December weather forecast
Grassland, TN

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Weather in December

The first month of the winter, December, is also a frosty month in Grassland, Tennessee, with an average temperature ranging between max 49.1°F (9.5°C) and min 36°F (2.2°C).

Temperature

A subtle change in temperatures is noted as November gives way to December, with average highs reducing from a mild 57.4°F (14.1°C) to a chilly 49.1°F (9.5°C). During the nights in December, Grassland observes an average low-temperature of 36°F (2.2°C).

Humidity

With an average relative humidity of 79%, December is the most humid month in Grassland, Tennessee.

Rainfall

In December, the rain falls for 12.7 days. Throughout December, 3.11" (79mm) of precipitation is accumulated. In Grassland, during the entire year, the rain falls for 176.6 days and collects up to 38.94" (989mm) of precipitation.

Snowfall

January through April, October through December are months with snowfall. In Grassland, during December, snow falls for 2.2 days and regularly aggregates up to 0.47" (12mm) of snow. In Grassland, during the entire year, snow falls for 11.4 days and aggregates up to 3.35" (85mm) of snow.

Daylight

With an average of 9h and 48min of daylight, December has the shortest days of the year.
On the first day of the month, sunrise is at 6:40 am and sunset at 4:33 pm. On the last day of December, sunrise is at 6:57 am and sunset at 4:43 pm CST.

Sunshine

In December, the average sunshine in Grassland is 4.7h.

UV index

January and December, with an average maximum UV index of 2, are months with the lowest UV index in Grassland. A UV Index of 2, and less, symbolizes a low threat to health from unsafe exposure to UV radiation for ordinary individuals.
Note: In December, the maximum UV index of 2 suggests these recommendations:
Prolonged sun exposure should always be prevented in babies, children, and those with sensitive skin. Midday is when the Sun's radiation is strongest; avoid prolonged exposure during this time. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays. Be aware! The reflective nature of snow can magnify the Sun's UV radiation almost twofold.
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Frequently asked questions

What is the usual temperature for Grassland in December?

Grassland in December has an average high-temperature of 49.1°F (9.5°C) and an average low-temperature of 36°F (2.2°C). In September, the average heat index (a.k.a. 'real feel', 'apparent temperature'), which combines air temperature and relative humidity, is estimated at 86°F (30°C).

What is the most humid month in Grassland?

December is the most humid month, with an average relative humidity of 79%.

What is the average humidity in December in Grassland?

In December, the average relative humidity in Grassland is 79%.

How many days does it rain in December in Grassland?

In Grassland, during December, the rain falls for 12.7 days and regularly aggregates up to 3.11" (79mm) of precipitation.

How much does it snow in Grassland in December?

In December, it is snowing for 2.2 days. Throughout December, 0.47" (12mm) of snow is accumulated.

What is the month with the shortest days in Grassland?

With an average of 9h and 48min of daylight, December has the shortest days of the year in Grassland.

How many hours of daylight does Grassland have in December?

In Grassland, Tennessee, the average day length in December is 9h and 46min.

When is the sunrise / sunset in December in Grassland?

On the first day of December, sunrise is at 6:40 am and sunset at 4:33 pm. On the last day of the month, sunrise is at 6:57 am and sunset at 4:43 pm CST.

How many hours of sunshine does Grassland have in December?

The average sunshine duration in December is 4.7h.

When is the lowest UV index in Grassland?

The months with the lowest UV index in Grassland, Tennessee, are January and December, with an average maximum UV index of 2.

How high is the UV index in December in Grassland?

The average daily maximum UV index in December in Grassland, Tennessee, is 2. A UV Index estimate of 2, and below, represents a low health threat from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in December
Grassland, TN

Average temperature in December - Grassland, TN
  • Average high temperature in December: 49.1°F

The warmest month (with the highest average high temperature) is July (88°F).
The month with the lowest average high temperature is January (45.1°F).

  • Average low temperature in December: 36°F

The month with the highest average low temperature is July (69.3°F).
The coldest month (with the lowest average low temperature) is January (30.9°F).

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Average pressure in December
Grassland, TN

Average pressure in December - Grassland, TN
  • Average pressure in December: 30.15"Hg

The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.97"Hg).

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Average wind speed in December
Grassland, TN

Average wind speed in December - Grassland, TN
  • Average wind speed in December: 7.6mph

The windiest month (with the highest average wind speed) is February (8.3mph).
The calmest months (with the lowest average wind speed) are July and August (4.6mph).

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Average humidity in December
Grassland, TN

Average humidity in December - Grassland, TN
  • Average humidity in December: 79%

The month with the highest relative humidity is December (79%).
The months with the lowest relative humidity are October and November (74%).

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Average rainfall in December
Grassland, TN

Average rainfall in December - Grassland, TN
  • Average rainfall in December: 3.11"

The wettest month (with the highest rainfall) is July (4.37").
The driest months (with the least rainfall) are September and November (2.36").

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Average rainfall days in December
Grassland, TN

Average rainfall days in December - Grassland, TN
  • Average rainfall days in December: 12.7 days

The month with the highest number of rainy days is July (20.3 days).
The month with the least rainy days is November (10 days).

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Average snowfall in December
Grassland, TN

Average snowfall in December - Grassland, TN
  • Average snowfall in December: 0.47"

The month with the highest snowfall is February (1.22").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in December
Grassland, TN

Average snowfall days in December - Grassland, TN
  • Average snowfall days in December: 2.2 days

The month with the highest number of snowfall days is February (3.9 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

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Average daylight in December /
Average sunshine in December
Grassland, TN

Average daylight in December / Average sunshine in December - Grassland, TN
  • Average daylight in December: 9h and 5min

The month with the longest days is June (Average daylight: 14h and 36min).
The month with the shortest days is December (Average daylight: 9h and 48min).

  • Average sunshine in December: 4h and 4min

The month with the most sunshine is June (Average sunshine: 10h and 24min).
The month with the least sunshine is February (Average sunshine: 4h and 30min).

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Average sunshine days in December
Grassland, TN

Average sunshine days in December - Grassland, TN
  • Average sunshine days in December: 15.2 days

The month with the most sunshine days is November (18.2 days).
The month with the least sunshine days is July (9.2 days).

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Average UV index in December
Grassland, TN

Average UV index in December - Grassland, TN
  • Average UV index in December: 2

The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January and December (UV index 2).

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Average cloud cover in December
Grassland, TN

Average cloud cover in December - Grassland, TN
  • Average cloud cover in December: 51

The month with the most cloud cover is February (Cloud cover 53).
The month with the least cloud cover is June (Cloud cover 29).

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Average visibility in December
Grassland, TN

Average visibility in December - Grassland, TN
  • 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).

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Grassland, Tennessee, USA

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