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January Heating Degree Days

A heating degree day (HDD) is a measure of how cold a location is. It’s derived by comparing the average outdoor temperature to a baseline of 65 degrees. More extreme cold temperatures result in a higher number of HDDs, which typically translate to an increased demand for space heating by energy consumers. The below data sets detail the number of HDDs that occurred in the month of January during the past 3 years, as well as the month’s 10-year average, broken down by Census Division.

Census Division

Jan 2023 Jan 2022 Jan 2021 Jan 10-Year Average
New England 925 1303 1124 1167
Middle Atlantic 844 1242 1065 1113
East North Central 997 1391 1147 1237
West North Central 1182 1443 1181 1303
South Atlantic 449 644 579 598
East South Central 579 849 738 776
West South Central 401 576 515 538
Mountain 963 886 875 879
Pacific 632 539 550 543
United States 715 912 805 844

 

You can review the National Weather Service’s national temperature forecast here. Additional HDD data can be found under the Supply and Logistics section on the Member Dashboard of NPGA’s website. For more information, contact NPGA’s Director of State Affairs, Jacob Peterson.