December weather forecast
Seipstown, PA

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Weather in December

December, the first month of the winter in Seipstown, is still a cold month, with an average temperature fluctuating between 28.9°F (-1.7°C) and 40.3°F (4.6°C).

Temperature

With the beginning of December, the average high-temperature shows a decrease, transitioning from a cool 50°F (10°C) in November to a cold 40.3°F (4.6°C). In December, Seipstown experiences a temperature dip to an average of 28.9°F (-1.7°C) at night.

Humidity

The average relative humidity in December is 80%.

Rainfall

In Seipstown, in December, during 11.2 rainfall days, 2.68" (68mm) of precipitation is typically accumulated. Throughout the year, there are 155.8 rainfall days, and 30.75" (781mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January through May, October through December. In Seipstown, in December, during 5 snowfall days, 2.36" (60mm) of snow is typically accumulated. Throughout the year, in Seipstown, Pennsylvania, there are 29.4 snowfall days, and 15.87" (403mm) of snow is accumulated.

Daylight

December has the shortest days of the year, with an average of 9h and 18min of daylight.
On the first day of the month, sunrise is at 7:07 am and sunset at 4:36 pm. On the last day of December, sunrise is at 7:26 am and sunset at 4:45 pm EST.

Sunshine

In Seipstown, the average sunshine in December is 4.7h.

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 of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV rays for average individuals.
Note: A daily high UV index of 2 in December leads to these guidelines:
Although prolonged sun exposure does not typically bother most people, children, babies, and those with sensitive skin should always have protection. The intensity of the Sun's UV radiation during midday suggests reducing time spent outdoors. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly. Watch out! The Sun's UV radiation can be nearly magnified twofold due to snow reflection.
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Frequently asked questions

How cold does it get in Seipstown in December?

In Seipstown, in December, the average high-temperature is 40.3°F (4.6°C), and the average low-temperature is 28.9°F (-1.7°C). The average heat index (a.k.a. 'felt air temperature', 'feels like'), which takes the relative humidity and factors it into the air temperature reading, in August is calculated to be 86°F (30°C).

What is the average humidity in December in Seipstown?

In Seipstown, the average relative humidity in December is 80%.

How many days does it rain in December in Seipstown?

In Seipstown, Pennsylvania, in December, it is raining for 11.2 days, with typically 2.68" (68mm) of accumulated precipitation.

How much does it snow in Seipstown in December?

In Seipstown, Pennsylvania, in December, snow falls for 5 days, with typically accumulated 2.36" (60mm) of snow.

What is the month with the shortest days in Seipstown?

With an average of 9h and 18min of daylight, December has the shortest days of the year.

How many hours of daylight does Seipstown have in December?

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

When are sunrise and sunset in December in Seipstown?

On the first day of December in Seipstown, Pennsylvania, sunrise is at 7:07 am and sunset at 4:36 pm. On the last day of the month, sunrise is at 7:26 am and sunset at 4:45 pm EST.

How long on average sun shines in December in Seipstown?

In December, the average sunshine duration in Seipstown, Pennsylvania, is 4.7h.

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

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

How high is the UV index in December in Seipstown?

The average daily maximum UV index in December in Seipstown is 2. A UV Index reading of 2, and below, represents a low health threat 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
Seipstown, PA

Average temperature in December - Seipstown, PA
  • Average high temperature in December: 40.3°F

The warmest month (with the highest average high temperature) is July (83.8°F).
The month with the lowest average high temperature is January (34.3°F).

  • Average low temperature in December: 28.9°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 (21.6°F).

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Average pressure in December
Seipstown, PA

Average pressure in December - Seipstown, 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
Seipstown, PA

Average wind speed in December - Seipstown, PA
  • Average wind speed in December: 7.6mph

The windiest month (with the highest average wind speed) is March (8.1mph).
The calmest month (with the lowest average wind speed) is August (4.9mph).

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Average humidity in December
Seipstown, PA

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

The month with the highest relative humidity is February (82%).
The months with the lowest relative humidity are April and July (76%).

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Average rainfall in December
Seipstown, PA

Average rainfall in December - Seipstown, PA
  • Average rainfall in December: 2.68"

The wettest month (with the highest rainfall) is April (2.99").
The driest month (with the least rainfall) is September (1.77").

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Average rainfall days in December
Seipstown, PA

Average rainfall days in December - Seipstown, PA
  • Average rainfall days in December: 11.2 days

The month with the highest number of rainy days is May (17.3 days).
The month with the least rainy days is January (8.5 days).

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Average snowfall in December
Seipstown, PA

Average snowfall in December - Seipstown, PA
  • Average snowfall in December: 2.36"

The month with the highest snowfall is March (4.29").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in December
Seipstown, PA

Average snowfall days in December - Seipstown, PA
  • Average snowfall days in December: 5 days

The month with the highest number of snowfall days is January (8.8 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
Seipstown, PA

Average daylight in December / Average sunshine in December - Seipstown, 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 4min

The month with the most sunshine is July (Average sunshine: 10h and 24min).
The month with the least sunshine is February (Average sunshine: 4h and 24min).

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Average sunshine days in December
Seipstown, PA

Average sunshine days in December - Seipstown, PA
  • Average sunshine days in December: 16.6 days

The month with the most sunshine days is November (17.9 days).
The month with the least sunshine days is April (11.2 days).

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Average UV index in December
Seipstown, PA

Average UV index in December - Seipstown, 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).

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Average cloud cover in December
Seipstown, PA

Average cloud cover in December - Seipstown, PA
  • Average cloud cover in December: 51

The month with the most cloud cover is February (Cloud cover 52).
The month with the least cloud cover is July (Cloud cover 33).

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Average visibility in December
Seipstown, PA

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

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

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Seipstown, Pennsylvania, USA

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