December weather forecast
Upper Brownville, PA

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Weather in December

The first month of the winter, December, is also a wintry month in Upper Brownville, Pennsylvania, with an average temperature fluctuating between 27.5°F (-2.5°C) and 37.9°F (3.3°C).

Temperature

The beginning of December marks a decrease in the average high-temperature, transitioning from a chilly 47.3°F (8.5°C) in November to an icy 37.9°F (3.3°C). The nights of December in Upper Brownville anticipate an average low-temperature of 27.5°F (-2.5°C).

Humidity

In Upper Brownville, the average relative humidity in December is 82%.

Rainfall

In Upper Brownville, Pennsylvania, in December, it is raining for 12.6 days, with typically 2.87" (73mm) of accumulated precipitation. Throughout the year, there are 171 rainfall days, and 34.25" (870mm) of precipitation is accumulated.

Snowfall

January through May, October through December are months with snowfall. In December, it is snowing for 8.6 days. Throughout December, 3.9" (99mm) of snow is accumulated. In Upper Brownville, during the entire year, snow falls for 48.5 days and aggregates up to 27.72" (704mm) of snow.

Daylight

The month with the shortest days is December, with an average of 9h and 18min of daylight.
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 7:29 am and sunset at 4:47 pm EST.

Sunshine

The average sunshine in December is 4.4h.

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 minimal health vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: The average daily UV index of 2 in December transforms into the following instructions:
While extended sun exposure does not significantly affect most people, those with sensitive skin, children, and infants should always be protected. UV radiation from the Sun is most dangerous during midday; take precautions and seek shade. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes. Bear in mind! The Sun's UV radiation can nearly double in intensity due to the reflective quality of snow.
Updated: Jul 28, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

Is December cold?

In Upper Brownville, in December, the average high-temperature is 37.9°F (3.3°C), and the average low-temperature is 27.5°F (-2.5°C). The average heat index (a.k.a. 'real feel', 'felt air temperature'), which combines relative humidity and air temperature, in July is estimated at 86°F (30°C).

What is the average humidity in December?

In December, the average relative humidity in Upper Brownville is 82%.

How much does it rain in December?

In Upper Brownville, in December, it is raining for 12.6 days, with typically 2.87" (73mm) of accumulated precipitation.

How many days does it snow in December?

In Upper Brownville, during December, snow falls for 8.6 days and regularly aggregates up to 3.9" (99mm) of snow.

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.

How many hours of daylight does Upper Brownville have in December?

In Upper Brownville, 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 7:29 am and sunset at 4:47 pm EST.

How long on average sun shines in December?

In Upper Brownville, the average sunshine duration in December is 4.4h.

What is the month 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?

In Upper Brownville, the average daily maximum UV index in December is 2. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's 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
Upper Brownville, PA

Average temperature in December - Upper Brownville, PA
  • Average high temperature in December: 37.9°F

The warmest month (with the highest average high temperature) is July (81.1°F).
The month with the lowest average high temperature is January (31.8°F).

  • Average low temperature in December: 27.5°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 (19.6°F).

Average pressure in December
Upper Brownville, PA

Average pressure in December - Upper Brownville, 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
Upper Brownville, PA

Average wind speed in December - Upper Brownville, 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
Upper Brownville, PA

Average humidity in December - Upper Brownville, 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
Upper Brownville, PA

Average rainfall in December - Upper Brownville, PA
  • Average rainfall in December: 2.87"

The wettest month (with the highest rainfall) is May (3.39").
The driest month (with the least rainfall) is September (1.97").

Average rainfall days in December
Upper Brownville, PA

Average rainfall days in December - Upper Brownville, PA
  • Average rainfall days in December: 12.6 days

The month with the highest number of rainy days is May (19 days).
The month with the least rainy days is January (9.7 days).

Average snowfall in December
Upper Brownville, PA

Average snowfall in December - Upper Brownville, PA
  • Average snowfall in December: 3.9"

The month with the highest snowfall is January (7.24").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in December
Upper Brownville, PA

Average snowfall days in December - Upper Brownville, PA
  • Average snowfall days in December: 8.6 days

The month with the highest number of snowfall days is January (12.7 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in December /
Average sunshine in December
Upper Brownville, PA

Average daylight in December / Average sunshine in December - Upper Brownville, 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
Upper Brownville, PA

Average sunshine days in December - Upper Brownville, PA
  • Average sunshine days in December: 13.6 days

The month with the most sunshine days is November (15.8 days).
The month with the least sunshine days is May (9.1 days).

Average UV index in December
Upper Brownville, PA

Average UV index in December - Upper Brownville, PA
  • Average UV index in December: 2

The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January, February, March, November and December (UV index 2).

Average cloud cover in December
Upper Brownville, PA

Average cloud cover in December - Upper Brownville, 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 33).

Average visibility in December
Upper Brownville, PA

Average visibility in December - Upper Brownville, PA
  • Average visibility in December: 5mi

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

Upper Brownville, Pennsylvania, USA

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