December weather forecast
James Crossroads, SC

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Weather in December

The first month of the winter, December, is still a refreshing month in James Crossroads, South Carolina, with an average temperature ranging between max 57.4°F (14.1°C) and min 42.3°F (5.7°C).

Temperature

As November makes way for December, James Crossroads's average high-temperature eases from an enjoyable 63°F (17.2°C) to a still refreshing 57.4°F (14.1°C). James Crossroads in December experiences a low-temperature average of 42.3°F (5.7°C).

Humidity

In December, the average relative humidity in James Crossroads is 76%.

Rainfall

The months with the most rainfall are August and December, with an average 3.23" (82mm) of precipitation.

Snowfall

Months with snowfall are January, February and December. December is the first month it typically snows. Throughout December, in the average 0.1 snowfall days, it receives 0.04" (1mm) of snow. Throughout the year, there are 1.2 snowfall days, and 0.47" (12mm) of snow is accumulated.

Daylight

The month with the shortest days is December, with an average of 10h and 0min of daylight.
On the first day of the month, sunrise is at 7:07 am and sunset at 5:12 pm. On the last day of December, sunrise is at 7:25 am and sunset at 5:23 pm EST.

Sunshine

The month with the least sunshine is December, with an average of 5.6h of sunshine.

UV index

The months with the lowest UV index are January, February and December, with an average maximum UV index of 3. A UV Index of 3 to 5 symbolizes a moderate threat to health from unsafe exposure to UV radiation for average individuals.
Note: During December, 3 as the daily maximum UV index converts into the following advice:
Be mindful. Individuals with a lighter skin tone may suffer burns in less than 30 minutes. Direct exposure to the Sun during its peak hours around mid-day should be minimized for safety. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck. Guard yourself! Snow reflection can almost double the UV radiation from the Sun.

Frequently asked questions

What is the usual temperature for James Crossroads in December?

During December, James Crossroads experiences an average high-temperature of 57.4°F (14.1°C) and a low-temperature of 42.3°F (5.7°C). The average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which combines air temperature and relative humidity, in September is calculated to be 93.2°F (34°C).

What is the average humidity in December?

The average relative humidity in December is 76%.

What is the rainiest month?

The months with the most rainfall are August and December, with an average 3.23" (82mm) of precipitation.

How many days does it rain in December?

In James Crossroads, during December, the rain falls for 10.7 days and regularly aggregates up to 3.23" (82mm) of precipitation.

When does it start to snow?

December is the first month it typically snows. Throughout December, in the average 0.1 snowfall days, it receives 0.04" (1mm) of snow.

What is the month with the shortest days?

December has the shortest days of the year, with an average of 10h and 0min of daylight.

What is the average length of the day in December?

In James Crossroads, the average day length in December is 9h and 58min.

When is the sunrise / sunset in December?

On the first day of December, sunrise is at 7:07 am and sunset at 5:12 pm. On the last day of the month, sunrise is at 7:25 am and sunset at 5:23 pm EST.

What is the month with the least sunshine?

The month with the least sunshine is December, with an average of 5.6h of sunshine.

How long on average sun shines in December?

In James Crossroads, the average sunshine duration in December is 5.6h.

When is the lowest UV index?

January, February and December, with an average maximum UV index of 3, are months with the lowest UV index.

How high is the UV index in December?

In December, the average daily maximum UV index is 3. A UV Index value of 3 to 5 symbolizes a medium hazard to health from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in December
James Crossroads, SC

Average temperature in December - James Crossroads, SC
  • Average high temperature in December: 57.4°F

The warmest month (with the highest average high temperature) is July (90.3°F).
The month with the lowest average high temperature is January (53.6°F).

  • Average low temperature in December: 42.3°F

The month with the highest average low temperature is July (73°F).
The coldest month (with the lowest average low temperature) is January (38.1°F).

Average pressure in December
James Crossroads, SC

Average pressure in December - James Crossroads, SC
  • Average pressure in December: 30.13"Hg

The months with the highest atmospheric pressure are January and November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.97"Hg).

Average wind speed in December
James Crossroads, SC

Average wind speed in December - James Crossroads, SC
  • Average wind speed in December: 6.8mph

The windiest month (with the highest average wind speed) is April (8.1mph).
The calmest month (with the lowest average wind speed) is August (5.6mph).

Average humidity in December
James Crossroads, SC

Average humidity in December - James Crossroads, SC
  • Average humidity in December: 76%

The month with the highest relative humidity is May (78%).
The months with the lowest relative humidity are January and November (72%).

Average rainfall in December
James Crossroads, SC

Average rainfall in December - James Crossroads, SC
  • Average rainfall in December: 3.23"

The wettest months (with the highest rainfall) are August and December (3.23").
The driest month (with the least rainfall) is January (1.65").

Average rainfall days in December
James Crossroads, SC

Average rainfall days in December - James Crossroads, SC
  • Average rainfall days in December: 10.7 days

The months with the highest number of rainy days are July and August (18.8 days).
The month with the least rainy days is November (8 days).

Average snowfall in December
James Crossroads, SC

Average snowfall in December - James Crossroads, SC
  • Average snowfall in December: 0.04"

The month with the highest snowfall is February (0.24").
The months with the least snowfall are March, April, May, June, July, August, September, October and November (0").

Average snowfall days in December
James Crossroads, SC

Average snowfall days in December - James Crossroads, SC
  • Average snowfall days in December: 0.1 days

The month with the highest number of snowfall days is January (0.6 days).
The months with the least snowfall days are March, April, May, June, July, August, September, October and November (0 days).

Average daylight in December /
Average sunshine in December
James Crossroads, SC

Average daylight in December / Average sunshine in December - James Crossroads, SC
  • Average daylight in December: 10h and 0min

The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 10h and 0min).

  • Average sunshine in December: 5h and 4min

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 36min).

Average sunshine days in December
James Crossroads, SC

Average sunshine days in December - James Crossroads, SC
  • Average sunshine days in December: 18.8 days

The month with the most sunshine days is November (20.5 days).
The month with the least sunshine days is July (9.2 days).

Average UV index in December
James Crossroads, SC

Average UV index in December - James Crossroads, SC
  • Average UV index in December: 3

The months with the highest UV index are June and July (UV index 7).
The months with the lowest UV index are January, February and December (UV index 3).

Average cloud cover in December
James Crossroads, SC

Average cloud cover in December - James Crossroads, SC
  • Average cloud cover in December: 40

The months with the most cloud cover are February and December (Cloud cover 40).
The month with the least cloud cover is October (Cloud cover 27).

Average visibility in December
James Crossroads, SC

Average visibility in December - James Crossroads, 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).

James Crossroads, South Carolina, USA

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