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 2024 | Jan 2023 | Jan 2022 | Jan 10-Year Average |
| New England | 1088 | 925 | 1303 | 1145 |
| Middle Atlantic | 1019 | 844 | 1242 | 1085 |
| East North Central | 1191 | 997 | 1391 | 1204 |
| West North Central | 1341 | 1182 | 1443 | 1289 |
| South Atlantic | 576 | 449 | 644 | 580 |
| East South Central | 853 | 579 | 849 | 760 |
| West South Central | 635 | 401 | 576 | 537 |
| Mountain | 916 | 963 | 886 | 887 |
| Pacific | 580 | 632 | 539 | 557 |
| United States | 841 | 715 | 912 | 831 |
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.
Related News
New York Confirms CLCPA will Increase Energy Costs
March 12, 2026
In 2019, New York passed the Climate Leadership and Community Protection Act (CLCPA) that requires the state to reduce economy-wide GHG emissions 4...
Propane Promotes Energy & Economic Security
March 12, 2026
Ongoing conflict in the Middle East has resulted in oil refineries and natural gas processing facilities in the region scaling back operations or g...
Propane Opportunities from the “Ratepayer Protection Pledge”
March 12, 2026
Last week President Donald Trump issued a proclamation entitled the “Ratepayer Protection Pledge.” This pledge calls on United States hyperscal...