December weather forecast
Newcastle, NE

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Weather in December

The first month of the winter, December, is still a freezing cold month in Newcastle, Nebraska, with temperature in the range of an average low of 18°F (-7.8°C) and an average high of 30°F (-1.1°C).

Temperature

A distinct shift in the average high-temperature is signaled in December, moving down from a chilly 45.9°F (7.7°C) in November to a subzero cold 30°F (-1.1°C). In the month of December, Newcastle witnesses a consistent average low-temperature of 18°F (-7.8°C).

Humidity

In Newcastle, the average relative humidity in December is 82%.

Rainfall

In Newcastle, in December, during 3.5 rainfall days, 1.22" (31mm) of precipitation is typically accumulated. Throughout the year, in Newcastle, there are 116.6 rainfall days, and 21.26" (540mm) of precipitation is accumulated.

Snowfall

January through May, October through December are months with snowfall. In Newcastle, in December, snow falls for 6.6 days, with typically accumulated 2.64" (67mm) of snow. Throughout the year, there are 30.7 snowfall days, and 13.9" (353mm) of snow is accumulated.

Daylight

December has the shortest days of the year, with an average of 9h and 6min of daylight.
On the first day of the month, sunrise is at 7:38 am and sunset at 4:54 pm. On the last day of December, sunrise is at 7:57 am and sunset at 5:04 pm CST.

Sunshine

In Newcastle, the average sunshine in December is 4.7h.

UV index

In December, the average daily maximum UV index is 2. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV radiation for the ordinary person.
Note: In December, a daily UV index of 2 turns into the following recommendations:
While extended sun exposure does not significantly affect most people, those with sensitive skin, children, and infants should always be protected. Direct Sun exposure should be minimized especially during midday when radiation is most intense. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses. Pay attention! The reflection of snow can enhance the Sun's UV radiation almost double.
Updated: Jul 13, 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 Newcastle during December is 30°F (-1.1°C) and the low-temperature is 18°F (-7.8°C). The average heat index (a.k.a. 'feels like', 'real feel'), which takes the relative humidity and factors it into the air temperature reading, in August is appraised at 87.8°F (31°C).

What is the average humidity in December?

In December, the average relative humidity is 82%.

How many days does it rain in December?

In December, the rain falls for 3.5 days. Throughout December, 1.22" (31mm) of precipitation is accumulated.

How many days does it snow in December?

In Newcastle, in December, during 6.6 snowfall days, 2.64" (67mm) of snow is typically accumulated.

What is the month with the shortest days?

December has the shortest days of the year, with an average of 9h and 6min of daylight.

What is the average length of the day in December?

In December, the average day length is 9h and 7min.

When is the sunrise / sunset in December?

On the first day of December, sunrise is at 7:38 am and sunset at 4:54 pm. On the last day of the month, sunrise is at 7:57 am and sunset at 5:04 pm CST.

How many hours of sunshine does Newcastle have in December?

In Newcastle, the average sunshine duration in December is 4.7h.

What is the UV index intensity in December in Newcastle?

In Newcastle, the average daily maximum UV index in December is 2. A UV Index of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's 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
Newcastle, NE

Average temperature in December - Newcastle, NE
  • Average high temperature in December: 30°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 (26.8°F).

  • Average low temperature in December: 18°F

The month with the highest average low temperature is July (64.9°F).
The coldest month (with the lowest average low temperature) is January (12.9°F).

Average pressure in December
Newcastle, NE

Average pressure in December - Newcastle, NE
  • Average pressure in December: 30.13"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.85"Hg).

Average wind speed in December
Newcastle, NE

Average wind speed in December - Newcastle, NE
  • Average wind speed in December: 10.2mph

The windiest month (with the highest average wind speed) is April (11.1mph).
The calmest month (with the lowest average wind speed) is July (7.8mph).

Average humidity in December
Newcastle, NE

Average humidity in December - Newcastle, NE
  • Average humidity in December: 82%

The month with the highest relative humidity is January (84%).
The month with the lowest relative humidity is October (65%).

Average rainfall in December
Newcastle, NE

Average rainfall in December - Newcastle, NE
  • Average rainfall in December: 1.22"

The wettest month (with the highest rainfall) is June (3.35").
The driest months (with the least rainfall) are January and February (0.63").

Average rainfall days in December
Newcastle, NE

Average rainfall days in December - Newcastle, NE
  • Average rainfall days in December: 3.5 days

The month with the highest number of rainy days is June (17.3 days).
The months with the least rainy days are January and February (2.8 days).

Average snowfall in December
Newcastle, NE

Average snowfall in December - Newcastle, NE
  • Average snowfall in December: 2.64"

The months with the highest snowfall are January and February (2.83").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in December
Newcastle, NE

Average snowfall days in December - Newcastle, NE
  • Average snowfall days in December: 6.6 days

The month with the highest number of snowfall days is February (7.1 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in December /
Average sunshine in December
Newcastle, NE

Average daylight in December / Average sunshine in December - Newcastle, NE
  • Average daylight in December: 9h and 1min

The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).

  • Average sunshine in December: 4h and 4min

The month with the most sunshine is July (Average sunshine: 10h and 54min).
The month with the least sunshine is January (Average sunshine: 4h and 30min).

Average sunshine days in December
Newcastle, NE

Average sunshine days in December - Newcastle, NE
  • Average sunshine days in December: 21.6 days

The month with the most sunshine days is January (22.2 days).
The month with the least sunshine days is June (10.3 days).

Average UV index in December
Newcastle, NE

Average UV index in December - Newcastle, NE
  • Average UV index in December: 2

The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is January (UV index 1).

Average cloud cover in December
Newcastle, NE

Average cloud cover in December - Newcastle, NE
  • Average cloud cover in December: 48

The month with the most cloud cover is January (Cloud cover 51).
The month with the least cloud cover is July (Cloud cover 25).

Average visibility in December
Newcastle, NE

Average visibility in December - Newcastle, NE
  • 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).

Newcastle, Nebraska, USA

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