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
In Bynum, December is the coldest month, with temperatures averaging a high of 28.8°F (-1.8°C) and a low of 16.2°F (-8.8°C).Humidity
In Bynum, the average relative humidity in December is 75%.Rainfall
December is the month with the least rainfall. Rain falls for 3.5 days and accumulates 0.35" (9mm) of precipitation.Snowfall
January through May, September through December are months with snowfall. In December, in Bynum, Montana, it is snowing for 8.3 days. Throughout December, 2.4" (61mm) of snow is accumulated. In Bynum, Montana, during the entire year, snow falls for 50.3 days and aggregates up to 21.26" (540mm) of snow.Daylight
December has the shortest days of the year in Bynum, with an average of 8h and 30min of daylight.On the first day of the month, sunrise is at 7:58 am and sunset at 4:38 pm. On the last day of December, in Bynum, Montana, sunrise is at 8:18 am and sunset at 4:46 pm MST.
Sunshine
December has the least sunshine of the year in Bynum, with an average of 5.8h of sunshine.UV index
The months with the lowest UV index are January through March, October through December, with an average maximum UV index of 2. A UV Index value 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:
Children, infants, and individuals with sensitive skin should be constantly protected from extended sun exposure. The Sun's UV radiation is especially harmful around midday, so reduce exposure and stay safe. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses. Be watchful! The reflection of snow can enhance the intensity of the Sun's UV radiation nearly double.
Frequently asked questions
What are the coldest months in Bynum?
How cold is it in Bynum in December?
What is the average humidity in December in Bynum?
What is the driest month in Bynum?
How much does it rain in Bynum in December?
How many days does it snow in December in Bynum?
What is the month with the shortest days in Bynum?
What is the average length of the day in December in Bynum?
When are sunrise and sunset in December in Bynum?
What is the month with the least sunshine in Bynum?
How many hours of sunshine does Bynum have in December?
When is the lowest UV index in Bynum?
How high is the UV index in December in Bynum?
Average temperature in December
Bynum, MT
- Average high temperature in December: 28.8°F
The warmest month (with the highest average high temperature) is July (79.7°F).
The month with the lowest average high temperature is December (28.8°F).
- Average low temperature in December: 16.2°F
The month with the highest average low temperature is August (55.9°F).
The coldest month (with the lowest average low temperature) is December (16.2°F).
Average pressure in December
Bynum, MT
- Average pressure in December: 30.13"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).
Average wind speed in December
Bynum, MT
- Average wind speed in December: 10.7mph
The windiest month (with the highest average wind speed) is January (11.2mph).
The calmest months (with the lowest average wind speed) are July and August (8mph).
Average humidity in December
Bynum, MT
- Average humidity in December: 75%
The month with the highest relative humidity is January (76%).
The month with the lowest relative humidity is August (42%).
Average rainfall in December
Bynum, MT
- Average rainfall in December: 0.35"
The wettest month (with the highest rainfall) is June (1.93").
The driest month (with the least rainfall) is December (0.35").
Average rainfall days in December
Bynum, MT
- Average rainfall days in December: 3.5 days
The month with the highest number of rainy days is May (11.3 days).
The month with the least rainy days is November (2.7 days).
Average snowfall in December
Bynum, MT
- Average snowfall in December: 2.4"
The month with the highest snowfall is February (4.17").
The months with the least snowfall are June, July and August (0").
Average snowfall days in December
Bynum, MT
- Average snowfall days in December: 8.3 days
The month with the highest number of snowfall days is February (11.3 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in December /
Average sunshine in December
Bynum, MT
- Average daylight in December: 8h and 3min
The month with the longest days is June (Average daylight: 16h and 0min).
The month with the shortest days is December (Average daylight: 8h and 30min).
- Average sunshine in December: 5h and 5min
The month with the most sunshine is July (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 5h and 48min).
Average sunshine days in December
Bynum, MT
- Average sunshine days in December: 21.7 days
The month with the most sunshine days is October (23.2 days).
The month with the least sunshine days is February (15.8 days).
Average UV index in December
Bynum, MT
- Average UV index in December: 2
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, March, October, November and December (UV index 2).
Average cloud cover in December
Bynum, MT
- Average cloud cover in December: 38
The month with the most cloud cover is February (Cloud cover 41).
The month with the least cloud cover is July (Cloud cover 14).
Average visibility in December
Bynum, 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).
Bynum, Montana, USA
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