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 14 May 2026, the same as on the previous day.
Sample. In this daily time series, there are 16,570 observations in total. The series covers the span of time extending from January 1981 to May 2026.
History. Here's a glimpse of a few simple statistics computed on the whole sample: degree days hit a minimum of 0.0 degrees Fahrenheit on 1 January 1981; they reached their highest level of 14.0 on 9 August 1981; they were equal on average to 0.5.
Latest values
| Date | Value - Degrees Fahrenheit |
|---|---|
| 2026-05-12 | 0.0 |
| 2026-05-13 | 0.0 |
| 2026-05-14 | 0.0 |
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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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