December weather forecast
Hershey, PA

Weather in December

The first month of the winter, December, is still a cold month in Hershey, Pennsylvania, with an average temperature fluctuating between 29.5°F (-1.4°C) and 41°F (5°C).

Temperature

In Hershey, Pennsylvania, the average high-temperature in December slightly decreases from a frosty 49.8°F (9.9°C) in November to a cold 41°F (5°C). In Hershey, the average low-temperature is 29.5°F (-1.4°C).

Humidity

The average relative humidity in December in Hershey is 79%.

Rainfall

In December, the rain falls for 12 days. Throughout December, 2.44" (62mm) of precipitation is accumulated. In Hershey, during the entire year, the rain falls for 162.3 days and collects up to 30.71" (780mm) of precipitation.

Snowfall

Months with snowfall in Hershey are January through April, October through December. In Hershey, Pennsylvania, during December, snow falls for 5.2 days and regularly aggregates up to 1.73" (44mm) of snow. In Hershey, during the entire year, snow falls for 27.8 days and aggregates up to 13.23" (336mm) of snow.

Daylight

The month with the shortest days is December, with an average of 9h and 22min of daylight.
On the first day of the month, sunrise is at 7:10 am and sunset at 4:41 pm. On the last day of December, sunrise is at 7:29 am and sunset at 4:50 pm EST.

Sunshine

The average sunshine in December in Hershey 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 of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV radiation for ordinary individuals.
Note: The daily maximum UV index of 2 in December interpret into the following advice:
Most people can stay in the Sun for up to 1 hour without burning, apart from children that always must be protected from sun exposure. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
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FAQ

What is the temperature in December in Hershey?

In Hershey, Pennsylvania, in December, the average high-temperature is 41°F (5°C), and the average low-temperature is 29.5°F (-1.4°C). The average heat index (a.k.a. 'real feel', 'apparent temperature'), which takes the relative humidity and factors it into the air temperature reading, in July is appraised at 89.6°F (32°C).

What is the average humidity in December in Hershey?

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

How much does it rain in Hershey in December?

In December, in Hershey, the rain falls for 12 days. Throughout December, 2.44" (62mm) of precipitation is accumulated.

How many days does it snow in December in Hershey?

In December, in Hershey, Pennsylvania, it is snowing for 5.2 days. Throughout December, 1.73" (44mm) of snow is accumulated.

What is the month with the shortest days in Hershey?

The month with the shortest days in Hershey is December, with an average of 9h and 22min of daylight.

How many hours of daylight does Hershey have in December?

In December, the average day length in Hershey is 9h and 22min.

When are sunrise and sunset in December in Hershey?

In December, on the first day of the month, sunrise is at 7:10 am and sunset at 4:41 pm. On the last day of the month, sunrise is at 7:29 am and sunset at 4:50 pm EST.

How many hours of sunshine does Hershey have in December?

In December, the average sunshine duration in Hershey, Pennsylvania, is 4.6h.

What is the month with the lowest UV index in Hershey?

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

What is the UV index intensity in December in Hershey?

The average daily maximum UV index in December in Hershey is 2. A UV Index of 2, and less, symbolizes a minimal hazard to health 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
Hershey, PA

Average temperature in December - Hershey, PA
  • Average high temperature in December: 41°F

The warmest month (with the highest average high temperature) is July (82.4°F).
The month with the lowest average high temperature is January (34.2°F).

  • Average low temperature in December: 29.5°F

The month with the highest average low temperature is July (63.5°F).
The coldest month (with the lowest average low temperature) is January (21.9°F).

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Average pressure in December
Hershey, PA

Average pressure in December - Hershey, 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).

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Average wind speed in December
Hershey, PA

Average wind speed in December - Hershey, PA
  • Average wind speed in December: 7.9mph

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).

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Average humidity in December
Hershey, PA

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

The months with the highest relative humidity are February and May (81%).
The months with the lowest relative humidity are March and April (76%).

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Average rainfall in December
Hershey, PA

Average rainfall in December - Hershey, PA
  • Average rainfall in December: 2.44"

The wettest month (with the highest rainfall) is May (3.15").
The driest month (with the least rainfall) is September (2.05").

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Average rainfall days in December
Hershey, PA

Average rainfall days in December - Hershey, PA
  • Average rainfall days in December: 12 days

The month with the highest number of rainy days is May (18.4 days).
The month with the least rainy days is January (8.5 days).

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Average snowfall in December
Hershey, PA

Average snowfall in December - Hershey, PA
  • Average snowfall in December: 1.73"

The month with the highest snowfall is January (3.94").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in December
Hershey, PA

Average snowfall days in December - Hershey, PA
  • Average snowfall days in December: 5.2 days

The month with the highest number of snowfall days is January (9 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in December / Average sunshine in December - Hershey, PA
  • Average daylight in December: 9h and 22min

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 22min).

  • Average sunshine in December: 4h and 36min

The month with the most sunshine is July (Average sunshine: 10h and 30min).
The month with the least sunshine is February (Average sunshine: 4h and 30min).

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Average sunshine days in December
Hershey, PA

Average sunshine days in December - Hershey, PA
  • Average sunshine days in December: 15.6 days

The month with the most sunshine days is November (17.5 days).
The month with the least sunshine days is May (10 days).

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Average UV index in December
Hershey, PA

Average UV index in December - Hershey, 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).

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Average cloud cover in December
Hershey, PA

Average cloud cover in December - Hershey, PA
  • Average cloud cover in December: 50

The month with the most cloud cover is February (Cloud cover 51).
The month with the least cloud cover is July (Cloud cover 31).

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Average visibility in December
Hershey, PA

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

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

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