Heating degree days (F) - United States (excluding Alaska and Hawaii) - NOAA - Daily
This series is part of the dataset: Heating and cooling degree days (NOAA)
Download Full Dataset (.xlsx)Latest updates. In the United States (excluding Alaska and Hawaii), heating degree days were 1.0 degrees Fahrenheit on 23 September 2025, the same value recorded on the previous day.
Sample. There are 16,337 observations in the daily time series presented in the chart above. The series covers the time period extending from January 1981 to September 2025.
History. Here are a few statistics computed on the full sample: degree days peaked at 51.0 degrees Fahrenheit on 25 December 1983; they recorded a bottom of 0.0 on 29 May 1981; they had a mean of 11.6.
Latest values
| Date | Value - Degrees Fahrenheit |
|---|---|
| 2025-09-21 | 1.0 |
| 2025-09-22 | 1.0 |
| 2025-09-23 | 1.0 |
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Series Metadata
| Field | Value |
|---|---|
| Description | Heating degree days |
| Country | United States (excluding Alaska and Hawaii) |
| Economic concept | Heating needs |
| Data type | Estimate based on daily minimum and maximum temperatures |
| Deflation method | Not applicable |
| Seasonally adjusted | No |
| Rescaling | Population-weighted averages of weather-station observations |
| Frequency | Daily |
| Unit | Degrees Fahrenheit |
| Source | NOAA National Weather Service |
| Source type | Federal Administration |
| Data licence | Not copyrightable under U.S. law |
| Measure type | 65F - (max_daily_temperature + min_daily_temperature) / 2 |
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