December weather forecast and climate
Altona, KY

The first month of the winter, December, is also a frosty month in Altona, Kentucky, with average temperature fluctuating between 46.4°F (8°C) and 34.2°F (1.2°C).

Temperature

In Altona, the average high-temperature in December drops, from a mild 55.4°F (13°C) in November, to a frosty 46.4°F (8°C). In December, in Altona, the average low-temperature is 34.2°F (1.2°C).

Humidity

In December, the average relative humidity in Altona is 78%.

Rainfall

In Altona, during 7.1 rainfall days, 0.63" (16mm) of precipitation is typically accumulated. In Altona, during the entire year, the rain falls for 94.8 days and collects up to 8.7" (221mm) of precipitation.

Snowfall

January through March, November and December are months with snowfall. In Altona, snow falls for 2.2 days, with typically accumulated 0.08" (2mm) of snow. Throughout the year, in Altona, Kentucky, there are 11 snowfall days, and 0.83" (21mm) of snow is accumulated.

Daylight

The month with the shortest days is December, with an average of 9.7h of daylight.

Sunshine

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

UV index

January, February and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index value of 2, and less, symbolizes a low health risk from unsafe exposure to the UV radiation for average individuals.
Note: In December, the average maximum UV index of 2 translate into the following recommendations:
Extended sun exposure is not an issue for the majority. Children, infants, and fair-skinned individuals always need to be protected. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.

What is the temperature in December in Altona?

The average high-temperature, in December, in Altona, is 46.4°F (8°C), while the average low-temperature is 34.2°F (1.2°C).

What is the average humidity in December in Altona?

In Altona, the average relative humidity in December is 78%.

How many days does it rain in December in Altona?

In Altona, in December, during 7.1 rainfall days, 0.63" (16mm) of precipitation is typically accumulated.

How many days does it snow in December in Altona?

In Altona, in December, during 2.2 snowfall days, 0.08" (2mm) of snow is typically accumulated.

What is the month with the shortest days in Altona?

With an average of 9.7h of daylight, December has the shortest days of the year.

How many hours of daylight does Altona have in December?

In Altona, the average length of the day in December is 9.7h.

How many hours of sunshine does Altona have in December?

In December, the average sunshine is 4.9h.

When is the lowest UV index in Altona?

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

What is the UV index intensity in December in Altona?

The average daily maximum UV index in December in Altona is 2. A UV Index estimate of 2, and below, represents a low health threat from the exposure to the Sun's UV rays.
Average temperature in December - Altona, KY
  • Average high temperature in December: 46.4°F

The warmest month (with the highest average high temperature) is July (88.3°F).
The month with the lowest average high temperature is January (41.7°F).

  • Average low temperature in December: 34.2°F

The month with the highest average low temperature is July (68.9°F).
The coldest month (with the lowest average low temperature) is January (28.8°F).

Average pressure in December - Altona, KY
  • Average pressure in December: 30.14"

The month with the highest atmospheric pressure is January (30.17").
The month with the lowest atmospheric pressure is June (29.95").

Average wind speed in December - Altona, KY
  • Average wind speed in December: 8.5mph

The windiest month (with the highest average wind speed) is April (9.1mph).
The calmest month (with the lowest average wind speed) is July (5.6mph).

Average humidity in December - Altona, KY
  • Average humidity in December: 78%

Months with the highest relative humidity are March and May (79%).
The month with the lowest relative humidity is October (71%).

Average rainfall in December - Altona, KY
  • Average rainfall in December: 0.63"

The wettest month (with the highest rainfall) is February (1.06").
The driest month (with the least rainfall) is September (0.28").

Average rainfall days in December - Altona, KY
  • Average rainfall days in December: 7.1 days

The month with the highest number of rainy days is July (10.7 days).
The month with the least rainy days is November (5.7 days).

Average snowfall in December - Altona, KY
  • Average snowfall in December: 0.08"

The month with the highest snowfall is February (0.28").
Months with the least snowfall are April, May, June, July, August, September and October (0").

Average snowfall days in December - Altona, KY
  • Average snowfall days in December: 2.2 days

The month with the highest number of snowfall days is February (3.1 days).
Months with the least snowfall days are May, June, July, August and September (0 days).

Average daylight in December / Average sunshine in December - Altona, KY
  • Average daylight in December: 9.7h

The month with the longest days is June (Average daylight: 14.7h).
The month with the shortest days is December (Average daylight: 9.7h).

  • Average sunshine in December: 4.9h

The month with the most sunshine is July (Average sunshine: 10.6h).
Months with the least sunshine are January and February (Average sunshine: 4.6).

Average sunshine days in December - Altona, KY
  • Average sunshine days in December: 22.4 days

The month with the most sunshine days is October (23.3 days).
The month with the least sunshine days is July (15.7 days).

Average UV index in December - Altona, KY
  • 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, February and December (UV index 2).

Average cloud cover in December - Altona, KY
  • Average cloud cover in December: 48

The month with the most cloud cover is February (Cloud cover 51).
Months with the least cloud cover are June and September (Cloud cover 28).

Average visibility in December - Altona, KY
  • 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).