December weather forecast
Mahanoy City, PA

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Weather in December

The first month of the winter, December, is also an icy month in Mahanoy City, Pennsylvania, with an average temperature varying between 27.5°F (-2.5°C) and 37.9°F (3.3°C).

Temperature

As November transitions to December, the average high-temperature falls from a frosty 47.3°F (8.5°C) to an icy 37.9°F (3.3°C). In December, the average low-temperature records at a subzero cold 27.5°F (-2.5°C) during the nights.

Humidity

The average relative humidity in December is 82%.

Rainfall

In Mahanoy City, in December, it is raining for 8.9 days, with typically 1.85" (47mm) of accumulated precipitation. In Mahanoy City, during the entire year, the rain falls for 139.8 days and collects up to 24.69" (627mm) of precipitation.

Snowfall

January through May, October through December are months with snowfall. In December, it is snowing for 4.9 days. Throughout December, 2.83" (72mm) of snow is accumulated. Throughout the year, there are 33.6 snowfall days, and 20.67" (525mm) of snow is accumulated.

Daylight

With an average of 9h and 18min of daylight, December has the shortest days of the year.
On the first day of December, sunrise is at 7:10 am and sunset at 4:37 pm. On the last day of the month, sunrise is at 7:28 am and sunset at 4:47 pm EST.

Sunshine

In December, the average sunshine is 4.4h.

UV index

January through March, November 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 threat to health from exposure to the Sun's UV rays for average individuals.
Note: In December, the UV index of 2 transforms into the following advice:
Despite most people tolerating extended sun exposure, it is critical to always protect those with sensitive skin, infants, and children. Avoid the Sun's strongest UV rays by seeking shade and limiting exposure during midday. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses. Be informed! The Sun's UV radiation can be nearly doubled due to the reflection from snow.

Frequently asked questions

Is it cold during December?

The high-temperature, in December, in Mahanoy City, records 37.9°F (3.3°C), while the low-temperature is 27.5°F (-2.5°C). The average heat index (a.k.a. 'feels like', 'real feel'), which calculates the temperature value influenced by the moisture in the air, in July is estimated at 86°F (30°C).

What is the average humidity in December?

The average relative humidity in December in Mahanoy City is 82%.

How many days does it rain in December in Mahanoy City?

In Mahanoy City, during December, the rain falls for 8.9 days and regularly aggregates up to 1.85" (47mm) of precipitation.

How many days does it snow in December?

In December, it is snowing for 4.9 days. Throughout December, 2.83" (72mm) of snow is accumulated.

What is the month with the shortest days?

With an average of 9h and 18min of daylight, December has the shortest days of the year.

What is the average length of the day in December?

The average day length in December is 9h and 18min.

What time are sunrise and sunset in December?

In December, on the first day of the month, sunrise is at 7:10 am and sunset at 4:37 pm. On the last day of the month, sunrise is at 7:28 am and sunset at 4:47 pm EST.

How long on average sun shines in December?

The average sunshine duration in December is 4.4h.

What is the month with the lowest UV index?

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

How high is the UV index in December?

In December, the average daily maximum UV index is 2. A UV Index reading of 2, and below, represents a minimal hazard to health from exposure to Sun's UV rays.
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
Mahanoy City, PA

Average temperature in December - Mahanoy City, PA
  • Average high temperature in December: 37.9°F

The warmest month (with the highest average high temperature) is July (81°F).
The month with the lowest average high temperature is January (31.6°F).

  • Average low temperature in December: 27.5°F

The month with the highest average low temperature is July (61.5°F).
The coldest month (with the lowest average low temperature) is January (19.8°F).

Average pressure in December
Mahanoy City, PA

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

The month with the highest atmospheric pressure is November (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).

Average wind speed in December
Mahanoy City, PA

Average wind speed in December - Mahanoy City, PA
  • Average wind speed in December: 7.7mph

The windiest month (with the highest average wind speed) is March (8.3mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).

Average humidity in December
Mahanoy City, PA

Average humidity in December - Mahanoy City, PA
  • Average humidity in December: 82%

The month with the highest relative humidity is February (83%).
The month with the lowest relative humidity is April (77%).

Average rainfall in December
Mahanoy City, PA

Average rainfall in December - Mahanoy City, PA
  • Average rainfall in December: 1.85"

The wettest month (with the highest rainfall) is May (2.72").
The driest month (with the least rainfall) is September (1.57").

Average rainfall days in December
Mahanoy City, PA

Average rainfall days in December - Mahanoy City, PA
  • Average rainfall days in December: 8.9 days

The month with the highest number of rainy days is May (17.2 days).
The month with the least rainy days is January (5.8 days).

Average snowfall in December
Mahanoy City, PA

Average snowfall in December - Mahanoy City, PA
  • Average snowfall in December: 2.83"

The month with the highest snowfall is March (4.96").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in December
Mahanoy City, PA

Average snowfall days in December - Mahanoy City, PA
  • Average snowfall days in December: 4.9 days

The month with the highest number of snowfall days is February (8.8 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in December /
Average sunshine in December
Mahanoy City, PA

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

The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).

  • Average sunshine in December: 4h and 2min

The month with the most sunshine is July (Average sunshine: 10h and 24min).
The months with the least sunshine are January and February (Average sunshine: 4h and 18min).

Average sunshine days in December
Mahanoy City, PA

Average sunshine days in December - Mahanoy City, PA
  • Average sunshine days in December: 18.5 days

The months with the most sunshine days are January and November (19.6 days).
The month with the least sunshine days is May (11.2 days).

Average UV index in December
Mahanoy City, PA

Average UV index in December - Mahanoy City, PA
  • Average UV index in December: 2

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

Average cloud cover in December
Mahanoy City, PA

Average cloud cover in December - Mahanoy City, PA
  • Average cloud cover in December: 54

The months with the most cloud cover are February and December (Cloud cover 54).
The month with the least cloud cover is July (Cloud cover 33).

Average visibility in December
Mahanoy City, PA

Average visibility in December - Mahanoy City, 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).

Mahanoy City, Pennsylvania, USA

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