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 30 March 2026, the same as on the previous day.
Sample. There are 16,525 records overall in the daily series displayed in the chart above. The time range covered by the series goes from January 1981 to March 2026.
History. Have a look at some summary statistics computed on the whole sample: degree days reached their highest level of 14.0 degrees Fahrenheit on 9 August 1981; they registered a minimum of 0.0 on 1 January 1981; they had a mean value of 0.5.
Latest values
| Date | Value - Degrees Fahrenheit |
|---|---|
| 2026-03-28 | 0.0 |
| 2026-03-29 | 0.0 |
| 2026-03-30 | 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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