{"api":"The Fill Line Data API","version":"v1","docs":"https://fill-line.com/api","data_as_of":"2026-11-09","data_as_of_label":"week of Nov 9, 2026","data_pulled_at":"2026-11-12T00:16:11.666Z","generated_at":"2026-11-12T07:47:15.204Z","attribution":"Credit The Fill Line (fill-line.com) with a visible link to the page the figure came from; every record carries its page_url.","id":"heating-demand/us","section":"heating-demand","section_label":"Heating demand","title":"US heating degree days (propane-weighted)","subtitle":"Weekly heating degree days weighted by each region's propane-heating households, from the NOAA Climate Prediction Center. The weather driver of propane heating demand.","description":"US propane-weighted heating degree days: 89 HDD for the week of Nov 9, 2026, from the NOAA CPC weekly summary. The weather driver of propane heating demand.","page_url":"https://fill-line.com/heating-demand/us","headline":"89","unit":"HDD","data_through":"2026-11-09","date_precision":"weekly","frequency":"Weekly","status":"current","source":"NOAA Climate Prediction Center, weekly heating degree day summary","provenance":{"source":"NOAA Climate Prediction Center, weekly heating degree day summary","series":"Propane (LP gas) household-weighted heating degree days","basis":"Population-weighted by propane-heating household share","geography":"United States","unit":"HDD","period":"Weekly total","lastObservation":"week of Nov 9, 2026","frequency":"Weekly"},"citation":"US heating degree days (propane-weighted) were 89 HDD in the week of Nov 9, 2026 (NOAA Climate Prediction Center). The Fill Line, data through week of Nov 9, 2026. https://fill-line.com/heating-demand/us","series":[{"label":"Weekly 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over week","89","59","+50.8%"],["vs 4 weeks ago","89","28","+217.9%"],["Year over year","89","121","-26.4%"],["vs 5-yr median","89","121","-26.4%"]]},{"caption":"This season against the last five","columns":["Heating year","Week ending","Season to date (HDD)","Normal to date","vs normal","Full season (HDD)","Full season vs normal","Coldest week (HDD)"],"rows":[["2026-27 (so far)","Nov 9, 2026","356","523","32% below","in progress","",""],["2025-26","Nov 11, 2025","478","559","14% below","4,420","8% below","291 (Jan 27, 2026)"],["2024-25","Nov 12, 2024","394","578","32% below","4,494","7% below","265 (Jan 21, 2025)"],["2023-24","Nov 6, 2023","411","472","13% below","4,224","13% below","292 (Jan 22, 2024)"],["2022-23","Nov 7, 2022","438","489","10% below","4,599","4% below","283 (Dec 26, 2022)"],["2021-22","Nov 8, 2021","377","506","25% below","4,478","7% below","254 (Jan 31, 2022)"]],"footnote":"Each heating year runs July 1 to June 30. Season to date is CPC's cumulative propane-weighted total through the week ending on the date shown, the week closest to this page's latest reading in each year. Normal is CPC's normal for the same span. The coldest week is the largest seven-day total of the year."}]}