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 stands out as Glen's coldest month, with temperatures ranging between an average high of 25.7°F (-3.5°C) and a low of 10.6°F (-11.9°C).Humidity
The average relative humidity in December in Glen is 84%.Rainfall
In Glen, in December, during 6.2 rainfall days, 0.51" (13mm) of precipitation is typically accumulated. Throughout the year, there are 111 rainfall days, and 9.25" (235mm) of precipitation is accumulated.Snowfall
January through June, September through December are months with snowfall. In December, it is snowing for 12 days. Throughout December, 3.9" (99mm) of snow is accumulated. In Glen, during the entire year, snow falls for 73.8 days and aggregates up to 27.52" (699mm) of snow.Daylight
With an average of 8h and 48min of daylight, December has the shortest days of the year in Glen.On the first day of December, sunrise is at 7:51 am and sunset at 4:48 pm. On the last day of the month, sunrise is at 8:10 am and sunset at 4:57 pm MST.
Sunshine
The month with the least sunshine in Glen is December, with an average of 6.2h of sunshine.UV index
The average daily maximum UV index in December in Glen is 2. A UV Index reading of 2, and below, represents a low threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.Note: An average maximum UV index of 2 in December leads to these recommendations:
Unlike children, who always need sun protection, most individuals can remain in the sun for up to an hour without getting burnt. The Sun is most powerful around mid-day, so it's a good practice to reduce direct exposure. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes. Be mindful! The reflection from snow can increase the Sun's UV radiation nearly twice.
Frequently asked questions
What is the coldest month in Glen?
How cold is it in Glen in December?
What is the average humidity in December in Glen?
How many days does it rain in December in Glen?
How much does it snow in Glen in December?
What is the month with the shortest days in Glen?
What is the average length of the day in December in Glen?
When are sunrise and sunset in December in Glen?
What is the month with the least sunshine in Glen?
How many hours of sunshine does Glen have in December?
What is the UV index intensity in December in Glen?
Average temperature in December
Glen, MT
- Average high temperature in December: 25.7°F
The warmest month (with the highest average high temperature) is July (78.4°F).
The month with the lowest average high temperature is December (25.7°F).
- Average low temperature in December: 10.6°F
The month with the highest average low temperature is July (47.8°F).
The coldest month (with the lowest average low temperature) is December (10.6°F).
Average pressure in December
Glen, MT
- Average pressure in December: 30.23"Hg
The month with the highest atmospheric pressure is January (30.24"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in December
Glen, MT
- Average wind speed in December: 6.6mph
The windiest month (with the highest average wind speed) is November (6.8mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).
Average humidity in December
Glen, MT
- Average humidity in December: 84%
The months with the highest relative humidity are January and February (85%).
The months with the lowest relative humidity are July and August (45%).
Average rainfall in December
Glen, MT
- Average rainfall in December: 0.51"
The wettest month (with the highest rainfall) is June (1.34").
The driest month (with the least rainfall) is January (0.43").
Average rainfall days in December
Glen, MT
- Average rainfall days in December: 6.2 days
The month with the highest number of rainy days is May (13.9 days).
The months with the least rainy days are November and December (6.2 days).
Average snowfall in December
Glen, MT
- Average snowfall in December: 3.9"
The month with the highest snowfall is February (4.72").
The months with the least snowfall are July and August (0").
Average snowfall days in December
Glen, MT
- Average snowfall days in December: 12 days
The month with the highest number of snowfall days is February (13.2 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in December /
Average sunshine in December
Glen, 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 1min
The month with the most sunshine is July (Average sunshine: 12h and 0min).
The month with the least sunshine is December (Average sunshine: 6h and 12min).
Average sunshine days in December
Glen, MT
- Average sunshine days in December: 18 days
The month with the most sunshine days is July (18.7 days).
The month with the least sunshine days is April (10.7 days).
Average UV index in December
Glen, MT
- Average UV index in December: 2
The month with the highest UV index is July (UV index 5).
The month with the lowest UV index is February (UV index 1).
Average cloud cover in December
Glen, MT
- Average cloud cover in December: 39
The month with the most cloud cover is February (Cloud cover 41).
The months with the least cloud cover are July and August (Cloud cover 13).
Average visibility in December
Glen, MT
- Average visibility in December: 5mi
The months with the highest visibility are March, April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, February and December (5mi).
Glen, Montana, USA
Weather forecast for your location
2. Allow the app to use your location
