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 2.0 degrees Fahrenheit on 17 September 2026, compared to 0.0 on the previous day.
Sample. In the daily time series presented in the chart, there are 16,696 data points overall. The time range covered by the series is from January 1981 to September 2026.
History. Check out some simple statistics calculated on the entire sample: degree days were equal on average to 1.8 degrees Fahrenheit; they reached a minimum of 0.0 on 1 January 1981; they hit a maximum of 22.0 on 22 July 2011.
Latest values
| Date | Value - Degrees Fahrenheit |
|---|---|
| 2026-09-15 | 0 |
| 2026-09-16 | 0 |
| 2026-09-17 | 2.00000 |
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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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