December weather forecast
Rock Mills, AL

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Weather in December

The first month of the winter, December, is still a cool month in Rock Mills, Alabama, with an average temperature fluctuating between 55.2°F (12.9°C) and 40.3°F (4.6°C).

Temperature

The onset of December results in a small decrease in the average high-temperature, moderately receding from a refreshing 61.9°F (16.6°C) in November to a cool 55.2°F (12.9°C). The average low-temperature, in December, in Rock Mills, is a wintry 40.3°F (4.6°C).

Humidity

December is the most humid month in Rock Mills, with an average relative humidity of 80%.

Rainfall

In December, in Rock Mills, the rain falls for 14 days. Throughout December, 3.74" (95mm) of precipitation is accumulated. Throughout the year, in Rock Mills, Alabama, there are 181.7 rainfall days, and 39.06" (992mm) of precipitation is accumulated.

Snowfall

Months with snowfall in Rock Mills, Alabama, are January through March and December. December is the first month it typically snows. Throughout December, in the average 0.6 snowfall days, it receives 0.35" (9mm) of snow. Throughout the year, in Rock Mills, there are 3.5 snowfall days, and 1.18" (30mm) of snow is accumulated.

Daylight

With an average of 10h and 0min of daylight, December has the shortest days of the year in Rock Mills.
On the first day of December in Rock Mills, sunrise is at 6:26 am and sunset at 4:33 pm. On the last day of the month, sunrise is at 6:44 am and sunset at 4:44 pm CST.

Sunshine

February and December, with an average of 5h of sunshine, are months with the least sunshine in Rock Mills.

UV index

January, February, November and December, with an average maximum UV index of 3, are months with the lowest UV index in Rock Mills. A UV Index value of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV radiation for ordinary individuals.
Note: In December, the maximum UV index of 3 transforms into these recommendations:
Take necessary precautions - Defending against sun damage is advocated. The midday Sun can be dangerous due to its intense radiation; always find shade and reduce exposure. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes. Take to heart! Snow reflection can almost magnify the Sun's UV radiation twofold.
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Frequently asked questions

What is the average December temperature in Rock Mills?

In December, the average high-temperature and low-temperature in Rock Mills are 55.2°F (12.9°C) and 40.3°F (4.6°C) respectively. In September, the average heat index (a.k.a. 'felt air temperature', 'feels like'), which calculates the temperature value influenced by the moisture in the air, is calculated to be 91.4°F (33°C).

What is the most humid month in Rock Mills?

December is the most humid month in Rock Mills, with an average relative humidity of 80%.

What is the average humidity in December in Rock Mills?

In December, the average relative humidity is 80%.

How much does it rain in Rock Mills in December?

In December, in Rock Mills, Alabama, the rain falls for 14 days. Throughout December, 3.74" (95mm) of precipitation is accumulated.

When does it start snowing in Rock Mills?

December is the first month it typically snows. Throughout December, in the average 0.6 snowfall days, it receives 0.35" (9mm) of snow.

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

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

How many hours of daylight does Rock Mills have in December?

The average day length in December in Rock Mills is 10h and 0min.

When are sunrise and sunset in December in Rock Mills?

In December, on the first day of the month, sunrise is at 6:26 am and sunset at 4:33 pm. On the last day of the month, in Rock Mills, sunrise is at 6:44 am and sunset at 4:44 pm CST.

What are the months with the least sunshine in Rock Mills?

The months with the least sunshine in Rock Mills, Alabama, are February and December, with an average of 5h of sunshine.

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

In December, the average sunshine duration is 5h.

What are the months with the lowest UV index in Rock Mills?

January, February, November and December, with an average maximum UV index of 3, are months with the lowest UV index in Rock Mills, Alabama.

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

In Rock Mills, Alabama, the average daily maximum UV index in December is 3. A UV Index estimate of 3 to 5 represents a moderate vulnerability from unprotected exposure to 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
Rock Mills, AL

Average temperature in December - Rock Mills, AL
  • Average high temperature in December: 55.2°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 (52°F).

  • Average low temperature in December: 40.3°F

The month with the highest average low temperature is July (70°F).
The coldest month (with the lowest average low temperature) is January (35.4°F).

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Average pressure in December
Rock Mills, AL

Average pressure in December - Rock Mills, AL
  • 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 (29.98"Hg).

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Average wind speed in December
Rock Mills, AL

Average wind speed in December - Rock Mills, AL
  • Average wind speed in December: 7.2mph

The windiest month (with the highest average wind speed) is January (7.6mph).
The calmest months (with the lowest average wind speed) are July and August (4.4mph).

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Average humidity in December
Rock Mills, AL

Average humidity in December - Rock Mills, AL
  • Average humidity in December: 80%

The month with the highest relative humidity is December (80%).
The month with the lowest relative humidity is October (72%).

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Average rainfall in December
Rock Mills, AL

Average rainfall in December - Rock Mills, AL
  • Average rainfall in December: 3.74"

The wettest month (with the highest rainfall) is August (4.06").
The driest month (with the least rainfall) is October (1.93").

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Average rainfall days in December
Rock Mills, AL

Average rainfall days in December - Rock Mills, AL
  • Average rainfall days in December: 14 days

The month with the highest number of rainy days is July (22.7 days).
The month with the least rainy days is November (8.5 days).

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Average snowfall in December
Rock Mills, AL

Average snowfall in December - Rock Mills, AL
  • Average snowfall in December: 0.35"

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

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Average snowfall days in December
Rock Mills, AL

Average snowfall days in December - Rock Mills, AL
  • Average snowfall days in December: 0.6 days

The month with the highest number of snowfall days is January (1.3 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

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Average daylight in December /
Average sunshine in December
Rock Mills, AL

Average daylight in December / Average sunshine in December - Rock Mills, AL
  • 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 0min

The months with the most sunshine are June and July (Average sunshine: 10h and 30min).
The months with the least sunshine are February and December (Average sunshine: 5h and 0min).

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Average sunshine days in December
Rock Mills, AL

Average sunshine days in December - Rock Mills, AL
  • Average sunshine days in December: 15.5 days

The month with the most sunshine days is October (20.5 days).
The month with the least sunshine days is July (7.5 days).

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Average UV index in December
Rock Mills, AL

Average UV index in December - Rock Mills, AL
  • Average UV index in December: 3

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, February, November and December (UV index 3).

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Average cloud cover in December
Rock Mills, AL

Average cloud cover in December - Rock Mills, AL
  • Average cloud cover in December: 47

The month with the most cloud cover is December (Cloud cover 47).
The month with the least cloud cover is October (Cloud cover 31).

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Average visibility in December
Rock Mills, AL

Average visibility in December - Rock Mills, AL
  • Average visibility in December: 6mi

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

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Rock Mills, Alabama, USA

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