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Weather in December in Casper, Wy

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< December >
 
Normal Max/ High Temperature 1°C (34°F)
 
Average Temperature -5°C (24°F)
 
Min/ Low Temperature -10°C (14°F)
 
Normal Precipitation 17mm (0.7in)
Average Daylight per day 09:03
Sun altitude at solar noon on the 21st day.
23.7°


  • The average temperature in Casper, Wy in December is slightly cold at -4.6 °C (23.72 °F).
  • Afternoons can be very cool with average high temperatures reaching 1.1 °C (34 °F).
  • Overnight temperatures are generally very cold with an average low of -10.2 °C (13.6 °F).
  • In December the mean diurnal temperature variation/ range is 11.3 °C (20.3 °F).
  • The weather in December is droughty. A paltry 16.8mm (0.7in) of water tumbles.
  • The shortest day is 9:00 long and the longest day is 9:13 long with an average length of 9:03.

Check the distance to and compare the Casper, Wy December averages with somewhere beginning with:

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Weather Trend Graph for December in Casper, Wy, Usa

Graph of weather in Casper, Wy in December

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