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 1.0 degrees Fahrenheit on 21 June 2026, compared to 3.0 on 20 June.
Sample. There are 16,608 observations in the daily series presented in the plot above. The series covers the span of time extending from January 1981 to June 2026.
History. Here’s a quick look at some descriptive statistics we computed on the whole sample: degree days reached their highest level of 20.0 degrees Fahrenheit on 2 August 2006; they recorded a bottom of 0.0 on 1 January 1981; they had an average value of 1.5.
Latest values
| Date | Value - Degrees Fahrenheit |
|---|---|
| 2026-06-19 | 3.0 |
| 2026-06-20 | 3.0 |
| 2026-06-21 | 1.0 |
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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 |
Series in the same data set
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