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 tends to be the coldest month, with temperatures averaging a daily high 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
The months with the least rainfall are January and December Rain falls for 2.2 days and accumulates 0.12" (3mm) of rain.Snowfall
January through May, October through December are months with snowfall in Saint Xavier. In Saint Xavier, Montana, in December, snow falls for 4.3 days, with typically accumulated 0.71" (18mm) of snow. Throughout the year, in Saint Xavier, Montana, 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 in Saint Xavier, Montana.On the first day of the month, sunrise is at 7:31 am and sunset at 4:29 pm. On the last day of December, in Saint Xavier, sunrise is at 7:50 am and sunset at 4:37 pm MST.
Sunshine
The average sunshine in December in Saint Xavier is 6h.UV index
January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Saint Xavier. A UV Index reading of 2, and below, represents a minimal health hazard from exposure to the Sun's UV rays for the ordinary person.Note: In December, the maximum UV index of 2 suggests this advice:
While sun exposure does not greatly affect most, individuals with fair skin, babies, and children always need vigilant safeguarding. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation. Be alert to the fact! The reflection from snow can nearly double the UV radiation of the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the coldest month in Saint Xavier?
How cold is December in Saint Xavier?
What is the average humidity in December in Saint Xavier?
What is the driest month in Saint Xavier?
How many days does it rain in December in Saint Xavier?
How many days does it snow in December in Saint Xavier?
What is the month with the shortest days in Saint Xavier?
How many hours of daylight does Saint Xavier have in December?
When are sunrise and sunset in December in Saint Xavier?
How many hours of sunshine does Saint Xavier have in December?
What are the months with the lowest UV index in Saint Xavier?
What is the UV index reading in December in Saint Xavier?
Average temperature in December
Saint Xavier, 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
Saint Xavier, 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
Saint Xavier, 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
Saint Xavier, 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
Saint Xavier, 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
Saint Xavier, 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
Saint Xavier, 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
Saint Xavier, 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
Saint Xavier, MT
- Average daylight in December: 8h and 5min
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
Saint Xavier, 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
Saint Xavier, 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
Saint Xavier, 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
Saint Xavier, 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).
Saint Xavier, Montana, USA
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