Heating 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, heating degree days stood at 5.0 degrees Fahrenheit on 23 September 2025, compared to 7.0 on 22 September.
Sample. In this daily series, there are 16,337 data points in total. The time range covered by the series extends from January 1981 to September 2025.
History. Check out a few statistics we calculated on the full sample: degree days reached their maximum of 55.0 degrees Fahrenheit on 23 December 1983; they hit a trough of 0.0 on 3 July 1981; they had an average value of 15.1.
Latest values
| Date | Value - Degrees Fahrenheit |
|---|---|
| 2025-09-21 | 9.0 |
| 2025-09-22 | 7.0 |
| 2025-09-23 | 5.0 |
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Series Metadata
| Field | Value |
|---|---|
| Description | Heating degree days |
| Country | Washington (US) |
| Economic concept | Heating 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 | 65F - (max_daily_temperature + min_daily_temperature) / 2 |
Series in the same data set
Discover the other time series included in this data set.