December weather forecast
Lewisville, PA

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Weather in December

The first month of the winter, December, is also a frosty month in Lewisville, Pennsylvania, with an average temperature fluctuating between 32.9°F (0.5°C) and 44.1°F (6.7°C).

Temperature

A subtle shift in Lewisville's weather is observed as November turns into December, with the average high temperature reducing from a fresh 52.9°F (11.6°C) to a frosty 44.1°F (6.7°C). In December, the average low-temperature is a wintry 32.9°F (0.5°C).

Humidity

In December, the average relative humidity is 77%.

Rainfall

In Lewisville, during December, the rain falls for 10.9 days and regularly aggregates up to 3.11" (79mm) of precipitation. In Lewisville, during the entire year, the rain falls for 168.9 days and collects up to 34.84" (885mm) of precipitation.

Snowfall

January through May, November and December are months with snowfall. In Lewisville, in December, snow falls for 2.9 days, with typically accumulated 1.26" (32mm) of snow. Throughout the year, there are 18.1 snowfall days, and 8.86" (225mm) of snow is accumulated.

Daylight

The month with the shortest days is December, with an average of 9h and 24min of daylight.
On the first day of the month, sunrise is at 7:05 am and sunset at 4:39 pm. On the last day of December, sunrise is at 7:24 am and sunset at 4:49 pm EST.

Sunshine

In Lewisville, the average sunshine in December is 5.1h.

UV index

The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2. A UV Index estimate of 2, and below, represents a low health risk from exposure to the Sun's UV radiation for average individuals.
Note: An average UV index of 2 in December transforms into this advice:
Those with sensitive skin, infants, and children require constant safeguarding from prolonged sun exposure. Being in direct Sun during midday can be harmful due to intense solar radiation; take precautions. A hat with a broad brim is indispensable, filtering out up to half of UV rays. Be careful! The Sun's UV radiation can nearly be doubled by the reflective quality of snow.

Frequently asked questions

How cold is December?

An average high-temperature, in December, in Lewisville, is 44.1°F (6.7°C) and the average low-temperature is 32.9°F (0.5°C). In August, the average heat index (a.k.a. 'feels like', 'real feel'), which represents the influence of relative humidity on air temperature, is appraised at 89.6°F (32°C).

What is the average humidity in December?

In Lewisville, the average relative humidity in December is 77%.

How much does it rain in December?

In Lewisville, in December, it is raining for 10.9 days, with typically 3.11" (79mm) of accumulated precipitation.

How many days does it snow in December?

In December, it is snowing for 2.9 days. Throughout December, 1.26" (32mm) of snow is accumulated.

What is the month with the shortest days?

The month with the shortest days is December, with an average of 9h and 24min of daylight.

How many hours of daylight does Lewisville have in December?

In December, the average day length is 9h and 25min.

What time are sunrise and sunset in December?

On the first day of December, sunrise is at 7:05 am and sunset at 4:39 pm. On the last day of the month, sunrise is at 7:24 am and sunset at 4:49 pm EST.

How many hours of sunshine does Lewisville have in December?

In Lewisville, Pennsylvania, the average sunshine duration in December is 5.1h.

When is the lowest UV index in Lewisville?

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

How high is the UV index in December?

In December, the average daily maximum UV index is 2. A UV Index reading of 2, and below, represents a minimal hazard to health from exposure to the Sun's 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
Lewisville, PA

Average temperature in December - Lewisville, PA
  • Average high temperature in December: 44.1°F

The warmest month (with the highest average high temperature) is July (84.7°F).
The month with the lowest average high temperature is January (37.8°F).

  • Average low temperature in December: 32.9°F

The month with the highest average low temperature is July (68°F).
The coldest month (with the lowest average low temperature) is January (25.7°F).

Average pressure in December
Lewisville, PA

Average pressure in December - Lewisville, 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
Lewisville, PA

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

The windiest months (with the highest average wind speed) are February and March (8.8mph).
The calmest month (with the lowest average wind speed) is August (5.3mph).

Average humidity in December
Lewisville, PA

Average humidity in December - Lewisville, PA
  • Average humidity in December: 77%

The months with the highest relative humidity are May, September and October (78%).
The month with the lowest relative humidity is April (73%).

Average rainfall in December
Lewisville, PA

Average rainfall in December - Lewisville, PA
  • Average rainfall in December: 3.11"

The wettest month (with the highest rainfall) is August (4.17").
The driest month (with the least rainfall) is January (2.24").

Average rainfall days in December
Lewisville, PA

Average rainfall days in December - Lewisville, PA
  • Average rainfall days in December: 10.9 days

The month with the highest number of rainy days is May (19 days).
The month with the least rainy days is January (9.3 days).

Average snowfall in December
Lewisville, PA

Average snowfall in December - Lewisville, PA
  • Average snowfall in December: 1.26"

The month with the highest snowfall is March (2.76").
The months with the least snowfall are June, July, August, September and October (0").

Average snowfall days in December
Lewisville, PA

Average snowfall days in December - Lewisville, PA
  • Average snowfall days in December: 2.9 days

The month with the highest number of snowfall days is January (5.4 days).
The months with the least snowfall days are June, July, August, September and October (0 days).

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

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

The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 24min).

  • Average sunshine in December: 5h and 1min

The month with the most sunshine is July (Average sunshine: 10h and 48min).
The month with the least sunshine is February (Average sunshine: 5h and 0min).

Average sunshine days in December
Lewisville, PA

Average sunshine days in December - Lewisville, PA
  • Average sunshine days in December: 16.8 days

The month with the most sunshine days is November (18.5 days).
The month with the least sunshine days is May (9.7 days).

Average UV index in December
Lewisville, PA

Average UV index in December - Lewisville, 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
Lewisville, PA

Average cloud cover in December - Lewisville, PA
  • Average cloud cover in December: 45

The month with the most cloud cover is March (Cloud cover 46).
The month with the least cloud cover is July (Cloud cover 30).

Average visibility in December
Lewisville, PA

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

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

Lewisville, Pennsylvania, USA

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