December weather forecast
Hornerstown, NJ

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Weather in December

December, the first month of the winter in Hornerstown, is also a frosty month, with an average temperature varying between 32.2°F (0.1°C) and 43.7°F (6.5°C).

Temperature

Hornerstown in December undergoes a mild reduction in the average high-temperature, shifting from November's cool 52.7°F (11.5°C) to a chilly 43.7°F (6.5°C). Hornerstown witnesses an average low-temperature of 32.2°F (0.1°C) throughout the month of December.

Humidity

The average relative humidity in December in Hornerstown is 78%.

Rainfall

In Hornerstown, in December, it is raining for 10.3 days, with typically 2.91" (74mm) of accumulated precipitation. In Hornerstown, during the entire year, the rain falls for 152.9 days and collects up to 28.78" (731mm) of precipitation.

Snowfall

January through May, November and December are months with snowfall. In December, it is snowing for 3 days. Throughout December, 1.14" (29mm) of snow is accumulated. Throughout the year, there are 17.7 snowfall days, and 8.43" (214mm) 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 7:01 am and sunset at 4:33 pm. On the last day of December, sunrise is at 7:20 am and sunset at 4:42 pm EST.

Sunshine

In Hornerstown, 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 value of 2, and less, symbolizes a minimal health hazard from unprotected exposure to Sun's UV rays for average individuals.
Note: In December, the average maximum UV index of 2 translates into the following recommendations:
While most individuals can withstand prolonged sun exposure, it is imperative that babies, children, and those with sensitive skin always be shielded. Avoid the Sun's strongest UV rays by seeking shade and limiting exposure during midday. Employ a wide-brim hat for potent defense against up to 50% of UV rays. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
Updated: Jul 23, 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 Hornerstown, is 43.7°F (6.5°C), while the low-temperature averages to 32.2°F (0.1°C). In August, the average heat index (a.k.a. 'felt air temperature', 'feels like'), which factors the actual air temperature with the relative humidity, is appraised at 89.6°F (32°C).

What is the average humidity in December in Hornerstown?

The average relative humidity in December is 78%.

How much does it rain in December?

In December, in Hornerstown, New Jersey, the rain falls for 10.3 days. Throughout December, 2.91" (74mm) of precipitation is accumulated.

How much does it snow in December?

In Hornerstown, in December, during 3 snowfall days, 1.14" (29mm) of snow is typically 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 Hornerstown have in December?

In December, the average day length is 9h and 23min.

When is the sunrise / sunset in December?

In December, on the first day of the month, sunrise is at 7:01 am and sunset at 4:33 pm. On the last day of the month, sunrise is at 7:20 am and sunset at 4:42 pm EST.

How many hours of sunshine does Hornerstown have in December?

The average sunshine duration in December is 5.1h.

When is the lowest UV index?

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

What is the UV index intensity in December?

In Hornerstown, the average daily maximum UV index in December is 2. A UV Index value of 2, and less, symbolizes 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
Hornerstown, NJ

Average temperature in December - Hornerstown, NJ
  • Average high temperature in December: 43.7°F

The warmest month (with the highest average high temperature) is July (84.4°F).
The month with the lowest average high temperature is January (37.4°F).

  • Average low temperature in December: 32.2°F

The month with the highest average low temperature is July (67.6°F).
The coldest month (with the lowest average low temperature) is January (25°F).

Average pressure in December
Hornerstown, NJ

Average pressure in December - Hornerstown, 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
Hornerstown, NJ

Average wind speed in December - Hornerstown, NJ
  • Average wind speed in December: 7.9mph

The windiest month (with the highest average wind speed) is March (8.8mph).
The calmest month (with the lowest average wind speed) is August (5.5mph).

Average humidity in December
Hornerstown, NJ

Average humidity in December - Hornerstown, 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
Hornerstown, NJ

Average rainfall in December - Hornerstown, NJ
  • Average rainfall in December: 2.91"

The wettest month (with the highest rainfall) is July (3.39").
The driest month (with the least rainfall) is September (1.65").

Average rainfall days in December
Hornerstown, NJ

Average rainfall days in December - Hornerstown, NJ
  • Average rainfall days in December: 10.3 days

The month with the highest number of rainy days is July (17.8 days).
The month with the least rainy days is January (8.3 days).

Average snowfall in December
Hornerstown, NJ

Average snowfall in December - Hornerstown, NJ
  • Average snowfall in December: 1.14"

The month with the highest snowfall is March (3.11").
The months with the least snowfall are June, July, August, September and October (0").

Average snowfall days in December
Hornerstown, NJ

Average snowfall days in December - Hornerstown, NJ
  • Average snowfall days in December: 3 days

The month with the highest number of snowfall days is January (5.3 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
Hornerstown, NJ

Average daylight in December / Average sunshine in December - Hornerstown, 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 24min).

  • Average sunshine in December: 5h and 1min

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
Hornerstown, NJ

Average sunshine days in December - Hornerstown, NJ
  • Average sunshine days in December: 19.1 days

The month with the most sunshine days is November (19.7 days).
The month with the least sunshine days is July (11 days).

Average UV index in December
Hornerstown, NJ

Average UV index in December - Hornerstown, NJ
  • 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
Hornerstown, NJ

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

The months with the most cloud cover are February, March and December (Cloud cover 47).
The month with the least cloud cover is July (Cloud cover 32).

Average visibility in December
Hornerstown, NJ

Average visibility in December - Hornerstown, 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).

Hornerstown, New Jersey, USA

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