December weather forecast
Millersdale, PA

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Weather in December

December, the first month of the winter in Millersdale, is also a wintry month, with an average temperature fluctuating between 27.9°F (-2.3°C) and 39°F (3.9°C).

Temperature

The average high-temperature drops in December, from November's frosty 48.7°F (9.3°C) to an icy 39°F (3.9°C). An average low-temperature of 27.9°F (-2.3°C) is noted during the month of December.

Humidity

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

Rainfall

In Millersdale, Pennsylvania, in December, it is raining for 13.5 days, with typically 3.07" (78mm) of accumulated precipitation. In Millersdale, Pennsylvania, during the entire year, the rain falls for 186 days and collects up to 34.84" (885mm) of precipitation.

Snowfall

Months with snowfall are January through May, October through December. In December, it is snowing for 12.8 days. Throughout December, 5.67" (144mm) of snow is accumulated. In Millersdale, during the entire year, snow falls for 63.3 days and aggregates up to 27.44" (697mm) of snow.

Daylight

With an average of 9h and 24min of daylight, December has the shortest days of the year.
On the first day of the month, sunrise is at 7:22 am and sunset at 4:53 pm. On the last day of December, sunrise is at 7:41 am and sunset at 5:02 pm EST.

Sunshine

In Millersdale, the average sunshine in December is 3.5h.

UV index

With an average maximum UV index of 1, December is the month with the lowest UV index. A UV Index of 2, and less, symbolizes a low threat to health from unprotected exposure to Sun's UV rays for the average person.
Note: An average maximum UV index of 1 in December leads to these recommendations:
Babies, children, and those with sensitive skin should always avoid extended periods in the sun. Avoid the Sun's strongest UV rays by seeking shade and limiting exposure during midday. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
Updated: Aug 11, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How cold is December?

The high-temperature, in December, in Millersdale, is 39°F (3.9°C), while the low-temperature averages to 27.9°F (-2.3°C). The average heat index (a.k.a. 'feels like', 'felt air temperature'), which calculates the temperature value influenced by the moisture in the air, in August is evaluated at 86°F (30°C).

What is the average humidity in December?

In December, the average relative humidity is 84%.

How much does it rain in December?

In Millersdale, in December, during 13.5 rainfall days, 3.07" (78mm) of precipitation is typically accumulated.

How many days does it snow in December?

In Millersdale, in December, during 12.8 snowfall days, 5.67" (144mm) 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 in Millersdale is 9h and 22min.

When are sunrise and sunset in December?

On the first day of December in Millersdale, sunrise is at 7:22 am and sunset at 4:53 pm. On the last day of the month, sunrise is at 7:41 am and sunset at 5:02 pm EST.

How many hours of sunshine does Millersdale have in December?

In December, the average sunshine duration 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 in Millersdale.

What is the UV index intensity in December?

The average daily maximum UV index in December in Millersdale, Pennsylvania, is 1. A UV Index reading of 2, and below, represents a minimal health vulnerability 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
Millersdale, PA

Average temperature in December - Millersdale, PA
  • Average high temperature in December: 39°F

The warmest month (with the highest average high temperature) is July (82°F).
The month with the lowest average high temperature is January (32.9°F).

  • Average low temperature in December: 27.9°F

The month with the highest average low temperature is July (60.6°F).
The coldest month (with the lowest average low temperature) is January (20.3°F).

Average pressure in December
Millersdale, PA

Average pressure in December - Millersdale, PA
  • Average pressure in December: 30.11"Hg

The month with the highest atmospheric pressure is November (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).

Average wind speed in December
Millersdale, PA

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

The windiest month (with the highest average wind speed) is January (8.5mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).

Average humidity in December
Millersdale, PA

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

The months with the highest relative humidity are January and February (85%).
The months with the lowest relative humidity are April, July and August (77%).

Average rainfall in December
Millersdale, PA

Average rainfall in December - Millersdale, PA
  • Average rainfall in December: 3.07"

The wettest month (with the highest rainfall) is May (3.74").
The driest month (with the least rainfall) is November (2.01").

Average rainfall days in December
Millersdale, PA

Average rainfall days in December - Millersdale, PA
  • Average rainfall days in December: 13.5 days

The month with the highest number of rainy days is May (20.9 days).
The month with the least rainy days is January (9.8 days).

Average snowfall in December
Millersdale, PA

Average snowfall in December - Millersdale, PA
  • Average snowfall in December: 5.67"

The month with the highest snowfall is January (6.65").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in December
Millersdale, PA

Average snowfall days in December - Millersdale, PA
  • Average snowfall days in December: 12.8 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
Millersdale, PA

Average daylight in December / Average sunshine in December - Millersdale, 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
Millersdale, PA

Average sunshine days in December - Millersdale, PA
  • Average sunshine days in December: 8.8 days

The month with the most sunshine days is November (13.5 days).
The month with the least sunshine days is January (6.4 days).

Average UV index in December
Millersdale, PA

Average UV index in December - Millersdale, 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
Millersdale, PA

Average cloud cover in December - Millersdale, 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
Millersdale, PA

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

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

Millersdale, Pennsylvania, USA

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