December weather forecast
Conner, MT

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Weather in December

The first month of the winter, December, is also a subzero cold month in Conner, Montana, with an average temperature ranging between max 24.1°F (-4.4°C) and min 9.5°F (-12.5°C).

Temperature

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

Humidity

In Conner, the average relative humidity in December is 90%.

Rainfall

In Conner, in December, during 5.2 rainfall days, 1.38" (35mm) of precipitation is typically accumulated. In Conner, during the entire year, the rain falls for 93.6 days and collects up to 15.43" (392mm) of precipitation.

Snowfall

January through December are months with snowfall. 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

The month with the shortest days is December, with an average of 8h and 42min of daylight.
On the first day of the month, sunrise is at 7:58 am and sunset at 4:53 pm. On the last day of December, sunrise is at 8:18 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

January, February and December, with an average maximum UV index of 1, are months with the lowest UV index. A UV Index value of 2, and less, symbolizes a low health risk from unprotected exposure to Sun's UV rays for the ordinary person.
Note: In December, a regular UV index of 1 translates into these guidelines:
While extended sun exposure does not significantly affect most people, those with sensitive skin, children, and infants should always be protected. The midday Sun can be dangerous due to its intense radiation; always find shade and reduce exposure. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage. Mark this! Snow reflection can nearly double the UV radiation intensity from the Sun.
Updated: Aug 15, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the coldest time of year?

December stands out as Conner's coldest month, with an average high-temperature of 24.1°F (-4.4°C) and a low-temperature of 9.5°F (-12.5°C).

How cold is it in Conner in December?

The high-temperature during December is 24.1°F (-4.4°C) and the low-temperature is 9.5°F (-12.5°C).

What is the average humidity in December?

The average relative humidity in December in Conner is 90%.

How much does it rain in December?

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

How much does it snow in December?

In Conner, during December, snow falls for 16.5 days and regularly aggregates up to 11.34" (288mm) of snow.

What is the month with the shortest days in Conner?

The month with the shortest days is December, with an average of 8h and 42min of daylight.

How many hours of daylight does Conner have in December?

In December, the average day length is 8h and 43min.

When is the sunrise / sunset in December?

In December, on the first day of the month, sunrise is at 7:58 am and sunset at 4:53 pm. On the last day of the month, in Conner, sunrise is at 8:18 am and sunset at 5:01 pm MST.

What is the month with the least sunshine?

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

How many hours of sunshine does Conner have in December?

In December, the average sunshine duration is 5.1h.

When is the lowest UV index?

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

What is the UV index intensity in December?

In Conner, the average daily maximum UV index in December is 1. A UV Index estimate of 2, and below, represents a low health threat 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
Conner, MT

Average temperature in December - Conner, 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
Conner, MT

Average pressure in December - Conner, 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
Conner, MT

Average wind speed in December - Conner, 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
Conner, MT

Average humidity in December - Conner, 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
Conner, MT

Average rainfall in December - Conner, 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
Conner, MT

Average rainfall days in December - Conner, 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
Conner, MT

Average snowfall in December - Conner, 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
Conner, MT

Average snowfall days in December - Conner, 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
Conner, MT

Average daylight in December / Average sunshine in December - Conner, 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
Conner, MT

Average sunshine days in December - Conner, 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
Conner, MT

Average UV index in December - Conner, 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
Conner, MT

Average cloud cover in December - Conner, 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
Conner, MT

Average visibility in December - Conner, 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).

Conner, Montana, USA

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