Cooling 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, cooling degree days were 13.0 degrees Fahrenheit on 14 August 2026, versus 14.0 on 13 August 2026.
Sample. There are 16,662 data points overall in the daily time series shown in the graph above. The series covers the period stretching from January 1981 to August 2026.
History. Here’s a quick look at some summary statistics calculated on the entire sample: degree days were equal on average to 3.3 degrees Fahrenheit; they reached their lowest level of 0.0 on 1 January 1981; they achieved a maximum of 25.0 on 22 July 2011.
Latest values
| Date | Value - Degrees Fahrenheit |
|---|---|
| 2026-08-12 | 13.0 |
| 2026-08-13 | 14.0 |
| 2026-08-14 | 13.0 |
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Series Metadata
| Field | Value |
|---|---|
| Description | Cooling degree days |
| Country | Delaware (US) |
| Economic concept | Cooling 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 | (max_daily_temperature + min_daily_temperature) / 2 - 65F |
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