December weather forecast
Harlingen, NJ

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Weather in December

December, the first month of the winter in Harlingen, is also a frosty month, with an average temperature fluctuating between 31.1°F (-0.5°C) and 43°F (6.1°C).

Temperature

With the beginning of December, the average high-temperature shows a small decrease, transitioning from a cool 51.8°F (11°C) in November to a frosty 43°F (6.1°C). Nighttime temperatures in December average to a freezing cold 31.1°F (-0.5°C).

Humidity

The average relative humidity in December is 78%.

Rainfall

In Harlingen, in December, it is raining for 8.2 days, with typically 1.26" (32mm) of accumulated precipitation. In Harlingen, during the entire year, the rain falls for 119.3 days and collects up to 12.72" (323mm) of precipitation.

Snowfall

January through May, November and December are months with snowfall. In Harlingen, in December, during 2.7 snowfall days, 0.75" (19mm) of snow is typically accumulated. Throughout the year, there are 16.4 snowfall days, and 4.41" (112mm) of snow is accumulated.

Daylight

With an average of 9h and 18min of daylight, December has the shortest days of the year in Harlingen, New Jersey.
On the first day of the month, sunrise is at 7:03 am and sunset at 4:32 pm. On the last day of December, in Harlingen, sunrise is at 7:21 am and sunset at 4:42 pm EST.

Sunshine

The average sunshine in December in Harlingen is 5h.

UV index

The months with the lowest UV index are January through March, November and December, with an average maximum UV index of 2. A UV Index reading of 2, and below, represents a minimal health vulnerability from unprotected exposure to Sun's UV rays for the ordinary person.
Note: A maximum high daily UV index of 2 during December translates into the following directions:
Although the majority can endure up to an hour in the sun without burns, children always require sun protection. The midday Sun can be dangerous due to its intense radiation; always find shade and reduce exposure. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage. Take into account! The reflection from snow can nearly double the Sun's UV radiation intensity.
Updated: Feb 13, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How cold is it in Harlingen in December?

During December, Harlingen experiences an average high-temperature of 43°F (6.1°C) and a low-temperature of 31.1°F (-0.5°C). The average heat index (a.k.a. 'real feel', 'felt air temperature'), which represents the influence of relative humidity on air temperature, in August is estimated at 89.6°F (32°C).

What is the average humidity in December in Harlingen?

In December, the average relative humidity is 78%.

How many days does it rain in December in Harlingen?

In Harlingen, in December, during 8.2 rainfall days, 1.26" (32mm) of precipitation is typically accumulated.

How many days does it snow in December in Harlingen?

In December, it is snowing for 2.7 days. Throughout December, 0.75" (19mm) of snow is accumulated.

What is the month with the shortest days in Harlingen?

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

How many hours of daylight does Harlingen have in December?

The average day length in December in Harlingen is 9h and 20min.

When is the sunrise / sunset in December in Harlingen?

On the first day of December in Harlingen, New Jersey, sunrise is at 7:03 am and sunset at 4:32 pm. On the last day of the month, sunrise is at 7:21 am and sunset at 4:42 pm EST.

How long on average sun shines in December in Harlingen?

In December, the average sunshine duration is 5h.

When is the lowest UV index in Harlingen?

January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Harlingen.

How high is the UV index in December in Harlingen?

In December, the average daily maximum UV index in Harlingen is 2. A UV Index value of 2, and less, symbolizes a minimal health vulnerability 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
Harlingen, NJ

Average temperature in December - Harlingen, NJ
  • Average high temperature in December: 43°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 (36.9°F).

  • Average low temperature in December: 31.1°F

The month with the highest average low temperature is July (66.9°F).
The coldest month (with the lowest average low temperature) is January (24.3°F).

Average pressure in December
Harlingen, NJ

Average pressure in December - Harlingen, NJ
  • Average pressure in December: 30.08"Hg

The month with the highest atmospheric pressure is November (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

Average wind speed in December
Harlingen, NJ

Average wind speed in December - Harlingen, NJ
  • Average wind speed in December: 7.8mph

The windiest month (with the highest average wind speed) is March (8.8mph).
The calmest month (with the lowest average wind speed) is August (5.4mph).

Average humidity in December
Harlingen, NJ

Average humidity in December - Harlingen, NJ
  • Average humidity in December: 78%

The month with the highest relative humidity is October (79%).
The month with the lowest relative humidity is April (73%).

Average rainfall in December
Harlingen, NJ

Average rainfall in December - Harlingen, NJ
  • Average rainfall in December: 1.26"

The wettest month (with the highest rainfall) is July (1.69").
The driest month (with the least rainfall) is September (0.67").

Average rainfall days in December
Harlingen, NJ

Average rainfall days in December - Harlingen, NJ
  • Average rainfall days in December: 8.2 days

The month with the highest number of rainy days is July (13.9 days).
The month with the least rainy days is January (6.1 days).

Average snowfall in December
Harlingen, NJ

Average snowfall in December - Harlingen, NJ
  • Average snowfall in December: 0.75"

The month with the highest snowfall is March (1.42").
The months with the least snowfall are June, July, August, September and October (0").

Average snowfall days in December
Harlingen, NJ

Average snowfall days in December - Harlingen, NJ
  • Average snowfall days in December: 2.7 days

The month with the highest number of snowfall days is January (4.6 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
Harlingen, NJ

Average daylight in December / Average sunshine in December - Harlingen, NJ
  • 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 18min).

  • Average sunshine in December: 5h and 0min

The month with the most sunshine is July (Average sunshine: 10h and 30min).
The month with the least sunshine is February (Average sunshine: 4h and 48min).

Average sunshine days in December
Harlingen, NJ

Average sunshine days in December - Harlingen, NJ
  • Average sunshine days in December: 20.5 days

The month with the most sunshine days is January (21.8 days).
The month with the least sunshine days is July (13.3 days).

Average UV index in December
Harlingen, NJ

Average UV index in December - Harlingen, NJ
  • Average UV index in December: 2

The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).

Average cloud cover in December
Harlingen, NJ

Average cloud cover in December - Harlingen, NJ
  • Average cloud cover in December: 47

The months with the most cloud cover are February, March and December (Cloud cover 47).
The months with the least cloud cover are July and August (Cloud cover 33).

Average visibility in December
Harlingen, NJ

Average visibility in December - Harlingen, NJ
  • Average visibility in December: 6mi

The months with the highest visibility are January, February, March, April, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is May (5mi).

Harlingen, New Jersey, USA

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