Cooling and heating degree days - Cities and FUAs (heating Cities) in Portland
Portland: Cooling and heating degree days - Cities and FUAs (heating Cities) was 1,928 Degree days in 2025. ▼ Falling
Cooling and heating degree days - Cities and FUAs in Portland, 1950–2025
Source: Organisation for Economic Co-operation and Development. Measured in Degree days.
Analysis
Portland recorded 1,928 Degree days for cooling and heating degree days - cities and fuas in 2025.
That represents a change of down 13.5% on the previous year and up 7.6% over ten years.
Over the whole period, cooling and heating degree days - cities and fuas in Portland peaked at 2,774 Degree days in 1955 and was at its lowest, 1,791 Degree days, in 2015.
Portland ranks 431st of 1314 regions on this measure, in the middle of the range.
The long-run direction has been consistently falling across the 76 years of available data.
Cooling and heating degree days - Cities and FUAs (heating Cities) in Portland, year by year
| Year | Degree days | Change |
|---|---|---|
| 1950 | 2,631 Degree days | — |
| 1951 | 2,457 Degree days | -6.6% |
| 1952 | 2,406 Degree days | -2.1% |
| 1953 | 2,153 Degree days | -10.5% |
| 1954 | 2,361 Degree days | +9.7% |
| 1955 | 2,774 Degree days | +17.5% |
| 1956 | 2,514 Degree days | -9.4% |
| 1957 | 2,370 Degree days | -5.8% |
| 1958 | 1,924 Degree days | -18.8% |
| 1959 | 2,348 Degree days | +22.1% |
| 1960 | 2,480 Degree days | +5.6% |
| 1961 | 2,301 Degree days | -7.2% |
| 1962 | 2,321 Degree days | +0.9% |
| 1963 | 2,312 Degree days | -0.4% |
| 1964 | 2,564 Degree days | +10.9% |
| 1965 | 2,222 Degree days | -13.4% |
| 1966 | 2,246 Degree days | +1.1% |
| 1967 | 2,292 Degree days | +2.1% |
| 1968 | 2,322 Degree days | +1.3% |
| 1969 | 2,617 Degree days | +12.7% |
| 1970 | 2,367 Degree days | -9.6% |
| 1971 | 2,630 Degree days | +11.1% |
| 1972 | 2,523 Degree days | -4.1% |
| 1973 | 2,328 Degree days | -7.7% |
| 1974 | 2,292 Degree days | -1.6% |
| 1975 | 2,480 Degree days | +8.2% |
| 1976 | 2,302 Degree days | -7.1% |
| 1977 | 2,325 Degree days | +1.0% |
| 1978 | 2,332 Degree days | +0.3% |
| 1979 | 2,324 Degree days | -0.3% |
| 1980 | 2,336 Degree days | +0.5% |
| 1981 | 2,190 Degree days | -6.2% |
| 1982 | 2,511 Degree days | +14.6% |
| 1983 | 2,213 Degree days | -11.9% |
| 1984 | 2,501 Degree days | +13.0% |
| 1985 | 2,705 Degree days | +8.2% |
| 1986 | 2,089 Degree days | -22.8% |
| 1987 | 2,022 Degree days | -3.2% |
| 1988 | 2,216 Degree days | +9.6% |
| 1989 | 2,299 Degree days | +3.8% |
| 1990 | 2,187 Degree days | -4.9% |
| 1991 | 2,194 Degree days | +0.3% |
| 1992 | 1,878 Degree days | -14.4% |
| 1993 | 2,365 Degree days | +26.0% |
| 1994 | 2,185 Degree days | -7.6% |
| 1995 | 2,007 Degree days | -8.1% |
| 1996 | 2,328 Degree days | +16.0% |
| 1997 | 2,146 Degree days | -7.8% |
| 1998 | 2,153 Degree days | +0.3% |
| 1999 | 2,312 Degree days | +7.4% |
| 2000 | 2,346 Degree days | +1.5% |
| 2001 | 2,300 Degree days | -2.0% |
| 2002 | 2,257 Degree days | -1.8% |
| 2003 | 2,126 Degree days | -5.8% |
| 2004 | 2,042 Degree days | -3.9% |
| 2005 | 2,139 Degree days | +4.7% |
| 2006 | 2,206 Degree days | +3.1% |
| 2007 | 2,280 Degree days | +3.4% |
| 2008 | 2,500 Degree days | +9.6% |
| 2009 | 2,397 Degree days | -4.1% |
| 2010 | 2,179 Degree days | -9.1% |
| 2011 | 2,500 Degree days | +14.7% |
| 2012 | 2,284 Degree days | -8.6% |
| 2013 | 2,298 Degree days | +0.6% |
| 2014 | 2,024 Degree days | -12.0% |
| 2015 | 1,791 Degree days | -11.5% |
| 2016 | 1,971 Degree days | +10.0% |
| 2017 | 2,374 Degree days | +20.5% |
| 2018 | 2,037 Degree days | -14.2% |
| 2019 | 2,241 Degree days | +10.0% |
| 2020 | 2,066 Degree days | -7.8% |
| 2021 | 2,119 Degree days | +2.6% |
| 2022 | 2,267 Degree days | +7.0% |
| 2023 | 2,292 Degree days | +1.1% |
| 2024 | 2,229 Degree days | -2.8% |
| 2025 | 1,928 Degree days | -13.5% |
Averages by decade
| Decade | Average | Lowest | Highest | Years |
|---|---|---|---|---|
| 1950s | 2,394 Degree days | 1,924 Degree days | 2,774 Degree days | 10 |
| 1960s | 2,368 Degree days | 2,222 Degree days | 2,617 Degree days | 10 |
| 1970s | 2,390 Degree days | 2,292 Degree days | 2,630 Degree days | 10 |
| 1980s | 2,308 Degree days | 2,022 Degree days | 2,705 Degree days | 10 |
| 1990s | 2,176 Degree days | 1,878 Degree days | 2,365 Degree days | 10 |
| 2000s | 2,259 Degree days | 2,042 Degree days | 2,500 Degree days | 10 |
| 2010s | 2,170 Degree days | 1,791 Degree days | 2,500 Degree days | 10 |
| 2020s | 2,150 Degree days | 1,928 Degree days | 2,292 Degree days | 6 |
More reference data data for Portland
- Cooling and heating degree days - Cities and FUAs — Cooling degree 48.02 Degree days (2025)
- Cooling and heating degree days - Cities and FUAs — Change in cooling -75.54 Degree days (2025)
