December weather forecast
Emigsville, PA

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Weather in December

The first month of the winter, December, is also an icy month in Emigsville, Pennsylvania, with an average temperature varying between 41.9°F (5.5°C) and 29.7°F (-1.3°C).

Temperature

December brings a drop in Emigsville's average high-temperature, falling from a fresh 50.9°F (10.5°C) in November to a cold 41.9°F (5.5°C). The nighttime temperature, during December, averages of 29.7°F (-1.3°C).

Humidity

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

Rainfall

In December, the rain falls for 9.4 days. Throughout December, 1.26" (32mm) of precipitation is accumulated. Throughout the year, there are 134.1 rainfall days, and 17.83" (453mm) of precipitation is accumulated.

Snowfall

January through April, October through December are months with snowfall. In Emigsville, Pennsylvania, during December, snow falls for 3.5 days and regularly aggregates up to 0.98" (25mm) of snow. In Emigsville, during the entire year, snow falls for 20.6 days and aggregates up to 7.64" (194mm) of snow.

Daylight

The month with the shortest days is December, with an average of 9h and 24min of daylight.
On the first day of December, sunrise is at 7:10 am and sunset at 4:42 pm. On the last day of the month, sunrise is at 7:28 am and sunset at 4:51 pm EST.

Sunshine

In December, the average sunshine is 4.8h.

UV index

January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index reading of 2, and below, represents a low health risk from exposure to the Sun's UV radiation for ordinary individuals.
Note: The maximum UV index of 2 during December leads to these instructions:
Despite the majority tolerating prolonged sun exposure, those with sensitive skin, infants, and children demand continual protection. It's crucial to reduce time in the direct Sun around mid-day due to the intense solar radiation. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays. Heads up! The UV radiation from the Sun can almost be doubled by snow reflection.
Updated: Aug 28, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How cold is it in December?

In Emigsville, 41.9°F (5.5°C) is the average high-temperature and 29.7°F (-1.3°C) is the average low-temperature during December. In August, the average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which represents the influence of relative humidity on air temperature, is calculated to be 86°F (30°C).

What is the average humidity in December?

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

How many days does it rain in December?

In December, the rain falls for 9.4 days. Throughout December, 1.26" (32mm) of precipitation is accumulated.

How many days does it snow in December?

In Emigsville, in December, during 3.5 snowfall days, 0.98" (25mm) of snow is typically accumulated.

What is the month with the shortest days in Emigsville?

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

How many hours of daylight does Emigsville have in December?

In Emigsville, the average day length in December is 9h and 23min.

What time are sunrise and sunset in December?

On the first day of December in Emigsville, sunrise is at 7:10 am and sunset at 4:42 pm. On the last day of the month, sunrise is at 7:28 am and sunset at 4:51 pm EST.

How long on average sun shines in December?

In December, the average sunshine duration is 4.8h.

When is the lowest UV index?

January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index.

What is the UV index intensity in December?

In December, the average daily maximum UV index is 2. A UV Index of 2, and less, symbolizes a low health risk from unprotected exposure to 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
Emigsville, PA

Average temperature in December - Emigsville, PA
  • Average high temperature in December: 41.9°F

The warmest month (with the highest average high temperature) is July (83.3°F).
The month with the lowest average high temperature is January (35.4°F).

  • Average low temperature in December: 29.7°F

The month with the highest average low temperature is July (64.2°F).
The coldest month (with the lowest average low temperature) is January (22.6°F).

Average pressure in December
Emigsville, PA

Average pressure in December - Emigsville, 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
Emigsville, PA

Average wind speed in December - Emigsville, PA
  • Average wind speed in December: 8.1mph

The windiest month (with the highest average wind speed) is March (8.7mph).
The calmest month (with the lowest average wind speed) is August (5mph).

Average humidity in December
Emigsville, PA

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

The months with the highest relative humidity are February, May and October (80%).
The months with the lowest relative humidity are March and April (76%).

Average rainfall in December
Emigsville, PA

Average rainfall in December - Emigsville, PA
  • Average rainfall in December: 1.26"

The wettest months (with the highest rainfall) are July and August (2.01").
The driest month (with the least rainfall) is January (1.06").

Average rainfall days in December
Emigsville, PA

Average rainfall days in December - Emigsville, PA
  • Average rainfall days in December: 9.4 days

The month with the highest number of rainy days is May (16 days).
The month with the least rainy days is January (6 days).

Average snowfall in December
Emigsville, PA

Average snowfall in December - Emigsville, PA
  • Average snowfall in December: 0.98"

The month with the highest snowfall is January (2.4").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days in December
Emigsville, PA

Average snowfall days in December - Emigsville, PA
  • Average snowfall days in December: 3.5 days

The month with the highest number of snowfall days is January (6.8 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in December / Average sunshine in December - Emigsville, 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: 4h and 5min

The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is February (Average sunshine: 4h and 36min).

Average sunshine days in December
Emigsville, PA

Average sunshine days in December - Emigsville, PA
  • Average sunshine days in December: 18.5 days

The month with the most sunshine days is November (20.1 days).
The month with the least sunshine days is May (12.8 days).

Average UV index in December
Emigsville, PA

Average UV index in December - Emigsville, PA
  • Average UV index in December: 2

The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).

Average cloud cover in December
Emigsville, PA

Average cloud cover in December - Emigsville, PA
  • Average cloud cover in December: 48

The months with the most cloud cover are February and March (Cloud cover 49).
The month with the least cloud cover is July (Cloud cover 31).

Average visibility in December
Emigsville, PA

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

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

Emigsville, Pennsylvania, USA

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