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Weather in December in Great Falls, Montana

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< 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 04:17
Average Daylight per day 08:30
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 variation/ range of diurnal mean temperatures in December is 10.3 °C (18.5 °F).
  • The weather in December is somewhat parched with periodic snow. A paltry 21.6mm (0.9in) of H2O descends during on average 6 days.
  • In December the skies in Great Falls, Montana are a little dull with on average a modest 4:17 of brilliant sunlight daily.
  • The shortest day is 8:25 long and the longest day is 8:41 long with an average length of 8:30.
  • There are approximately 4:01 per day when bright sunshine is absent due to cloud, haze or the sun being too low on the horizon to register.
  • It is sunny approximately 51.6% of daylight hours and cloudy 48.4% of daylight hours.

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

Graph of weather in Great Falls, Montana in December

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