Cooling degree days (F) - Connecticut (US) - NOAA - Daily
This series is part of the dataset: Heating and cooling degree days (NOAA)
Download Full Dataset (.xlsx)Latest updates. In Connecticut, cooling degree days were 0.0 degrees Fahrenheit on 23 September 2025, the same as on the previous day.
Sample. The daily series plotted above has 16,337 records overall. The time period covered by the series extends from January 1981 to September 2025.
History. Here's a glimpse of some summary statistics we computed on the full sample: degree days averaged 1.8 degrees Fahrenheit; they attained a maximum of 22.0 on 22 July 2011; they recorded a minimum of 0.0 on 1 January 1981.
Latest values
| Date | Value - Degrees Fahrenheit |
|---|---|
| 2025-09-21 | 0.0 |
| 2025-09-22 | 0.0 |
| 2025-09-23 | 0.0 |
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Series Metadata
| Field | Value |
|---|---|
| Description | Cooling degree days |
| Country | Connecticut (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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