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
Sphinx's coldest weather arrives in December, when temperatures average a high of 22.5°F (-5.3°C) and a low of 7.9°F (-13.4°C).Humidity
In Sphinx, the average relative humidity in December is 89%.Rainfall
In Sphinx, during December, the rain falls for 6.3 days and regularly aggregates up to 1.34" (34mm) of precipitation. Throughout the year, there are 116.1 rainfall days, and 23.5" (597mm) of precipitation is accumulated.Snowfall
Months with snowfall in Sphinx, Montana, are January through December. In Sphinx, in December, during 19.1 snowfall days, 11.1" (282mm) of snow is typically accumulated. In Sphinx, during the entire year, snow falls for 151.6 days and aggregates up to 124.06" (3151mm) of snow.Daylight
With an average of 8h and 48min of daylight, December has the shortest days of the year.On the first day of December in Sphinx, sunrise is at 7:42 am and sunset at 4:42 pm. On the last day of the month, sunrise is at 8:02 am and sunset at 4:51 pm MST.
Sunshine
In Sphinx, the average sunshine in December is 4.8h.UV index
The average daily maximum UV index in December is 2. A UV Index reading of 2, and below, represents a low threat to health from exposure to the Sun's UV rays for ordinary individuals.Note: The maximum UV index of 2 during December leads to these instructions:
Protection from prolonged sun exposure is necessary for babies, children, and individuals with sensitive skin. The solar radiation around mid-day is intense; avoid the Sun and stay safe. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage. Be attentive! The reflective property of snow can nearly double the Sun's UV radiation.
Frequently asked questions
What month is the coldest in Sphinx?
How cold is December in Sphinx?
What is the average humidity in December in Sphinx?
How many days does it rain in December in Sphinx?
How much does it snow in Sphinx in December?
What is the month with the shortest days in Sphinx?
What is the average length of the day in December in Sphinx?
When are sunrise and sunset in December in Sphinx?
How long on average sun shines in December in Sphinx?
What is the UV index reading in December in Sphinx?
Average temperature in December
Sphinx, MT
- Average high temperature in December: 22.5°F
The warmest month (with the highest average high temperature) is July (74.8°F).
The month with the lowest average high temperature is December (22.5°F).
- Average low temperature in December: 7.9°F
The month with the highest average low temperature is August (45.1°F).
The coldest month (with the lowest average low temperature) is December (7.9°F).
Average pressure in December
Sphinx, MT
- Average pressure in December: 30.21"Hg
The month with the highest atmospheric pressure is January (30.22"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in December
Sphinx, MT
- Average wind speed in December: 6.8mph
The windiest month (with the highest average wind speed) is January (7.1mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).
Average humidity in December
Sphinx, MT
- Average humidity in December: 89%
The months with the highest relative humidity are January and February (90%).
The month with the lowest relative humidity is August (51%).
Average rainfall in December
Sphinx, MT
- Average rainfall in December: 1.34"
The wettest months (with the highest rainfall) are April and May (2.91").
The driest month (with the least rainfall) is July (1.18").
Average rainfall days in December
Sphinx, MT
- Average rainfall days in December: 6.3 days
The month with the highest number of rainy days is June (16.6 days).
The month with the least rainy days is February (4.3 days).
Average snowfall in December
Sphinx, MT
- Average snowfall in December: 11.1"
The month with the highest snowfall is April (19.88").
The month with the least snowfall is August (0.08").
Average snowfall days in December
Sphinx, MT
- Average snowfall days in December: 19.1 days
The month with the highest number of snowfall days is March (21 days).
The month with the least snowfall days is August (0.3 days).
Average daylight in December /
Average sunshine in December
Sphinx, 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: 4h and 5min
The month with the most sunshine is July (Average sunshine: 11h and 42min).
The month with the least sunshine is January (Average sunshine: 4h and 42min).
Average sunshine days in December
Sphinx, MT
- Average sunshine days in December: 12.2 days
The month with the most sunshine days is September (14.5 days).
The month with the least sunshine days is May (5.7 days).
Average UV index in December
Sphinx, MT
- Average UV index in December: 2
The month with the highest UV index is July (UV index 5).
The months with the lowest UV index are January and February (UV index 1).
Average cloud cover in December
Sphinx, MT
- Average cloud cover in December: 56
The month with the most cloud cover is February (Cloud cover 60).
The month with the least cloud cover is July (Cloud cover 17).
Average visibility in December
Sphinx, MT
- Average visibility in December: 4mi
The months with the highest visibility are June, July, August, September and October (6mi).
The months with the lowest visibility are January, February, March, April and December (4mi).
Sphinx, Montana, USA
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