December weather forecast
Trevorton, PA

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Weather in December

The first month of the winter, December, is also an icy month in Trevorton, Pennsylvania, with an average temperature fluctuating between 28°F (-2.2°C) and 38.8°F (3.8°C).

Temperature

A shift in Trevorton's weather is observed as November turns into December, with the average high temperature reducing from a frosty 47.8°F (8.8°C) to an icy 38.8°F (3.8°C). Throughout December, an average low-temperature of 28°F (-2.2°C) is expected.

Humidity

In December, the average relative humidity is 81%.

Rainfall

In Trevorton, during December, the rain falls for 4 days and regularly aggregates up to 0.47" (12mm) of precipitation. Throughout the year, there are 78.5 rainfall days, and 6.57" (167mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January through April, November and December. In Trevorton, in December, snow falls for 3.3 days, with typically accumulated 0.16" (4mm) of snow. Throughout the year, there are 17.5 snowfall days, and 1.77" (45mm) of snow is accumulated.

Daylight

The month with the shortest days is December, with an average of 9h and 18min of daylight.
On the first day of the month, sunrise is at 7:12 am and sunset at 4:39 pm. On the last day of December, in Trevorton, sunrise is at 7:30 am and sunset at 4:49 pm EST.

Sunshine

In December, the average sunshine is 4.3h.

UV index

The months with the lowest UV index 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 low threat to health from exposure to the Sun's UV rays for the average person.
Note: A maximum daily UV index of 2 during December morphs into the following directions:
While many people can endure lengthy sun exposure, it remains imperative to safeguard babies, children, and fair-skinned individuals. Considering the strength of solar radiation at midday, one should avoid direct Sun exposure. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit. Take note! UV radiation from the Sun can double in intensity due to snow reflection.

Frequently asked questions

How cold is it in December?

The high-temperature during December is 38.8°F (3.8°C) and the low-temperature is 28°F (-2.2°C). In July, the average heat index (a.k.a. 'real feel', 'feels like'), which combines air temperature and relative humidity, is calculated to be 87.8°F (31°C).

What is the average humidity in December?

The average relative humidity in December is 81%.

How much does it rain in December?

In Trevorton, during December, the rain falls for 4 days and regularly aggregates up to 0.47" (12mm) of precipitation.

How many days does it snow in December?

In December, it is snowing for 3.3 days. Throughout December, 0.16" (4mm) of snow is accumulated.

What is the month with the shortest days?

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

How many hours of daylight does Trevorton have in December?

In December, the average day length in Trevorton is 9h and 19min.

When are sunrise and sunset in December?

On the first day of December, sunrise is at 7:12 am and sunset at 4:39 pm. On the last day of the month, sunrise is at 7:30 am and sunset at 4:49 pm EST.

How long on average sun shines in December?

In Trevorton, the average sunshine duration in December is 4.3h.

When is 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?

In Trevorton, Pennsylvania, the average daily maximum UV index in December 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
Trevorton, PA

Average temperature in December - Trevorton, PA
  • Average high temperature in December: 38.8°F

The warmest month (with the highest average high temperature) is July (81.5°F).
The month with the lowest average high temperature is January (32.2°F).

  • Average low temperature in December: 28°F

The month with the highest average low temperature is July (61.2°F).
The coldest month (with the lowest average low temperature) is January (20.1°F).

Average pressure in December
Trevorton, PA

Average pressure in December - Trevorton, PA
  • Average pressure in December: 30.1"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
Trevorton, PA

Average wind speed in December - Trevorton, PA
  • Average wind speed in December: 7.5mph

The windiest month (with the highest average wind speed) is March (8.3mph).
The calmest month (with the lowest average wind speed) is August (4.7mph).

Average humidity in December
Trevorton, PA

Average humidity in December - Trevorton, PA
  • Average humidity in December: 81%

The month with the highest relative humidity is February (82%).
The months with the lowest relative humidity are March and April (77%).

Average rainfall in December
Trevorton, PA

Average rainfall in December - Trevorton, PA
  • Average rainfall in December: 0.47"

The wettest month (with the highest rainfall) is July (0.79").
The driest month (with the least rainfall) is September (0.24").

Average rainfall days in December
Trevorton, PA

Average rainfall days in December - Trevorton, PA
  • Average rainfall days in December: 4 days

The month with the highest number of rainy days is July (10.4 days).
The month with the least rainy days is November (3.2 days).

Average snowfall in December
Trevorton, PA

Average snowfall in December - Trevorton, PA
  • Average snowfall in December: 0.16"

The months with the highest snowfall are January, February and March (0.43").
The months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days in December
Trevorton, PA

Average snowfall days in December - Trevorton, PA
  • Average snowfall days in December: 3.3 days

The month with the highest number of snowfall days is January (5.7 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in December / Average sunshine in December - Trevorton, 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 12min).

Average sunshine days in December
Trevorton, PA

Average sunshine days in December - Trevorton, PA
  • Average sunshine days in December: 23.6 days

The month with the most sunshine days is January (24.4 days).
The month with the least sunshine days is July (16.5 days).

Average UV index in December
Trevorton, PA

Average UV index in December - Trevorton, 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
Trevorton, PA

Average cloud cover in December - Trevorton, PA
  • Average cloud cover in December: 54

The month with the most cloud cover is February (Cloud cover 55).
The month with the least cloud cover is July (Cloud cover 32).

Average visibility in December
Trevorton, PA

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

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

Trevorton, Pennsylvania, USA

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