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 were 34.0 degrees Fahrenheit on 28 December 2025, compared to 32.0 on 27 December.
Sample. There are 16,433 records overall in the daily time series displayed in the plot above. The series covers the span of time extending from January 1981 to December 2025.
History. Take a look at a few summary statistics we calculated on the entire sample: degree days averaged 15.1 degrees Fahrenheit; they peaked at 55.0 on 23 December 1983; they recorded a bottom of 0.0 on 3 July 1981.
Latest values
| Date | Value - Degrees Fahrenheit |
|---|---|
| 2025-12-26 | 28.0 |
| 2025-12-27 | 32.0 |
| 2025-12-28 | 34.0 |
Hint. One of the advantages of our web site is that we publish complete metadata. Check it below to gain insights on the characteristics of the time series that you use in your work.
Not for investment purposes. Time series and other data found on this web site are not not supposed to be used for investment purposes or any other financial decision. Users should consult expert advice and perform independent analysis before pledging money to any investment.
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.