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 26.0 degrees Fahrenheit on 12 February 2026, compared to 25.0 on 11 February.
Sample. In this daily series, there are 16,479 records overall. The time range covered by the series stretches from January 1981 to February 2026.
History. Have a look at some summary statistics we computed on the entire sample: degree days averaged 15.1 degrees Fahrenheit; they recorded a minimum of 0.0 on 3 July 1981; they recorded a maximum of 55.0 on 23 December 1983.
Latest values
| Date | Value - Degrees Fahrenheit |
|---|---|
| 2026-02-10 | 22.0 |
| 2026-02-11 | 25.0 |
| 2026-02-12 | 26.0 |
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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 |
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