December weather forecast
Middletown, NJ

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Weather in December

In December, Middletown settles firmly into the winter season. The chilly winds and reduced daylight hours of roughly 9.3 hours set the tone for this month. Cold temperatures pervade the air, yet there is a certain appeal in the frosty charm of the city. Another striking feature is the resumption of both rainfall, about 1.14" (29mm), and snowfall of 0.47" (12mm) in similar amounts as in January. As residents wrap themselves in winter wear, they also gear up to welcome a new year with the promise of familiar and cyclical weather changes.

Temperature

Middletown's progression into December involves a minor drop in the average high-temperature, slightly receding from a cool 52.2°F (11.2°C) in November to a chilly 43.9°F (6.6°C). Middletown, during the nights of December, averages a temperature close to its daytime high, at an icy 35.4°F (1.9°C).

Humidity

In Middletown, the average relative humidity in December is 76%.

Rainfall

In Middletown, during December, the rain falls for 9.3 days and regularly aggregates up to 1.14" (29mm) of precipitation. In Middletown, during the entire year, the rain falls for 127 days and collects up to 12.99" (330mm) of precipitation.

Snowfall

January through March, October through December are months with snowfall. The months with the most snowfall are January and December, with an average 0.47" (12mm) of accumulated snow.

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 7:00 am and sunset at 4:30 pm. On the last day of the month, sunrise is at 7:19 am and sunset at 4:40 pm EST.

Sunshine

In Middletown, New Jersey, the average sunshine in December is 5.1h.

UV index

January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV rays for the ordinary person.
Note: A maximum high daily UV index of 2 during December translates into the following directions:
Many can withstand an hour in the sun without burning, yet children must always have protection against sunlight. Midday is when the Sun's radiation is strongest; avoid prolonged exposure during this time. During bright days, sunglasses that offer UVA and UVB defense are recommended. Take into account! The reflection from snow can nearly double the Sun's UV radiation intensity.
Updated: Aug 22, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How cold is it in December?

The high-temperature, in December, in Middletown, records 43.9°F (6.6°C), while the low-temperature is 35.4°F (1.9°C). In July, the average heat index (a.k.a. 'felt air temperature', 'feels like'), which represents the influence of relative humidity on air temperature, is appraised at 86°F (30°C).

What is the average humidity in December?

The average relative humidity in December is 76%.

How much does it rain in December?

In Middletown, in December, it is raining for 9.3 days, with typically 1.14" (29mm) of accumulated precipitation.

What is the snowiest month?

The months with the most snowfall are January and December, with an average 0.47" (12mm) of accumulated snow.

How many days does it snow in December?

In December, it is snowing for 3.4 days. Throughout December, 0.47" (12mm) 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.

How many hours of daylight does Middletown have in December?

In Middletown, the average day length in December is 9h and 21min.

When is the sunrise / sunset in December?

In December, on the first day of the month, sunrise is at 7:00 am and sunset at 4:30 pm. On the last day of the month, sunrise is at 7:19 am and sunset at 4:40 pm EST.

How long on average sun shines in December?

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

What are the months with the lowest UV index?

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

How high is the UV index in December?

The average daily maximum UV index in December is 2. A UV Index value of 2, and less, symbolizes 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
Middletown, NJ

Average temperature in December - Middletown, NJ
  • Average high temperature in December: 43.9°F

The warmest month (with the highest average high temperature) is July (81.1°F).
The month with the lowest average high temperature is January (37.8°F).

  • Average low temperature in December: 35.4°F

The month with the highest average low temperature is July (70.5°F).
The coldest month (with the lowest average low temperature) is January (27.9°F).

Average pressure in December
Middletown, NJ

Average pressure in December - Middletown, 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
Middletown, NJ

Average wind speed in December - Middletown, NJ
  • Average wind speed in December: 11mph

The windiest month (with the highest average wind speed) is January (11.7mph).
The calmest month (with the lowest average wind speed) is July (7.5mph).

Average humidity in December
Middletown, NJ

Average humidity in December - Middletown, NJ
  • Average humidity in December: 76%

The month with the highest relative humidity is May (79%).
The month with the lowest relative humidity is November (73%).

Average rainfall in December
Middletown, NJ

Average rainfall in December - Middletown, NJ
  • Average rainfall in December: 1.14"

The wettest month (with the highest rainfall) is July (1.69").
The driest month (with the least rainfall) is January (0.63").

Average rainfall days in December
Middletown, NJ

Average rainfall days in December - Middletown, NJ
  • Average rainfall days in December: 9.3 days

The month with the highest number of rainy days is July (15.3 days).
The month with the least rainy days is January (6.6 days).

Average snowfall in December
Middletown, NJ

Average snowfall in December - Middletown, NJ
  • Average snowfall in December: 0.47"

The months with the highest snowfall are January and December (0.47").
The months with the least snowfall are April, May, June, July, August and September (0").

Average snowfall days in December
Middletown, NJ

Average snowfall days in December - Middletown, NJ
  • Average snowfall days in December: 3.4 days

The month with the highest number of snowfall days is January (4.7 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

Average daylight in December /
Average sunshine in December
Middletown, NJ

Average daylight in December / Average sunshine in December - Middletown, 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 1min

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

Average sunshine days in December
Middletown, NJ

Average sunshine days in December - Middletown, NJ
  • Average sunshine days in December: 18 days

The month with the most sunshine days is November (21.2 days).
The month with the least sunshine days is July (13.2 days).

Average UV index in December
Middletown, NJ

Average UV index in December - Middletown, 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
Middletown, NJ

Average cloud cover in December - Middletown, NJ
  • Average cloud cover in December: 46

The month with the most cloud cover is February (Cloud cover 47).
The month with the least cloud cover is August (Cloud cover 28).

Average visibility in December
Middletown, NJ

Average visibility in December - Middletown, NJ
  • 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).

Middletown, New Jersey, USA

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