Contents
- Weather in December
- Frequently asked questions
- Average temperature in December
- Average pressure in December
- Average wind speed in December
- Average humidity in December
- Average rainfall in December
- Average rainfall days in December
- Average snowfall in December
- Average snowfall days in December
- Average daylight in December
- Average sunshine in December
- Average sunshine days in December
- Average UV index in December
- Average cloud cover in December
- Average visibility in December
Weather in December
Temperature
December's onset brings a slight change in high-temperatures, falling from an icy 42.3°F (5.7°C) in November to a freezing cold 28.9°F (-1.7°C). In Sixmile Crossing, the expected average low-temperature for December is a still subzero cold 16.3°F (-8.7°C).Humidity
In December, the average relative humidity is 78%.Rainfall
November and December are months with the least rain in Sixmile Crossing, Montana, when the rain falls for 2.6 days and typically aggregates up to 0.28" (7mm) of rain.Snowfall
Months with snowfall are January through May, October through December. In Sixmile Crossing, in December, snow falls for 9.2 days, with typically accumulated 1.5" (38mm) of snow. In Sixmile Crossing, during the entire year, snow falls for 43.4 days and aggregates up to 9.13" (232mm) of snow.Daylight
December has the shortest days of the year in Sixmile Crossing, with an average of 8h and 48min of daylight.On the first day of December, sunrise is at 7:21 am and sunset at 4:18 pm. On the last day of the month, sunrise is at 7:41 am and sunset at 4:26 pm MST.
Sunshine
January, February and December, with an average of 5.1h of sunshine, are months with the least sunshine.UV index
The months with the lowest UV index in Sixmile Crossing, Montana, are January through March, November and December, with an average maximum UV index of 2. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from unsafe exposure to UV radiation for the average person.Note: The maximum UV index of 2 during December translates into these guidelines:
Those with sensitive skin, infants, and children require constant safeguarding from prolonged sun exposure. UV radiation is strongest from the Sun during midday; protect yourself by staying in shaded areas. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense. Notice this! Nearly double the intensity of the Sun's UV radiation can be caused by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is it in Sixmile Crossing in December?
What is the average humidity in December in Sixmile Crossing?
What is the driest month in Sixmile Crossing?
How many days does it rain in December in Sixmile Crossing?
How much does it snow in Sixmile Crossing in December?
What is the month with the shortest days in Sixmile Crossing?
How many hours of daylight does Sixmile Crossing have in December?
When are sunrise and sunset in December in Sixmile Crossing?
What is the month with the least sunshine in Sixmile Crossing?
How many hours of sunshine does Sixmile Crossing have in December?
What are the months with the lowest UV index in Sixmile Crossing?
What is the UV index reading in December in Sixmile Crossing?
Average temperature in December
Sixmile Crossing, MT
- Average high temperature in December: 28.9°F
The warmest month (with the highest average high temperature) is July (86.7°F).
The month with the lowest average high temperature is January (28.8°F).
- Average low temperature in December: 16.3°F
The month with the highest average low temperature is July (65.8°F).
The coldest month (with the lowest average low temperature) is January (15.1°F).
Average pressure in December
Sixmile Crossing, MT
- Average pressure in December: 30.13"Hg
The months with the highest atmospheric pressure are January and February (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.83"Hg).
Average wind speed in December
Sixmile Crossing, MT
- Average wind speed in December: 9.7mph
The windiest month (with the highest average wind speed) is April (11.2mph).
The calmest months (with the lowest average wind speed) are February and August (9.3mph).
Average humidity in December
Sixmile Crossing, MT
- Average humidity in December: 78%
The month with the highest relative humidity is January (83%).
The month with the lowest relative humidity is August (39%).
Average rainfall in December
Sixmile Crossing, MT
- Average rainfall in December: 0.28"
The wettest month (with the highest rainfall) is May (1.1").
The driest months (with the least rainfall) are November and December (0.28").
Average rainfall days in December
Sixmile Crossing, MT
- Average rainfall days in December: 2.6 days
The month with the highest number of rainy days is May (11.3 days).
The month with the least rainy days is December (2.6 days).
Average snowfall in December
Sixmile Crossing, MT
- Average snowfall in December: 1.5"
The month with the highest snowfall is February (2.2").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Sixmile Crossing, MT
- Average snowfall days in December: 9.2 days
The month with the highest number of snowfall days is January (10.1 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in December /
Average sunshine in December
Sixmile Crossing, MT
- Average daylight in December: 8h and 5min
The month with the longest days is June (Average daylight: 15h and 36min).
The month with the shortest days is December (Average daylight: 8h and 48min).
- Average sunshine in December: 5h and 1min
The month with the most sunshine is July (Average sunshine: 11h and 48min).
The months with the least sunshine are January, February and December (Average sunshine: 5h and 6min).
Average sunshine days in December
Sixmile Crossing, MT
- Average sunshine days in December: 19.9 days
The month with the most sunshine days is November (22.5 days).
The month with the least sunshine days is April (16.5 days).
Average UV index in December
Sixmile Crossing, MT
- Average UV index in December: 2
The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover in December
Sixmile Crossing, MT
- Average cloud cover in December: 46
The months with the most cloud cover are February and December (Cloud cover 46).
The month with the least cloud cover is July (Cloud cover 15).
Average visibility in December
Sixmile Crossing, 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).
Sixmile Crossing, Montana, USA
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