December weather forecast
Latrobe, PA

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Weather in December

The first month of the winter, December, is also an icy month in Latrobe, Pennsylvania, with an average temperature varying between 38.8°F (3.8°C) and 27.5°F (-2.5°C).

Temperature

The transition into December indicates a reduction in the average high-temperature, down to an icy 38.8°F (3.8°C) from November's chilly 48°F (8.9°C). During December, Latrobe consistently records a temperature low averaging a freezing cold 27.5°F (-2.5°C).

Humidity

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

Rainfall

In Latrobe, during December, the rain falls for 11.5 days and regularly aggregates up to 2.2" (56mm) of precipitation. In Latrobe, during the entire year, the rain falls for 173.8 days and collects up to 25.55" (649mm) of precipitation.

Snowfall

January through April, October through December are months with snowfall. In Latrobe, during December, snow falls for 11.8 days and regularly aggregates up to 4.17" (106mm) of snow. Throughout the year, there are 58.9 snowfall days, and 18.62" (473mm) of snow is accumulated.

Daylight

With an average of 9h and 24min of daylight, December has the shortest days of the year in Latrobe.
On the first day of December, sunrise is at 7:21 am and sunset at 4:51 pm. On the last day of the month, sunrise is at 7:40 am and sunset at 5:01 pm EST.

Sunshine

In December, the average sunshine is 3.5h.

UV index

The month with the lowest UV index in Latrobe is December, with an average maximum UV index of 1. A UV Index reading of 2, and below, represents a minimal health vulnerability from unprotected exposure to Sun's UV rays for the average person.
Note: In December, the maximum UV index of 1 suggests this advice:
Sun exposure does not present considerable issues for many, yet infants, fair-skinned people, and children necessitate constant protection. Exposing oneself to the midday Sun can be harmful due to the strong UV radiation; limit your time outside. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection. Heads up! The UV radiation from the Sun can almost be doubled by snow reflection.

Frequently asked questions

How cold is it in December?

In Latrobe, in December, the average high-temperature is 38.8°F (3.8°C), and the average low-temperature is 27.5°F (-2.5°C). In July, the average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which combines air temperature and relative humidity, is computed to be 87.8°F (31°C).

What is the average humidity in December?

In December, the average relative humidity is 84%.

How much does it rain in December?

In December, the rain falls for 11.5 days. Throughout December, 2.2" (56mm) of precipitation is accumulated.

How many days does it snow in December?

In Latrobe, in December, during 11.8 snowfall days, 4.17" (106mm) 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 is 9h and 21min.

What time are sunrise and sunset in December?

On the first day of December, sunrise is at 7:21 am and sunset at 4:51 pm. On the last day of the month, sunrise is at 7:40 am and sunset at 5:01 pm EST.

How many hours of sunshine does Latrobe have in December?

The average sunshine duration in December is 3.5h.

When is the lowest UV index?

With an average maximum UV index of 1, December is the month with the lowest UV index.

What is the UV index intensity in December?

In Latrobe, the average daily maximum UV index in December is 1. A UV Index of 2, and less, symbolizes a low health threat 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
Latrobe, PA

Average temperature in December - Latrobe, PA
  • Average high temperature in December: 38.8°F

The warmest month (with the highest average high temperature) is July (81.7°F).
The month with the lowest average high temperature is January (32.5°F).

  • Average low temperature in December: 27.5°F

The month with the highest average low temperature is July (60.3°F).
The coldest month (with the lowest average low temperature) is January (20.1°F).

Average pressure in December
Latrobe, PA

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

The month with the highest atmospheric pressure is November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).

Average wind speed in December
Latrobe, PA

Average wind speed in December - Latrobe, PA
  • Average wind speed in December: 8.2mph

The windiest month (with the highest average wind speed) is January (8.8mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).

Average humidity in December
Latrobe, PA

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

The month with the highest relative humidity is February (86%).
The months with the lowest relative humidity are April, June, July and August (78%).

Average rainfall in December
Latrobe, PA

Average rainfall in December - Latrobe, PA
  • Average rainfall in December: 2.2"

The wettest month (with the highest rainfall) is May (3.03").
The driest month (with the least rainfall) is November (1.38").

Average rainfall days in December
Latrobe, PA

Average rainfall days in December - Latrobe, PA
  • Average rainfall days in December: 11.5 days

The month with the highest number of rainy days is May (20.4 days).
The month with the least rainy days is January (9.5 days).

Average snowfall in December
Latrobe, PA

Average snowfall in December - Latrobe, PA
  • Average snowfall in December: 4.17"

The month with the highest snowfall is January (4.96").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days in December
Latrobe, PA

Average snowfall days in December - Latrobe, PA
  • Average snowfall days in December: 11.8 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
Latrobe, PA

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

Average sunshine days in December - Latrobe, PA
  • Average sunshine days in December: 9.9 days

The month with the most sunshine days is November (14.4 days).
The month with the least sunshine days is January (7 days).

Average UV index in December
Latrobe, PA

Average UV index in December - Latrobe, 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
Latrobe, PA

Average cloud cover in December - Latrobe, 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
Latrobe, PA

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

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

Latrobe, Pennsylvania, USA

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