December weather forecastMcAllister, MT
December
Weather in December
December, the first month of the winter in McAllister, is still a freezing cold month, with an average temperature ranging between min 7.7°F (-13.5°C) and max 22.3°F (-5.4°C).Temperature
McAllister's coldest weather arrives in December, when temperatures average a high of 22.3°F (-5.4°C) and a low of 7.7°F (-13.5°C).Humidity
The average relative humidity in December in McAllister is 89%.Rainfall
December is the month with the least rainfall in McAllister. Rain falls for 4.7 days and accumulates 0.75" (19mm) of precipitation.Snowfall
Months with snowfall are January through December. In McAllister, during December, snow falls for 15.5 days and regularly aggregates up to 6.3" (160mm) of snow. Throughout the year, in McAllister, there are 136.1 snowfall days, and 86.93" (2208mm) of snow is accumulated.Daylight
With an average of 8h and 48min of daylight, December has the shortest days of the year in McAllister.On the first day of the month, sunrise is at 7:47 am and sunset at 4:45 pm. On the last day of December, sunrise is at 8:06 am and sunset at 4:53 pm MST.
Sunshine
In December, the average sunshine in McAllister, Montana, is 4.9h.UV index
The average daily maximum UV index in December is 2. A UV Index estimate of 2, and below, represents a minimal health vulnerability from unprotected exposure to Sun's UV rays for the ordinary person.Note: The maximum daily UV index of 2 in December interprets into the following recommendations:
Extended exposure to the sun should always be avoided by children, infants, and those with sensitive skin. To guard against the harmful effects of the Sun, minimize exposure during midday. Employ a hat with a wide brim for robust protection, cutting UV exposure by half. Be cautious! The UV radiation from the Sun can be magnified almost twofold by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
McAllister, MT
- Average high temperature in December: 22.3°F
The warmest month (with the highest average high temperature) is July (74.5°F).
The month with the lowest average high temperature is December (22.3°F).
- Average low temperature in December: 7.7°F
The month with the highest average low temperature is August (46°F).
The coldest month (with the lowest average low temperature) is December (7.7°F).
Average pressure in December
McAllister, MT
- Average pressure in December: 30.21"Hg
The month with the highest atmospheric pressure is January (30.22"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in December
McAllister, MT
- Average wind speed in December: 7mph
The windiest month (with the highest average wind speed) is January (7.1mph).
The calmest month (with the lowest average wind speed) is August (5mph).
Average humidity in December
McAllister, MT
- Average humidity in December: 89%
The month with the highest relative humidity is February (90%).
The month with the lowest relative humidity is August (50%).
Average rainfall in December
McAllister, MT
- Average rainfall in December: 0.75"
The wettest month (with the highest rainfall) is May (2.36").
The driest month (with the least rainfall) is December (0.75").
Average rainfall days in December
McAllister, MT
- Average rainfall days in December: 4.7 days
The month with the highest number of rainy days is June (16.5 days).
The month with the least rainy days is November (2.9 days).
Average snowfall in December
McAllister, MT
- Average snowfall in December: 6.3"
The month with the highest snowfall is April (14.76").
The month with the least snowfall is August (0.08").
Average snowfall days in December
McAllister, MT
- Average snowfall days in December: 15.5 days
The month with the highest number of snowfall days is April (19.9 days).
The month with the least snowfall days is August (0.3 days).
Average daylight in December /
Average sunshine in December
McAllister, 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: 4h and 54min
The month with the most sunshine is July (Average sunshine: 11h and 36min).
The month with the least sunshine is January (Average sunshine: 4h and 42min).
Average sunshine days in December
McAllister, MT
- Average sunshine days in December: 16 days
The month with the most sunshine days is January (16.3 days).
The month with the least sunshine days is April (6.9 days).
Average UV index in December
McAllister, MT
- Average UV index in December: 2
The month with the highest UV index is July (UV index 5).
The months with the lowest UV index are January and February (UV index 1).
Average cloud cover in December
McAllister, MT
- Average cloud cover in December: 55
The month with the most cloud cover is February (Cloud cover 60).
The month with the least cloud cover is August (Cloud cover 17).
Average visibility in December
McAllister, MT
- Average visibility in December: 4mi
The months with the highest visibility are June, July, August, September and October (6mi).
The months with the lowest visibility are January, February and December (4mi).
