+A **degree day** quantifies how much a day's average temperature deviates from a chosen base, reflecting the energy needed for heating or cooling. These cumulative values are a vital tool for predicting [Energy](/wiki/energy) consumption and understanding [Climate](/wiki/climate) impact on buildings.
+## See also
+- [Heating](/wiki/heating)
+- [Cooling](/wiki/cooling)
+- [Temperature](/wiki/temperature)
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