December weather forecast
Cornwall Furnace, AL

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Weather in December

The first month of the winter, December, is still a cool month in Cornwall Furnace, Alabama, with an average temperature ranging between min 38.3°F (3.5°C) and max 52.5°F (11.4°C).

Temperature

Cornwall Furnace's progression into December involves a minor drop in the average high-temperature, slightly receding from a mild 60.3°F (15.7°C) in November to a cool 52.5°F (11.4°C). Nighttime temperatures hover around an average low of 38.3°F (3.5°C) in December.

Humidity

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

Rainfall

The wettest months are February and December, with an average 4.06" (103mm) of rainfall.

Snowfall

January through March, November and December are months with snowfall in Cornwall Furnace. In Cornwall Furnace, during December, snow falls for 0.7 days and regularly aggregates up to 0.47" (12mm) of snow. In Cornwall Furnace, during the entire year, snow falls for 4.5 days and aggregates up to 2.05" (52mm) of snow.

Daylight

With an average of 9h and 54min of daylight, December has the shortest days of the year.
On the first day of December, sunrise is at 6:30 am and sunset at 4:32 pm. On the last day of the month, sunrise is at 6:48 am and sunset at 4:43 pm CST.

Sunshine

In Cornwall Furnace, the average sunshine in December is 4.9h.

UV index

January and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index of 2, and less, symbolizes a low threat to health from exposure to the Sun's UV rays for the average person.
Note: A maximum high UV index of 2 in December translates into the following recommendations:
Long-term sun exposure is typically not a concern for most. However, those with sensitive skin, infants, and children must always have protection. To avoid the Sun's strongest rays, limit exposure around the mid-day period. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
Updated: Aug 26, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the average December temperature?

December temperatures vary between a high-temperature of 52.5°F (11.4°C) and a low-temperature of 38.3°F (3.5°C). The average heat index (a.k.a. 'real feel', 'apparent temperature'), which combines air temperature and relative humidity, in September is evaluated at 89.6°F (32°C).

What is the most humid month?

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

What is the average humidity in December in Cornwall Furnace?

The average relative humidity in December is 80%.

What is the rainiest month?

The wettest months are February and December, with an average 4.06" (103mm) of rainfall.

How many days does it rain in December?

In December, the rain falls for 13.9 days. Throughout December, 4.06" (103mm) of precipitation is accumulated.

How many days does it snow in December?

In Cornwall Furnace, in December, during 0.7 snowfall days, 0.47" (12mm) of snow is typically accumulated.

What is the month with the shortest days in Cornwall Furnace?

With an average of 9h and 54min of daylight, December has the shortest days of the year.

How many hours of daylight does Cornwall Furnace have in December?

The average day length in December is 9h and 55min.

When are sunrise and sunset in December?

On the first day of December, sunrise is at 6:30 am and sunset at 4:32 pm. On the last day of the month, sunrise is at 6:48 am and sunset at 4:43 pm CST.

How many hours of sunshine does Cornwall Furnace have in December?

In Cornwall Furnace, the average sunshine duration in December is 4.9h.

What are the months with the lowest UV index?

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?

The average daily maximum UV index in December is 2. A UV Index estimate of 2, and below, represents a minimal health 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
Cornwall Furnace, AL

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

The warmest month (with the highest average high temperature) is July (88.7°F).
The month with the lowest average high temperature is January (48.9°F).

  • Average low temperature in December: 38.3°F

The month with the highest average low temperature is July (68.5°F).
The coldest month (with the lowest average low temperature) is January (33.4°F).

Average pressure in December
Cornwall Furnace, AL

Average pressure in December - Cornwall Furnace, 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).

Average wind speed in December
Cornwall Furnace, AL

Average wind speed in December - Cornwall Furnace, AL
  • Average wind speed in December: 6.6mph

The windiest month (with the highest average wind speed) is February (7.3mph).
The calmest month (with the lowest average wind speed) is August (4.1mph).

Average humidity in December
Cornwall Furnace, AL

Average humidity in December - Cornwall Furnace, 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 (74%).

Average rainfall in December
Cornwall Furnace, AL

Average rainfall in December - Cornwall Furnace, AL
  • Average rainfall in December: 4.06"

The wettest months (with the highest rainfall) are February and December (4.06").
The driest month (with the least rainfall) is October (2.56").

Average rainfall days in December
Cornwall Furnace, AL

Average rainfall days in December - Cornwall Furnace, AL
  • Average rainfall days in December: 13.9 days

The month with the highest number of rainy days is July (21.1 days).
The month with the least rainy days is November (9.8 days).

Average snowfall in December
Cornwall Furnace, AL

Average snowfall in December - Cornwall Furnace, AL
  • Average snowfall in December: 0.47"

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

Average snowfall days in December
Cornwall Furnace, AL

Average snowfall days in December - Cornwall Furnace, AL
  • Average snowfall days in December: 0.7 days

The month with the highest number of snowfall days is February (1.4 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

Average daylight in December /
Average sunshine in December
Cornwall Furnace, AL

Average daylight in December / Average sunshine in December - Cornwall Furnace, AL
  • Average daylight in December: 9h and 5min

The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 9h and 54min).

  • Average sunshine in December: 4h and 5min

The months with the most sunshine are June and July (Average sunshine: 10h and 36min).
The month with the least sunshine is February (Average sunshine: 4h and 48min).

Average sunshine days in December
Cornwall Furnace, AL

Average sunshine days in December - Cornwall Furnace, AL
  • Average sunshine days in December: 15.7 days

The month with the most sunshine days is October (19.1 days).
The month with the least sunshine days is July (8 days).

Average UV index in December
Cornwall Furnace, AL

Average UV index in December - Cornwall Furnace, AL
  • Average UV index in December: 2

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 and December (UV index 2).

Average cloud cover in December
Cornwall Furnace, AL

Average cloud cover in December - Cornwall Furnace, AL
  • Average cloud cover in December: 47

The month with the most cloud cover is February (Cloud cover 48).
The month with the least cloud cover is June (Cloud cover 30).

Average visibility in December
Cornwall Furnace, AL

Average visibility in December - Cornwall Furnace, AL
  • Average visibility in December: 5mi

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

Cornwall Furnace, Alabama, USA

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