- Cooling and heating degree days - Cities and FUAs — Change in heating -314.4 Degree days (2025)
- Cooling and heating degree days - Cities and FUAs — Change in heating -127.56 % change on previous year (2024)
- Cooling and heating degree days - Cities and FUAs, annual growth rate -13.49 % change on previous year (2025)
- Cooling and heating degree days - Cities and FUAs — Change in cooling -245.06 % change on previous year (2025)
- Cooling and heating degree days - Cities and FUAs — Cooling degree -72.66 % change on previous year (2025)
- Precipitation - Cities and FUAs — Extreme precipitation days 26.64 Days per year (2024)
- Precipitation - Cities and FUAs — Change in extreme precipitation 5.24 Days per year (2024)
- Dependency ratio - Cities and FUAs 23.6 Percentage of population aged 15-64 years (2024)
Frequently asked questions
- What is cooling and heating degree days - cities and fuas in Portland?
- Cooling and heating degree days - cities and fuas in Portland was 1,928 Degree days in 2025, according to Organisation for Economic Co-operation and Development.
- What is the highest cooling and heating degree days - cities and fuas recorded in Portland?
- The highest recorded value was 2,774 Degree days in 1955.
- What is the lowest cooling and heating degree days - cities and fuas recorded in Portland?
- The lowest recorded value was 1,791 Degree days in 2015.
- How does Portland rank for cooling and heating degree days - cities and fuas?
- Portland ranks 431st out of 1314 regions with data for 2025.
- Is cooling and heating degree days - cities and fuas rising or falling in Portland?
- Over the last ten years it is up 7.6%. The long-run trend across the full record is falling.
- Where does this Portland data come from?
- The figures come from Organisation for Economic Co-operation and Development, published as part of Cooling and heating degree days - Cities and FUAs. Statizoid updates them automatically from the source API.
Download this data
CSV · JSON — 76 observations, free to reuse under OECD Terms and Conditions (attribution required).
About this data
This dataset provides indicators of Cooling and Heating Degree Days (CDDs and HDDs) for FUAs and cities. CDDs and HDDs are measurements used to estimate energy usage based on outdoor temperature. CDD measures the demand for cooling, while HDD measures the demand for heating, both calculated relative to a baseline temperature. Data sources and methodology The indicators use 0.1-degree resolution grids from the ERA5-Land dataset. ERA5-Land is used as it provides harmonised, globally consistent coverage at fine spatial resolution (0.1 degree), enabling the production of comparable subnational indicators also where national meteorological data are not available at the required scale. Annual CDDs are the sum over a year of the differences between the daily mean outdoor air temperature and the threshold temperature when the outdoor temperature is above the threshold temperature. HDDs are the sum over a year of the differences between the threshold temperature and the daily mean outdoor air temperature when the outdoor temperature is below the threshold temperature. Threshold temperatures are set to 22°C for CDDs and 15°C for HDDs. These estimates may differ from official subnational climate statistics due to differences in methodological approaches, such as the use of reanalysis based top down modelling versus in situ observations, along with variations in input data sources, spatial resolution, and the models and algorithms used to generate temperature estimates. Defining FUAs and cities The OECD, in cooperation with the EU, has developed a harmonised definition of functional urban areas (FUAs) to capture the economic and functional reach of cities based on daily commuting patterns (OECD, 2012). FUAs consist of: A city – defined by urban centres in the degree of urbanisation, adapted to the closest local administrative units to define a city. A commuting zone – including all local areas where at least 15% of employed residents work in the city. The delineation process includes: Assigning municipalities surrounded by a single FUA to that FUA. Excluding non-contiguous municipalities. The correspondence table between SAUs and FUAs/cities is available in parquet and csv format. The definition identifies 1 272 FUAs and 1 269 cities in all OECD member countries except Costa Rica and three accession countries. Cite this dataset OECD Regions, cities and local areas database (Cooling and heating degree days - Cities and FUAs), http://oe.cd/geostats Further information OECD Local Data Portal OECD Regions and Cities at a Glance For questions and/or comments, please email CitiesStat@oecd.org