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 stood at 3.0 degrees Fahrenheit on 14 May 2026, as on the previous day.
Sample. There are 16,570 data points overall in the daily series shown in the chart above. The period covered by the series extends from January 1981 to May 2026.
History. Here's a snapshot of a few descriptive statistics computed on the full sample: degree days hit a maximum of 36.0 degrees Fahrenheit on 22 December 1990; they recorded a minimum of 0.0 on 29 April 1981; they were equal on average to 6.9.
Latest values
| Date | Value - Degrees Fahrenheit |
|---|---|
| 2026-05-12 | 0.0 |
| 2026-05-13 | 3.0 |
| 2026-05-14 | 3.0 |
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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 |
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