December weather forecast
Spinnerstown, PA

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Weather in December

The first month of the winter, December, is also an icy month in Spinnerstown, Pennsylvania, with an average temperature ranging between max 41.5°F (5.3°C) and min 30°F (-1.1°C).

Temperature

In Spinnerstown, the average high-temperature in December gently drops from a cool 50.4°F (10.2°C) in November to a cold 41.5°F (5.3°C). December witnesses an average nighttime temperature of 30°F (-1.1°C).

Humidity

The average relative humidity in December is 80%.

Rainfall

In December, in Spinnerstown, the rain falls for 10.8 days. Throughout December, 2.52" (64mm) of precipitation is accumulated. In Spinnerstown, Pennsylvania, during the entire year, the rain falls for 155.5 days and collects up to 28.15" (715mm) of precipitation.

Snowfall

January through May, October through December are months with snowfall in Spinnerstown. In Spinnerstown, in December, during 4.1 snowfall days, 2.01" (51mm) of snow is typically accumulated. In Spinnerstown, during the entire year, snow falls for 27 days and aggregates up to 12.52" (318mm) of snow.

Daylight

With an average of 9h and 18min of daylight, December has the shortest days of the year in Spinnerstown.
On the first day of December in Spinnerstown, sunrise is at 7:06 am and sunset at 4:35 pm. On the last day of the month, sunrise is at 7:24 am and sunset at 4:45 pm EST.

Sunshine

The average sunshine in December in Spinnerstown, Pennsylvania, is 4.8h.

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 value of 2, and less, symbolizes a low health risk from unsafe exposure to UV radiation for the ordinary person.
Note: In December, a daily maximum UV index of 2 leads to the following instructions:
Children, infants, and individuals with sensitive skin should be constantly protected from extended sun exposure. The intensity of the Sun's UV radiation during midday suggests reducing time spent outdoors. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage. Be on the lookout! Nearly twofold UV radiation from the Sun can be reflected by snow.
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Frequently asked questions

How cold does it get in Spinnerstown in December?

An average high-temperature, in December, in Spinnerstown, is 41.5°F (5.3°C) and the average low-temperature is 30°F (-1.1°C). The average heat index (a.k.a. 'apparent temperature', 'real feel'), which combines air temperature and relative humidity, in August is evaluated at 87.8°F (31°C).

What is the average humidity in December in Spinnerstown?

The average relative humidity in December in Spinnerstown, Pennsylvania, is 80%.

How much does it rain in Spinnerstown in December?

In Spinnerstown, in December, it is raining for 10.8 days, with typically 2.52" (64mm) of accumulated precipitation.

How much does it snow in Spinnerstown in December?

In December, in Spinnerstown, it is snowing for 4.1 days. Throughout December, 2.01" (51mm) of snow is accumulated.

What is the month with the shortest days in Spinnerstown?

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

How many hours of daylight does Spinnerstown have in December?

In Spinnerstown, Pennsylvania, the average day length in December is 9h and 20min.

What time are sunrise and sunset in December in Spinnerstown?

In December, on the first day of the month, sunrise is at 7:06 am and sunset at 4:35 pm. On the last day of the month, in Spinnerstown, sunrise is at 7:24 am and sunset at 4:45 pm EST.

How many hours of sunshine does Spinnerstown have in December?

In Spinnerstown, Pennsylvania, the average sunshine duration in December is 4.8h.

What are the months with the lowest UV index in Spinnerstown?

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

What is the UV index intensity in December in Spinnerstown?

In Spinnerstown, Pennsylvania, the average daily maximum UV index in December is 2. A UV Index 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
Spinnerstown, PA

Average temperature in December - Spinnerstown, PA
  • Average high temperature in December: 41.5°F

The warmest month (with the highest average high temperature) is July (84.6°F).
The month with the lowest average high temperature is January (35.1°F).

  • Average low temperature in December: 30°F

The month with the highest average low temperature is July (64.6°F).
The coldest month (with the lowest average low temperature) is January (22.5°F).

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Average pressure in December
Spinnerstown, PA

Average pressure in December - Spinnerstown, PA
  • Average pressure in December: 30.09"Hg

The month with the highest atmospheric pressure is November (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).

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Average wind speed in December
Spinnerstown, PA

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

The windiest month (with the highest average wind speed) is March (8.1mph).
The calmest month (with the lowest average wind speed) is August (5mph).

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Average humidity in December
Spinnerstown, PA

Average humidity in December - Spinnerstown, PA
  • Average humidity in December: 80%

The month with the highest relative humidity is February (81%).
The months with the lowest relative humidity are April and July (75%).

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Average rainfall in December
Spinnerstown, PA

Average rainfall in December - Spinnerstown, PA
  • Average rainfall in December: 2.52"

The wettest month (with the highest rainfall) is July (2.83").
The driest month (with the least rainfall) is September (1.65").

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Average rainfall days in December
Spinnerstown, PA

Average rainfall days in December - Spinnerstown, PA
  • Average rainfall days in December: 10.8 days

The month with the highest number of rainy days is May (16.8 days).
The month with the least rainy days is January (8 days).

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Average snowfall in December
Spinnerstown, PA

Average snowfall in December - Spinnerstown, PA
  • Average snowfall in December: 2.01"

The month with the highest snowfall is March (3.86").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in December
Spinnerstown, PA

Average snowfall days in December - Spinnerstown, PA
  • Average snowfall days in December: 4.1 days

The month with the highest number of snowfall days is January (8.5 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
Spinnerstown, PA

Average daylight in December / Average sunshine in December - Spinnerstown, 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 5min

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
Spinnerstown, PA

Average sunshine days in December - Spinnerstown, PA
  • Average sunshine days in December: 16 days

The month with the most sunshine days is November (18.3 days).
The month with the least sunshine days is April (12 days).

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Average UV index in December
Spinnerstown, PA

Average UV index in December - Spinnerstown, 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
Spinnerstown, PA

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

The months with the most cloud cover are February and December (Cloud cover 50).
The month with the least cloud cover is July (Cloud cover 33).

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Average visibility in December
Spinnerstown, PA

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

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

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Spinnerstown, Pennsylvania, USA

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