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 1.0 degrees Fahrenheit on 25 March 2025, compared to 3.0 on 24 March 2025.
Sample. There are 16,155 data points overall in the daily series shown in the plot above. The time range covered by the series is from January 1981 to March 2025.
History. Here's a snapshot of a few statistics calculated on the whole sample: degree days reached their highest level of 36.0 degrees Fahrenheit on 22 December 1990; they reached a trough of 0.0 on 29 April 1981; they had a mean value of 7.0.
Latest values
| Date | Value - Degrees Fahrenheit |
|---|---|
| 2025-03-23 | 7.0 |
| 2025-03-24 | 3.0 |
| 2025-03-25 | 1.0 |
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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 |