December weather forecast
Ethridge, MT

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Weather in December

December, the first month of the winter in Ethridge, is also a subzero cold month, with temperature in the range of an average low of 15.3°F (-9.3°C) and an average high of 27.1°F (-2.7°C).

Temperature

The month of December, characterized by an average high of 27.1°F (-2.7°C) and a low of 15.3°F (-9.3°C), is recognized as the coldest.

Humidity

In Ethridge, the average relative humidity in December is 77%.

Rainfall

In Ethridge, in December, during 3.5 rainfall days, 0.43" (11mm) of precipitation is typically accumulated. Throughout the year, there are 70.4 rainfall days, and 8.46" (215mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January through May, September through December. In Ethridge, in December, during 10.2 snowfall days, 2.72" (69mm) of snow is typically accumulated. In Ethridge, during the entire year, snow falls for 54.3 days and aggregates up to 19.49" (495mm) of snow.

Daylight

December has the shortest days of the year in Ethridge, with an average of 8h and 24min of daylight.
On the first day of December, sunrise is at 8:00 am and sunset at 4:35 pm. On the last day of the month, sunrise is at 8:20 am and sunset at 4:43 pm MST.

Sunshine

The months with the least sunshine are January and December, with an average of 5.6h of sunshine.

UV index

The months with the lowest UV index are January through March, October through December, with an average maximum UV index of 2. A UV Index estimate of 2, and below, represents a low health risk from unprotected exposure to Sun's UV rays for the ordinary person.
Note: In December, the maximum UV index of 2 suggests these recommendations:
While many people can endure lengthy sun exposure, it remains imperative to safeguard babies, children, and fair-skinned individuals. The Sun's UV radiation is especially harmful around midday, so reduce exposure and stay safe. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage. Be alert! Nearly double the UV rays from the Sun can be reflected by snow.
Updated: Jul 21, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What month is the coldest?

Ethridge's December weather reaches an average high of 27.1°F (-2.7°C) and an average low of 15.3°F (-9.3°C), making it the coldest month.

How cold is December?

The high-temperature, in December, in Ethridge, is 27.1°F (-2.7°C), while the low-temperature averages to 15.3°F (-9.3°C).

What is the average humidity in December?

The average relative humidity in December is 77%.

How much does it rain in December?

In Ethridge, in December, during 3.5 rainfall days, 0.43" (11mm) of precipitation is typically accumulated.

How many days does it snow in December in Ethridge?

In Ethridge, in December, during 10.2 snowfall days, 2.72" (69mm) of snow is typically accumulated.

What is the month with the shortest days?

With an average of 8h and 24min of daylight, December has the shortest days of the year in Ethridge.

How many hours of daylight does Ethridge have in December?

In December, the average day length is 8h and 22min.

When is the sunrise / sunset in December?

On the first day of December, sunrise is at 8:00 am and sunset at 4:35 pm. On the last day of the month, sunrise is at 8:20 am and sunset at 4:43 pm MST.

What is the month with the least sunshine?

January and December, with an average of 5.6h of sunshine, are months with the least sunshine.

How long on average sun shines in December?

In December, the average sunshine duration is 5.6h.

What is the month with the lowest UV index?

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

How high is the UV index in December?

In Ethridge, the average daily maximum UV index in December is 2. A UV Index of 2, and less, symbolizes a minimal hazard to health 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
Ethridge, MT

Average temperature in December - Ethridge, MT
  • Average high temperature in December: 27.1°F

The warmest month (with the highest average high temperature) is July (78.8°F).
The month with the lowest average high temperature is December (27.1°F).

  • Average low temperature in December: 15.3°F

The month with the highest average low temperature is August (55.2°F).
The coldest month (with the lowest average low temperature) is December (15.3°F).

Average pressure in December
Ethridge, MT

Average pressure in December - Ethridge, MT
  • Average pressure in December: 30.12"Hg

The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.87"Hg).

Average wind speed in December
Ethridge, MT

Average wind speed in December - Ethridge, MT
  • Average wind speed in December: 11.4mph

The windiest month (with the highest average wind speed) is January (11.8mph).
The calmest months (with the lowest average wind speed) are July and August (8.8mph).

Average humidity in December
Ethridge, MT

Average humidity in December - Ethridge, MT
  • Average humidity in December: 77%

The month with the highest relative humidity is January (79%).
The month with the lowest relative humidity is August (43%).

Average rainfall in December
Ethridge, MT

Average rainfall in December - Ethridge, MT
  • Average rainfall in December: 0.43"

The wettest month (with the highest rainfall) is June (1.77").
The driest month (with the least rainfall) is July (0.31").

Average rainfall days in December
Ethridge, MT

Average rainfall days in December - Ethridge, MT
  • Average rainfall days in December: 3.5 days

The month with the highest number of rainy days is May (10.4 days).
The month with the least rainy days is November (2.6 days).

Average snowfall in December
Ethridge, MT

Average snowfall in December - Ethridge, MT
  • Average snowfall in December: 2.72"

The month with the highest snowfall is February (3.58").
The months with the least snowfall are June, July and August (0").

Average snowfall days in December
Ethridge, MT

Average snowfall days in December - Ethridge, MT
  • Average snowfall days in December: 10.2 days

The month with the highest number of snowfall days is December (10.2 days).
The months with the least snowfall days are July and August (0 days).

Average daylight in December /
Average sunshine in December
Ethridge, MT

Average daylight in December / Average sunshine in December - Ethridge, MT
  • Average daylight in December: 8h and 2min

The month with the longest days is June (Average daylight: 16h and 6min).
The month with the shortest days is December (Average daylight: 8h and 24min).

  • Average sunshine in December: 5h and 4min

The month with the most sunshine is July (Average sunshine: 12h and 0min).
The months with the least sunshine are January and December (Average sunshine: 5h and 36min).

Average sunshine days in December
Ethridge, MT

Average sunshine days in December - Ethridge, MT
  • Average sunshine days in December: 19.5 days

The month with the most sunshine days is July (23.5 days).
The month with the least sunshine days is April (17.4 days).

Average UV index in December
Ethridge, MT

Average UV index in December - Ethridge, MT
  • 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, October, November and December (UV index 2).

Average cloud cover in December
Ethridge, MT

Average cloud cover in December - Ethridge, MT
  • Average cloud cover in December: 40

The month with the most cloud cover is February (Cloud cover 43).
The month with the least cloud cover is July (Cloud cover 15).

Average visibility in December
Ethridge, MT

Average visibility in December - Ethridge, MT
  • 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).

Ethridge, Montana, USA

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