December weather forecast
Sula, MT

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Weather in December

December, the first month of the winter in Sula, is also a subzero cold month, with an average temperature varying between 9.5°F (-12.5°C) and 24.1°F (-4.4°C).

Temperature

With an average high-temperature of 24.1°F (-4.4°C) and an average low-temperature of 9.5°F (-12.5°C), December is the coldest month.

Humidity

The average relative humidity in December in Sula, Montana, is 90%.

Rainfall

In Sula, in December, during 5.2 rainfall days, 1.38" (35mm) of precipitation is typically accumulated. Throughout the year, in Sula, Montana, there are 93.6 rainfall days, and 15.43" (392mm) of precipitation is accumulated.

Snowfall

January through December are months with snowfall in Sula. In December, it is snowing for 16.5 days. Throughout December, 11.34" (288mm) of snow is accumulated. Throughout the year, there are 129.3 snowfall days, and 94.92" (2411mm) of snow is accumulated.

Daylight

December has the shortest days of the year in Sula, with an average of 8h and 42min of daylight.
On the first day of the month, sunrise is at 7:57 am and sunset at 4:52 pm. On the last day of December, in Sula, sunrise is at 8:17 am and sunset at 5:01 pm MST.

Sunshine

The months with the least sunshine are January and December, with an average of 5.1h of sunshine.

UV index

The months with the lowest UV index in Sula, Montana, are January, February and December, with an average maximum UV index of 1. A UV Index estimate of 2, and below, represents a low threat to health from exposure to the Sun's UV rays for the average person.
Note: The maximum UV index, 1 during December, leads to the following recommendations:
Most individuals can handle sun exposure for up to an hour without burning, but children must always be shielded from sun exposure. UV radiation is strongest from the Sun during midday; protect yourself by staying in shaded areas. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat. Mind this! Nearly twice the UV radiation from the Sun can be reflected by the snow.
Updated: Feb 13, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What month is the coldest in Sula?

In Sula, December is known for its average lowest temperatures, reaching a high of 24.1°F (-4.4°C) and a low of 9.5°F (-12.5°C).

How cold is December in Sula?

In Sula, in December, the average high-temperature is 24.1°F (-4.4°C), and the average low-temperature is 9.5°F (-12.5°C).

What is the average humidity in December in Sula?

The average relative humidity in December is 90%.

How many days does it rain in December in Sula?

In Sula, Montana, in December, it is raining for 5.2 days, with typically 1.38" (35mm) of accumulated precipitation.

How many days does it snow in December in Sula?

In Sula, Montana, in December, during 16.5 snowfall days, 11.34" (288mm) of snow is typically accumulated.

What is the month with the shortest days in Sula?

With an average of 8h and 42min of daylight, December has the shortest days of the year in Sula.

How many hours of daylight does Sula have in December?

In December, the average day length is 8h and 44min.

What time are sunrise and sunset in December in Sula?

In December, on the first day of the month, sunrise is at 7:57 am and sunset at 4:52 pm. On the last day of the month, in Sula, Montana, sunrise is at 8:17 am and sunset at 5:01 pm MST.

What is the month with the least sunshine in Sula?

January and December, with an average of 5.1h of sunshine, are months with the least sunshine in Sula.

How long on average sun shines in December in Sula?

In December, the average sunshine duration in Sula is 5.1h.

When is the lowest UV index in Sula?

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

What is the UV index intensity in December in Sula?

In December, the average daily maximum UV index is 1. A UV Index of 2, and less, symbolizes a minimal health vulnerability 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
Sula, MT

Average temperature in December - Sula, MT
  • Average high temperature in December: 24.1°F

The warmest month (with the highest average high temperature) is July (77.2°F).
The month with the lowest average high temperature is December (24.1°F).

  • Average low temperature in December: 9.5°F

The month with the highest average low temperature is August (45.3°F).
The coldest month (with the lowest average low temperature) is December (9.5°F).

Average pressure in December
Sula, MT

Average pressure in December - Sula, MT
  • Average pressure in December: 30.22"Hg

The month with the highest atmospheric pressure is January (30.23"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

Average wind speed in December
Sula, MT

Average wind speed in December - Sula, MT
  • Average wind speed in December: 5mph

The windiest month (with the highest average wind speed) is November (5.2mph).
The calmest month (with the lowest average wind speed) is August (4.2mph).

Average humidity in December
Sula, MT

Average humidity in December - Sula, MT
  • Average humidity in December: 90%

The months with the highest relative humidity are January and February (91%).
The month with the lowest relative humidity is August (48%).

Average rainfall in December
Sula, MT

Average rainfall in December - Sula, MT
  • Average rainfall in December: 1.38"

The wettest month (with the highest rainfall) is April (1.81").
The driest month (with the least rainfall) is August (0.39").

Average rainfall days in December
Sula, MT

Average rainfall days in December - Sula, MT
  • Average rainfall days in December: 5.2 days

The month with the highest number of rainy days is June (11.7 days).
The months with the least rainy days are January, August and December (5.2 days).

Average snowfall in December
Sula, MT

Average snowfall in December - Sula, MT
  • Average snowfall in December: 11.34"

The month with the highest snowfall is February (14.8").
The month with the least snowfall is July (0.12").

Average snowfall days in December
Sula, MT

Average snowfall days in December - Sula, MT
  • Average snowfall days in December: 16.5 days

The month with the highest number of snowfall days is March (20.3 days).
The month with the least snowfall days is July (0.2 days).

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

Average daylight in December / Average sunshine in December - Sula, MT
  • Average daylight in December: 8h and 4min

The month with the longest days is June (Average daylight: 15h and 42min).
The month with the shortest days is December (Average daylight: 8h and 42min).

  • Average sunshine in December: 5h and 1min

The month with the most sunshine is July (Average sunshine: 11h and 54min).
The months with the least sunshine are January and December (Average sunshine: 5h and 6min).

Average sunshine days in December
Sula, MT

Average sunshine days in December - Sula, MT
  • Average sunshine days in December: 14.4 days

The month with the most sunshine days is August (22.3 days).
The month with the least sunshine days is March (8.8 days).

Average UV index in December
Sula, MT

Average UV index in December - Sula, MT
  • Average UV index in December: 1

The month with the highest UV index is July (UV index 5).
The months with the lowest UV index are January, February and December (UV index 1).

Average cloud cover in December
Sula, MT

Average cloud cover in December - Sula, MT
  • Average cloud cover in December: 50

The month with the most cloud cover is February (Cloud cover 54).
The month with the least cloud cover is August (Cloud cover 12).

Average visibility in December
Sula, MT

Average visibility in December - Sula, MT
  • Average visibility in December: 4mi

The months with the highest visibility are May, June, July, August, September and October (6mi).
The months with the lowest visibility are January, February, March and December (4mi).

Sula, Montana, USA

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