December weather forecast
De Borgia, MT

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Weather in December

December, the first month of the winter in De Borgia, is still a freezing cold month, with an average temperature varying between 28.9°F (-1.7°C) and 16.2°F (-8.8°C).

Temperature

In De Borgia, Montana, December is the coldest month, with temperatures averaging a high of 28.9°F (-1.7°C) and a low of 16.2°F (-8.8°C).

Humidity

In December, the average relative humidity is 91%.

Rainfall

In De Borgia, Montana, during December, the rain falls for 12.2 days and regularly aggregates up to 2.99" (76mm) of precipitation. Throughout the year, in De Borgia, there are 152.1 rainfall days, and 22.09" (561mm) of precipitation is accumulated.

Snowfall

Months with snowfall in De Borgia, Montana, are January through May, September through December. In De Borgia, in December, snow falls for 20.4 days, with typically accumulated 13.35" (339mm) of snow. In De Borgia, during the entire year, snow falls for 90.2 days and aggregates up to 58.15" (1477mm) of snow.

Daylight

The month with the shortest days is December, with an average of 8h and 30min of daylight.
On the first day of the month, sunrise is at 8:08 am and sunset at 4:52 pm. On the last day of December, sunrise is at 8:28 am and sunset at 5:00 pm MST.

Sunshine

The average sunshine in December in De Borgia is 3.8h.

UV index

January, February, November and December, with an average maximum UV index of 1, are months with the lowest UV index in De Borgia. A UV Index value of 2, and less, symbolizes a low health risk from exposure to the Sun's UV rays for the average person.
Note: The daily maximum UV index of 1 in December interprets into the following advice:
Those with sensitive skin, infants, and children require constant safeguarding from prolonged sun exposure. For health reasons, it's advisable to reduce direct sun exposure during peak hours around midday. Boost your sun resistance with garments that are densely woven yet spacious. Be mindful! The reflection from snow can increase the Sun's UV radiation nearly twice.
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Frequently asked questions

What are the coldest months in De Borgia?

De Borgia's December weather reaches an average high of 28.9°F (-1.7°C) and an average low of 16.2°F (-8.8°C), making it the coldest month.

How cold is December in De Borgia?

The high-temperature, in December, in De Borgia, is 28.9°F (-1.7°C), while the low-temperature averages to 16.2°F (-8.8°C).

What is the average humidity in December in De Borgia?

In December, the average relative humidity is 91%.

How many days does it rain in December in De Borgia?

In De Borgia, Montana, in December, during 12.2 rainfall days, 2.99" (76mm) of precipitation is typically accumulated.

How many days does it snow in December in De Borgia?

In De Borgia, Montana, in December, snow falls for 20.4 days, with typically accumulated 13.35" (339mm) of snow.

What is the month with the shortest days in De Borgia?

December has the shortest days of the year, with an average of 8h and 30min of daylight.

What is the average length of the day in December in De Borgia?

In December, the average day length in De Borgia is 8h and 32min.

When is the sunrise / sunset in December in De Borgia?

In December, on the first day of the month, sunrise is at 8:08 am and sunset at 4:52 pm. On the last day of the month, in De Borgia, sunrise is at 8:28 am and sunset at 5:00 pm MST.

How many hours of sunshine does De Borgia have in December?

The average sunshine duration in December in De Borgia is 3.8h.

What is the month with the lowest UV index in De Borgia?

The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 1.

What is the UV index reading in December in De Borgia?

The average daily maximum UV index in December in De Borgia, Montana, is 1. A UV Index estimate of 2, and below, represents a low health risk 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
De Borgia, MT

Average temperature in December - De Borgia, MT
  • Average high temperature in December: 28.9°F

The warmest months (with the highest average high temperature) are July and August (78.8°F).
The month with the lowest average high temperature is December (28.9°F).

  • Average low temperature in December: 16.2°F

The month with the highest average low temperature is August (45.7°F).
The coldest month (with the lowest average low temperature) is December (16.2°F).

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Average pressure in December
De Borgia, MT

Average pressure in December - De Borgia, MT
  • Average pressure in December: 30.17"Hg

The month with the highest atmospheric pressure is January (30.19"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

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Average wind speed in December
De Borgia, MT

Average wind speed in December - De Borgia, MT
  • Average wind speed in December: 4mph

The windiest month (with the highest average wind speed) is April (4.9mph).
The calmest month (with the lowest average wind speed) is December (4mph).

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Average humidity in December
De Borgia, MT

Average humidity in December - De Borgia, MT
  • Average humidity in December: 91%

The month with the highest relative humidity is January (93%).
The months with the lowest relative humidity are July and August (53%).

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Average rainfall in December
De Borgia, MT

Average rainfall in December - De Borgia, MT
  • Average rainfall in December: 2.99"

The wettest month (with the highest rainfall) is January (3.11").
The driest month (with the least rainfall) is August (0.39").

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Average rainfall days in December
De Borgia, MT

Average rainfall days in December - De Borgia, MT
  • Average rainfall days in December: 12.2 days

The month with the highest number of rainy days is March (19.9 days).
The month with the least rainy days is August (5.9 days).

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Average snowfall in December
De Borgia, MT

Average snowfall in December - De Borgia, MT
  • Average snowfall in December: 13.35"

The month with the highest snowfall is February (15.12").
The months with the least snowfall are June, July and August (0").

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Average snowfall days in December
De Borgia, MT

Average snowfall days in December - De Borgia, MT
  • Average snowfall days in December: 20.4 days

The month with the highest number of snowfall days is December (20.4 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
De Borgia, MT

Average daylight in December / Average sunshine in December - De Borgia, MT
  • Average daylight in December: 8h and 3min

The month with the longest days is June (Average daylight: 15h and 54min).
The month with the shortest days is December (Average daylight: 8h and 30min).

  • Average sunshine in December: 3h and 5min

The month with the most sunshine is July (Average sunshine: 11h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 30min).

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Average sunshine days in December
De Borgia, MT

Average sunshine days in December - De Borgia, MT
  • Average sunshine days in December: 8.1 days

The months with the most sunshine days are July and August (23.3 days).
The month with the least sunshine days is March (5.8 days).

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Average UV index in December
De Borgia, MT

Average UV index in December - De Borgia, MT
  • Average UV index in December: 1

The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 1).

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Average cloud cover in December
De Borgia, MT

Average cloud cover in December - De Borgia, MT
  • Average cloud cover in December: 63

The month with the most cloud cover is February (Cloud cover 66).
The months with the least cloud cover are July and August (Cloud cover 15).

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Average visibility in December
De Borgia, MT

Average visibility in December - De Borgia, MT
  • Average visibility in December: 3mi

The months with the highest visibility are June, July, August and September (6mi).
The months with the lowest visibility are January, February and December (3mi).

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De Borgia, Montana, USA

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