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 7.0 degrees Fahrenheit on 14 May 2026, compared to 3.0 on 13 May 2026.
Sample. This daily time series has 16,570 observations in total. The time period covered by the series goes from January 1981 to May 2026.
History. Here’s a quick look at a few summary statistics computed on the whole sample: degree days had a mean value of 12.3 degrees Fahrenheit; they hit a peak of 62.0 on 21 January 1985; they recorded a bottom of 0.0 on 4 April 1981.
Latest values
| Date | Value - Degrees Fahrenheit |
|---|---|
| 2026-05-12 | 11.0 |
| 2026-05-13 | 3.0 |
| 2026-05-14 | 7.0 |
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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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