December weather forecast
Glasgow, MT

Share

Weather in December

December embodies the essence of winter in Glasgow, Montana, as the weather turns significantly cold, and the landscape gets blanketed in snow. A minimal temperature rise occurs when comparing it to colder November, establishing an average between 12.7°F (-10.7°C) to 24.6°F (-4.1°C). However, snowy days tend to increase in December, making it the most "white" month. Winter sport activities peak during this time due to the city's robust snowfall. December's arrival marks not only the end of the year, but also the zenith of winter's reign in Glasgow.

Temperature

December in Glasgow suggests a modest reduction in the average high-temperature, shifting from an icy 38.3°F (3.5°C) in November to a freezing cold 24.6°F (-4.1°C). Nighttime temperature in Glasgow lowers to an average of 12.7°F (-10.7°C) in December.

Humidity

In December, the average relative humidity is 84%.

Rainfall

In Glasgow, in December, during 3 rainfall days, 0.43" (11mm) of precipitation is typically accumulated. In Glasgow, Montana, during the entire year, the rain falls for 90.8 days and collects up to 11.1" (282mm) of precipitation.

Snowfall

January through May, October through December are months with snowfall. December is the month with the most snowfall in Glasgow. Snow falls for 8.6 days and accumulates 2.6" (66mm) of snow.

Daylight

The month with the shortest days is December, with an average of 8h and 24min of daylight.
On the first day of December, sunrise is at 7:36 am and sunset at 4:14 pm. On the last day of the month, sunrise is at 7:57 am and sunset at 4:22 pm MST.

Sunshine

The average sunshine in December in Glasgow is 4.9h.

UV index

December is the month with the lowest UV index, with an average maximum UV index of 1. A UV Index of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV radiation for the ordinary person.
Note: A maximum UV index of 1 in December translates into the following recommendations:
Apart from children, who require continuous protection, most can endure sun exposure for up to an hour without experiencing burns. Protect yourself from the midday Sun's peak UV radiation by minimizing exposure. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades. Take to heart! Snow reflection can almost magnify the Sun's UV radiation twofold.
[Resources]

Frequently asked questions

How cold is December in Glasgow?

In Glasgow, in December, the average high-temperature is 24.6°F (-4.1°C), and the average low-temperature is 12.7°F (-10.7°C). The average heat index (a.k.a. 'felt air temperature', 'feels like'), which combines air temperature and relative humidity, in August is appraised at 80.6°F (27°C).

What is the average humidity in December in Glasgow?

In December, the average relative humidity in Glasgow, Montana, is 84%.

How much does it rain in Glasgow in December?

In Glasgow, during December, the rain falls for 3 days and regularly aggregates up to 0.43" (11mm) of precipitation.

When does it snow the most in Glasgow?

December is the month with the most snowfall. Snow falls for 8.6 days and accumulates 2.6" (66mm) of snow.

How many days does it snow in December in Glasgow?

In December, it is snowing for 8.6 days. Throughout December, 2.6" (66mm) of snow is accumulated.

What is the month with the shortest days in Glasgow?

The month with the shortest days in Glasgow is December, with an average of 8h and 24min of daylight.

How many hours of daylight does Glasgow have in December?

In December, the average day length in Glasgow is 8h and 26min.

When are sunrise and sunset in December in Glasgow?

In December, on the first day of the month, sunrise is at 7:36 am and sunset at 4:14 pm. On the last day of the month, sunrise is at 7:57 am and sunset at 4:22 pm MST.

How long on average sun shines in December in Glasgow?

The average sunshine duration in December in Glasgow is 4.9h.

What is the month with the lowest UV index in Glasgow?

The month with the lowest UV index is December, with an average maximum UV index of 1.

What is the UV index reading in December in Glasgow?

In Glasgow, the average daily maximum UV index in December is 1. A UV Index estimate of 2, and below, represents a low health threat from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in December
Glasgow, MT

Average temperature in December - Glasgow, MT
  • Average high temperature in December: 24.6°F

The warmest month (with the highest average high temperature) is July (83.1°F).
The month with the lowest average high temperature is February (23.7°F).

  • Average low temperature in December: 12.7°F

The month with the highest average low temperature is July (63.3°F).
The coldest month (with the lowest average low temperature) is February (10.2°F).

[Resources]

Average pressure in December
Glasgow, MT

Average pressure in December - Glasgow, MT
  • Average pressure in December: 30.13"Hg

The month with the highest atmospheric pressure is February (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.83"Hg).

[Resources]

Average wind speed in December
Glasgow, MT

Average wind speed in December - Glasgow, MT
  • Average wind speed in December: 9.3mph

The windiest month (with the highest average wind speed) is April (11.7mph).
The calmest month (with the lowest average wind speed) is February (8.8mph).

[Resources]

Average humidity in December
Glasgow, MT

Average humidity in December - Glasgow, MT
  • Average humidity in December: 84%

The month with the highest relative humidity is January (86%).
The month with the lowest relative humidity is August (42%).

[Resources]

Average rainfall in December
Glasgow, MT

Average rainfall in December - Glasgow, MT
  • Average rainfall in December: 0.43"

The wettest month (with the highest rainfall) is June (2.01").
The driest months (with the least rainfall) are January and February (0.35").

[Resources]

Average rainfall days in December
Glasgow, MT

Average rainfall days in December - Glasgow, MT
  • Average rainfall days in December: 3 days

The month with the highest number of rainy days is May (13.8 days).
The month with the least rainy days is February (2.3 days).

[Resources]

Average snowfall in December
Glasgow, MT

Average snowfall in December - Glasgow, MT
  • Average snowfall in December: 2.6"

The month with the highest snowfall is December (2.6").
The months with the least snowfall are June, July, August and September (0").

[Resources]

Average snowfall days in December
Glasgow, MT

Average snowfall days in December - Glasgow, MT
  • Average snowfall days in December: 8.6 days

The month with the highest number of snowfall days is February (9.2 days).
The months with the least snowfall days are June, July and August (0 days).

[Resources]

Average daylight in December /
Average sunshine in December
Glasgow, MT

Average daylight in December / Average sunshine in December - Glasgow, MT
  • Average daylight in December: 8h and 2min

The month with the longest days is June (Average daylight: 16h and 0min).
The month with the shortest days is December (Average daylight: 8h and 24min).

  • Average sunshine in December: 4h and 5min

The month with the most sunshine is July (Average sunshine: 11h and 48min).
The month with the least sunshine is February (Average sunshine: 4h and 42min).

[Resources]

Average sunshine days in December
Glasgow, MT

Average sunshine days in December - Glasgow, MT
  • Average sunshine days in December: 20.4 days

The month with the most sunshine days is November (21.5 days).
The month with the least sunshine days is June (13.8 days).

[Resources]

Average UV index in December
Glasgow, MT

Average UV index in December - Glasgow, MT
  • Average UV index in December: 1

The month with the highest UV index is July (UV index 7).
The month with the lowest UV index is December (UV index 1).

[Resources]

Average cloud cover in December
Glasgow, MT

Average cloud cover in December - Glasgow, MT
  • Average cloud cover in December: 47

The month with the most cloud cover is February (Cloud cover 49).
The month with the least cloud cover is July (Cloud cover 16).

[Resources]

Average visibility in December
Glasgow, MT

Average visibility in December - Glasgow, 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).

[Resources]

Glasgow, Montana, USA

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location