December weather forecast
Idaville, PA

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Weather in December

December, the first month of the winter in Idaville, is also an icy month, with an average temperature varying between 28.9°F (-1.7°C) and 40.8°F (4.9°C).

Temperature

December shows a mild decline in the average high-temperature, falling from November's chilly 49.8°F (9.9°C) to an icy 40.8°F (4.9°C). The average temperature in Idaville during December nights dips to a freezing cold 28.9°F (-1.7°C).

Humidity

In December, the average relative humidity is 79%.

Rainfall

In December, the rain falls for 10.8 days. Throughout December, 2.13" (54mm) of precipitation is accumulated. Throughout the year, in Idaville, Pennsylvania, there are 158 rainfall days, and 28.03" (712mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January through May, October through December. In December, it is snowing for 4.9 days. Throughout December, 1.89" (48mm) of snow is accumulated. In Idaville, during the entire year, snow falls for 29.2 days and aggregates up to 15.31" (389mm) of snow.

Daylight

With an average of 9h and 24min of daylight, December has the shortest days of the year in Idaville.
On the first day of December, sunrise is at 7:12 am and sunset at 4:44 pm. On the last day of the month, sunrise is at 7:30 am and sunset at 4:53 pm EST.

Sunshine

In December, the average sunshine is 4.6h.

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 minimal health vulnerability from exposure to the Sun's UV radiation for average individuals.
Note: An average maximum UV index of 2 in December leads to these recommendations:
While extended sun exposure does not significantly affect most people, those with sensitive skin, children, and infants should always be protected. Midday Sun has the strongest UV rays, making it crucial to limit exposure and find shade. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays. Consider carefully! The reflective quality of snow can almost double the intensity of the Sun's UV radiation.

Frequently asked questions

Is it cold during December?

In Idaville, 40.8°F (4.9°C) is the average high-temperature and 28.9°F (-1.7°C) is the average low-temperature during December. In August, the average heat index (a.k.a. 'apparent temperature', 'feels like'), which takes the relative humidity and factors it into the air temperature reading, is calculated to be 86°F (30°C).

What is the average humidity in December?

In Idaville, the average relative humidity in December is 79%.

How much does it rain in December?

In Idaville, in December, it is raining for 10.8 days, with typically 2.13" (54mm) of accumulated precipitation.

How many days does it snow in December?

In December, it is snowing for 4.9 days. Throughout December, 1.89" (48mm) of snow is accumulated.

What is the month with the shortest days?

The month with the shortest days is December, with an average of 9h and 24min of daylight.

How many hours of daylight does Idaville have in December?

The average day length in December is 9h and 23min.

When is the sunrise / sunset in December?

In December, on the first day of the month, sunrise is at 7:12 am and sunset at 4:44 pm. On the last day of the month, sunrise is at 7:30 am and sunset at 4:53 pm EST.

How long on average sun shines in December?

The average sunshine duration in December is 4.6h.

What are the months with the lowest UV index?

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

How high is the UV index in December?

The average daily maximum UV index in December is 2. A UV Index reading of 2, and below, represents a low health threat from unsafe 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
Idaville, PA

Average temperature in December - Idaville, PA
  • Average high temperature in December: 40.8°F

The warmest month (with the highest average high temperature) is July (83.8°F).
The month with the lowest average high temperature is January (34.7°F).

  • Average low temperature in December: 28.9°F

The month with the highest average low temperature is July (62.8°F).
The coldest month (with the lowest average low temperature) is January (21.9°F).

Average pressure in December
Idaville, PA

Average pressure in December - Idaville, PA
  • Average pressure in December: 30.11"Hg

The month with the highest atmospheric pressure is November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).

Average wind speed in December
Idaville, PA

Average wind speed in December - Idaville, PA
  • Average wind speed in December: 7.4mph

The windiest month (with the highest average wind speed) is January (7.9mph).
The calmest months (with the lowest average wind speed) are July and August (4.7mph).

Average humidity in December
Idaville, PA

Average humidity in December - Idaville, PA
  • Average humidity in December: 79%

The months with the highest relative humidity are February, May and October (80%).
The months with the lowest relative humidity are April and July (76%).

Average rainfall in December
Idaville, PA

Average rainfall in December - Idaville, PA
  • Average rainfall in December: 2.13"

The wettest month (with the highest rainfall) is May (3.11").
The driest month (with the least rainfall) is September (1.97").

Average rainfall days in December
Idaville, PA

Average rainfall days in December - Idaville, PA
  • Average rainfall days in December: 10.8 days

The month with the highest number of rainy days is May (17.9 days).
The month with the least rainy days is January (7.9 days).

Average snowfall in December
Idaville, PA

Average snowfall in December - Idaville, PA
  • Average snowfall in December: 1.89"

The month with the highest snowfall is January (4.53").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in December
Idaville, PA

Average snowfall days in December - Idaville, PA
  • Average snowfall days in December: 4.9 days

The month with the highest number of snowfall days is January (8.7 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in December / Average sunshine in December - Idaville, 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 24min).

  • 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 24min).

Average sunshine days in December
Idaville, PA

Average sunshine days in December - Idaville, PA
  • Average sunshine days in December: 16.1 days

The month with the most sunshine days is November (18.7 days).
The month with the least sunshine days is May (11 days).

Average UV index in December
Idaville, PA

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

The months with the highest UV index are May, June and July (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
Idaville, PA

Average cloud cover in December - Idaville, 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 32).

Average visibility in December
Idaville, PA

Average visibility in December - Idaville, PA
  • Average visibility in December: 6mi

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

Idaville, Pennsylvania, USA

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