December weather forecast
Eastvale, PA

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Weather in December

The first month of the winter, December, is also a wintry month in Eastvale, Pennsylvania, with an average temperature fluctuating between 38.3°F (3.5°C) and 27.3°F (-2.6°C).

Temperature

During Eastvale's transition into December, the average high-temperature lessens, moving from a chilly 48.2°F (9°C) in November to a wintry 38.3°F (3.5°C). Throughout December, Eastvale records an average temperature of 27.3°F (-2.6°C) at night.

Humidity

In December, the average relative humidity is 85%.

Rainfall

In Eastvale, during December, the rain falls for 12.8 days and regularly aggregates up to 2.83" (72mm) of precipitation. In Eastvale, during the entire year, the rain falls for 183.3 days and collects up to 35" (889mm) of precipitation.

Snowfall

Months with snowfall are January through May, October through December. In Eastvale, in December, snow falls for 14.5 days, with typically accumulated 5.31" (135mm) of snow. Throughout the year, there are 69.5 snowfall days, and 26.93" (684mm) 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 7:26 am and sunset at 4:54 pm. On the last day of the month, sunrise is at 7:45 am and sunset at 5:03 pm EST.

Sunshine

The average sunshine in December is 3.3h.

UV index

The month with the lowest UV index is December, with an average maximum UV index of 1. A UV Index value of 2, and less, symbolizes a low threat to health from unprotected exposure to Sun's UV rays for average individuals.
Note: In December, the UV index of 1 transforms into the following advice:
Despite the majority tolerating prolonged sun exposure, those with sensitive skin, infants, and children demand continual protection. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key. Alert! The snow's reflection can amplify the UV radiation of the Sun nearly twice.

Frequently asked questions

How cold is it in Eastvale in December?

December temperatures vary between a high-temperature of 38.3°F (3.5°C) and a low-temperature of 27.3°F (-2.6°C). The average heat index (a.k.a. 'real feel', 'apparent temperature'), which takes the relative humidity and factors it into the air temperature reading, in August is evaluated at 86°F (30°C).

What is the average humidity in December?

The average relative humidity in December is 85%.

How many days does it rain in December?

In December, the rain falls for 12.8 days. Throughout December, 2.83" (72mm) of precipitation is accumulated.

How many days does it snow in December?

In December, it is snowing for 14.5 days. Throughout December, 5.31" (135mm) 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 19min.

What time are sunrise and sunset in December?

On the first day of December, sunrise is at 7:26 am and sunset at 4:54 pm. On the last day of the month, sunrise is at 7:45 am and sunset at 5:03 pm EST.

How long on average sun shines in December?

In December, the average sunshine duration is 3.3h.

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.

How high is the UV index in December?

In December, the average daily maximum UV index is 1. A UV Index of 2, and less, symbolizes a minimal health vulnerability from 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
Eastvale, PA

Average temperature in December - Eastvale, PA
  • Average high temperature in December: 38.3°F

The warmest month (with the highest average high temperature) is July (82.8°F).
The month with the lowest average high temperature is January (32.2°F).

  • Average low temperature in December: 27.3°F

The month with the highest average low temperature is July (61.2°F).
The coldest month (with the lowest average low temperature) is January (19.4°F).

Average pressure in December
Eastvale, PA

Average pressure in December - Eastvale, 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
Eastvale, PA

Average wind speed in December - Eastvale, PA
  • Average wind speed in December: 7.5mph

The windiest month (with the highest average wind speed) is January (8.1mph).
The calmest months (with the lowest average wind speed) are July and August (4.8mph).

Average humidity in December
Eastvale, PA

Average humidity in December - Eastvale, PA
  • Average humidity in December: 85%

The month with the highest relative humidity is February (86%).
The months with the lowest relative humidity are April, July and August (77%).

Average rainfall in December
Eastvale, PA

Average rainfall in December - Eastvale, PA
  • Average rainfall in December: 2.83"

The wettest month (with the highest rainfall) is April (3.62").
The driest month (with the least rainfall) is November (2.24").

Average rainfall days in December
Eastvale, PA

Average rainfall days in December - Eastvale, PA
  • Average rainfall days in December: 12.8 days

The month with the highest number of rainy days is May (20.1 days).
The month with the least rainy days is January (10 days).

Average snowfall in December
Eastvale, PA

Average snowfall in December - Eastvale, PA
  • Average snowfall in December: 5.31"

The month with the highest snowfall is February (6.81").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in December
Eastvale, PA

Average snowfall days in December - Eastvale, PA
  • Average snowfall days in December: 14.5 days

The month with the highest number of snowfall days is January (18.6 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in December / Average sunshine in December - Eastvale, 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 2min

The month with the most sunshine is August (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 2h and 48min).

Average sunshine days in December
Eastvale, PA

Average sunshine days in December - Eastvale, PA
  • Average sunshine days in December: 8.6 days

The month with the most sunshine days is November (13.6 days).
The month with the least sunshine days is February (7.3 days).

Average UV index in December
Eastvale, PA

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

The month with the highest UV index is July (UV index 6).
The month with the lowest UV index is December (UV index 1).

Average cloud cover in December
Eastvale, PA

Average cloud cover in December - Eastvale, 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 34).

Average visibility in December
Eastvale, PA

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

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

Eastvale, Pennsylvania, USA

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