Heating degree days (F) - Delaware (US) - NOAA - Daily
This series is part of the dataset: Heating and cooling degree days (NOAA)
Download Full Dataset (.xlsx)Latest updates. In Delaware, heating degree days were 0.0 degrees Fahrenheit on 23 September 2025, as on the previous day.
Sample. In the daily series shown in the chart, there are 16,337 data points overall. The series covers the time period going from January 1981 to September 2025.
History. Here's a snapshot of some summary statistics we computed on the entire sample: degree days attained a maximum of 62.0 degrees Fahrenheit on 21 January 1985; they hit a minimum of 0.0 on 4 April 1981; they had an average value of 12.2.
Latest values
| Date | Value - Degrees Fahrenheit |
|---|---|
| 2025-09-21 | 0.0 |
| 2025-09-22 | 0.0 |
| 2025-09-23 | 0.0 |
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Series Metadata
| Field | Value |
|---|---|
| Description | Heating degree days |
| Country | Delaware (US) |
| 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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