December weather forecast
Hill, MT

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Weather in December

The first month of the winter, December, is still a freezing cold month in Hill, Montana, with an average temperature fluctuating between 16.2°F (-8.8°C) and 27.9°F (-2.3°C).

Temperature

Hill's December weather reaches an average high of 27.9°F (-2.3°C) and an average low of 16.2°F (-8.8°C), making it the coldest month.

Humidity

The average relative humidity in December is 78%.

Rainfall

January and December are months with the least rain when the rain falls for 2.6 days and typically aggregates up to 0.16" (4mm) of rain.

Snowfall

Months with snowfall are January through May, September through December. In Hill, in December, during 6.9 snowfall days, 1.02" (26mm) of snow is typically accumulated. Throughout the year, in Hill, there are 38 snowfall days, and 8.78" (223mm) of snow is accumulated.

Daylight

With an average of 8h and 18min of daylight, December has the shortest days of the year in Hill.
On the first day of December in Hill, sunrise is at 7:57 am and sunset at 4:30 pm. On the last day of the month, sunrise is at 8:17 am and sunset at 4:38 pm MST.

Sunshine

January and December, with an average of 5.4h of sunshine, are months with the least sunshine.

UV index

January through March, October through December, with an average maximum UV index of 2, are months with the lowest UV index in Hill. A UV Index value of 2, and less, symbolizes a minimal health hazard from exposure to the Sun's UV rays for ordinary individuals.
Note: A maximum high UV index of 2 in December translates into the following recommendations:
While most can endure approximately an hour in the sun without burning, children always require protection from sunlight. Midday Sun has the strongest UV rays, making it crucial to limit exposure and find shade. To cut down UV radiation exposure by about half, sport a wide-brim hat. Note this! The Sun's UV radiation can nearly be doubled by the reflection off snow.
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Frequently asked questions

What are the coldest months in Hill?

Hill, Montana, notes the coldest temperatures in December, with a average high of 27.9°F (-2.3°C) and a low of 16.2°F (-8.8°C).

How cold is December in Hill?

The high-temperature in Hill, Montana, during December is 27.9°F (-2.3°C) and the low-temperature is 16.2°F (-8.8°C). The average heat index (a.k.a. 'feels like', 'apparent temperature'), which factors the actual air temperature with the relative humidity, in July is evaluated at 82.4°F (28°C).

What is the average humidity in December in Hill?

In December, the average relative humidity in Hill, Montana, is 78%.

What is the driest month in Hill?

January and December are months with the least rain in Hill, Montana, when the rain falls for 2.6 days and typically aggregates up to 0.16" (4mm) of rain.

How many days does it rain in December in Hill?

In Hill, Montana, during December, the rain falls for 2.6 days and regularly aggregates up to 0.16" (4mm) of precipitation.

How much does it snow in Hill in December?

In December, in Hill, Montana, it is snowing for 6.9 days. Throughout December, 1.02" (26mm) of snow is accumulated.

What is the month with the shortest days in Hill?

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

What is the average length of the day in December in Hill?

In December, the average day length is 8h and 20min.

When is the sunrise / sunset in December in Hill?

On the first day of December in Hill, sunrise is at 7:57 am and sunset at 4:30 pm. On the last day of the month, sunrise is at 8:17 am and sunset at 4:38 pm MST.

What is the month with the least sunshine in Hill?

The months with the least sunshine in Hill are January and December, with an average of 5.4h of sunshine.

How long on average sun shines in December in Hill?

In December, the average sunshine duration is 5.4h.

When is the lowest UV index in Hill?

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

What is the UV index intensity in December in Hill?

The average daily maximum UV index in December in Hill is 2. A UV Index estimate of 2, and below, represents 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
Hill, MT

Average temperature in December - Hill, MT
  • Average high temperature in December: 27.9°F

The warmest month (with the highest average high temperature) is July (81.9°F).
The month with the lowest average high temperature is December (27.9°F).

  • Average low temperature in December: 16.2°F

The month with the highest average low temperature is August (60.3°F).
The coldest months (with the lowest average low temperature) are February and December (16.2°F).

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Average pressure in December
Hill, MT

Average pressure in December - Hill, MT
  • Average pressure in December: 30.11"Hg

The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.85"Hg).

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Average wind speed in December
Hill, MT

Average wind speed in December - Hill, MT
  • Average wind speed in December: 10mph

The windiest month (with the highest average wind speed) is April (10.8mph).
The calmest month (with the lowest average wind speed) is August (8.5mph).

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Average humidity in December
Hill, MT

Average humidity in December - Hill, MT
  • Average humidity in December: 78%

The month with the highest relative humidity is January (81%).
The month with the lowest relative humidity is August (39%).

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Average rainfall in December
Hill, MT

Average rainfall in December - Hill, MT
  • Average rainfall in December: 0.16"

The wettest month (with the highest rainfall) is June (1.54").
The driest months (with the least rainfall) are January and December (0.16").

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Average rainfall days in December
Hill, MT

Average rainfall days in December - Hill, MT
  • Average rainfall days in December: 2.6 days

The month with the highest number of rainy days is May (12.4 days).
The months with the least rainy days are January and February (2.1 days).

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Average snowfall in December
Hill, MT

Average snowfall in December - Hill, MT
  • Average snowfall in December: 1.02"

The month with the highest snowfall is April (1.65").
The months with the least snowfall are June, July and August (0").

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Average snowfall days in December
Hill, MT

Average snowfall days in December - Hill, MT
  • Average snowfall days in December: 6.9 days

The month with the highest number of snowfall days is December (6.9 days).
The months with the least snowfall days are June, July and August (0 days).

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

Average daylight in December / Average sunshine in December - Hill, 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 2min

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 24min).

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Average sunshine days in December
Hill, MT

Average sunshine days in December - Hill, MT
  • Average sunshine days in December: 23.9 days

The months with the most sunshine days are January and December (23.9 days).
The months with the least sunshine days are May and June (16.3 days).

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Average UV index in December
Hill, MT

Average UV index in December - Hill, 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).

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Average cloud cover in December
Hill, MT

Average cloud cover in December - Hill, MT
  • Average cloud cover in December: 42

The month with the most cloud cover is February (Cloud cover 46).
The month with the least cloud cover is July (Cloud cover 14).

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Average visibility in December
Hill, MT

Average visibility in December - Hill, 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).

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Hill, Montana, USA

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