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 2.0 degrees Fahrenheit on 30 March 2026, compared to 1.0 on 29 March.
Sample. There are 16,525 observations overall in the daily time series shown in the graph above. The series covers the span of time stretching from January 1981 to March 2026.
History. Take a look at a few summary statistics computed on the whole sample: degree days hit a peak of 36.0 degrees Fahrenheit on 22 December 1990; they recorded a bottom of 0.0 on 29 April 1981; they had a mean of 6.9.
Latest values
| Date | Value - Degrees Fahrenheit |
|---|---|
| 2026-03-28 | 1.0 |
| 2026-03-29 | 1.0 |
| 2026-03-30 | 2.0 |
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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.