Heating 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, heating degree days were 1.0 degrees Fahrenheit on 23 September 2025, compared to 7.0 on the previous day.
Sample. There are 16,337 observations in the daily time series shown in the plot above. The period covered by the series extends from January 1981 to September 2025.
History. Here are some simple statistics we computed on the entire sample: degree days hit a trough of 0.0 degrees Fahrenheit on 25 May 1981; they attained a maximum of 65.0 on 18 January 1982; they had a mean of 16.1.
Latest values
| Date | Value - Degrees Fahrenheit |
|---|---|
| 2025-09-21 | 8.0 |
| 2025-09-22 | 7.0 |
| 2025-09-23 | 1.0 |
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Series Metadata
| Field | Value |
|---|---|
| Description | Heating degree days |
| Country | Connecticut (US) |
| Economic concept | Heating 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 | 65F - (max_daily_temperature + min_daily_temperature) / 2 |
Series in the same data set
Discover the other time series included in this data set.