December weather forecast
Tremont, PA

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Weather in December

December, the first month of the winter in Tremont, is also an icy month, with temperature in the range of an average high of 39.7°F (4.3°C) and an average low of 28.2°F (-2.1°C).

Temperature

Tremont's December weather features a mild decline in high-temperatures, reducing from a chilly 48.7°F (9.3°C) in November to a cold 39.7°F (4.3°C). In the month of December, Tremont's average low-temperature falls to a freezing cold 28.2°F (-2.1°C).

Humidity

In December, the average relative humidity is 81%.

Rainfall

In Tremont, during December, the rain falls for 9.5 days and regularly aggregates up to 1.02" (26mm) of precipitation. In Tremont, during the entire year, the rain falls for 133.5 days and collects up to 15.16" (385mm) of precipitation.

Snowfall

January through May, October through December are months with snowfall. In December, it is snowing for 3.9 days. Throughout December, 0.91" (23mm) of snow is accumulated. Throughout the year, there are 23.2 snowfall days, and 5.67" (144mm) 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 7:10 am and sunset at 4:39 pm. On the last day of December, sunrise is at 7:29 am and sunset at 4:48 pm EST.

Sunshine

In Tremont, the average sunshine in December 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 of 2, and less, symbolizes a low health risk from exposure to the Sun's UV radiation for the ordinary person.
Note: The UV index of 2 in December translates into these instructions:
Sun exposure does not present considerable issues for many, yet infants, fair-skinned people, and children necessitate constant protection. Solar radiation is at its peak intensity during midday, so it's advisable to stay indoors or in the shade. Always opt for UVA and UVB-resistant sunglasses on radiant days. On your guard! Snow's reflection can almost double the intensity of the Sun's UV radiation.
Updated: Jul 16, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How cold is December?

December temperatures vary between a high-temperature of 39.7°F (4.3°C) and a low-temperature of 28.2°F (-2.1°C). In July, the average heat index (a.k.a. 'felt air temperature', 'feels like'), which combines relative humidity and air temperature, is calculated to be 87.8°F (31°C).

What is the average humidity in December?

In December, the average relative humidity in Tremont is 81%.

How many days does it rain in December?

In Tremont, in December, it is raining for 9.5 days, with typically 1.02" (26mm) of accumulated precipitation.

How many days does it snow in December?

In Tremont, in December, snow falls for 3.9 days, with typically accumulated 0.91" (23mm) of snow.

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.

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

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

When are sunrise and sunset in December in Tremont?

On the first day of December, sunrise is at 7:10 am and sunset at 4:39 pm. On the last day of the month, sunrise is at 7:29 am and sunset at 4:48 pm EST.

How long on average sun shines in December?

The average sunshine duration in December is 4.4h.

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.

What is the UV index reading in December?

The average daily maximum UV index in December in Tremont is 2. A UV Index estimate of 2, and below, represents a low health risk 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
Tremont, PA

Average temperature in December - Tremont, PA
  • Average high temperature in December: 39.7°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 (33.4°F).

  • Average low temperature in December: 28.2°F

The month with the highest average low temperature is July (62.1°F).
The coldest month (with the lowest average low temperature) is January (20.7°F).

Average pressure in December
Tremont, PA

Average pressure in December - Tremont, 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
Tremont, PA

Average wind speed in December - Tremont, PA
  • Average wind speed in December: 7.8mph

The windiest month (with the highest average wind speed) is March (8.6mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).

Average humidity in December
Tremont, PA

Average humidity in December - Tremont, 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
Tremont, PA

Average rainfall in December - Tremont, PA
  • Average rainfall in December: 1.02"

The wettest month (with the highest rainfall) is August (1.93").
The driest month (with the least rainfall) is February (0.83").

Average rainfall days in December
Tremont, PA

Average rainfall days in December - Tremont, PA
  • Average rainfall days in December: 9.5 days

The month with the highest number of rainy days is May (15.4 days).
The month with the least rainy days is January (6.8 days).

Average snowfall in December
Tremont, PA

Average snowfall in December - Tremont, PA
  • Average snowfall in December: 0.91"

The month with the highest snowfall is January (1.77").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in December
Tremont, PA

Average snowfall days in December - Tremont, PA
  • Average snowfall days in December: 3.9 days

The month with the highest number of snowfall days is January (6.9 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in December / Average sunshine in December - Tremont, 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 2min

The month with the most sunshine is July (Average sunshine: 10h and 12min).
The month with the least sunshine is February (Average sunshine: 4h and 18min).

Average sunshine days in December
Tremont, PA

Average sunshine days in December - Tremont, PA
  • Average sunshine days in December: 18.3 days

The month with the most sunshine days is January (20.8 days).
The month with the least sunshine days is May (12.7 days).

Average UV index in December
Tremont, PA

Average UV index in December - Tremont, 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).

Average cloud cover in December
Tremont, PA

Average cloud cover in December - Tremont, PA
  • Average cloud cover in December: 53

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

Average visibility in December
Tremont, PA

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

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

Tremont, Pennsylvania, USA

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