December weather forecast and climate
Calera, AL

Weather in December

December, the first month of the winter, in Calera, is also a fresh month, with average temperature varying between 55.2°F (12.9°C) and 40.5°F (4.7°C).

Temperature

In Calera, the average high-temperature in December marginally drops, from an enjoyable 62.8°F (17.1°C) in November, to a fresh 55.2°F (12.9°C). The average low-temperature, is 40.5°F (4.7°C).

Humidity

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

Rainfall

In Calera, Alabama, during December, the rain falls for 11.2 days and regularly aggregates up to 2.01" (51mm) of precipitation. Throughout the year, in Calera, there are 148.8 rainfall days, and 23.11" (587mm) of precipitation is accumulated.

Snowfall

January, February and December are months with snowfall. The month with the most snowfall is December when snow falls for 0.5 days and typically aggregates up to 0.47" (12mm) of snow.

Daylight

With an average of 10h of daylight, December has the shortest days of the year.

Sunshine

February and December, with an average of 4.9h of sunshine, are months with the least sunshine.

UV index

Months with the lowest UV index are January, February and December, with an average maximum UV index of 3. A UV Index value of 3 to 5 symbolizes a moderate health risk from unprotected exposure to the Sun's UV rays for average individuals.
Note: The average daily UV index of 3 transform into the following instructions:
Take precautions - Protection against sunburn is recommended. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. 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 Calera?

In December, in Calera, Alabama, the average high-temperature is 55.2°F (12.9°C), and the average low-temperature is 40.5°F (4.7°C).

What is the most humid month in Calera?

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

What is the average humidity in December in Calera?

The average relative humidity in December is 80%.

How much does it rain in Calera in December?

In Calera, during December, the rain falls for 11.2 days and regularly aggregates up to 2.01" (51mm) of precipitation.

When does it start to snow in Calera?

December is the first month it typically snows in Calera, Alabama. Throughout December, in the average 0.5 snowfall days, it receives 0.47" (12mm) of snow.

What is the snowiest month in Calera?

The month with the most snowfall in Calera is December when snow falls for 0.5 days and typically aggregates up to 0.47" (12mm) of snow.

What is the month with the shortest days in Calera?

December has the shortest days of the year in Calera, Alabama, with an average of 10h of daylight.

How many hours of daylight does Calera have in December?

The average length of the day in December in Calera, Alabama, is 10h.

What is the month with the least sunshine in Calera?

Months with the least sunshine in Calera are February and December, with an average of 4.9h of sunshine.

How long on average sun shines in December in Calera?

In December, the average sunshine in Calera is 4.9h.

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

Months with the lowest UV index in Calera are January, February and December, with an average maximum UV index of 3.

What is the UV index reading in December in Calera?

In December, the average daily maximum UV index in Calera is 3. A UV Index estimate of 3 to 5 represents a moderate vulnerability from the exposure to the Sun's UV rays.

Average temperature in December
Calera, AL

Average temperature in December - Calera, AL
  • Average high temperature in December: 55.2°F

The warmest month (with the highest average high temperature) is July (90.3°F).
The month with the lowest average high temperature is January (51.4°F).

  • Average low temperature in December: 40.5°F

The month with the highest average low temperature is August (71.2°F).
The coldest month (with the lowest average low temperature) is January (36.3°F).

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Average pressure in December
Calera, AL

Average pressure in December - Calera, AL
  • Average pressure in December: 30.14"

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

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Average wind speed in December
Calera, AL

Average wind speed in December - Calera, AL
  • Average wind speed in December: 7.1mph

The windiest months (with the highest average wind speed) are January, February and March (7.3mph).
The calmest months (with the lowest average wind speed) are July and August (4.4mph).

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Average humidity in December
Calera, AL

Average humidity in December - Calera, 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 (71%).

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Average rainfall in December
Calera, AL

Average rainfall in December - Calera, AL
  • Average rainfall in December: 2.01"

The wettest month (with the highest rainfall) is August (2.52").
The driest months (with the least rainfall) are September and October (1.26").

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Average rainfall days in December
Calera, AL

Average rainfall days in December - Calera, AL
  • Average rainfall days in December: 11.2 days

The month with the highest number of rainy days is July (19.7 days).
The month with the least rainy days is November (6.7 days).

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Average snowfall in December
Calera, AL

Average snowfall in December - Calera, AL
  • Average snowfall in December: 0.47"

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

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Average snowfall days in December
Calera, AL

Average snowfall days in December - Calera, AL
  • Average snowfall days in December: 0.5 days

The month with the highest number of snowfall days is January (1 days).
Months with the least snowfall days are April, May, June, July, August, September and October (0 days).

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Average daylight in December /
Average sunshine in December
Calera, AL

Average daylight in December / Average sunshine in December - Calera, AL
  • Average daylight in December: 10h

The month with the longest days is June (Average daylight: 14.3h).
The month with the shortest days is December (Average daylight: 10h).

  • Average sunshine in December: 4.9h

Months with the most sunshine are June and July (Average sunshine: 10.6h).
Months with the least sunshine are February and December (Average sunshine: 4.9).

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Average sunshine days in December
Calera, AL

Average sunshine days in December - Calera, AL
  • Average sunshine days in December: 17.5 days

The month with the most sunshine days is November (21.9 days).
The month with the least sunshine days is July (9 days).

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Average UV index in December
Calera, AL

Average UV index in December - Calera, AL
  • Average UV index in December: 3

The month with the highest UV index is June (UV index 7).
Months with the lowest UV index are January, February and December (UV index 3).

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Average cloud cover in December
Calera, AL

Average cloud cover in December - Calera, AL
  • Average cloud cover in December: 46

The month with the most cloud cover is February (Cloud cover 47).
The month with the least cloud cover is September (Cloud cover 29).

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Average visibility in December
Calera, AL

Average visibility in December - Calera, 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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