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
December, with an average high of 28.4°F (-2°C) and a low of 16.7°F (-8.5°C), signifies the coldest month of the year.Humidity
In December, the average relative humidity is 88%.Rainfall
In Saint Ignatius, Montana, in December, it is raining for 9.8 days, with typically 1.06" (27mm) of accumulated precipitation. Throughout the year, in Saint Ignatius, there are 129.9 rainfall days, and 13.5" (343mm) of precipitation is accumulated.Snowfall
January through May, September through December are months with snowfall in Saint Ignatius. In Saint Ignatius, during December, snow falls for 14.5 days and regularly aggregates up to 5.39" (137mm) of snow. Throughout the year, in Saint Ignatius, there are 67.1 snowfall days, and 28.27" (718mm) of snow is accumulated.Daylight
With an average of 8h and 30min of daylight, December has the shortest days of the year.On the first day of the month, sunrise is at 8:03 am and sunset at 4:47 pm. On the last day of December, sunrise is at 8:23 am and sunset at 4:56 pm MST.
Sunshine
In December, the average sunshine in Saint Ignatius is 5.1h.UV index
The months with the lowest UV index in Saint Ignatius are February and December, with an average maximum UV index of 1. A UV Index estimate of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV radiation for ordinary individuals.Note: A daily high UV index of 1 in December leads to these guidelines:
Children, babies, and those with sensitive skin should always be shielded from long periods of sun exposure. For skin protection, it's recommended to minimize Sun exposure during its peak hours around midday. During bright days, sunglasses that offer UVA and UVB defense are recommended. Take careful note! The UV radiation of the Sun can be nearly doubled by snow reflection.
Frequently asked questions
What time of the year is the coldest in Saint Ignatius?
How cold is it in Saint Ignatius in December?
What is the average humidity in December in Saint Ignatius?
How many days does it rain in December in Saint Ignatius?
How much does it snow in Saint Ignatius in December?
What is the month with the shortest days in Saint Ignatius?
How many hours of daylight does Saint Ignatius have in December?
When is the sunrise / sunset in December in Saint Ignatius?
How long on average sun shines in December in Saint Ignatius?
What are the months with the lowest UV index in Saint Ignatius?
How high is the UV index in December in Saint Ignatius?
Average temperature in December
Saint Ignatius, MT
- Average high temperature in December: 28.4°F
The warmest month (with the highest average high temperature) is July (79.7°F).
The month with the lowest average high temperature is December (28.4°F).
- Average low temperature in December: 16.7°F
The month with the highest average low temperature is August (49.5°F).
The coldest month (with the lowest average low temperature) is December (16.7°F).
Average pressure in December
Saint Ignatius, MT
- Average pressure in December: 30.17"Hg
The month with the highest atmospheric pressure is January (30.18"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in December
Saint Ignatius, MT
- Average wind speed in December: 3.9mph
The windiest month (with the highest average wind speed) is April (4.8mph).
The calmest months (with the lowest average wind speed) are January, August and December (3.9mph).
Average humidity in December
Saint Ignatius, MT
- Average humidity in December: 88%
The month with the highest relative humidity is January (91%).
The month with the lowest relative humidity is August (49%).
Average rainfall in December
Saint Ignatius, MT
- Average rainfall in December: 1.06"
The wettest month (with the highest rainfall) is June (2.2").
The driest months (with the least rainfall) are July and August (0.63").
Average rainfall days in December
Saint Ignatius, MT
- Average rainfall days in December: 9.8 days
The month with the highest number of rainy days is June (15.7 days).
The month with the least rainy days is August (7.4 days).
Average snowfall in December
Saint Ignatius, MT
- Average snowfall in December: 5.39"
The month with the highest snowfall is February (6.5").
The months with the least snowfall are June, July and August (0").
Average snowfall days in December
Saint Ignatius, MT
- Average snowfall days in December: 14.5 days
The month with the highest number of snowfall days is December (14.5 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in December /
Average sunshine in December
Saint Ignatius, MT
- Average daylight in December: 8h and 3min
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: 5h and 1min
The month with the most sunshine is July (Average sunshine: 11h and 48min).
The month with the least sunshine is January (Average sunshine: 4h and 42min).
Average sunshine days in December
Saint Ignatius, MT
- Average sunshine days in December: 13.5 days
The month with the most sunshine days is July (20.8 days).
The month with the least sunshine days is February (11 days).
Average UV index in December
Saint Ignatius, MT
- Average UV index in December: 1
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are February and December (UV index 1).
Average cloud cover in December
Saint Ignatius, MT
- Average cloud cover in December: 49
The month with the most cloud cover is February (Cloud cover 52).
The month with the least cloud cover is August (Cloud cover 14).
Average visibility in December
Saint Ignatius, MT
- Average visibility in December: 4mi
The months with the highest visibility are April, May, June, July, August, September and October (6mi).
The months with the lowest visibility are January, February and December (4mi).
Saint Ignatius, Montana, USA
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