Northwest Natural Holding (NWN) seasonality heatmap
Returns across monthly, quarterly, and yearly periods. Cell color encodes signed magnitude; the scale auto-fits each table.
| Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026 | +0.7% | +13.9% | +1.3% | -0.4% | -8.5% | +1.2% | +1.2% | — | — | — | — | — |
| 2025 | +2.1% | +2.4% | +4.5% | +2.0% | -5.0% | -3.0% | +1.7% | +4.0% | +8.2% | +2.4% | +8.6% | -5.5% |
| 2024 | -4.2% | -0.3% | +1.3% | +3.8% | -1.9% | -3.5% | +12.1% | +0.6% | +1.5% | -3.6% | +12.7% | -9.7% |
| 2023 | +6.4% | -3.6% | -1.6% | -0.2% | -9.1% | +0.8% | +0.9% | -8.6% | -2.8% | -2.5% | -0.2% | +6.3% |
| 2022 | -1.9% | +9.9% | -0.6% | -6.6% | +13.5% | -2.2% | +2.0% | -11.3% | -8.9% | +12.0% | +4.2% | -5.0% |
| 2021 | +2.6% | +2.7% | +12.4% | +0.9% | -1.9% | -0.7% | +0.5% | -1.6% | -10.6% | -0.9% | -4.4% | +13.1% |
| 2020 | +0.2% | -10.4% | -6.1% | +6.2% | -1.5% | -13.0% | -3.3% | -4.5% | -11.2% | -1.0% | +7.8% | -4.0% |
| 2019 | +4.3% | +2.6% | +2.2% | +2.6% | +2.9% | +1.0% | +3.4% | -0.1% | -0.0% | -2.1% | -0.9% | +7.2% |
| 2018 | -3.1% | -9.1% | +10.5% | +7.1% | -2.4% | +6.7% | +2.9% | -0.4% | +3.1% | -2.5% | +2.4% | -8.8% |
| 2017 | -0.7% | +2.0% | -1.7% | +1.6% | +2.8% | -2.3% | +6.2% | +5.1% | -2.9% | +3.8% | +4.2% | -13.7% |
| 2016 | +3.6% | -4.0% | +8.0% | -3.4% | +6.5% | +18.0% | +0.9% | -8.0% | +0.7% | -1.4% | -2.6% | +4.4% |
| 2015 | +0.9% | -5.3% | +1.5% | -1.7% | -4.3% | -5.6% | +3.7% | +1.6% | +4.2% | +5.2% | +2.1% | +3.7% |
| 2014 | -1.8% | +3.1% | +2.7% | +1.6% | +2.3% | +4.1% | -7.4% | +5.2% | -7.1% | +12.2% | -0.9% | +7.3% |
| 2013 | +3.8% | +0.3% | -3.8% | +2.5% | -3.9% | -0.6% | +4.5% | -6.6% | +2.3% | +4.5% | -2.1% | +0.7% |
| 2012 | +0.1% | -3.7% | -0.8% | +1.7% | +1.4% | +2.7% | +3.2% | +1.0% | +0.2% | -5.5% | -5.8% | +0.8% |
| 2011 | -3.2% | +5.5% | -1.8% | +1.2% | -2.3% | -0.1% | -0.2% | +1.4% | -2.5% | +7.0% | +0.7% | +1.8% |
| 2010 | -2.8% | +1.4% | +5.9% | +2.6% | -7.2% | -0.9% | +9.7% | -4.2% | +4.4% | +4.8% | -1.0% | -4.8% |
| 2009 | -2.0% | -4.6% | +6.0% | -4.9% | +3.7% | +4.5% | +1.6% | -5.7% | -1.1% | +1.3% | +2.6% | +5.1% |
| 2008 | -2.0% | -11.2% | +3.3% | +4.2% | +1.6% | +1.5% | -1.3% | +7.7% | +6.7% | -1.3% | -1.8% | -11.4% |
