December weather forecast
Gillises Mills, TN

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Weather in December

The first month of the winter, December, is still a cool month in Gillises Mills, Tennessee, with an average temperature fluctuating between 37.4°F (3°C) and 50.4°F (10.2°C).

Temperature

The average high-temperature slightly decreases in December, shifting from a mild 58.6°F (14.8°C) in November to a cool 50.4°F (10.2°C). Gillises Mills records a mean low-temperature of 37.4°F (3°C) in December.

Humidity

March and December, with an average relative humidity of 80%, are the most humid months.

Rainfall

In December, the rain falls for 13.2 days. Throughout December, 2.99" (76mm) of precipitation is accumulated. In Gillises Mills, during the entire year, the rain falls for 166.9 days and collects up to 37.32" (948mm) of precipitation.

Snowfall

Months with snowfall are January through March, November and December. In Gillises Mills, in December, during 0.6 snowfall days, 0.04" (1mm) of snow is typically accumulated. In Gillises Mills, during the entire year, snow falls for 5.8 days and aggregates up to 1.5" (38mm) of snow.

Daylight

December has the shortest days of the year in Gillises Mills, with an average of 9h and 48min of daylight.
On the first day of December in Gillises Mills, Tennessee, sunrise is at 6:42 am and sunset at 4:40 pm. On the last day of the month, sunrise is at 7:00 am and sunset at 4:50 pm CST.

Sunshine

In Gillises Mills, the average sunshine in December is 4.7h.

UV index

The month with the lowest UV index in Gillises Mills is December, with an average maximum UV index of 2. A UV Index value of 2, and less, symbolizes a low health risk from exposure to the Sun's UV rays for the ordinary person.
Note: A daily maximum UV index of 2 in December translates into the following instructions:
Most individuals face no major issues with lengthy exposure to the sun, but children, infants, and individuals with fair skin always require protection. The Sun's radiation is especially intense around midday; try to stay in shade during this period. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
Updated: Feb 14, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the temperature in December in Gillises Mills?

Gillises Mills in December has an average high-temperature of 50.4°F (10.2°C) and an average low-temperature of 37.4°F (3°C). The average heat index (a.k.a. 'feels like', 'felt air temperature'), which factors the actual air temperature with the relative humidity, in September is evaluated at 89.6°F (32°C).

What is the most humid month in Gillises Mills?

The months with the highest humidity are March and December, with an average relative humidity of 80%.

What is the average humidity in December in Gillises Mills?

The average relative humidity in December is 80%.

How much does it rain in Gillises Mills in December?

In Gillises Mills, during December, the rain falls for 13.2 days and regularly aggregates up to 2.99" (76mm) of precipitation.

How many days does it snow in December in Gillises Mills?

In Gillises Mills, in December, snow falls for 0.6 days, with typically accumulated 0.04" (1mm) of snow.

What is the month with the shortest days in Gillises Mills?

The month with the shortest days in Gillises Mills is December, with an average of 9h and 48min of daylight.

What is the average length of the day in December in Gillises Mills?

The average day length in December in Gillises Mills, Tennessee, is 9h and 50min.

When are sunrise and sunset in December in Gillises Mills?

In December, on the first day of the month, sunrise is at 6:42 am and sunset at 4:40 pm. On the last day of the month, in Gillises Mills, Tennessee, sunrise is at 7:00 am and sunset at 4:50 pm CST.

How many hours of sunshine does Gillises Mills have in December?

In Gillises Mills, Tennessee, the average sunshine duration in December is 4.7h.

What is the month with the lowest UV index in Gillises Mills?

The month with the lowest UV index in Gillises Mills is December, with an average maximum UV index of 2.

How high is the UV index in December in Gillises Mills?

In Gillises Mills, the average daily maximum UV index in December is 2. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV radiation.
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
Gillises Mills, TN

Average temperature in December - Gillises Mills, TN
  • Average high temperature in December: 50.4°F

The warmest month (with the highest average high temperature) is July (89.2°F).
The month with the lowest average high temperature is January (46.9°F).

  • Average low temperature in December: 37.4°F

The month with the highest average low temperature is July (69.4°F).
The coldest month (with the lowest average low temperature) is January (32.5°F).

Average pressure in December
Gillises Mills, TN

Average pressure in December - Gillises Mills, TN
  • Average pressure in December: 30.14"Hg

The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.96"Hg).

Average wind speed in December
Gillises Mills, TN

Average wind speed in December - Gillises Mills, TN
  • Average wind speed in December: 7.5mph

The windiest month (with the highest average wind speed) is February (8mph).
The calmest month (with the lowest average wind speed) is July (4.6mph).

Average humidity in December
Gillises Mills, TN

Average humidity in December - Gillises Mills, TN
  • Average humidity in December: 80%

The months with the highest relative humidity are March and December (80%).
The month with the lowest relative humidity is October (73%).

Average rainfall in December
Gillises Mills, TN

Average rainfall in December - Gillises Mills, TN
  • Average rainfall in December: 2.99"

The wettest month (with the highest rainfall) is February (4.41").
The driest month (with the least rainfall) is September (2.05").

Average rainfall days in December
Gillises Mills, TN

Average rainfall days in December - Gillises Mills, TN
  • Average rainfall days in December: 13.2 days

The month with the highest number of rainy days is July (17.8 days).
The month with the least rainy days is November (9.8 days).

Average snowfall in December
Gillises Mills, TN

Average snowfall in December - Gillises Mills, TN
  • Average snowfall in December: 0.04"

The month with the highest snowfall is February (0.47").
The months with the least snowfall are April, May, June, July, August, September and October (0").

Average snowfall days in December
Gillises Mills, TN

Average snowfall days in December - Gillises Mills, TN
  • Average snowfall days in December: 0.6 days

The month with the highest number of snowfall days is February (2.1 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
Gillises Mills, TN

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

The month with the longest days is June (Average daylight: 14h and 30min).
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 30min).
The month with the least sunshine is February (Average sunshine: 4h and 36min).

Average sunshine days in December
Gillises Mills, TN

Average sunshine days in December - Gillises Mills, TN
  • Average sunshine days in December: 16.4 days

The month with the most sunshine days is October (19.1 days).
The month with the least sunshine days is July (10.9 days).

Average UV index in December
Gillises Mills, TN

Average UV index in December - Gillises Mills, TN
  • Average UV index in December: 2

The months with the highest UV index are June and July (UV index 7).
The month with the lowest UV index is December (UV index 2).

Average cloud cover in December
Gillises Mills, TN

Average cloud cover in December - Gillises Mills, TN
  • Average cloud cover in December: 50

The months with the most cloud cover are February and December (Cloud cover 50).
The month with the least cloud cover is June (Cloud cover 28).

Average visibility in December
Gillises Mills, TN

Average visibility in December - Gillises Mills, TN
  • Average visibility in December: 6mi

The months with the highest visibility are January, February, March, April, June, August, September, October, November and December (6mi).
The months with the lowest visibility are May and July (5mi).

Gillises Mills, Tennessee, USA

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