December weather forecast
Hillside Colony, MT

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Weather in December

The first month of the winter, December, is also a subzero cold month in Hillside Colony, Montana, with an average temperature ranging between max 27.1°F (-2.7°C) and min 15.3°F (-9.3°C).

Temperature

Hillside Colony's December weather, marked by an average high temperature of 27.1°F (-2.7°C) and an average low temperature of 15.3°F (-9.3°C), is the coldest in the year.

Humidity

In Hillside Colony, Montana, the average relative humidity in December is 77%.

Rainfall

In Hillside Colony, during December, the rain falls for 3.5 days and regularly aggregates up to 0.43" (11mm) of precipitation. Throughout the year, in Hillside Colony, there are 70.4 rainfall days, and 8.46" (215mm) of precipitation is accumulated.

Snowfall

January through May, September through December are months with snowfall in Hillside Colony. In December, in Hillside Colony, Montana, it is snowing for 10.2 days. Throughout December, 2.72" (69mm) of snow is accumulated. Throughout the year, in Hillside Colony, there are 54.3 snowfall days, and 19.49" (495mm) of snow is accumulated.

Daylight

The month with the shortest days is December, with an average of 8h and 18min of daylight.
On the first day of December in Hillside Colony, sunrise is at 8:01 am and sunset at 4:33 pm. On the last day of the month, sunrise is at 8:22 am and sunset at 4:41 pm MST.

Sunshine

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

UV index

January through March, October through December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index of 2, and less, symbolizes a low threat to health from unprotected exposure to Sun's UV rays for the ordinary person.
Note: The daily high UV index of 2 during December translates into the following recommendations:
Although the majority can endure up to an hour in the sun without burns, children always require sun protection. When the Sun is at its strongest around midday, find shade and limit exposure. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat. Heed this! Snow reflection can almost augment the UV radiation of the sun by double.
Updated: Feb 13, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What part of the year is the coldest in Hillside Colony?

December, on average, is the coldest month in Hillside Colony, Montana, registering a high temperature of 27.1°F (-2.7°C) and a low of 15.3°F (-9.3°C).

How cold is December in Hillside Colony?

During December, Hillside Colony experiences an average high-temperature of 27.1°F (-2.7°C) and a low-temperature of 15.3°F (-9.3°C).

What is the average humidity in December in Hillside Colony?

The average relative humidity in December in Hillside Colony, Montana, is 77%.

How many days does it rain in December in Hillside Colony?

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

How many days does it snow in December in Hillside Colony?

In Hillside Colony, in December, snow falls for 10.2 days, with typically accumulated 2.72" (69mm) of snow.

What is the month with the shortest days in Hillside Colony?

The month with the shortest days is December, with an average of 8h and 18min of daylight.

How many hours of daylight does Hillside Colony have in December?

In Hillside Colony, Montana, the average day length in December is 8h and 19min.

What time are sunrise and sunset in December in Hillside Colony?

On the first day of December in Hillside Colony, Montana, sunrise is at 8:01 am and sunset at 4:33 pm. On the last day of the month, sunrise is at 8:22 am and sunset at 4:41 pm MST.

What is the month with the least sunshine in Hillside Colony?

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

How long on average sun shines in December in Hillside Colony?

In December, the average sunshine duration in Hillside Colony, Montana, is 5.6h.

When is the lowest UV index in Hillside Colony?

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

How high is the UV index in December in Hillside Colony?

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

Average temperature in December - Hillside Colony, 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
Hillside Colony, MT

Average pressure in December - Hillside Colony, 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
Hillside Colony, MT

Average wind speed in December - Hillside Colony, 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
Hillside Colony, MT

Average humidity in December - Hillside Colony, 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
Hillside Colony, MT

Average rainfall in December - Hillside Colony, 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
Hillside Colony, MT

Average rainfall days in December - Hillside Colony, 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
Hillside Colony, MT

Average snowfall in December - Hillside Colony, 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
Hillside Colony, MT

Average snowfall days in December - Hillside Colony, 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
Hillside Colony, MT

Average daylight in December / Average sunshine in December - Hillside Colony, 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 18min).

  • 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
Hillside Colony, MT

Average sunshine days in December - Hillside Colony, 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
Hillside Colony, MT

Average UV index in December - Hillside Colony, 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
Hillside Colony, MT

Average cloud cover in December - Hillside Colony, 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
Hillside Colony, MT

Average visibility in December - Hillside Colony, 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).

Hillside Colony, Montana, USA

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