December weather forecastPinesdale, MT
December
Weather in December
The first month of the winter, December, is also a subzero cold month in Pinesdale, Montana, with an average temperature ranging between max 26.8°F (-2.9°C) and min 14°F (-10°C).Temperature
Pinesdale witnesses the coldest weather in December, with temperatures averaging a high of 26.8°F (-2.9°C) and a low of 14°F (-10°C).Humidity
The average relative humidity in December is 87%.Rainfall
In December, the rain falls for 12.9 days. Throughout December, 1.97" (50mm) of precipitation is accumulated. In Pinesdale, during the entire year, the rain falls for 163.6 days and collects up to 20.83" (529mm) of precipitation.Snowfall
January through May, September through December are months with snowfall. In Pinesdale, Montana, in December, during 18.6 snowfall days, 10.55" (268mm) of snow is typically accumulated. In Pinesdale, during the entire year, snow falls for 101.1 days and aggregates up to 59.17" (1503mm) of snow.Daylight
December has the shortest days of the year, with an average of 8h and 42min of daylight.On the first day of the month, sunrise is at 8:00 am and sunset at 4:52 pm. On the last day of December, sunrise is at 8:19 am and sunset at 5:00 pm MST.
Sunshine
January and December, with an average of 5.4h of sunshine, are months with the least sunshine.UV index
February and December, with an average maximum UV index of 1, are months with the lowest UV index. A UV Index estimate of 2, and below, represents a minimal health hazard from exposure to the Sun's UV radiation for the ordinary person.Note: A maximum high daily UV index of 1 during December translates into the following directions:
People with sensitive skin, children, and babies should always be protected from prolonged sun exposure. Avoiding direct sunlight during midday hours helps reduce the risk from intense UV radiation. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days. Take precaution! The reflection from snow can almost double the UV radiation of the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Pinesdale, MT
- Average high temperature in December: 26.8°F
The warmest month (with the highest average high temperature) is July (77°F).
The month with the lowest average high temperature is December (26.8°F).
- Average low temperature in December: 14°F
The month with the highest average low temperature is August (46.9°F).
The coldest month (with the lowest average low temperature) is December (14°F).
Average pressure in December
Pinesdale, MT
- Average pressure in December: 30.19"Hg
The month with the highest atmospheric pressure is January (30.21"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in December
Pinesdale, MT
- Average wind speed in December: 5.2mph
The windiest month (with the highest average wind speed) is January (5.3mph).
The calmest month (with the lowest average wind speed) is August (4.1mph).
Average humidity in December
Pinesdale, MT
- Average humidity in December: 87%
The month with the highest relative humidity is January (89%).
The month with the lowest relative humidity is August (50%).
Average rainfall in December
Pinesdale, MT
- Average rainfall in December: 1.97"
The wettest months (with the highest rainfall) are February and April (2.36").
The driest month (with the least rainfall) is August (0.75").
Average rainfall days in December
Pinesdale, MT
- Average rainfall days in December: 12.9 days
The month with the highest number of rainy days is May (19.5 days).
The month with the least rainy days is July (8 days).
Average snowfall in December
Pinesdale, MT
- Average snowfall in December: 10.55"
The month with the highest snowfall is February (13.03").
The months with the least snowfall are June, July and August (0").
Average snowfall days in December
Pinesdale, MT
- Average snowfall days in December: 18.6 days
The month with the highest number of snowfall days is February (19.3 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in December /
Average sunshine in December
Pinesdale, MT
- Average daylight in December: 8h and 42min
The month with the longest days is June (Average daylight: 15h and 42min).
The month with the shortest days is December (Average daylight: 8h and 42min).
- Average sunshine in December: 5h and 24min
The months with the most sunshine are July and August (Average sunshine: 11h and 42min).
The months with the least sunshine are January and December (Average sunshine: 5h and 24min).
Average sunshine days in December
Pinesdale, MT
- Average sunshine days in December: 10 days
The month with the most sunshine days is July (18.9 days).
The month with the least sunshine days is February (5.6 days).
Average UV index in December
Pinesdale, MT
- Average UV index in December: 1
The month with the highest UV index is July (UV index 5).
The months with the lowest UV index are February and December (UV index 1).
Average cloud cover in December
Pinesdale, MT
- Average cloud cover in December: 48
The month with the most cloud cover is February (Cloud cover 51).
The month with the least cloud cover is August (Cloud cover 13).
Average visibility in December
Pinesdale, MT
- Average visibility in December: 4mi
The months with the highest visibility are May, June, July, August, September and October (6mi).
The months with the lowest visibility are January, February, March and December (4mi).