| 2007 | -3.3% | +8.8% | +3.1% | +12.1% | -1.9% | -7.3% | -9.1% | +11.5% | -1.6% | +6.3% | -0.4% | +1.5% |
| 2006 | +5.2% | -3.8% | +3.6% | -1.7% | +1.0% | +6.1% | +3.5% | +0.7% | +2.7% | +6.2% | -0.3% | +2.9% |
| 2005 | +1.6% | +7.3% | -0.7% | -0.9% | +2.0% | +5.6% | +1.8% | -4.7% | +1.2% | -6.1% | -0.7% | -0.6% |
| 2004 | +1.2% | +3.8% | -2.2% | -5.0% | -0.9% | +4.7% | -2.6% | +5.0% | +2.9% | +0.9% | +6.8% | -0.4% |
| 2003 | -2.7% | -5.9% | +2.4% | +4.2% | +7.9% | -2.1% | +5.6% | +0.1% | +1.8% | +1.1% | +5.2% | +0.8% |
| 2002 | +3.8% | +0.7% | +6.4% | +2.5% | +3.0% | -1.7% | -1.1% | -0.2% | +4.7% | +3.2% | -14.6% | +5.8% |
| 2001 | -8.3% | +1.9% | -1.8% | -6.3% | +7.7% | +4.1% | -2.0% | +3.7% | -6.4% | +3.5% | +2.2% | +4.4% |
| 2000 | -4.9% | -4.9% | +0.0% | +14.6% | -1.1% | +2.9% | +4.8% | -0.6% | -1.1% | +4.5% | +2.4% | +10.5% |
| 1999 | -8.2% | +4.1% | -10.6% | +4.7% | +6.3% | +0.6% | +10.5% | -5.2% | +3.3% | +1.4% | -3.0% | -12.8% |
| 1998 | -13.1% | +5.8% | -0.2% | -3.0% | +1.9% | +1.7% | -5.0% | -7.1% | +13.3% | +2.0% | +1.8% | -8.8% |
| 1997 | +5.4% | -3.0% | +1.1% | +0.1% | +0.5% | +7.5% | +0.4% | -3.8% | +2.9% | -3.1% | +13.7% | +10.7% |
| 1996 | +2.0% | -0.8% | -3.7% | +3.7% | +5.4% | +2.2% | +0.1% | +2.6% | -2.8% | +11.6% | -1.5% | -4.1% |
| 1995 | +4.6% | -0.4% | +3.2% | +0.5% | -4.3% | +5.4% | +2.4% | -1.5% | +0.0% | +4.6% | +4.7% | -1.4% |
| 1994 | +6.4% | -0.8% | -5.6% | +1.5% | -8.2% | -3.3% | +0.6% | +2.6% | +4.9% | -4.9% | -4.0% | +2.5% |
| 1993 | +6.0% | +7.7% | -3.6% | +2.9% | +8.5% | +0.0% | +7.8% | +0.0% | +2.4% | -1.3% | -3.4% | -2.1% |
| 1992 | +7.6% | +0.0% | -3.3% | -6.9% | +10.2% | +1.7% | +4.6% | +1.6% | +1.6% | -5.6% | -4.1% | -1.1% |
| 1991 | +1.9% | +4.4% | +1.0% | +4.7% | +1.2% | -7.9% | +9.4% | +2.6% | +2.7% | +9.0% | -5.1% | -5.3% |
| 1990 | — | — | — | +0.0% | +0.6% | +8.7% | -8.6% | -2.9% | +3.6% | +4.4% | +6.7% | -1.8% |
| Avg | +0.2% | +0.5% | +0.9% | +1.3% | +0.7% | +1.0% | +1.8% | -0.6% | +0.6% | +2.0% | +0.9% | -0.3% |
| Median | +0.8% | +0.5% | +1.0% | +1.6% | +1.0% | +1.0% | +1.8% | -0.0% | +1.5% | +1.7% | -0.3% | +0.1% |
| Last 5Y Avg | +0.6% | +4.5% | +1.0% | -0.3% | -2.2% | -1.3% | +3.4% | -3.4% | -2.5% | +1.5% | +4.2% | -0.2% |
| Std Dev (σ) | 4.6% | 5.6% | 4.6% | 4.6% | 5.3% | 5.4% | 4.9% | 4.8% | 5.0% | 4.9% | 5.4% | 6.7% |
