Cooling degree days (F) - Illinois (US) - NOAA - Daily
This series is part of the dataset: Heating and cooling degree days (NOAA)
Download Full Dataset (.xlsx)Latest updates. In Illinois, cooling degree days were 0.0 degrees Fahrenheit on 28 December 2025, the same value recorded on 27 December 2025.
Sample. There are 16,433 observations overall in the daily time series displayed in the plot above. The series covers the span of time extending from January 1981 to December 2025.
History. Check out some simple statistics we computed on the whole sample: degree days reached their highest level of 24.0 degrees Fahrenheit on 14 July 1995; they registered a minimum of 0.0 on 1 January 1981; they were equal on average to 2.5.
Latest values
| Date | Value - Degrees Fahrenheit |
|---|---|
| 2025-12-26 | 0.0 |
| 2025-12-27 | 0.0 |
| 2025-12-28 | 0.0 |
Tip. Our metadata often contain links to the sources of the time-series data shown on FetchSeries. You can use these links to find more details.
Not for investment purposes. Any financial data found on this web site are not not supposed to be used for investment purposes or as a basis for making financial decisions. Users should seek expert advice and perform independent analysis before pledging money to any investment.
Series Metadata
| Field | Value |
|---|---|
| Description | Cooling degree days |
| Country | Illinois (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
Discover the other time series included in this data set.