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 month of December, characterized by an average high of 25.2°F (-3.8°C) and a low of 10.6°F (-11.9°C), is recognized as the coldest in Dillon.Humidity
In Dillon, the average relative humidity in December is 85%.Rainfall
In Dillon, in December, it is raining for 8.9 days, with typically 0.63" (16mm) of accumulated precipitation. In Dillon, during the entire year, the rain falls for 126.7 days and collects up to 10.35" (263mm) of precipitation.Snowfall
Months with snowfall in Dillon, Montana, are January through June, September through December. In Dillon, during December, snow falls for 14 days and regularly aggregates up to 4.45" (113mm) of snow. Throughout the year, in Dillon, there are 81.2 snowfall days, and 29.76" (756mm) of snow is accumulated.Daylight
With an average of 8h and 48min of daylight, December has the shortest days of the year in Dillon, Montana.On the first day of the month, sunrise is at 7:50 am and sunset at 4:49 pm. On the last day of December, in Dillon, sunrise is at 8:09 am and sunset at 4:58 pm MST.
Sunshine
With an average of 6.1h of sunshine, December has the least sunshine of the year in Dillon.UV index
The average daily maximum UV index in December is 2. A UV Index of 2, and less, symbolizes a low health risk from exposure to the Sun's UV radiation for the average person.Note: The maximum daily UV index of 2 in December interprets into the following recommendations:
While most people are not greatly affected by extended sun exposure, those with fair skin, babies, and children must always have protection. The midday Sun can be dangerous due to its intense radiation; always find shade and reduce exposure. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation. Take into account! The reflection from snow can nearly double the Sun's UV radiation intensity.
Frequently asked questions
What month is the coldest in Dillon?
How cold is it in Dillon in December?
What is the average humidity in December in Dillon?
How much does it rain in Dillon in December?
How much does it snow in Dillon in December?
What is the month with the shortest days in Dillon?
How many hours of daylight does Dillon have in December?
When is the sunrise / sunset in December in Dillon?
What is the month with the least sunshine in Dillon?
How many hours of sunshine does Dillon have in December?
How high is the UV index in December in Dillon?
Average temperature in December
Dillon, MT
- Average high temperature in December: 25.2°F
The warmest month (with the highest average high temperature) is July (77.5°F).
The month with the lowest average high temperature is December (25.2°F).
- Average low temperature in December: 10.6°F
The month with the highest average low temperature is July (47.5°F).
The coldest month (with the lowest average low temperature) is December (10.6°F).
Average pressure in December
Dillon, MT
- Average pressure in December: 30.23"Hg
The month with the highest atmospheric pressure is January (30.24"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in December
Dillon, MT
- Average wind speed in December: 6.5mph
The windiest month (with the highest average wind speed) is November (6.8mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).
Average humidity in December
Dillon, MT
- Average humidity in December: 85%
The month with the highest relative humidity is February (86%).
The months with the lowest relative humidity are July and August (45%).
Average rainfall in December
Dillon, MT
- Average rainfall in December: 0.63"
The wettest month (with the highest rainfall) is June (1.5").
The driest month (with the least rainfall) is January (0.51").
Average rainfall days in December
Dillon, MT
- Average rainfall days in December: 8.9 days
The month with the highest number of rainy days is May (15.3 days).
The month with the least rainy days is February (7.7 days).
Average snowfall in December
Dillon, MT
- Average snowfall in December: 4.45"
The month with the highest snowfall is February (5.51").
The months with the least snowfall are July and August (0").
Average snowfall days in December
Dillon, MT
- Average snowfall days in December: 14 days
The month with the highest number of snowfall days is February (14.1 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in December /
Average sunshine in December
Dillon, 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: 6h and 1min
The month with the most sunshine is July (Average sunshine: 12h and 0min).
The month with the least sunshine is December (Average sunshine: 6h and 6min).
Average sunshine days in December
Dillon, MT
- Average sunshine days in December: 15.5 days
The month with the most sunshine days is July (18.2 days).
The month with the least sunshine days is April (10.1 days).
Average UV index in December
Dillon, MT
- Average UV index in December: 2
The month with the highest UV index is July (UV index 5).
The month with the lowest UV index is February (UV index 1).
Average cloud cover in December
Dillon, MT
- Average cloud cover in December: 40
The month with the most cloud cover is February (Cloud cover 42).
The months with the least cloud cover are July and August (Cloud cover 13).
Average visibility in December
Dillon, MT
- Average visibility in December: 5mi
The months with the highest visibility are March, April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, February and December (5mi).
Dillon, Montana, USA
Weather forecast for your location
2. Allow the app to use your location
