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 coldest month is December, with an average high-temperature of 30.2°F (-1°C) and an average low-temperature of 18.3°F (-7.6°C).Humidity
In December, the average relative humidity is 76%.Rainfall
The month with the least rainfall is December, when the rain falls for 4.5 days and typically collects 0.28" (7mm) of precipitation.Snowfall
January through May, September through December are months with snowfall in Big Sandy. In December, it is snowing for 8.5 days. Throughout December, 1.69" (43mm) of snow is accumulated. Throughout the year, in Big Sandy, there are 44.2 snowfall days, and 11.18" (284mm) of snow is accumulated.Daylight
December has the shortest days of the year in Big Sandy, with an average of 8h and 24min of daylight.On the first day of the month, sunrise is at 7:50 am and sunset at 4:28 pm. On the last day of December, sunrise is at 8:10 am and sunset at 4:36 pm MST.
Sunshine
In Big Sandy, Montana, the average sunshine in December is 5.4h.UV index
The months with the lowest UV index are January, February, 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 unprotected exposure to Sun's UV rays for the average person.Note: A maximum high daily UV index of 2 during December translates into the following directions:
Unlike children, who always need sun protection, most individuals can remain in the sun for up to an hour without getting burnt. Limiting exposure to the direct Sun during midday hours can help prevent harmful UV radiation effects. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes. Be informed! The Sun's UV radiation can be nearly doubled due to the reflection from snow.
Frequently asked questions
What part of the year is the coldest in Big Sandy?
How cold is December in Big Sandy?
What is the average humidity in December in Big Sandy?
What is the driest month in Big Sandy?
How many days does it rain in December in Big Sandy?
How many days does it snow in December in Big Sandy?
What is the month with the shortest days in Big Sandy?
How many hours of daylight does Big Sandy have in December?
When is the sunrise / sunset in December in Big Sandy?
How many hours of sunshine does Big Sandy have in December?
What are the months with the lowest UV index in Big Sandy?
What is the UV index intensity in December in Big Sandy?
Average temperature in December
Big Sandy, MT
- Average high temperature in December: 30.2°F
The warmest month (with the highest average high temperature) is July (83.8°F).
The month with the lowest average high temperature is December (30.2°F).
- Average low temperature in December: 18.3°F
The month with the highest average low temperature is August (61.3°F).
The coldest month (with the lowest average low temperature) is February (17.8°F).
Average pressure in December
Big Sandy, MT
- Average pressure in December: 30.12"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.85"Hg).
Average wind speed in December
Big Sandy, MT
- Average wind speed in December: 10.1mph
The windiest month (with the highest average wind speed) is April (10.7mph).
The calmest month (with the lowest average wind speed) is August (8.5mph).
Average humidity in December
Big Sandy, MT
- Average humidity in December: 76%
The month with the highest relative humidity is January (79%).
The month with the lowest relative humidity is August (38%).
Average rainfall in December
Big Sandy, MT
- Average rainfall in December: 0.28"
The wettest month (with the highest rainfall) is June (1.22").
The driest month (with the least rainfall) is December (0.28").
Average rainfall days in December
Big Sandy, MT
- Average rainfall days in December: 4.5 days
The month with the highest number of rainy days is May (12.5 days).
The month with the least rainy days is February (4.2 days).
Average snowfall in December
Big Sandy, MT
- Average snowfall in December: 1.69"
The month with the highest snowfall is January (2.4").
The months with the least snowfall are June, July and August (0").
Average snowfall days in December
Big Sandy, MT
- Average snowfall days in December: 8.5 days
The month with the highest number of snowfall days is January (9.2 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in December /
Average sunshine in December
Big Sandy, MT
- Average daylight in December: 8h and 2min
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 24min).
- Average sunshine in December: 5h and 2min
The month with the most sunshine is July (Average sunshine: 12h and 0min).
The month with the least sunshine is February (Average sunshine: 5h and 18min).
Average sunshine days in December
Big Sandy, MT
- Average sunshine days in December: 20.4 days
The month with the most sunshine days is September (21.5 days).
The month with the least sunshine days is June (14.6 days).
Average UV index in December
Big Sandy, MT
- Average UV index in December: 2
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in December
Big Sandy, MT
- Average cloud cover in December: 43
The month with the most cloud cover is February (Cloud cover 46).
The month with the least cloud cover is July (Cloud cover 14).
Average visibility in December
Big Sandy, 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).
Big Sandy, Montana, USA
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