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Heating Degree Days | Cooling Degree Days | The Weather Channel

Note: Heating degree days are weighted by residential gas customers, vary slightly across regions, and represent a composite of all NiSource market areas. Normal degree days change slightly year to year due to updated station weightings and rolling 30 year averages.

Note: Cooling degree days are weighted by residential electric customers. Normal degree days change slightly year to year due to updated station weightings and rolling 30 year averages.

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