Cooling degree days (F) - Washington (US) - NOAA - Daily
This series is part of the dataset: Heating and cooling degree days (NOAA)
Download Full Dataset (.xlsx)Latest updates. In Washington, cooling degree days stood at 0.0 degrees Fahrenheit on 23 September 2025, as on 22 September 2025.
Sample. This daily series has 16,337 observations. The series covers the period going from January 1981 to September 2025.
History. Here's a glimpse of some summary statistics we computed on the whole sample: degree days reached their maximum of 14.0 degrees Fahrenheit on 9 August 1981; they recorded a minimum of 0.0 on 1 January 1981; they were equal on average to 0.5.
Latest values
| Date | Value - Degrees Fahrenheit |
|---|---|
| 2025-09-21 | 0.0 |
| 2025-09-22 | 0.0 |
| 2025-09-23 | 0.0 |
Suggestion. To simplify complex analyses, we group time series into data sets and worksheets. When you look below, you will find how we structured further material related to the statistics provided here.
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Series Metadata
| Field | Value |
|---|---|
| Description | Cooling degree days |
| Country | Washington (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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