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
With the beginning of December, the average high-temperature shows a decrease, transitioning from a frosty 43°F (6.1°C) in November to a freezing cold 30.2°F (-1°C). Throughout December, the temperature tends to fall to a consistent average low of 17.6°F (-8°C).Humidity
In Rosebud, Montana, the average relative humidity in December is 76%.Rainfall
In Rosebud, in December, during 6.5 rainfall days, 0.67" (17mm) of precipitation is typically accumulated. Throughout the year, there are 121.7 rainfall days, and 13.23" (336mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, October through December. In Rosebud, Montana, in December, during 11.6 snowfall days, 3.94" (100mm) of snow is typically accumulated. In Rosebud, during the entire year, snow falls for 56.6 days and aggregates up to 21.06" (535mm) of snow.Daylight
December has the shortest days of the year in Rosebud, with an average of 8h and 42min of daylight.On the first day of December, sunrise is at 7:28 am and sunset at 4:21 pm. On the last day of the month, sunrise is at 7:48 am and sunset at 4:29 pm MST.
Sunshine
In December, the average sunshine is 5.4h.UV index
The month with the lowest UV index is December, with an average maximum UV index of 1. A UV Index value of 2, and less, symbolizes a low threat to health from exposure to the Sun's UV radiation for the average person.Note: The maximum UV index of 1 during December leads to these instructions:
Most individuals face no major issues with lengthy exposure to the sun, but children, infants, and individuals with fair skin always require protection. Midday Sun has the strongest UV rays, making it crucial to limit exposure and find shade. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is December?
What is the average humidity in December?
How much does it rain in Rosebud in December?
How much does it snow in December?
What is the month with the shortest days?
How many hours of daylight does Rosebud have in December?
When is the sunrise / sunset in December?
How many hours of sunshine does Rosebud have in December?
When is the lowest UV index?
What is the UV index intensity in December?
Average temperature in December
Rosebud, MT
- Average high temperature in December: 30.2°F
The warmest month (with the highest average high temperature) is July (86.5°F).
The month with the lowest average high temperature is January (29.7°F).
- Average low temperature in December: 17.6°F
The month with the highest average low temperature is July (64.9°F).
The coldest month (with the lowest average low temperature) is January (16.3°F).
Average pressure in December
Rosebud, MT
- Average pressure in December: 30.12"Hg
The months with the highest atmospheric pressure are January and February (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.84"Hg).
Average wind speed in December
Rosebud, MT
- Average wind speed in December: 9.8mph
The windiest month (with the highest average wind speed) is April (10.9mph).
The calmest month (with the lowest average wind speed) is August (8.9mph).
Average humidity in December
Rosebud, MT
- Average humidity in December: 76%
The month with the highest relative humidity is January (81%).
The month with the lowest relative humidity is August (38%).
Average rainfall in December
Rosebud, MT
- Average rainfall in December: 0.67"
The wettest month (with the highest rainfall) is May (2.05").
The driest month (with the least rainfall) is November (0.63").
Average rainfall days in December
Rosebud, MT
- Average rainfall days in December: 6.5 days
The month with the highest number of rainy days is May (15.1 days).
The months with the least rainy days are January, February and December (6.5 days).
Average snowfall in December
Rosebud, MT
- Average snowfall in December: 3.94"
The month with the highest snowfall is February (4.53").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Rosebud, MT
- Average snowfall days in December: 11.6 days
The month with the highest number of snowfall days is January (12.5 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Rosebud, 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 2min
The month with the most sunshine is July (Average sunshine: 11h and 48min).
The month with the least sunshine is February (Average sunshine: 5h and 12min).
Average sunshine days in December
Rosebud, MT
- Average sunshine days in December: 15.7 days
The month with the most sunshine days is September (17.9 days).
The month with the least sunshine days is April (11.9 days).
Average UV index in December
Rosebud, MT
- Average UV index in December: 1
The month with the highest UV index is July (UV index 7).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in December
Rosebud, MT
- Average cloud cover in December: 44
The month with the most cloud cover is February (Cloud cover 46).
The months with the least cloud cover are July and August (Cloud cover 15).
Average visibility in December
Rosebud, 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).
Rosebud, Montana, USA
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