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Weather in December in Decatur, Il

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< December >
 
Normal Max/ High Temperature 4°C (39°F)
 
Average Temperature -1°C (30°F)
 
Min/ Low Temperature -6°C (22°F)
 
Normal Precipitation 80mm (3.2in)
Average Daylight per day 09:23
Sun altitude at solar noon on the 21st day.
26.6°


  • The average temperature in Decatur, Il in December is slightly cold at -0.9 °C (30.38 °F).
  • Afternoons can be cool with average high temperatures reaching 3.8 °C (38.8 °F).
  • Overnight temperatures are generally cold with an average low of -5.6 °C (21.9 °F).
  • The range/ variation of diurnal average temperatures in December is 9.4 °C (16.9 °F).
  • The weather in December is dryish. Just 80.3mm (3.2in) of H2O precipitates .
  • The shortest day is 9:19 long and the longest day is 9:31 long with an average length of 9:23.

Check the distance to and compare the Decatur, Il December averages with somewhere beginning with:

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Weather Trend Graph for December in Decatur, Il, Usa

Graph of weather in Decatur, Il in December

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