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 3.0 degrees Fahrenheit on 21 June 2026, versus 4.0 on 20 June 2026.
Sample. There are 16,608 observations in the daily time series presented in the graph above. The span of time covered by the series is from January 1981 to June 2026.
History. Here’s a quick look at a few statistics we computed on the entire sample: degree days averaged 15.2 degrees Fahrenheit; they recorded their highest level of 55.0 on 23 December 1983; they hit a trough of 0.0 on 3 July 1981.
Latest values
| Date | Value - Degrees Fahrenheit |
|---|---|
| 2026-06-19 | 1.0 |
| 2026-06-20 | 4.0 |
| 2026-06-21 | 3.0 |
Heads-up. 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.