Cooling degree days (F) - Iowa (US) - NOAA - Daily
This series is part of the dataset: Heating and cooling degree days (NOAA)
Download Full Dataset (.xlsx)Latest updates. In Iowa, cooling degree days were 2.0 degrees Fahrenheit on 23 September 2025, compared to 6.0 on 22 September 2025.
Sample. There are 16,337 data points in the daily series displayed in the chart above. The time period covered by the series extends from January 1981 to September 2025.
History. Here's a snapshot of a few summary statistics computed on the entire sample: degree days were equal on average to 2.2 degrees Fahrenheit; they registered a minimum of 0.0 on 1 January 1981; they reached their highest level of 24.0 on 17 August 1988.
Latest values
| Date | Value - Degrees Fahrenheit |
|---|---|
| 2025-09-21 | 3.0 |
| 2025-09-22 | 6.0 |
| 2025-09-23 | 2.0 |
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Series Metadata
| Field | Value |
|---|---|
| Description | Cooling degree days |
| Country | Iowa (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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