December weather forecast
Ironton, PA

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Weather in December

December, the first month of the winter in Ironton, is also a wintry month, with temperature in the range of an average low of 28.9°F (-1.7°C) and an average high of 40.1°F (4.5°C).

Temperature

December's arrival coincides with a drop in the average high-temperature, decreasing from November's frosty 49.1°F (9.5°C) to a cold 40.1°F (4.5°C). In December, the average low-temperature records at a freezing cold 28.9°F (-1.7°C) during the nights.

Humidity

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

Rainfall

In Ironton, in December, during 12.1 rainfall days, 2.87" (73mm) of precipitation is typically accumulated. Throughout the year, in Ironton, there are 162.5 rainfall days, and 31.69" (805mm) of precipitation is accumulated.

Snowfall

January through May, October through December are months with snowfall in Ironton. In Ironton, during December, snow falls for 5.5 days and regularly aggregates up to 2.95" (75mm) of snow. Throughout the year, there are 32.3 snowfall days, and 17.24" (438mm) of snow is accumulated.

Daylight

With an average of 9h and 18min of daylight, December has the shortest days of the year in Ironton, Pennsylvania.
On the first day of the month, sunrise is at 7:07 am and sunset at 4:35 pm. On the last day of December, sunrise is at 7:25 am and sunset at 4:45 pm EST.

Sunshine

The average sunshine in December is 4.7h.

UV index

The months with the lowest UV index in Ironton are January through March, November and December, with an average maximum UV index of 2. A UV Index value of 2, and less, symbolizes a minimal health hazard from unprotected exposure to Sun's UV rays for the average person.
Note: The average daily UV index of 2 in December transforms into the following instructions:
Babies, children, and individuals with sensitive skin should always have protection against extended sun exposure. Minimize direct exposure to the Sun during midday when its radiation is at its peak. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration. Take heed! The reflection of snow can intensify the Sun's UV radiation nearly double.
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Frequently asked questions

How cold is December in Ironton?

The high-temperature, in December, in Ironton, records 40.1°F (4.5°C), while the low-temperature is 28.9°F (-1.7°C). In August, the average heat index (a.k.a. 'apparent temperature', 'real feel'), which calculates the temperature value influenced by the moisture in the air, is appraised at 86°F (30°C).

What is the average humidity in December in Ironton?

The average relative humidity in December in Ironton is 80%.

How much does it rain in Ironton in December?

In December, the rain falls for 12.1 days. Throughout December, 2.87" (73mm) of precipitation is accumulated.

How many days does it snow in December in Ironton?

In Ironton, during December, snow falls for 5.5 days and regularly aggregates up to 2.95" (75mm) of snow.

What is the month with the shortest days in Ironton?

The month with the shortest days in Ironton is December, with an average of 9h and 18min of daylight.

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

The average day length in December in Ironton is 9h and 19min.

When is the sunrise / sunset in December in Ironton?

On the first day of December in Ironton, sunrise is at 7:07 am and sunset at 4:35 pm. On the last day of the month, sunrise is at 7:25 am and sunset at 4:45 pm EST.

How long on average sun shines in December in Ironton?

In December, the average sunshine duration is 4.7h.

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

The months with the lowest UV index in Ironton, Pennsylvania, are January through March, November and December, with an average maximum UV index of 2.

How high is the UV index in December in Ironton?

In December, the average daily maximum UV index in Ironton is 2. A UV Index of 2, and less, symbolizes a low health risk 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
Ironton, PA

Average temperature in December - Ironton, PA
  • Average high temperature in December: 40.1°F

The warmest month (with the highest average high temperature) is July (83.3°F).
The month with the lowest average high temperature is January (33.8°F).

  • Average low temperature in December: 28.9°F

The month with the highest average low temperature is July (63.3°F).
The coldest month (with the lowest average low temperature) is January (21.6°F).

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Average pressure in December
Ironton, PA

Average pressure in December - Ironton, PA
  • Average pressure in December: 30.09"Hg

The month with the highest atmospheric pressure is November (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).

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Average wind speed in December
Ironton, PA

Average wind speed in December - Ironton, PA
  • Average wind speed in December: 7.6mph

The windiest months (with the highest average wind speed) are January and March (8.1mph).
The calmest month (with the lowest average wind speed) is August (5mph).

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Average humidity in December
Ironton, PA

Average humidity in December - Ironton, PA
  • Average humidity in December: 80%

The month with the highest relative humidity is February (81%).
The months with the lowest relative humidity are April and July (76%).

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Average rainfall in December
Ironton, PA

Average rainfall in December - Ironton, PA
  • Average rainfall in December: 2.87"

The wettest month (with the highest rainfall) is July (3.19").
The driest month (with the least rainfall) is September (1.93").

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Average rainfall days in December
Ironton, PA

Average rainfall days in December - Ironton, PA
  • Average rainfall days in December: 12.1 days

The month with the highest number of rainy days is May (17.2 days).
The month with the least rainy days is January (9.9 days).

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Average snowfall in December
Ironton, PA

Average snowfall in December - Ironton, PA
  • Average snowfall in December: 2.95"

The month with the highest snowfall is March (4.88").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in December
Ironton, PA

Average snowfall days in December - Ironton, PA
  • Average snowfall days in December: 5.5 days

The month with the highest number of snowfall days is February (9.7 days).
The months with the least snowfall days are June, July, August and September (0 days).

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Average daylight in December /
Average sunshine in December
Ironton, PA

Average daylight in December / Average sunshine in December - Ironton, PA
  • Average daylight in December: 9h and 2min

The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 18min).

  • Average sunshine in December: 4h and 4min

The month with the most sunshine is July (Average sunshine: 10h and 24min).
The month with the least sunshine is February (Average sunshine: 4h and 30min).

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Average sunshine days in December
Ironton, PA

Average sunshine days in December - Ironton, PA
  • Average sunshine days in December: 15.7 days

The month with the most sunshine days is November (17.3 days).
The month with the least sunshine days is February (11.7 days).

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Average UV index in December
Ironton, PA

Average UV index in December - Ironton, PA
  • Average UV index in December: 2

The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).

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Average cloud cover in December
Ironton, PA

Average cloud cover in December - Ironton, PA
  • Average cloud cover in December: 51

The month with the most cloud cover is February (Cloud cover 52).
The month with the least cloud cover is July (Cloud cover 33).

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Average visibility in December
Ironton, PA

Average visibility in December - Ironton, PA
  • Average visibility in December: 5mi

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

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Ironton, Pennsylvania, USA

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