December weather forecastLodge Grass, MT
December
Weather in December
The first month of the winter, December, is also a subzero cold month in Lodge Grass, Montana, with an average temperature varying between 18.1°F (-7.7°C) and 31.3°F (-0.4°C).Temperature
Lodge Grass experiences its lowest temperatures in December, with an average peak of 31.3°F (-0.4°C) and a low of 18.1°F (-7.7°C).Humidity
In December, the average relative humidity is 73%.Rainfall
January and December are months with the least rain when the rain falls for 2.2 days and typically aggregates up to 0.12" (3mm) of rain.Snowfall
Months with snowfall are January through May, October through December. In Lodge Grass, in December, during 4.3 snowfall days, 0.71" (18mm) of snow is typically accumulated. Throughout the year, there are 23.9 snowfall days, and 6.22" (158mm) of snow is accumulated.Daylight
With an average of 8h and 48min of daylight, December has the shortest days of the year.On the first day of December, sunrise is at 7:29 am and sunset at 4:28 pm. On the last day of the month, sunrise is at 7:48 am and sunset at 4:36 pm MST.
Sunshine
In December, the average sunshine is 6h.UV index
The months with the lowest UV index in Lodge Grass are January through March, November and December, with an average maximum UV index of 2. A UV Index estimate of 2, and below, represents a minimal health vulnerability from unsafe exposure to UV radiation for average individuals.Note: A typical high UV index of 2 in December suggests the following recommendations:
While most people can stay under the sun for an hour without burning, children must always be guarded against sun exposure. When the Sun's UV radiation is most intense during midday, it's best to find shade and limit exposure. Employ a hat with a wide brim for robust protection, cutting UV exposure by half. Heads up! The UV radiation from the Sun can almost be doubled by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Lodge Grass, MT
- Average high temperature in December: 31.3°F
The warmest month (with the highest average high temperature) is July (85.8°F).
The month with the lowest average high temperature is December (31.3°F).
- Average low temperature in December: 18.1°F
The months with the highest average low temperature are July and August (61.3°F).
The coldest month (with the lowest average low temperature) is February (17.8°F).
Average pressure in December
Lodge Grass, MT
- Average pressure in December: 30.13"Hg
The months with the highest atmospheric pressure are January and December (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.85"Hg).
Average wind speed in December
Lodge Grass, MT
- Average wind speed in December: 8.5mph
The windiest month (with the highest average wind speed) is January (8.8mph).
The calmest month (with the lowest average wind speed) is July (6.9mph).
Average humidity in December
Lodge Grass, MT
- Average humidity in December: 73%
The months with the highest relative humidity are January and February (76%).
The month with the lowest relative humidity is August (38%).
Average rainfall in December
Lodge Grass, MT
- Average rainfall in December: 0.12"
The wettest month (with the highest rainfall) is May (0.47").
The driest months (with the least rainfall) are January and December (0.12").
Average rainfall days in December
Lodge Grass, MT
- Average rainfall days in December: 2.2 days
The month with the highest number of rainy days is May (6.1 days).
The month with the least rainy days is December (2.2 days).
Average snowfall in December
Lodge Grass, MT
- Average snowfall in December: 0.71"
The month with the highest snowfall is February (1.57").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Lodge Grass, MT
- Average snowfall days in December: 4.3 days
The month with the highest number of snowfall days is February (5.6 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in December /
Average sunshine in December
Lodge Grass, 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 0min
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 36min).
Average sunshine days in December
Lodge Grass, MT
- Average sunshine days in December: 26.5 days
The month with the most sunshine days is September (26.8 days).
The month with the least sunshine days is February (21.6 days).
Average UV index in December
Lodge Grass, MT
- Average UV index in December: 2
The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover in December
Lodge Grass, MT
- Average cloud cover in December: 39
The month with the most cloud cover is February (Cloud cover 42).
The months with the least cloud cover are July and August (Cloud cover 14).
Average visibility in December
Lodge Grass, 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).
