Heating degree days (F) - Montana (US) - NOAA - Daily
This series is part of the dataset: Heating and cooling degree days (NOAA)
Download Full Dataset (.xlsx)Latest updates. In Montana, heating degree days stood at 10.0 degrees Fahrenheit on 23 September 2025, compared to 11.0 on the previous day.
Sample. There are 16,337 data points in the daily series displayed in the graph above. The time span covered by the series extends from January 1981 to September 2025.
History. Take a look at some descriptive statistics calculated on the entire sample: degree days registered a minimum of 0.0 degrees Fahrenheit on 26 June 1981; they reached their highest level of 89.0 on 24 December 1983; they had a mean of 21.4.
Latest values
| Date | Value - Degrees Fahrenheit |
|---|---|
| 2025-09-21 | 5.0 |
| 2025-09-22 | 11.0 |
| 2025-09-23 | 10.0 |
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Series Metadata
| Field | Value |
|---|---|
| Description | Heating degree days |
| Country | Montana (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.