Cooling and heating: Cities and FUAs … degree 1981 2010 period in Portland

Portland: Cooling and heating: Cities and FUAs … degree 1981 2010 period was -245.06 % change on previous year in 2025. ◆ Volatile

Latest (2025)
-245.06 % change on previous year
Change on year
down 788.5%
Rank
1105th
of 1306 regions
All-time high
757.39 % change on previous year
in 2017
All-time low
-512.36 % change on previous year
in 1957
Years of data
70
1951–2025

Cooling and heating degree days - Cities and FUAs — Change in cooling in Portland, 1951–2025

-50005001.0k195119882025

Source: Statizoid (derived). Measured in % change on previous year.

Analysis

In 2025, cooling and heating degree days - cities and fuas — change in cooling in Portland stood at -245.06 % change on previous year.

The figure is down 788.5% on the previous year and down 271.4% over ten years.

Over the whole period, cooling and heating degree days - cities and fuas — change in cooling in Portland peaked at 757.39 % change on previous year in 2017 and was at its lowest, -512.36 % change on previous year, in 1957.

Portland ranks 1105th of 1306 regions on this measure, in the bottom quarter.

The series is highly variable year to year, so single readings are best treated with caution.

Cooling and heating: Cities and FUAs … degree 1981 2010 period in Portland, year by year

Annual values for Cooling and heating degree days - Cities and FUAs — Change in cooling degree days from 1981–2010 period to 2020–24 period, annual growth rate in Portland, 1951 to 2025.
Year % change on previous year Change
1951 90.39 % change on previous year —
1953 -221.3 % change on previous year -344.8%
1954 -182.72 % change on previous year -17.4%
1955 52.38 % change on previous year -128.7%
1956 123.84 % change on previous year +136.4%
1957 -512.36 % change on previous year -513.7%
1958 262.31 % change on previous year -151.2%
1959 -150.93 % change on previous year -157.5%
1960 64.99 % change on previous year -143.1%
1961 447.86 % change on previous year +589.1%
1962 -203.07 % change on previous year -145.3%
1963 -13.35 % change on previous year -93.4%
1964 -44.2 % change on previous year +231.2%
1965 62.59 % change on previous year -241.6%
1966 -60.33 % change on previous year -196.4%
1967 223.27 % change on previous year -470.1%
1968 -180.87 % change on previous year -181.0%
1969 22.88 % change on previous year -112.7%
1970 87.43 % change on previous year +282.0%
1971 -226.26 % change on previous year -358.8%
1972 260.51 % change on previous year -215.1%
1973 -177.02 % change on previous year -168.0%
1974 157.33 % change on previous year -188.9%
1975 -419.46 % change on previous year -366.6%
1976 -72.83 % change on previous year -82.6%
1977 77.22 % change on previous year -206.0%
1978 -149.15 % change on previous year -293.2%
1979 44.51 % change on previous year -129.8%
1980 -172.03 % change on previous year -486.5%
1981 117.15 % change on previous year -168.1%
1982 -92.55 % change on previous year -179.0%
1984 52.63 % change on previous year -156.9%
1985 136.51 % change on previous year +159.4%
1986 97.16 % change on previous year -28.8%
1987 212.37 % change on previous year +118.6%
1988 -53.47 % change on previous year -125.2%
1989 -252.06 % change on previous year +371.4%
1990 190.49 % change on previous year -175.6%
1991 -41.07 % change on previous year -121.6%
1992 186.88 % change on previous year -555.0%
1993 -143.85 % change on previous year -177.0%
1994 74.73 % change on previous year -152.0%
1995 -99.54 % change on previous year -233.2%
1996 257.6 % change on previous year -358.8%
1997 -247.32 % change on previous year -196.0%
1998 140.53 % change on previous year -156.8%
1999 -306.89 % change on previous year -318.4%
2000 -75.83 % change on previous year -75.3%
2001 14.7 % change on previous year -119.4%
2002 96.64 % change on previous year +557.5%
2004 -103.22 % change on previous year -206.8%
2006 276.25 % change on previous year -367.6%
2007 -180.77 % change on previous year -165.4%
2008 139.22 % change on previous year -177.0%
2009 233.16 % change on previous year +67.5%
2010 -199.39 % change on previous year -185.5%
2011 5.96 % change on previous year -103.0%
2012 97.16 % change on previous year +1530.2%
2014 248.84 % change on previous year +156.1%
2015 142.96 % change on previous year -42.5%
2016 -86.39 % change on previous year -160.4%
2017 757.39 % change on previous year -976.8%
2018 -15.61 % change on previous year -102.1%
2019 -135.33 % change on previous year +767.0%
2020 221.63 % change on previous year -263.8%
2021 191.81 % change on previous year -13.5%
2022 16.86 % change on previous year -91.2%
2023 -26.24 % change on previous year -255.6%
2024 -27.58 % change on previous year +5.1%
2025 -245.06 % change on previous year +788.5%

