December weather forecastFishtail, MT
December
Weather in December
The first month of the winter, December, is still a freezing cold month in Fishtail, Montana, with temperature in the range of an average high of 30.7°F (-0.7°C) and an average low of 17.4°F (-8.1°C).Temperature
Fishtail witnesses the coldest weather in December, with temperatures averaging a high of 30.7°F (-0.7°C) and a low of 17.4°F (-8.1°C).Humidity
In December, the average relative humidity is 74%.Rainfall
In Fishtail, during December, the rain falls for 6.2 days and regularly aggregates up to 0.63" (16mm) of precipitation. Throughout the year, there are 108.1 rainfall days, and 12.83" (326mm) of precipitation is accumulated.Snowfall
Months with snowfall in Fishtail are January through June, September through December. In December, it is snowing for 9.6 days. Throughout December, 4.72" (120mm) of snow is accumulated. In Fishtail, Montana, during the entire year, snow falls for 61.5 days and aggregates up to 41.77" (1061mm) of snow.Daylight
December has the shortest days of the year, with an average of 8h and 48min of daylight.On the first day of December in Fishtail, sunrise is at 7:38 am and sunset at 4:36 pm. On the last day of the month, sunrise is at 7:57 am and sunset at 4:44 pm MST.
Sunshine
The average sunshine in December in Fishtail is 6.4h.UV index
January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index of 2, and less, symbolizes a low health risk from exposure to the Sun's UV rays for the average person.Note: The maximum UV index, 2 during December, leads to the following recommendations:
Extended sunlight exposure does not pose significant problems for most people, except for children, infants, and people with fair skin who always need shielding. It's crucial to reduce time in the direct Sun around mid-day due to the intense solar radiation. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades. Take heed! Reflection from the snow can almost amplify the Sun's UV radiation by double.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Fishtail, MT
- Average high temperature in December: 30.7°F
The warmest month (with the highest average high temperature) is July (82.9°F).
The month with the lowest average high temperature is December (30.7°F).
- Average low temperature in December: 17.4°F
The months with the highest average low temperature are July and August (57.2°F).
The coldest month (with the lowest average low temperature) is February (16.7°F).
Average pressure in December
Fishtail, MT
- Average pressure in December: 30.15"Hg
The months with the highest atmospheric pressure are January and December (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).
Average wind speed in December
Fishtail, MT
- Average wind speed in December: 8.5mph
The windiest month (with the highest average wind speed) is January (8.7mph).
The calmest month (with the lowest average wind speed) is August (6mph).
Average humidity in December
Fishtail, MT
- Average humidity in December: 74%
The month with the highest relative humidity is January (76%).
The month with the lowest relative humidity is August (41%).
Average rainfall in December
Fishtail, MT
- Average rainfall in December: 0.63"
The wettest month (with the highest rainfall) is May (2.09").
The driest month (with the least rainfall) is January (0.51").
Average rainfall days in December
Fishtail, MT
- Average rainfall days in December: 6.2 days
The month with the highest number of rainy days is May (16.3 days).
The month with the least rainy days is February (4 days).
Average snowfall in December
Fishtail, MT
- Average snowfall in December: 4.72"
The month with the highest snowfall is February (6.81").
The months with the least snowfall are July and August (0").
Average snowfall days in December
Fishtail, MT
- Average snowfall days in December: 9.6 days
The month with the highest number of snowfall days is February (10.8 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in December /
Average sunshine in December
Fishtail, MT
- Average daylight in December: 8h and 48min
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 24min
The month with the most sunshine is July (Average sunshine: 11h and 54min).
The month with the least sunshine is February (Average sunshine: 6h and 12min).
Average sunshine days in December
Fishtail, MT
- Average sunshine days in December: 19.7 days
The month with the most sunshine days is December (19.7 days).
The month with the least sunshine days is May (10.5 days).
Average UV index in December
Fishtail, 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, November and December (UV index 2).
Average cloud cover in December
Fishtail, MT
- Average cloud cover in December: 33
The month with the most cloud cover is February (Cloud cover 38).
The months with the least cloud cover are July and August (Cloud cover 15).
Average visibility in December
Fishtail, 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).
