December weather forecastCircle, MT
December
Weather in December
December, the first month of the winter in Circle, is also a subzero cold month, with an average temperature ranging between max 26.2°F (-3.2°C) and min 14.2°F (-9.9°C).Temperature
The onset of December introduces a moderate change in Circle's weather, with average high-temperatures falling from November's wintry 40.5°F (4.7°C) to a subzero cold 26.2°F (-3.2°C). The average low-temperature of 14.2°F (-9.9°C) is witnessed during December.Humidity
The average relative humidity in December in Circle is 82%.Rainfall
In Circle, in December, it is raining for 4.1 days, with typically 0.59" (15mm) of accumulated precipitation. In Circle, during the entire year, the rain falls for 102.6 days and collects up to 13.35" (339mm) of precipitation.Snowfall
January through May, October through December are months with snowfall in Circle. In Circle, in December, snow falls for 11.5 days, with typically accumulated 2.95" (75mm) of snow. Throughout the year, in Circle, there are 58.7 snowfall days, and 17.28" (439mm) of snow is accumulated.Daylight
The month with the shortest days in Circle is December, with an average of 8h and 30min of daylight.On the first day of the month, sunrise is at 7:29 am and sunset at 4:13 pm. On the last day of December, sunrise is at 7:49 am and sunset at 4:21 pm MST.
Sunshine
The months with the least sunshine in Circle, Montana, are February and December, with an average of 4.9h of sunshine.UV index
November and December, with an average maximum UV index of 1, are months with the lowest UV index. A UV Index reading of 2, and below, represents a minimal health vulnerability from unsafe exposure to UV radiation for average individuals.Note: The maximum UV index of 1 during December leads to these instructions:
Babies, children, and those with sensitive skin should always avoid extended periods in the sun. Solar radiation peaks around mid-day, so it's wise to limit exposure to the Sun at this time. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat. Be alert! Nearly double the UV rays from the Sun can be reflected by snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Circle, MT
- Average high temperature in December: 26.2°F
The warmest month (with the highest average high temperature) is July (84.7°F).
The month with the lowest average high temperature is January (25.5°F).
- Average low temperature in December: 14.2°F
The month with the highest average low temperature is July (64°F).
The coldest month (with the lowest average low temperature) is January (12.6°F).
Average pressure in December
Circle, MT
- Average pressure in December: 30.14"Hg
The month with the highest atmospheric pressure is February (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.83"Hg).
Average wind speed in December
Circle, MT
- Average wind speed in December: 10.2mph
The windiest month (with the highest average wind speed) is April (11.2mph).
The calmest month (with the lowest average wind speed) is August (9.3mph).
Average humidity in December
Circle, MT
- Average humidity in December: 82%
The month with the highest relative humidity is January (85%).
The month with the lowest relative humidity is August (43%).
Average rainfall in December
Circle, MT
- Average rainfall in December: 0.59"
The wettest month (with the highest rainfall) is May (2.2").
The driest month (with the least rainfall) is January (0.51").
Average rainfall days in December
Circle, MT
- Average rainfall days in December: 4.1 days
The month with the highest number of rainy days is May (13.7 days).
The month with the least rainy days is February (4 days).
Average snowfall in December
Circle, MT
- Average snowfall in December: 2.95"
The month with the highest snowfall is February (3.62").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Circle, MT
- Average snowfall days in December: 11.5 days
The month with the highest number of snowfall days is January (12.9 days).
The months with the least snowfall days are July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Circle, MT
- Average daylight in December: 8h and 30min
The month with the longest days is June (Average daylight: 15h and 54min).
The month with the shortest days is December (Average daylight: 8h and 30min).
- Average sunshine in December: 4h and 54min
The month with the most sunshine is July (Average sunshine: 11h and 42min).
The months with the least sunshine are February and December (Average sunshine: 4h and 54min).
Average sunshine days in December
Circle, MT
- Average sunshine days in December: 17.5 days
The month with the most sunshine days is September (19.8 days).
The month with the least sunshine days is June (13.1 days).
Average UV index in December
Circle, MT
- Average UV index in December: 1
The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are November and December (UV index 1).
Average cloud cover in December
Circle, MT
- Average cloud cover in December: 48
The month with the most cloud cover is February (Cloud cover 49).
The months with the least cloud cover are July and August (Cloud cover 17).
Average visibility in December
Circle, 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).
