Heating degree days (F) - California (US) - NOAA - Daily
This series is part of the dataset: Heating and cooling degree days (NOAA)
Download Full Dataset (.xlsx)Latest updates. In California, heating degree days were 18.0 degrees Fahrenheit on 28 December 2025, the same value recorded on the previous day.
Sample. In this daily time series, there are 16,433 observations. The series covers the time range going from January 1981 to December 2025.
History. Have a look at a few statistics calculated on the entire sample: degree days had a mean value of 6.9 degrees Fahrenheit; they registered a minimum of 0.0 on 29 April 1981; they hit a peak of 36.0 on 22 December 1990.
Latest values
| Date | Value - Degrees Fahrenheit |
|---|---|
| 2025-12-26 | 15.0 |
| 2025-12-27 | 18.0 |
| 2025-12-28 | 18.0 |
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Series Metadata
| Field | Value |
|---|---|
| Description | Heating degree days |
| Country | California (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.