December weather forecast
Hostetter, PA

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Weather in December

The first month of the winter, December, is still a cold month in Hostetter, Pennsylvania, with an average temperature fluctuating between 38.8°F (3.8°C) and 27.5°F (-2.5°C).

Temperature

December's onset brings a reduction in the average high-temperature, from a chilly 48°F (8.9°C) in November to a wintry 38.8°F (3.8°C). Throughout December, the temperature in Hostetter falls to an average low of 27.5°F (-2.5°C).

Humidity

The average relative humidity in December is 84%.

Rainfall

In Hostetter, in December, during 11.5 rainfall days, 2.2" (56mm) of precipitation is typically accumulated. Throughout the year, there are 173.8 rainfall days, and 25.55" (649mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January through April, October through December. In Hostetter, in December, during 11.8 snowfall days, 4.17" (106mm) of snow is typically accumulated. Throughout the year, there are 58.9 snowfall days, and 18.62" (473mm) of snow is accumulated.

Daylight

December has the shortest days of the year, with an average of 9h and 24min of daylight.
On the first day of the month, sunrise is at 7:21 am and sunset at 4:52 pm. On the last day of December, sunrise is at 7:40 am and sunset at 5:01 pm EST.

Sunshine

The average sunshine in December is 3.5h.

UV index

December is the month with the lowest UV index, with an average maximum UV index of 1. A UV Index estimate of 2, and below, represents a low threat to health from exposure to the Sun's UV rays for the ordinary person.
Note: The maximum daily UV index of 1 in December converts into the following recommendations:
Prolonged sun exposure generally does not trouble most people. However, it is vital to ensure protection for babies, children, and individuals with sensitive skin. Midday Sun has the strongest UV rays, making it crucial to limit exposure and find shade. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance. Watch out! The Sun's UV radiation can be nearly magnified twofold due to snow reflection.
Updated: Jul 19, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How cold does it get in December?

The high-temperature, in December, in Hostetter, records 38.8°F (3.8°C), while the low-temperature is 27.5°F (-2.5°C). The average heat index (a.k.a. 'felt air temperature', 'feels like'), which combines relative humidity and air temperature, in July is estimated at 87.8°F (31°C).

What is the average humidity in December?

In Hostetter, the average relative humidity in December is 84%.

How much does it rain in December?

In Hostetter, Pennsylvania, in December, it is raining for 11.5 days, with typically 2.2" (56mm) of accumulated precipitation.

How much does it snow in December?

In Hostetter, in December, during 11.8 snowfall days, 4.17" (106mm) of snow is typically accumulated.

What is the month with the shortest days?

December has the shortest days of the year, with an average of 9h and 24min of daylight.

What is the average length of the day in December?

The average day length in December is 9h and 22min.

When is the sunrise / sunset in December?

On the first day of December, sunrise is at 7:21 am and sunset at 4:52 pm. On the last day of the month, sunrise is at 7:40 am and sunset at 5:01 pm EST.

How many hours of sunshine does Hostetter have in December?

In December, the average sunshine duration in Hostetter is 3.5h.

What is the month with the lowest UV index?

With an average maximum UV index of 1, December is the month with the lowest UV index.

What is the UV index reading in December?

In Hostetter, the average daily maximum UV index in December is 1. A UV Index value of 2, and less, symbolizes a low health risk 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
Hostetter, PA

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

The warmest month (with the highest average high temperature) is July (81.7°F).
The month with the lowest average high temperature is January (32.5°F).

  • Average low temperature in December: 27.5°F

The month with the highest average low temperature is July (60.3°F).
The coldest month (with the lowest average low temperature) is January (20.1°F).

Average pressure in December
Hostetter, PA

Average pressure in December - Hostetter, 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
Hostetter, PA

Average wind speed in December - Hostetter, PA
  • Average wind speed in December: 8.2mph

The windiest month (with the highest average wind speed) is January (8.8mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).

Average humidity in December
Hostetter, PA

Average humidity in December - Hostetter, PA
  • Average humidity in December: 84%

The month with the highest relative humidity is February (86%).
The months with the lowest relative humidity are April, June, July and August (78%).

Average rainfall in December
Hostetter, PA

Average rainfall in December - Hostetter, PA
  • Average rainfall in December: 2.2"

The wettest month (with the highest rainfall) is May (3.03").
The driest month (with the least rainfall) is November (1.38").

Average rainfall days in December
Hostetter, PA

Average rainfall days in December - Hostetter, PA
  • Average rainfall days in December: 11.5 days

The month with the highest number of rainy days is May (20.4 days).
The month with the least rainy days is January (9.5 days).

Average snowfall in December
Hostetter, PA

Average snowfall in December - Hostetter, PA
  • Average snowfall in December: 4.17"

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

Average snowfall days in December
Hostetter, PA

Average snowfall days in December - Hostetter, PA
  • Average snowfall days in December: 11.8 days

The month with the highest number of snowfall days is January (17.6 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in December / Average sunshine in December - Hostetter, 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: 3h and 3min

The month with the most sunshine is August (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 3h and 0min).

Average sunshine days in December
Hostetter, PA

Average sunshine days in December - Hostetter, PA
  • Average sunshine days in December: 9.9 days

The month with the most sunshine days is November (14.4 days).
The month with the least sunshine days is January (7 days).

Average UV index in December
Hostetter, PA

Average UV index in December - Hostetter, PA
  • Average UV index in December: 1

The months with the highest UV index are June and July (UV index 6).
The month with the lowest UV index is December (UV index 1).

Average cloud cover in December
Hostetter, PA

Average cloud cover in December - Hostetter, PA
  • Average cloud cover in December: 65

The month with the most cloud cover is January (Cloud cover 70).
The month with the least cloud cover is August (Cloud cover 35).

Average visibility in December
Hostetter, PA

Average visibility in December - Hostetter, PA
  • Average visibility in December: 5mi

The month with the highest visibility is April (6mi).
The month with the lowest visibility is January (4mi).

Hostetter, Pennsylvania, USA

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