December weather forecast
Naismith, MT

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Weather in December

December, the first month of the winter in Naismith, is also a subzero cold month, with an average temperature varying between 15.4°F (-9.2°C) and 27.7°F (-2.4°C).

Temperature

Naismith's December weather, marked by an average high temperature of 27.7°F (-2.4°C) and an average low temperature of 15.4°F (-9.2°C), is the coldest in the year.

Humidity

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

Rainfall

January and December are months with the least rain in Naismith, Montana, when the rain falls for 3.3 days and typically aggregates up to 0.39" (10mm) of rain.

Snowfall

January through May, September through December are months with snowfall in Naismith. In Naismith, Montana, in December, snow falls for 9.5 days, with typically accumulated 2.28" (58mm) of snow. Throughout the year, there are 53.7 snowfall days, and 20.47" (520mm) of snow is accumulated.

Daylight

With an average of 8h and 24min of daylight, December has the shortest days of the year in Naismith.
On the first day of the month, sunrise is at 7:58 am and sunset at 4:34 pm. On the last day of December, in Naismith, sunrise is at 8:18 am and sunset at 4:42 pm MST.

Sunshine

In Naismith, Montana, the average sunshine in December is 5.5h.

UV index

January through March, October through December, with an average maximum UV index of 2, are months with the lowest UV index in Naismith. A UV Index estimate of 2, and below, represents a low health risk from exposure to the Sun's UV radiation for the average person.
Note: In December, a daily maximum UV index of 2 leads to the following instructions:
Prolonged sun exposure should always be prevented in babies, children, and those with sensitive skin. Solar radiation is at its peak intensity during midday, so it's advisable to stay indoors or in the shade. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat. Take to heart! Snow reflection can almost magnify the Sun's UV radiation twofold.
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Frequently asked questions

What part of the year is the coldest in Naismith?

Temperature records in Naismith mark December as the coldest month, with highs averaging 27.7°F (-2.4°C) and lows at 15.4°F (-9.2°C).

How cold is December in Naismith?

In December, in Naismith, the average high-temperature is 27.7°F (-2.4°C), and the average low-temperature is 15.4°F (-9.2°C). The average heat index (a.k.a. 'apparent temperature', 'feels like'), which combines air temperature and relative humidity, in July is calculated to be 80.6°F (27°C).

What is the average humidity in December in Naismith?

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

What is the driest month in Naismith?

The months with the least rainfall in Naismith are January and December Rain falls for 3.3 days and accumulates 0.39" (10mm) of rain.

How much does it rain in Naismith in December?

In December, the rain falls for 3.3 days. Throughout December, 0.39" (10mm) of precipitation is accumulated.

How many days does it snow in December in Naismith?

In Naismith, in December, during 9.5 snowfall days, 2.28" (58mm) of snow is typically accumulated.

What is the month with the shortest days in Naismith?

December has the shortest days of the year in Naismith, Montana, with an average of 8h and 24min of daylight.

How many hours of daylight does Naismith have in December?

In Naismith, the average day length in December is 8h and 24min.

When are sunrise and sunset in December in Naismith?

On the first day of December in Naismith, sunrise is at 7:58 am and sunset at 4:34 pm. On the last day of the month, sunrise is at 8:18 am and sunset at 4:42 pm MST.

How many hours of sunshine does Naismith have in December?

In December, the average sunshine duration in Naismith, Montana, is 5.5h.

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

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

What is the UV index intensity in December in Naismith?

In December, the average daily maximum UV index in Naismith, Montana, is 2. A UV Index estimate of 2, and below, represents a low health risk from exposure to Sun's UV rays.
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
Naismith, MT

Average temperature in December - Naismith, MT
  • Average high temperature in December: 27.7°F

The warmest month (with the highest average high temperature) is July (80.8°F).
The month with the lowest average high temperature is December (27.7°F).

  • Average low temperature in December: 15.4°F

The month with the highest average low temperature is August (58.3°F).
The coldest month (with the lowest average low temperature) is December (15.4°F).

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Average pressure in December
Naismith, MT

Average pressure in December - Naismith, 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 (29.86"Hg).

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Average wind speed in December
Naismith, MT

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

The windiest month (with the highest average wind speed) is April (11mph).
The calmest month (with the lowest average wind speed) is August (8.7mph).

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Average humidity in December
Naismith, MT

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

The month with the highest relative humidity is January (80%).
The month with the lowest relative humidity is August (40%).

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Average rainfall in December
Naismith, MT

Average rainfall in December - Naismith, MT
  • Average rainfall in December: 0.39"

The wettest month (with the highest rainfall) is June (2.01").
The driest months (with the least rainfall) are January and December (0.39").

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Average rainfall days in December
Naismith, MT

Average rainfall days in December - Naismith, MT
  • Average rainfall days in December: 3.3 days

The month with the highest number of rainy days is May (13.9 days).
The month with the least rainy days is February (3.1 days).

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Average snowfall in December
Naismith, MT

Average snowfall in December - Naismith, MT
  • Average snowfall in December: 2.28"

The month with the highest snowfall is February (4.17").
The months with the least snowfall are June, July and August (0").

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Average snowfall days in December
Naismith, MT

Average snowfall days in December - Naismith, MT
  • Average snowfall days in December: 9.5 days

The month with the highest number of snowfall days is February (10.3 days).
The months with the least snowfall days are July and August (0 days).

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

Average daylight in December / Average sunshine in December - Naismith, 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: 5h and 3min

The month with the most sunshine is July (Average sunshine: 11h and 54min).
The month with the least sunshine is January (Average sunshine: 5h and 24min).

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Average sunshine days in December
Naismith, MT

Average sunshine days in December - Naismith, MT
  • Average sunshine days in December: 20.8 days

The month with the most sunshine days is September (22.2 days).
The month with the least sunshine days is April (14.7 days).

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Average UV index in December
Naismith, MT

Average UV index in December - Naismith, 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
Naismith, MT

Average cloud cover in December - Naismith, 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 15).

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Average visibility in December
Naismith, MT

Average visibility in December - Naismith, 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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Naismith, Montana, USA

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