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
The transition into December indicates a reduction in the average high-temperature, down to a subzero cold 28.9°F (-1.7°C) from November's cold 42.3°F (5.7°C). An average nighttime temperature of 16.3°F (-8.7°C) is recorded during December.Humidity
In Miles City, Montana, the average relative humidity in December is 78%.Rainfall
November and December are months with the least rain in Miles City 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 Miles City, in December, during 9.2 snowfall days, 1.5" (38mm) of snow is typically accumulated. In Miles City, during the entire year, snow falls for 43.4 days and aggregates up to 9.13" (232mm) of snow.Daylight
The month with the shortest days is December, with an average of 8h and 42min of daylight.On the first day of December, sunrise is at 7:27 am and sunset at 4:18 pm. On the last day of the month, sunrise is at 7:46 am and sunset at 4:26 pm MST.
Sunshine
The months with the least sunshine are January, February and December, with an average of 5.1h of sunshine.UV index
January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV rays for the average person.Note: The UV index of 2 during December leads to these advisories:
Babies, children, and individuals with sensitive skin should always have protection against extended sun exposure. Being in direct Sun during midday can be harmful due to intense solar radiation; take precautions. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Take to heart! Snow reflection can almost magnify the Sun's UV radiation twofold.
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Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is December?
What is the average humidity in December?
What is the driest month?
How much does it rain in December?
How many days does it snow in December?
What is the month with the shortest days?
How many hours of daylight does Miles City have in December?
When are sunrise and sunset in December?
What are the months with the least sunshine?
How long on average sun shines in December?
When is the lowest UV index?
What is the UV index intensity in December?
Average temperature in December
Miles City, 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
Miles City, 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
Miles City, 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
Miles City, 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
Miles City, 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
Miles City, 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
Miles City, 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
Miles City, 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
Miles City, 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 48min).
The months with the least sunshine are January, February and December (Average sunshine: 5h and 6min).
Average sunshine days in December
Miles City, 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
Miles City, 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
Miles City, 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
Miles City, 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).
Miles City, Montana, USA
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