December weather forecast
Curllsville, PA

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Weather in December

December, the first month of the winter in Curllsville, is also a wintry month, with an average temperature varying between 36.5°F (2.5°C) and 25.7°F (-3.5°C).

Temperature

December's arrival correlates with a reduction in the average high-temperature, down from a chilly 45.9°F (7.7°C) in November to an icy 36.5°F (2.5°C). Throughout the month of December, Curllsville witnesses an average temperature of 25.7°F (-3.5°C).

Humidity

In December, the average relative humidity is 86%.

Rainfall

In Curllsville, in December, it is raining for 12.5 days, with typically 1.97" (50mm) of accumulated precipitation. Throughout the year, there are 169.8 rainfall days, and 27.36" (695mm) of precipitation is accumulated.

Snowfall

January through May, October through December are months with snowfall. In Curllsville, in December, snow falls for 16.9 days, with typically accumulated 5" (127mm) of snow. Throughout the year, there are 80.5 snowfall days, and 26.02" (661mm) of snow is accumulated.

Daylight

With an average of 9h and 18min of daylight, December has the shortest days of the year.
On the first day of December, sunrise is at 7:24 am and sunset at 4:49 pm. On the last day of the month, sunrise is at 7:42 am and sunset at 4:59 pm EST.

Sunshine

In Curllsville, the average sunshine in December is 2.7h.

UV index

The month with the lowest UV index is December, with an average maximum UV index of 1. A UV Index estimate of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV rays for ordinary individuals.
Note: The maximum daily UV index, 1 in December, converts into the following recommendations:
Babies, children, and individuals with sensitive skin should always have protection against extended sun exposure. For health reasons, it's advisable to reduce direct sun exposure during peak hours around midday. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses. Be advised! The UV radiation from the Sun can be almost doubled due to the reflective properties of snow.

Frequently asked questions

How cold is it in December?

An average high-temperature, in December, in Curllsville, is 36.5°F (2.5°C) and the average low-temperature is 25.7°F (-3.5°C). In July, the average heat index (a.k.a. 'real feel', 'felt air temperature'), which calculates the temperature value influenced by the moisture in the air, is evaluated at 86°F (30°C).

What is the average humidity in December in Curllsville?

In Curllsville, the average relative humidity in December is 86%.

How much does it rain in December?

In Curllsville, in December, it is raining for 12.5 days, with typically 1.97" (50mm) of accumulated precipitation.

How many days does it snow in December?

In December, it is snowing for 16.9 days. Throughout December, 5" (127mm) of snow is accumulated.

What is the month with the shortest days?

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

What is the average length of the day in December?

In December, the average day length is 9h and 16min.

When is the sunrise / sunset in December?

In December, on the first day of the month, sunrise is at 7:24 am and sunset at 4:49 pm. On the last day of the month, sunrise is at 7:42 am and sunset at 4:59 pm EST.

How long on average sun shines in December?

In December, the average sunshine duration is 2.7h.

When is the lowest UV index?

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

How high is the UV index in December?

In Curllsville, the average daily maximum UV index in December is 1. A UV Index estimate 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
Curllsville, PA

Average temperature in December - Curllsville, PA
  • Average high temperature in December: 36.5°F

The warmest month (with the highest average high temperature) is July (81°F).
The month with the lowest average high temperature is January (30.2°F).

  • Average low temperature in December: 25.7°F

The month with the highest average low temperature is July (59°F).
The coldest month (with the lowest average low temperature) is January (17.8°F).

Average pressure in December
Curllsville, PA

Average pressure in December - Curllsville, 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).

Average wind speed in December
Curllsville, PA

Average wind speed in December - Curllsville, PA
  • Average wind speed in December: 7.8mph

The windiest month (with the highest average wind speed) is January (8.3mph).
The calmest month (with the lowest average wind speed) is August (5.2mph).

Average humidity in December
Curllsville, PA

Average humidity in December - Curllsville, PA
  • Average humidity in December: 86%

The months with the highest relative humidity are January and February (88%).
The month with the lowest relative humidity is July (78%).

Average rainfall in December
Curllsville, PA

Average rainfall in December - Curllsville, PA
  • Average rainfall in December: 1.97"

The wettest month (with the highest rainfall) is April (3.15").
The driest month (with the least rainfall) is August (1.69").

Average rainfall days in December
Curllsville, PA

Average rainfall days in December - Curllsville, PA
  • Average rainfall days in December: 12.5 days

The month with the highest number of rainy days is May (19 days).
The month with the least rainy days is January (7.5 days).

Average snowfall in December
Curllsville, PA

Average snowfall in December - Curllsville, PA
  • Average snowfall in December: 5"

The month with the highest snowfall is January (7.09").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in December
Curllsville, PA

Average snowfall days in December - Curllsville, PA
  • Average snowfall days in December: 16.9 days

The month with the highest number of snowfall days is January (21.3 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in December / Average sunshine in December - Curllsville, 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: 2h and 4min

The month with the most sunshine is August (Average sunshine: 9h and 54min).
The month with the least sunshine is January (Average sunshine: 2h and 24min).

Average sunshine days in December
Curllsville, PA

Average sunshine days in December - Curllsville, PA
  • Average sunshine days in December: 6.6 days

The month with the most sunshine days is September (14 days).
The month with the least sunshine days is February (5.7 days).

Average UV index in December
Curllsville, PA

Average UV index in December - Curllsville, 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).

Average cloud cover in December
Curllsville, PA

Average cloud cover in December - Curllsville, PA
  • Average cloud cover in December: 72

The month with the most cloud cover is January (Cloud cover 75).
The months with the least cloud cover are July and August (Cloud cover 38).

Average visibility in December
Curllsville, PA

Average visibility in December - Curllsville, PA
  • Average visibility in December: 4mi

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

Curllsville, Pennsylvania, USA

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