December weather forecast
Grover, SC

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Weather in December

The first month of the winter, December, is still a mild month in Grover, South Carolina, with an average temperature fluctuating between 43.2°F (6.2°C) and 59°F (15°C).

Temperature

December's arrival comes with a mild decrease in the average high-temperature, moving subtly from an enjoyable 65.1°F (18.4°C) in November to a still refreshing 59°F (15°C). An average temperature of 43.2°F (6.2°C) marks the nights in December.

Humidity

May, August, September and December, with an average relative humidity of 77%, are the most humid months in Grover.

Rainfall

In Grover, in December, it is raining for 9.7 days, with typically 2.2" (56mm) of accumulated precipitation. In Grover, South Carolina, during the entire year, the rain falls for 151.2 days and collects up to 23.46" (596mm) of precipitation.

Snowfall

March through December are months without snowfall in Grover.

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 7:08 am and sunset at 5:15 pm. On the last day of December, sunrise is at 7:25 am and sunset at 5:25 pm EST.

Sunshine

December has the least sunshine of the year in Grover, 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 Grover. A UV Index value of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV rays for ordinary individuals.
Note: The UV index of 3 in December translates into these instructions:
Guard yourself - Avoiding sunburn is suggested. The Sun's radiation is especially intense around midday; try to stay in shade during this period. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized. Mark this! Snow reflection can nearly double the UV radiation intensity from the Sun.
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Frequently asked questions

What are December temperatures in Grover?

In December, the average high-temperature and low-temperature in Grover are 59°F (15°C) and 43.2°F (6.2°C) respectively. The average heat index (a.k.a. 'real feel', 'felt air temperature'), which combines relative humidity and air temperature, in September is evaluated at 95°F (35°C).

What is the most humid month in Grover?

May, August, September and December, with an average relative humidity of 77%, are most humid months.

What is the average humidity in December in Grover?

The average relative humidity in December in Grover, South Carolina, is 77%.

How many days does it rain in December in Grover?

In Grover, in December, it is raining for 9.7 days, with typically 2.2" (56mm) of accumulated precipitation.

When it does not snow in Grover?

In Grover, South Carolina, snow does not fall in March through December.

Does it snow in Grover in December?

In Grover, South Carolina, in December, it doesn't snow. In January, it regularly snows.

What is the month with the shortest days in Grover?

The month with the shortest days is December, with an average of 10h and 0min of daylight.

What is the average length of the day in December in Grover?

The average day length in December in Grover is 10h and 1min.

What time are sunrise and sunset in December in Grover?

In December, on the first day of the month, sunrise is at 7:08 am and sunset at 5:15 pm. On the last day of the month, in Grover, South Carolina, sunrise is at 7:25 am and sunset at 5:25 pm EST.

What is the month with the least sunshine in Grover?

The month with the least sunshine in Grover is December, with an average of 5.5h of sunshine.

How many hours of sunshine does Grover have in December?

The average sunshine duration in December in Grover is 5.5h.

What are the months with the lowest UV index in Grover?

January and December, with an average maximum UV index of 3, are months with the lowest UV index in Grover, South Carolina.

What is the UV index intensity in December in Grover?

In December, the average daily maximum UV index in Grover is 3. A UV Index reading of 3 to 5 represents a moderate health threat from unsafe 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
Grover, SC

Average temperature in December - Grover, SC
  • Average high temperature in December: 59°F

The warmest month (with the highest average high temperature) is July (91.2°F).
The month with the lowest average high temperature is January (55.2°F).

  • Average low temperature in December: 43.2°F

The month with the highest average low temperature is July (73.2°F).
The coldest month (with the lowest average low temperature) is January (38.8°F).

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Average pressure in December
Grover, SC

Average pressure in December - Grover, 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).

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Average wind speed in December
Grover, SC

Average wind speed in December - Grover, SC
  • Average wind speed in December: 6.1mph

The windiest month (with the highest average wind speed) is April (7.1mph).
The calmest month (with the lowest average wind speed) is August (5mph).

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Average humidity in December
Grover, SC

Average humidity in December - Grover, SC
  • Average humidity in December: 77%

The months with the highest relative humidity are May, August, September and December (77%).
The month with the lowest relative humidity is January (72%).

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Average rainfall in December
Grover, SC

Average rainfall in December - Grover, SC
  • Average rainfall in December: 2.2"

The wettest month (with the highest rainfall) is August (3.15").
The driest month (with the least rainfall) is November (0.91").

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Average rainfall days in December
Grover, SC

Average rainfall days in December - Grover, SC
  • Average rainfall days in December: 9.7 days

The month with the highest number of rainy days is August (19.5 days).
The month with the least rainy days is November (6.8 days).

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Average snowfall in December
Grover, SC

Average snowfall in December - Grover, SC
  • Average snowfall in December: 0"

The months with the highest snowfall are January and February (0.16").
The months with the least snowfall are March, April, May, June, July, August, September, October, November and December (0").

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Average snowfall days in December
Grover, SC

Average snowfall days in December - Grover, SC
  • Average snowfall days in December: 0.2 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).

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Average daylight in December /
Average sunshine in December
Grover, SC

Average daylight in December / Average sunshine in December - Grover, 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 48min).
The month with the least sunshine is December (Average sunshine: 5h and 30min).

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Average sunshine days in December
Grover, SC

Average sunshine days in December - Grover, SC
  • Average sunshine days in December: 19.7 days

The month with the most sunshine days is November (21.5 days).
The month with the least sunshine days is August (8.7 days).

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Average UV index in December
Grover, SC

Average UV index in December - Grover, 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).

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Average cloud cover in December
Grover, SC

Average cloud cover in December - Grover, SC
  • Average cloud cover in December: 42

The month with the most cloud cover is December (Cloud cover 42).
The month with the least cloud cover is October (Cloud cover 29).

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Average visibility in December
Grover, SC

Average visibility in December - Grover, 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).

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Grover, South Carolina, USA

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