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 were 0.0 degrees Fahrenheit on 17 September 2026, the same value recorded on 16 September.
Sample. In this daily time series, there are a total of 16,696 records. The series covers the period extending from January 1981 to September 2026.
History. Here are a few descriptive statistics we computed on the full sample: degree days averaged 0.5 degrees Fahrenheit; they attained a maximum of 14.0 on 9 August 1981; they hit a trough of 0.0 on 1 January 1981.
Latest values
| Date | Value - Degrees Fahrenheit |
|---|---|
| 2026-09-15 | 0 |
| 2026-09-16 | 0 |
| 2026-09-17 | 0 |
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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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