Cooling degree days (F) - Massachusetts (US) - NOAA - Daily
This series is part of the dataset: Heating and cooling degree days (NOAA)
Download Full Dataset (.xlsx)Latest updates. In Massachusetts, cooling degree days stood at 5.0 degrees Fahrenheit on 14 August 2026, compared to 7.0 on the previous day.
Sample. The daily series shown in the graph has 16,662 data points in total. The time range covered by the series stretches from January 1981 to August 2026.
History. Here's a snapshot of some simple statistics calculated on the full sample: degree days reached their highest level of 20.0 degrees Fahrenheit on 2 August 2006; they reached their minimum of 0.0 on 1 January 1981; they had a mean of 1.5.
Latest values
| Date | Value - Degrees Fahrenheit |
|---|---|
| 2026-08-12 | 7.0 |
| 2026-08-13 | 7.0 |
| 2026-08-14 | 5.0 |
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Series Metadata
| Field | Value |
|---|---|
| Description | Cooling degree days |
| Country | Massachusetts (US) |
| Economic concept | Cooling 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 | (max_daily_temperature + min_daily_temperature) / 2 - 65F |
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