| Consistency (μ/σ) | 0.05 | 0.08 | 0.19 | 0.29 | 0.13 | 0.19 | 0.36 | -0.11 | 0.11 | 0.40 | 0.17 | -0.05 |
| Win Rate (%) | 58% | 53% | 53% | 65% | 57% | 57% | 72% | 47% | 61% | 61% | 47% | 50% |
| Winning / Losing Months | ▲21▼15 | ▲19▼17 | ▲19▼17 | ▲24▼13 | ▲21▼16 | ▲21▼16 | ▲26▼10 | ▲17▼19 | ▲22▼14 | ▲22▼14 | ▲17▼19 | ▲18▼18 |
| Longest Win / Loss Streak | ▲7▼5 | ▲2▼4 | ▲5▼4 | ▲5▼3 | ▲4▼4 | ▲7▼3 | ▲7▼2 | ▲3▼6 | ▲5▼5 | ▲7▼4 | ▲2▼4 | ▲6▼4 |
| Best | +7.6%in January 1992 | +13.9%in February 2026 | +12.4%in March 2021 | +14.6%in April 2000 | +13.5%in May 2022 | +18.0%in June 2016 | +12.1%in July 2024 | +11.5%in August 2007 | +13.3%in September 1998 | +12.2%in October 2014 | +13.7%in November 1997 | +13.1%in December 2021 |
| Worst | -13.1%in January 1998 | -11.2%in February 2008 | -10.6%in March 1999 | -6.9%in April 1992 | -9.1%in May 2023 | -13.0%in June 2020 | -9.1%in July 2007 | -11.3%in August 2022 | -11.2%in September 2020 | -6.1%in October 2005 | -14.6%in November 2002 | -13.7%in December 2017 |
−14.6%+18.0%
2026
Jan+0.7%
Feb+13.9%
Mar+1.3%
Apr-0.4%
May-8.5%
Jun+1.2%
Jul+1.2%
Aug—
Sep—
Oct—
Nov—
Dec—
2025
Jan+2.1%
Feb+2.4%
Mar+4.5%
Apr+2.0%
May-5.0%
Jun-3.0%
Jul+1.7%
Aug+4.0%
Sep+8.2%
Oct+2.4%
Nov+8.6%
Dec-5.5%
2024
Jan-4.2%
Feb-0.3%
Mar+1.3%
Apr+3.8%
May-1.9%
Jun-3.5%
Jul+12.1%
Aug+0.6%
Sep+1.5%
Oct-3.6%
Nov+12.7%
Dec-9.7%
2023
Jan+6.4%
Feb-3.6%
Mar-1.6%
Apr-0.2%
May-9.1%
Jun+0.8%
Jul+0.9%
Aug-8.6%
Sep-2.8%
Oct-2.5%
Nov-0.2%
Dec+6.3%
2022
Jan-1.9%
Feb+9.9%
Mar-0.6%
Apr-6.6%
May+13.5%
Jun-2.2%
Jul+2.0%
Aug-11.3%
Sep-8.9%
Oct+12.0%
Nov+4.2%
Dec-5.0%
2021
Jan+2.6%
Feb+2.7%
Mar+12.4%
Apr+0.9%
May-1.9%
Jun-0.7%
Jul+0.5%
Aug-1.6%
Sep-10.6%
Oct-0.9%
Nov-4.4%
Dec+13.1%
2020
Jan+0.2%
Feb-10.4%
Mar-6.1%
Apr+6.2%
May-1.5%
Jun-13.0%
Jul-3.3%
Aug-4.5%
Sep-11.2%
Oct-1.0%
Nov+7.8%
Dec-4.0%
2019
Jan+4.3%
Feb+2.6%
Mar+2.2%
Apr+2.6%
May+2.9%
Jun+1.0%
Jul+3.4%
Aug-0.1%
Sep-0.0%
Oct-2.1%
Nov-0.9%
Dec+7.2%
2018
Jan-3.1%
Feb-9.1%
Mar+10.5%
Apr+7.1%
May-2.4%
Jun+6.7%
Jul+2.9%
Aug-0.4%
Sep+3.1%
Oct-2.5%
Nov+2.4%
Dec-8.8%
2017
Jan-0.7%
Feb+2.0%
Mar-1.7%
Apr+1.6%
May+2.8%
Jun-2.3%
Jul+6.2%
Aug+5.1%
Sep-2.9%
Oct+3.8%
Nov+4.2%
Dec-13.7%
2016
Jan+3.6%
Feb-4.0%
Mar+8.0%
Apr-3.4%
May+6.5%
Jun+18.0%
Jul+0.9%
Aug-8.0%
