Cooling degree days (F) - Maryland (US) - NOAA - Daily
This series is part of the dataset: Heating and cooling degree days (NOAA)
Download Full Dataset (.xlsx)Latest updates. In Maryland, cooling degree days stood at 6.0 degrees Fahrenheit on 23 September 2025, versus 3.0 on 22 September 2025.
Sample. There are 16,337 records in the daily time series displayed in the plot above. The time range covered by the series goes from January 1981 to September 2025.
History. Here’s a quick look at a few summary statistics calculated on the full sample: degree days reached a minimum of 0.0 degrees Fahrenheit on 1 January 1981; they hit a peak of 25.0 on 22 July 2011; they had a mean of 3.5.
Latest values
| Date | Value - Degrees Fahrenheit |
|---|---|
| 2025-09-21 | 3.0 |
| 2025-09-22 | 3.0 |
| 2025-09-23 | 6.0 |
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Series Metadata
| Field | Value |
|---|---|
| Description | Cooling degree days |
| Country | Maryland (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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