December weather forecast
Beaverton, MT

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Weather in December

The first month of the winter, December, is also a subzero cold month in Beaverton, Montana, with an average temperature varying between 24.8°F (-4°C) and 12.7°F (-10.7°C).

Temperature

The arrival of December corresponds with a temperature reduction, down from November's cold 38.8°F (3.8°C) to a subzero cold 24.8°F (-4°C). In December, the nighttime temperature in Beaverton lowers to an average of 12.7°F (-10.7°C).

Humidity

The average relative humidity in December in Beaverton, Montana, is 83%.

Rainfall

In December, the rain falls for 4.2 days. Throughout December, 0.51" (13mm) of precipitation is accumulated. Throughout the year, there are 91.8 rainfall days, and 10.63" (270mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January through May, October through December. December is the month with the most snowfall in Beaverton. Snow falls for 11.8 days and accumulates 3.43" (87mm) of snow.

Daylight

The month with the shortest days is December, with an average of 8h and 24min of daylight.
On the first day of December, sunrise is at 7:40 am and sunset at 4:16 pm. On the last day of the month, sunrise is at 8:00 am and sunset at 4:24 pm MST.

Sunshine

The average sunshine in December in Beaverton, Montana, is 4.8h.

UV index

The months with the lowest UV index in Beaverton are January through March, October through December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a minimal health hazard from exposure to the Sun's UV rays for the average person.
Note: In December, a regular UV index of 2 translates into these guidelines:
Though extended exposure to the sun typically does not concern most people, it is crucial to always shield children, infants, and those with sensitive skin. Midday is the peak time for the Sun's radiation; stay in the shade and protect yourself. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly. Be careful! The Sun's UV radiation can nearly be doubled by the reflective quality of snow.
Updated: Feb 13, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How cold is December in Beaverton?

In Beaverton, in December, the average high-temperature is 24.8°F (-4°C), and the average low-temperature is 12.7°F (-10.7°C). The average heat index (a.k.a. 'felt air temperature', 'real feel'), which represents the influence of relative humidity on air temperature, in August is estimated at 82.4°F (28°C).

What is the average humidity in December in Beaverton?

In December, the average relative humidity is 83%.

How many days does it rain in December in Beaverton?

In Beaverton, during December, the rain falls for 4.2 days and regularly aggregates up to 0.51" (13mm) of precipitation.

When does it snow the most in Beaverton?

The month with the most snowfall is December, when snow falls for 11.8 days and typically aggregates up to 3.43" (87mm) of snow.

How many days does it snow in December in Beaverton?

In December, in Beaverton, it is snowing for 11.8 days. Throughout December, 3.43" (87mm) of snow is accumulated.

What is the month with the shortest days in Beaverton?

The month with the shortest days in Beaverton is December, with an average of 8h and 24min of daylight.

How many hours of daylight does Beaverton have in December?

In December, the average day length in Beaverton is 8h and 23min.

What time are sunrise and sunset in December in Beaverton?

On the first day of December in Beaverton, sunrise is at 7:40 am and sunset at 4:16 pm. On the last day of the month, sunrise is at 8:00 am and sunset at 4:24 pm MST.

How long on average sun shines in December in Beaverton?

In December, the average sunshine duration in Beaverton, Montana, is 4.8h.

What is the month with the lowest UV index in Beaverton?

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

How high is the UV index in December in Beaverton?

In December, the average daily maximum UV index in Beaverton 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
Beaverton, MT

Average temperature in December - Beaverton, MT
  • Average high temperature in December: 24.8°F

The warmest month (with the highest average high temperature) is July (84°F).
The month with the lowest average high temperature is February (24.4°F).

  • Average low temperature in December: 12.7°F

The month with the highest average low temperature is July (63.1°F).
The coldest month (with the lowest average low temperature) is February (10°F).

Average pressure in December
Beaverton, MT

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

The month with the highest atmospheric pressure is February (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.83"Hg).

Average wind speed in December
Beaverton, MT

Average wind speed in December - Beaverton, MT
  • Average wind speed in December: 8.5mph

The windiest month (with the highest average wind speed) is April (11.3mph).
The calmest month (with the lowest average wind speed) is February (8.3mph).

Average humidity in December
Beaverton, MT

Average humidity in December - Beaverton, MT
  • Average humidity in December: 83%

The month with the highest relative humidity is January (85%).
The month with the lowest relative humidity is August (41%).

Average rainfall in December
Beaverton, MT

Average rainfall in December - Beaverton, MT
  • Average rainfall in December: 0.51"

The wettest month (with the highest rainfall) is May (1.73").
The driest month (with the least rainfall) is February (0.43").

Average rainfall days in December
Beaverton, MT

Average rainfall days in December - Beaverton, MT
  • Average rainfall days in December: 4.2 days

The month with the highest number of rainy days is May (12.7 days).
The month with the least rainy days is February (3.3 days).

Average snowfall in December
Beaverton, MT

Average snowfall in December - Beaverton, MT
  • Average snowfall in December: 3.43"

The month with the highest snowfall is December (3.43").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in December
Beaverton, MT

Average snowfall days in December - Beaverton, MT
  • Average snowfall days in December: 11.8 days

The month with the highest number of snowfall days is January (12.3 days).
The months with the least snowfall days are June, July and August (0 days).

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

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

The month with the longest days is June (Average daylight: 16h and 0min).
The month with the shortest days is December (Average daylight: 8h and 24min).

  • Average sunshine in December: 4h and 5min

The month with the most sunshine is July (Average sunshine: 11h and 42min).
The month with the least sunshine is February (Average sunshine: 4h and 36min).

Average sunshine days in December
Beaverton, MT

Average sunshine days in December - Beaverton, MT
  • Average sunshine days in December: 17.3 days

The month with the most sunshine days is October (21 days).
The month with the least sunshine days is April (15.4 days).

Average UV index in December
Beaverton, MT

Average UV index in December - Beaverton, MT
  • Average UV index in December: 2

The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January, February, March, October, November and December (UV index 2).

Average cloud cover in December
Beaverton, MT

Average cloud cover in December - Beaverton, MT
  • Average cloud cover in December: 49

The month with the most cloud cover is February (Cloud cover 50).
The months with the least cloud cover are July and August (Cloud cover 18).

Average visibility in December
Beaverton, MT

Average visibility in December - Beaverton, MT
  • Average visibility in December: 6mi

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

Beaverton, Montana, USA

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