December weather forecast
Morrisdale, PA

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Weather in December

The first month of the winter, December, is still a cold month in Morrisdale, Pennsylvania, with temperature in the range of an average low of 25.9°F (-3.4°C) and an average high of 36.3°F (2.4°C).

Temperature

The shift from November to December corresponds with a decrease in the average high-temperature, down to an icy 36.3°F (2.4°C) from a chilly 45.9°F (7.7°C). Throughout December, Morrisdale's nights cool down to an average of 25.9°F (-3.4°C).

Humidity

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

Rainfall

In Morrisdale, Pennsylvania, in December, during 11.4 rainfall days, 1.57" (40mm) of precipitation is typically accumulated. In Morrisdale, during the entire year, the rain falls for 159 days and collects up to 23.46" (596mm) of precipitation.

Snowfall

Months with snowfall are January through May, October through December. In December, it is snowing for 13.8 days. Throughout December, 4.13" (105mm) of snow is accumulated. Throughout the year, in Morrisdale, there are 67.7 snowfall days, and 23.54" (598mm) of snow is accumulated.

Daylight

The month with the shortest days in Morrisdale is December, with an average of 9h and 18min of daylight.
On the first day of December in Morrisdale, sunrise is at 7:18 am and sunset at 4:45 pm. On the last day of the month, sunrise is at 7:37 am and sunset at 4:54 pm EST.

Sunshine

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 in Morrisdale. A UV Index value of 2, and less, symbolizes a low health risk from exposure to the Sun's UV rays for ordinary individuals.
Note: The maximum daily UV index of 1 in December interprets into the following recommendations:
Despite the majority tolerating prolonged sun exposure, those with sensitive skin, infants, and children demand continual protection. Direct Sun exposure should be minimized especially during midday when radiation is most intense. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses. Note well! The intensity of the Sun's UV rays can be nearly doubled by snow reflection.
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Frequently asked questions

How cold is December in Morrisdale?

In December, in Morrisdale, the average high-temperature is 36.3°F (2.4°C), and the average low-temperature is 25.9°F (-3.4°C). The average heat index (a.k.a. 'real feel', 'feels like'), which combines relative humidity and air temperature, in July is estimated at 86°F (30°C).

What is the average humidity in December in Morrisdale?

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

How many days does it rain in December in Morrisdale?

In December, in Morrisdale, Pennsylvania, the rain falls for 11.4 days. Throughout December, 1.57" (40mm) of precipitation is accumulated.

How many days does it snow in December in Morrisdale?

In Morrisdale, Pennsylvania, in December, during 13.8 snowfall days, 4.13" (105mm) of snow is typically accumulated.

What is the month with the shortest days in Morrisdale?

The month with the shortest days in Morrisdale is December, with an average of 9h and 18min of daylight.

What is the average length of the day in December in Morrisdale?

In Morrisdale, Pennsylvania, the average day length in December is 9h and 17min.

When are sunrise and sunset in December in Morrisdale?

On the first day of December in Morrisdale, sunrise is at 7:18 am and sunset at 4:45 pm. On the last day of the month, sunrise is at 7:37 am and sunset at 4:54 pm EST.

How long on average sun shines in December in Morrisdale?

The average sunshine duration in December is 3.5h.

When is the lowest UV index in Morrisdale?

December is the month with the lowest UV index in Morrisdale, Pennsylvania, with an average maximum UV index of 1.

What is the UV index intensity in December in Morrisdale?

In December, the average daily maximum UV index in Morrisdale is 1. A UV Index of 2, and less, symbolizes 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
Morrisdale, PA

Average temperature in December - Morrisdale, PA
  • Average high temperature in December: 36.3°F

The warmest month (with the highest average high temperature) is July (81.3°F).
The month with the lowest average high temperature is January (30.6°F).

  • Average low temperature in December: 25.9°F

The month with the highest average low temperature is July (59.2°F).
The coldest month (with the lowest average low temperature) is January (18°F).

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Average pressure in December
Morrisdale, PA

Average pressure in December - Morrisdale, 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 (29.95"Hg).

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Average wind speed in December
Morrisdale, PA

Average wind speed in December - Morrisdale, 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 (5mph).

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Average humidity in December
Morrisdale, PA

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

The month with the highest relative humidity is February (85%).
The month with the lowest relative humidity is July (76%).

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Average rainfall in December
Morrisdale, PA

Average rainfall in December - Morrisdale, PA
  • Average rainfall in December: 1.57"

The wettest month (with the highest rainfall) is May (2.87").
The driest month (with the least rainfall) is November (1.42").

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Average rainfall days in December
Morrisdale, PA

Average rainfall days in December - Morrisdale, PA
  • Average rainfall days in December: 11.4 days

The month with the highest number of rainy days is May (17.9 days).
The month with the least rainy days is January (8.1 days).

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Average snowfall in December
Morrisdale, PA

Average snowfall in December - Morrisdale, PA
  • Average snowfall in December: 4.13"

The month with the highest snowfall is January (6.02").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in December
Morrisdale, PA

Average snowfall days in December - Morrisdale, PA
  • Average snowfall days in December: 13.8 days

The month with the highest number of snowfall days is January (18.3 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
Morrisdale, PA

Average daylight in December / Average sunshine in December - Morrisdale, PA
  • Average daylight in December: 9h and 2min

The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).

  • Average sunshine in December: 3h and 3min

The months with the most sunshine are July and August (Average sunshine: 9h and 54min).
The month with the least sunshine is January (Average sunshine: 3h and 24min).

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Average sunshine days in December
Morrisdale, PA

Average sunshine days in December - Morrisdale, PA
  • Average sunshine days in December: 10.5 days

The month with the most sunshine days is September (15.4 days).
The month with the least sunshine days is February (8.7 days).

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Average UV index in December
Morrisdale, PA

Average UV index in December - Morrisdale, PA
  • Average UV index in December: 1

The months with the highest UV index are May, June, July and August (UV index 5).
The month with the lowest UV index is December (UV index 1).

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Average cloud cover in December
Morrisdale, PA

Average cloud cover in December - Morrisdale, PA
  • Average cloud cover in December: 64

The month with the most cloud cover is January (Cloud cover 67).
The months with the least cloud cover are July and August (Cloud cover 38).

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Average visibility in December
Morrisdale, PA

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

The months with the highest visibility are January, March, April, May, June, July, August, October, November and December (5mi).
The months with the lowest visibility are February and September (4mi).

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Morrisdale, Pennsylvania, USA

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