Weather in December in Great Falls, Montana

< December >
	Normal Max/ High Temperature	1°C (33°F)
	Average Temperature	-5°C (24°F)
	Min/ Low Temperature	-10°C (15°F)
	Normal Precipitation	22mm (0.9in)
	Number of Wet Days (probability of rain on a day)	6 (19%)
	Average Sunlight per day	04h 17'
	Average Daylight per day	08h 30'
	Sunny (Cloudy) Daylight Hours	52% (48%)
	Sun altitude at solar noon on the 21st day.	19.1°

• The average temperature in Great Falls, Montana in December is slightly cold at -4.5 °C (23.9 °F).
• Afternoons can be very cool with average high temperatures reaching 0.6 °C (33.1 °F).
• Overnight temperatures are generally cold with an average low of -9.7 °C (14.5 °F).
• The mean diurnal temperature variation/ range in December is 10.3 °C (18.5 °F).
• Precipitation averages for December are low with 21.6mm (0.9 in) recorded across 6 days.
• In December the blue above Great Falls, Montana is a little dull having an average of a modest 4h 17' of splendid sunlight per day.
• The shortest day is 8h 25' long and the longest day is 8h 41' long with an average length of 8h 30'.
• There are approximately 4h 01' per day when the sun is occluded by cloud, haze, fog etc.
• It is sunny approximately 51.6% of daylight hours and cloudy 48.4% of daylight hours.

Weather Trend Graph for December in Great Falls, Montana, Usa