Contents
- Weather in December
- Frequently asked questions
- Average temperature in December
- Average pressure in December
- Average wind speed in December
- Average humidity in December
- Average rainfall in December
- Average rainfall days in December
- Average snowfall in December
- Average snowfall days in December
- Average daylight in December
- Average sunshine in December
- Average sunshine days in December
- Average UV index in December
- Average cloud cover in December
- Average visibility in December
Weather in December
Temperature
The beginning of December brings a minor change in the average high-temperature, shifting from a comfortable 61.9°F (16.6°C) in November to a cool 54.5°F (12.5°C). During December, Irondale records a consistent average nighttime temperature of 39.9°F (4.4°C).Humidity
With an average relative humidity of 79%, December is the most humid month.Rainfall
In Irondale, during December, the rain falls for 10.6 days and regularly aggregates up to 1.89" (48mm) of precipitation. In Irondale, during the entire year, the rain falls for 143.1 days and collects up to 18.58" (472mm) of precipitation.Snowfall
Months with snowfall are January through March, November and December. In Irondale, in December, snow falls for 0.4 days, with typically accumulated 0.08" (2mm) of snow. Throughout the year, in Irondale, there are 2.5 snowfall days, and 0.35" (9mm) of snow is accumulated.Daylight
December has the shortest days of the year, with an average of 10h and 0min of daylight.On the first day of December, sunrise is at 6:33 am and sunset at 4:38 pm. On the last day of the month, sunrise is at 6:50 am and sunset at 4:49 pm CST.
Sunshine
In December, the average sunshine is 4.9h.UV index
December is the month with the lowest UV index in Irondale, Alabama, with an average maximum UV index of 2. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from unsafe exposure to UV radiation for the average person.Note: The maximum daily UV index of 2 in December converts into the following recommendations:
Protection from prolonged sun exposure is necessary for babies, children, and individuals with sensitive skin. The midday Sun can be dangerous due to its intense radiation; always find shade and reduce exposure. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation. Mind you! Snow reflection can increase the intensity of the Sun's UV radiation nearly twofold.
Frequently asked questions
What is the temperature in December in Irondale?
What is the most humid month in Irondale?
What is the average humidity in December in Irondale?
How many days does it rain in December in Irondale?
How many days does it snow in December in Irondale?
What is the month with the shortest days in Irondale?
What is the average length of the day in December in Irondale?
What time are sunrise and sunset in December in Irondale?
How many hours of sunshine does Irondale have in December?
What is the month with the lowest UV index in Irondale?
How high is the UV index in December in Irondale?
Average temperature in December
Irondale, AL
- Average high temperature in December: 54.5°F
The warmest month (with the highest average high temperature) is July (91°F).
The month with the lowest average high temperature is January (50.7°F).
- Average low temperature in December: 39.9°F
The month with the highest average low temperature is July (71.1°F).
The coldest month (with the lowest average low temperature) is January (35.2°F).
Average pressure in December
Irondale, 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
Irondale, 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 (4.5mph).
Average humidity in December
Irondale, 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 (71%).
Average rainfall in December
Irondale, AL
- Average rainfall in December: 1.89"
The wettest month (with the highest rainfall) is June (1.97").
The driest month (with the least rainfall) is November (1.02").
Average rainfall days in December
Irondale, AL
- Average rainfall days in December: 10.6 days
The month with the highest number of rainy days is July (17.6 days).
The month with the least rainy days is November (7.9 days).
Average snowfall in December
Irondale, AL
- Average snowfall in December: 0.08"
The month with the highest snowfall is January (0.12").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in December
Irondale, AL
- Average snowfall days in December: 0.4 days
The months with the highest number of snowfall days are January and February (0.8 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight in December /
Average sunshine in December
Irondale, AL
- Average daylight in December: 10h and 0min
The month with the longest days is June (Average daylight: 14h and 18min).
The month with the shortest days is December (Average daylight: 10h and 0min).
- Average sunshine in December: 4h and 5min
The month with the most sunshine is July (Average sunshine: 10h and 42min).
The month with the least sunshine is February (Average sunshine: 4h and 42min).
Average sunshine days in December
Irondale, AL
- Average sunshine days in December: 17.5 days
The month with the most sunshine days is October (20.9 days).
The month with the least sunshine days is July (11.1 days).
Average UV index in December
Irondale, AL
- Average UV index in December: 2
The months with the highest UV index are July and August (UV index 7).
The month with the lowest UV index is December (UV index 2).
Average cloud cover in December
Irondale, AL
- Average cloud cover in December: 47
The month with the most cloud cover is February (Cloud cover 48).
The months with the least cloud cover are June and September (Cloud cover 30).
Average visibility in December
Irondale, AL
- Average visibility in December: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Irondale, Alabama, USA
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