carolina, USA
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