December weather forecast and climate
Harpersville, AL

Weather in December

The first month of the winter, December, is also a fresh month in Harpersville, Alabama, with average temperature fluctuating between 40.1°F (4.5°C) and 54.5°F (12.5°C).

Temperature

In Harpersville, Alabama, the average high-temperature slightly decreases, from an enjoyable 62.1°F (16.7°C) in November, to a fresh 54.5°F (12.5°C). In Harpersville, in December, the average low-temperature is 40.1°F (4.5°C).

Humidity

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

Rainfall

In December, the rain falls for 13.8 days. Throughout December, 3.98" (101mm) of precipitation is accumulated. Throughout the year, there are 177.1 rainfall days, and 41.06" (1043mm) of precipitation is accumulated.

Snowfall

January through March, November and December are months with snowfall. In Harpersville, snow falls for 0.5 days, with typically accumulated 0.47" (12mm) of snow. In Harpersville, during the entire year, snow falls for 3.5 days, and aggregates up to 1.77" (45mm) of snow.

Daylight

The month with the shortest days in Harpersville is December, with an average of 10h of daylight.

Sunshine

In Harpersville, the average sunshine is 4.9h.

UV index

Months with the lowest UV index in Harpersville are January, February and December, with an average maximum UV index of 3. A UV Index reading of 3 to 5 represents a moderate threat to health from the exposure to the Sun's UV radiation for average individuals.
Note: The daily maximum UV index of 3 in December interpret into the following advice:
Take precautions. Light skin individuals may get burned in less than 30 minutes. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. 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 Harpersville?

The average high-temperature, in December, in Harpersville, is 54.5°F (12.5°C), while the average low-temperature is 40.1°F (4.5°C).

What is the most humid month in Harpersville?

The most humid month in Harpersville is December, with an average relative humidity of 80%.

What is the average humidity in December in Harpersville?

In December, the average relative humidity in Harpersville is 80%.

How many days does it rain in December in Harpersville?

In Harpersville, Alabama, in December, it is raining for 13.8 days, with typically 3.98" (101mm) of accumulated precipitation.

How many days does it snow in December in Harpersville?

In Harpersville, in December, snow falls for 0.5 days, with typically accumulated 0.47" (12mm) of snow.

What is the month with the shortest days in Harpersville?

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

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

In December, the average length of the day in Harpersville, Alabama, is 10h.

How long on average sun shines in December in Harpersville?

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

When is the lowest UV index in Harpersville?

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

How high is the UV index in December in Harpersville?

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

Average temperature in December
Harpersville, AL

Average temperature in December - Harpersville, AL
  • Average high temperature in December: 54.5°F

The warmest month (with the highest average high temperature) is July (90.1°F).
The month with the lowest average high temperature is January (50.9°F).

  • Average low temperature in December: 40.1°F

The month with the highest average low temperature is July (70.2°F).
The coldest month (with the lowest average low temperature) is January (35.2°F).

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Average pressure in December
Harpersville, AL

Average pressure in December - Harpersville, 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
Harpersville, AL

Average wind speed in December - Harpersville, AL
  • Average wind speed in December: 7mph

The windiest month (with the highest average wind speed) is February (7.4mph).
The calmest months (with the lowest average wind speed) are July and August (4.2mph).

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Average humidity in December
Harpersville, AL

Average humidity in December - Harpersville, 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
Harpersville, AL

Average rainfall in December - Harpersville, AL
  • Average rainfall in December: 3.98"

The wettest month (with the highest rainfall) is August (4.13").
The driest month (with the least rainfall) is October (2.28").

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Average rainfall days in December
Harpersville, AL

Average rainfall days in December - Harpersville, AL
  • Average rainfall days in December: 13.8 days

The month with the highest number of rainy days is July (21.7 days).
The month with the least rainy days is November (8.4 days).

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Average snowfall in December
Harpersville, AL

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

The month with the highest snowfall is January (0.83").
Months with the least snowfall are April, May, June, July, August, September and October (0").

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Average snowfall days in December
Harpersville, AL

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

Months with the highest number of snowfall days are January and February (1.3 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
Harpersville, AL

Average daylight in December / Average sunshine in December - Harpersville, 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: 10.5h).
The month with the least sunshine is February (Average sunshine: 4.8h).

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Average sunshine days in December
Harpersville, AL

Average sunshine days in December - Harpersville, AL
  • Average sunshine days in December: 15.1 days

The month with the most sunshine days is October (19.3 days).
The month with the least sunshine days is July (6.9 days).

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Average UV index in December
Harpersville, AL

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

Months with the highest UV index are May, June, July and August (UV index 6).
Months with the lowest UV index are January, February and December (UV index 3).

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Average cloud cover in December
Harpersville, AL

Average cloud cover in December - Harpersville, AL
  • Average cloud cover in December: 47

The month with the most cloud cover is February (Cloud cover 48).
Months with the least cloud cover are June, September and October (Cloud cover 31).

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Average visibility in December
Harpersville, AL

Average visibility in December - Harpersville, 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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