Averages by decade

DecadeAverage LowestHighest Years
1950s -67.3 % change on previous year -512.36 % change on previous year 262.31 % change on previous year 8
1960s 31.98 % change on previous year -203.07 % change on previous year 447.86 % change on previous year 10
1970s -41.77 % change on previous year -419.46 % change on previous year 260.51 % change on previous year 10
1980s 5.08 % change on previous year -252.06 % change on previous year 212.37 % change on previous year 9
1990s 1.16 % change on previous year -306.89 % change on previous year 257.6 % change on previous year 10
2000s 50.02 % change on previous year -180.77 % change on previous year 276.25 % change on previous year 8
2010s 90.62 % change on previous year -199.39 % change on previous year 757.39 % change on previous year 9
2020s 21.9 % change on previous year -245.06 % change on previous year 221.63 % change on previous year 6

More reference data data for Portland

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Frequently asked questions

What is cooling and heating degree days - cities and fuas — change in cooling in Portland?
Cooling and heating degree days - cities and fuas — change in cooling in Portland was -245.06 % change on previous year in 2025, according to Statizoid (derived).
What is the highest cooling and heating degree days - cities and fuas — change in cooling recorded in Portland?
The highest recorded value was 757.39 % change on previous year in 2017.
What is the lowest cooling and heating degree days - cities and fuas — change in cooling recorded in Portland?
The lowest recorded value was -512.36 % change on previous year in 1957.
How does Portland rank for cooling and heating degree days - cities and fuas — change in cooling?
Portland ranks 1105th out of 1306 regions with data for 2025.
Is cooling and heating degree days - cities and fuas — change in cooling rising or falling in Portland?
Over the last ten years it is down 271.4%. The long-run trend across the full record is volatile.
Where does this Portland data come from?
The figures come from Statizoid (derived), published as part of Cooling and heating degree days - Cities and FUAs — Change in cooling degree days from 1981–2010 period to 2020–24 period, annual growth rate. Statizoid updates them automatically from the source API.

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Cooling and heating degree days - Cities and FUAs — Change in cooling in Portland. Statizoid, drawing on Statizoid (derived). Retrieved 14 October 2026, from https://reference.statizoid.com/stat/cooling-and-heating-degree-days-cities-and-fuas-change-in-cooling-degree-days-from-1981-2/portland/

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How this figure is calculated

The year-on-year percentage change in Cooling and heating degree days - Cities and FUAs — Change in cooling degree days from 1981–2010 period to 2020–24 period. Computed from consecutive annual observations; years either side of a gap are skipped rather than bridged.

Computed from

Statizoid computes this series; the underlying measurements belong to the publishers named above. The arithmetic is applied to every country and year where both inputs report, and nothing is estimated unless the page says so.

About this data

Indicator
Cooling and heating degree days - Cities and FUAs — Change in cooling degree days from 1981–2010 period to 2020–24 period, annual growth rate
Unit
% change on previous year
Source
Statizoid (derived)
Licence
Derived by Statizoid from the sources named on the page
Coverage
1,324 places, 93,596 data points, 1951–2025
Last refreshed

The year-on-year percentage change in Cooling and heating degree days - Cities and FUAs — Change in cooling degree days from 1981–2010 period to 2020–24 period. Computed from consecutive annual observations; years either side of a gap are skipped rather than bridged.