December weather forecast
North Rock Springs, WY

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Weather in December

December, the first month of the winter in North Rock Springs, is still a freezing cold month, with an average temperature ranging between max 25.7°F (-3.5°C) and min 11.5°F (-11.4°C).

Temperature

North Rock Springs witnesses the coldest weather in December, with temperatures averaging a high of 25.7°F (-3.5°C) and a low of 11.5°F (-11.4°C).

Humidity

In North Rock Springs, the average relative humidity in December is 82%.

Rainfall

In North Rock Springs, in December, it is raining for 4.7 days, with typically 0.71" (18mm) of accumulated precipitation. In North Rock Springs, during the entire year, the rain falls for 93.5 days and collects up to 10.31" (262mm) of precipitation.

Snowfall

January through June, September through December are months with snowfall. In North Rock Springs, in December, during 13.5 snowfall days, 4.37" (111mm) of snow is typically accumulated. Throughout the year, there are 75.5 snowfall days, and 30.16" (766mm) of snow is accumulated.

Daylight

The month with the shortest days is December, with an average of 9h and 12min of daylight.
On the first day of December, sunrise is at 7:25 am and sunset at 4:47 pm. On the last day of the month, sunrise is at 7:43 am and sunset at 4:57 pm MST.

Sunshine

The months with the least sunshine are January and December, with an average of 5.9h of sunshine.

UV index

The months with the lowest UV index in North Rock Springs are January through April, October through December, with an average maximum UV index of 2. A UV Index estimate of 2, and below, represents a minimal health vulnerability from unprotected exposure to Sun's UV rays for average individuals.
Note: The maximum daily UV index of 2 in December converts into the following recommendations:
Prolonged exposure to sunlight rarely troubles the majority, but constant protection is vital for babies, children, and fair-skinned people. It's recommended to limit sun exposure when its radiation is at its peak during midday. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses. Be aware! The reflective nature of snow can magnify the Sun's UV radiation almost twofold.
Updated: Aug 27, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What part of the year is the coldest?

The month of December sees the average lowest temperatures, reaching 25.7°F (-3.5°C) at the peak and 11.5°F (-11.4°C) at the low.

How cold is December?

The average high-temperature, in December, in North Rock Springs, is 25.7°F (-3.5°C), while the average low-temperature is 11.5°F (-11.4°C).

What is the average humidity in December?

In North Rock Springs, the average relative humidity in December is 82%.

How many days does it rain in December?

In North Rock Springs, in December, it is raining for 4.7 days, with typically 0.71" (18mm) of accumulated precipitation.

How much does it snow in December?

In North Rock Springs, Wyoming, in December, during 13.5 snowfall days, 4.37" (111mm) 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 12min of daylight.

What is the average length of the day in December?

In December, the average day length is 9h and 13min.

When is the sunrise / sunset in December?

On the first day of December, sunrise is at 7:25 am and sunset at 4:47 pm. On the last day of the month, sunrise is at 7:43 am and sunset at 4:57 pm MST.

What is the month with the least sunshine?

The months with the least sunshine are January and December, with an average of 5.9h of sunshine.

How many hours of sunshine does North Rock Springs have in December?

In North Rock Springs, the average sunshine duration in December is 5.9h.

What is the month with the lowest UV index?

January through April, October through 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 December, the average daily maximum UV index is 2. A UV Index value of 2, and less, symbolizes a low health risk 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
North Rock Springs, WY

Average temperature in December - North Rock Springs, WY
  • Average high temperature in December: 25.7°F

The warmest month (with the highest average high temperature) is July (81.5°F).
The month with the lowest average high temperature is December (25.7°F).

  • Average low temperature in December: 11.5°F

The month with the highest average low temperature is July (60.4°F).
The coldest month (with the lowest average low temperature) is January (10.8°F).

Average pressure in December
North Rock Springs, WY

Average pressure in December - North Rock Springs, WY
  • Average pressure in December: 30.24"Hg

The month with the highest atmospheric pressure is January (30.28"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).

Average wind speed in December
North Rock Springs, WY

Average wind speed in December - North Rock Springs, WY
  • Average wind speed in December: 9.3mph

The windiest month (with the highest average wind speed) is April (12.2mph).
The calmest month (with the lowest average wind speed) is August (8.7mph).

Average humidity in December
North Rock Springs, WY

Average humidity in December - North Rock Springs, WY
  • Average humidity in December: 82%

The month with the highest relative humidity is January (84%).
The months with the lowest relative humidity are July and August (31%).

Average rainfall in December
North Rock Springs, WY

Average rainfall in December - North Rock Springs, WY
  • Average rainfall in December: 0.71"

The wettest month (with the highest rainfall) is May (1.5").
The driest month (with the least rainfall) is July (0.47").

Average rainfall days in December
North Rock Springs, WY

Average rainfall days in December - North Rock Springs, WY
  • Average rainfall days in December: 4.7 days

The month with the highest number of rainy days is May (13.8 days).
The month with the least rainy days is December (4.7 days).

Average snowfall in December
North Rock Springs, WY

Average snowfall in December - North Rock Springs, WY
  • Average snowfall in December: 4.37"

The month with the highest snowfall is March (6.14").
The months with the least snowfall are July and August (0").

Average snowfall days in December
North Rock Springs, WY

Average snowfall days in December - North Rock Springs, WY
  • Average snowfall days in December: 13.5 days

The month with the highest number of snowfall days is December (13.5 days).
The months with the least snowfall days are July and August (0 days).

Average daylight in December /
Average sunshine in December
North Rock Springs, WY

Average daylight in December / Average sunshine in December - North Rock Springs, WY
  • Average daylight in December: 9h and 1min

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 12min).

  • Average sunshine in December: 5h and 5min

The months with the most sunshine are July and August (Average sunshine: 11h and 48min).
The months with the least sunshine are January and December (Average sunshine: 5h and 54min).

Average sunshine days in December
North Rock Springs, WY

Average sunshine days in December - North Rock Springs, WY
  • Average sunshine days in December: 16.4 days

The month with the most sunshine days is September (19.8 days).
The month with the least sunshine days is April (11.5 days).

Average UV index in December
North Rock Springs, WY

Average UV index in December - North Rock Springs, WY
  • Average UV index in December: 2

The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, March, April, October, November and December (UV index 2).

Average cloud cover in December
North Rock Springs, WY

Average cloud cover in December - North Rock Springs, WY
  • Average cloud cover in December: 41

The month with the most cloud cover is February (Cloud cover 43).
The month with the least cloud cover is August (Cloud cover 13).

Average visibility in December
North Rock Springs, WY

Average visibility in December - North Rock Springs, WY
  • Average visibility in December: 5mi

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

North Rock Springs, Wyoming, USA

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