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 7.0 degrees Fahrenheit on 14 August 2026, versus 9.0 on the previous day.
Sample. There are 16,662 records in the daily series presented in the graph above. The series covers the time span extending from January 1981 to August 2026.
History. Here’s a quick look at a few simple statistics computed on the whole sample: degree days reached their highest level of 22.0 degrees Fahrenheit on 22 July 2011; they registered a minimum of 0.0 on 1 January 1981; they had a mean value of 1.8.
Latest values
| Date | Value - Degrees Fahrenheit |
|---|---|
| 2026-08-12 | 9.0 |
| 2026-08-13 | 9.0 |
| 2026-08-14 | 7.0 |
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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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