December weather forecast
Gilbert, PA

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Weather in December

December, the first month of the winter in Gilbert, is also an icy month, with an average temperature fluctuating between 37°F (2.8°C) and 26.2°F (-3.2°C).

Temperature

With the onset of December, Gilbert's average high-temperature adjusts, receding from November's frosty 46.6°F (8.1°C) to a wintry 37°F (2.8°C). Gilbert experiences a nighttime temperature average of 26.2°F (-3.2°C) during December.

Humidity

The average relative humidity in December is 83%.

Rainfall

In Gilbert, in December, it is raining for 8.3 days, with typically 2.05" (52mm) of accumulated precipitation. Throughout the year, there are 143 rainfall days, and 25.91" (658mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January through May, October through December. In Gilbert, in December, during 5.1 snowfall days, 2.72" (69mm) of snow is typically accumulated. In Gilbert, during the entire year, snow falls for 31.9 days and aggregates up to 16.1" (409mm) of snow.

Daylight

December has the shortest days of the year, with an average of 9h and 18min of daylight.
On the first day of December, sunrise is at 7:07 am and sunset at 4:34 pm. On the last day of the month, sunrise is at 7:26 am and sunset at 4:43 pm EST.

Sunshine

The average sunshine in December is 4.1h.

UV index

With an average maximum UV index of 1, December is the month with the lowest UV index. A UV Index reading of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV radiation for the average person.
Note: In December, an average UV index of 1 transforms into the following instructions:
While sun exposure does not greatly affect most, individuals with fair skin, babies, and children always need vigilant safeguarding. To guard against the harmful effects of the Sun, minimize exposure during midday. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage. Attention! Nearly twice the Sun's UV radiation can be reflected by snow.
Updated: Jun 20, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How cold is it in December?

December temperatures vary between a high-temperature of 37°F (2.8°C) and a low-temperature of 26.2°F (-3.2°C). The average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which calculates the temperature value influenced by the moisture in the air, in July is calculated to be 86°F (30°C).

What is the average humidity in December?

The average relative humidity in December is 83%.

How much does it rain in December?

In Gilbert, in December, during 8.3 rainfall days, 2.05" (52mm) of precipitation is typically accumulated.

How many days does it snow in December?

In December, it is snowing for 5.1 days. Throughout December, 2.72" (69mm) of snow is accumulated.

What is the month with the shortest days?

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

What is the average length of the day in December?

The average day length in December is 9h and 17min.

When are sunrise and sunset in December?

On the first day of December, sunrise is at 7:07 am and sunset at 4:34 pm. On the last day of the month, sunrise is at 7:26 am and sunset at 4:43 pm EST.

How long on average sun shines in December?

In Gilbert, the average sunshine duration in December is 4.1h.

What is the month with the lowest UV index?

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

What is the UV index reading in December?

In Gilbert, Pennsylvania, the average daily maximum UV index in December is 1. A UV Index reading of 2, and below, represents a low health risk 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
Gilbert, PA

Average temperature in December - Gilbert, PA
  • Average high temperature in December: 37°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 (31.5°F).

  • Average low temperature in December: 26.2°F

The month with the highest average low temperature is July (60.8°F).
The coldest month (with the lowest average low temperature) is January (18.9°F).

Average pressure in December
Gilbert, PA

Average pressure in December - Gilbert, 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
Gilbert, PA

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

The windiest months (with the highest average wind speed) are January, February and March (8.3mph).
The calmest month (with the lowest average wind speed) is August (5.2mph).

Average humidity in December
Gilbert, PA

Average humidity in December - Gilbert, PA
  • Average humidity in December: 83%

The month with the highest relative humidity is February (84%).
The months with the lowest relative humidity are April and July (77%).

Average rainfall in December
Gilbert, PA

Average rainfall in December - Gilbert, PA
  • Average rainfall in December: 2.05"

The wettest month (with the highest rainfall) is July (2.83").
The driest month (with the least rainfall) is September (1.46").

Average rainfall days in December
Gilbert, PA

Average rainfall days in December - Gilbert, PA
  • Average rainfall days in December: 8.3 days

The month with the highest number of rainy days is July (16.7 days).
The month with the least rainy days is January (6.3 days).

Average snowfall in December
Gilbert, PA

Average snowfall in December - Gilbert, PA
  • Average snowfall in December: 2.72"

The month with the highest snowfall is January (4.06").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in December
Gilbert, PA

Average snowfall days in December - Gilbert, PA
  • Average snowfall days in December: 5.1 days

The month with the highest number of snowfall days is February (8.3 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in December / Average sunshine in December - Gilbert, 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: 4h and 1min

The month with the most sunshine is July (Average sunshine: 9h and 48min).
The month with the least sunshine is February (Average sunshine: 3h and 54min).

Average sunshine days in December
Gilbert, PA

Average sunshine days in December - Gilbert, PA
  • Average sunshine days in December: 18.2 days

The month with the most sunshine days is November (19.4 days).
The month with the least sunshine days is May (11.9 days).

Average UV index in December
Gilbert, PA

Average UV index in December - Gilbert, 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
Gilbert, PA

Average cloud cover in December - Gilbert, PA
  • Average cloud cover in December: 57

The month with the most cloud cover is February (Cloud cover 58).
The month with the least cloud cover is July (Cloud cover 38).

Average visibility in December
Gilbert, PA

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

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

Gilbert, Pennsylvania, USA

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