December weather forecast and climate
Penn, AL

Weather in December

December, the first month of the winter, in Penn, is still a cool month, with average temperature fluctuating between 52.5°F (11.4°C) and 38.3°F (3.5°C).

Temperature

In Penn, the average high-temperature slightly decreases, from a moderate 59.9°F (15.5°C) in November, to a fresh 52.5°F (11.4°C). The average low-temperature, in Penn, is 38.3°F (3.5°C).

Humidity

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

Rainfall

December is the month with the most rainfall. Rain falls for 13.5 days and accumulates 4.25" (108mm) of precipitation.

Snowfall

Months with snowfall are January through March, November and December. In December, it is snowing for 1.4 days. Throughout December, 0.31" (8mm) of snow is accumulated. Throughout the year, there are 6.8 snowfall days, and 1.97" (50mm) of snow is accumulated.

Daylight

The month with the shortest days is December, with an average of 9.9h of daylight.

Sunshine

In Penn, the average sunshine is 4.7h.

UV index

Months with the lowest UV index in Penn are January and December, with an average maximum UV index of 2. A UV Index reading of 2, and below, represents a low threat to health from the exposure to the Sun's UV radiation for ordinary individuals.
Note: The average daily UV index of 2 transform into the following instructions:
Extended sun exposure is not an issue for the majority. Children, infants, and fair-skinned individuals always need to be protected. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
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FAQ

What is the temperature in December in Penn?

In Penn, in December, the average high-temperature is 52.5°F (11.4°C), and the average low-temperature is 38.3°F (3.5°C).

What is the most humid month in Penn?

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

What is the average humidity in December in Penn?

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

How many days does it rain in December in Penn?

In Penn, during December, the rain falls for 13.5 days and regularly aggregates up to 4.25" (108mm) of precipitation.

What is the rainiest month in Penn?

The month with the most rainfall in Penn, Alabama, is December when the rain falls for 13.5 days and typically aggregates up to 4.25" (108mm) of precipitation.

How many days does it snow in December in Penn?

In Penn, Alabama, in December, during 1.4 snowfall days, 0.31" (8mm) of snow is typically accumulated.

What is the month with the shortest days in Penn?

The month with the shortest days is December, with an average of 9.9h of daylight.

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

In December, the average length of the day in Penn, Alabama, is 9.9h.

How many hours of sunshine does Penn have in December?

In Penn, Alabama, the average sunshine in December is 4.7h.

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

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

What is the UV index reading in December in Penn?

The average daily maximum UV index in December is 2. A UV Index of 2, and less, symbolizes a minimal health vulnerability from unprotected exposure to the UV radiation.

Average temperature in December
Penn, AL

Average temperature in December - Penn, AL
  • Average high temperature in December: 52.5°F

The warmest month (with the highest average high temperature) is July (89.1°F).
The month with the lowest average high temperature is January (48.7°F).

  • Average low temperature in December: 38.3°F

The month with the highest average low temperature is July (69.6°F).
The coldest month (with the lowest average low temperature) is January (33.6°F).

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Average pressure in December
Penn, AL

Average pressure in December - Penn, AL
  • Average pressure in December: 30.15"

The month with the highest atmospheric pressure is January (30.17").
The month with the lowest atmospheric pressure is June (29.98").

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Average wind speed in December
Penn, AL

Average wind speed in December - Penn, AL
  • Average wind speed in December: 7.8mph

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 (4.8mph).

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Average humidity in December
Penn, AL

Average humidity in December - Penn, AL
  • Average humidity in December: 79%

The month with the highest relative humidity is December (79%).
The month with the lowest relative humidity is October (72%).

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Average rainfall in December
Penn, AL

Average rainfall in December - Penn, AL
  • Average rainfall in December: 4.25"

The wettest month (with the highest rainfall) is December (4.25").
The driest month (with the least rainfall) is November (2.24").

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Average rainfall days in December
Penn, AL

Average rainfall days in December - Penn, AL
  • Average rainfall days in December: 13.5 days

The month with the highest number of rainy days is July (19.5 days).
The month with the least rainy days is November (9.7 days).

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Average snowfall in December
Penn, AL

Average snowfall in December - Penn, AL
  • Average snowfall in December: 0.31"

The month with the highest snowfall is January (0.79").
Months with the least snowfall are April, May, June, July, August, September and October (0").

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Average snowfall days in December
Penn, AL

Average snowfall days in December - Penn, AL
  • Average snowfall days in December: 1.4 days

The month with the highest number of snowfall days is February (2.1 days).
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
Penn, AL

Average daylight in December / Average sunshine in December - Penn, AL
  • Average daylight in December: 9.9h

The month with the longest days is June (Average daylight: 14.4h).
The month with the shortest days is December (Average daylight: 9.9h).

  • Average sunshine in December: 4.7h

The month with the most sunshine is June (Average sunshine: 10.5h).
The month with the least sunshine is February (Average sunshine: 4.6h).

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Average sunshine days in December
Penn, AL

Average sunshine days in December - Penn, AL
  • Average sunshine days in December: 15.4 days

The month with the most sunshine days is October (19.4 days).
The month with the least sunshine days is July (9.3 days).

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Average UV index in December
Penn, AL

Average UV index in December - Penn, AL
  • Average UV index in December: 2

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

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Average cloud cover in December
Penn, AL

Average cloud cover in December - Penn, AL
  • Average cloud cover in December: 49

The month with the most cloud cover is February (Cloud cover 50).
The month with the least cloud cover is June (Cloud cover 30).

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Average visibility in December
Penn, AL

Average visibility in December - Penn, AL
  • Average visibility in December: 6mi

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

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