Sep+0.7%
Oct-1.4%
Nov-2.6%
Dec+4.4%
2015
Jan+0.9%
Feb-5.3%
Mar+1.5%
Apr-1.7%
May-4.3%
Jun-5.6%
Jul+3.7%
Aug+1.6%
Sep+4.2%
Oct+5.2%
Nov+2.1%
Dec+3.7%
2014
Jan-1.8%
Feb+3.1%
Mar+2.7%
Apr+1.6%
May+2.3%
Jun+4.1%
Jul-7.4%
Aug+5.2%
Sep-7.1%
Oct+12.2%
Nov-0.9%
Dec+7.3%
2013
Jan+3.8%
Feb+0.3%
Mar-3.8%
Apr+2.5%
May-3.9%
Jun-0.6%
Jul+4.5%
Aug-6.6%
Sep+2.3%
Oct+4.5%
Nov-2.1%
Dec+0.7%
2012
Jan+0.1%
Feb-3.7%
Mar-0.8%
Apr+1.7%
May+1.4%
Jun+2.7%
Jul+3.2%
Aug+1.0%
Sep+0.2%
Oct-5.5%
Nov-5.8%
Dec+0.8%
2011
Jan-3.2%
Feb+5.5%
Mar-1.8%
Apr+1.2%
May-2.3%
Jun-0.1%
Jul-0.2%
Aug+1.4%
Sep-2.5%
Oct+7.0%
Nov+0.7%
Dec+1.8%
2010
Jan-2.8%
Feb+1.4%
Mar+5.9%
Apr+2.6%
May-7.2%
Jun-0.9%
Jul+9.7%
Aug-4.2%
Sep+4.4%
Oct+4.8%
Nov-1.0%
Dec-4.8%
2009
Jan-2.0%
Feb-4.6%
Mar+6.0%
Apr-4.9%
May+3.7%
Jun+4.5%
Jul+1.6%
Aug-5.7%
Sep-1.1%
Oct+1.3%
Nov+2.6%
Dec+5.1%
2008
Jan-2.0%
Feb-11.2%
Mar+3.3%
Apr+4.2%
May+1.6%
Jun+1.5%
Jul-1.3%
Aug+7.7%
Sep+6.7%
Oct-1.3%
Nov-1.8%
Dec-11.4%
2007
Jan-3.3%
Feb+8.8%
Mar+3.1%
Apr+12.1%
May-1.9%
Jun-7.3%
Jul-9.1%
Aug+11.5%
Sep-1.6%
Oct+6.3%
Nov-0.4%
Dec+1.5%
2006
Jan+5.2%
Feb-3.8%
Mar+3.6%
Apr-1.7%
May+1.0%
Jun+6.1%
Jul+3.5%
Aug+0.7%
Sep+2.7%
Oct+6.2%
Nov-0.3%
Dec+2.9%
2005
Jan+1.6%
Feb+7.3%
Mar-0.7%
Apr-0.9%
May+2.0%
Jun+5.6%
Jul+1.8%
Aug-4.7%
Sep+1.2%
Oct-6.1%
Nov-0.7%
Dec-0.6%
2004
Jan+1.2%
Feb+3.8%
Mar-2.2%
Apr-5.0%
May-0.9%
Jun+4.7%
Jul-2.6%
Aug+5.0%
Sep+2.9%
Oct+0.9%
Nov+6.8%
Dec-0.4%
2003
Jan-2.7%
Feb-5.9%
Mar+2.4%
Apr+4.2%
May+7.9%
Jun-2.1%
Jul+5.6%
Aug+0.1%
Sep+1.8%
Oct+1.1%
Nov+5.2%
Dec+0.8%
2002
Jan+3.8%
Feb+0.7%
Mar+6.4%
Apr+2.5%
May+3.0%
Jun-1.7%
Jul-1.1%
Aug-0.2%
Sep+4.7%
Oct+3.2%
Nov-14.6%
Dec+5.8%
2001
Jan-8.3%
Feb+1.9%
Mar-1.8%
Apr-6.3%
May+7.7%
Jun+4.1%
Jul-2.0%
Aug+3.7%
Sep-6.4%
Oct+3.5%
Nov+2.2%
Dec+4.4%
2000
Jan-4.9%
Feb-4.9%
Mar+0.0%
Apr+14.6%
May-1.1%
Jun+2.9%
Jul+4.8%
Aug-0.6%
Sep-1.1%
Oct+4.5%
Nov+2.4%
Dec+10.5%
1999
Jan-8.2%
Feb+4.1%
Mar-10.6%
Apr+4.7%
May+6.3%
Jun+0.6%
Jul+10.5%
Aug-5.2%
Sep+3.3%
Oct+1.4%
Nov-3.0%
Dec-12.8%
1998
Jan-13.1%
Feb+5.8%
Mar-0.2%
Apr-3.0%
May+1.9%
Jun+1.7%
Jul-5.0%
Aug-7.1%
Sep+13.3%
Oct+2.0%
Nov+1.8%
Dec-8.8%
1997
Jan+5.4%
Feb-3.0%
Mar+1.1%
Apr+0.1%
May+0.5%
Jun+7.5%
Jul+0.4%
Aug-3.8%
Sep+2.9%
Oct-3.1%
Nov+13.7%
Dec+10.7%
1996
Jan+2.0%
Feb-0.8%
Mar-3.7%
Apr+3.7%
May+5.4%
Jun+2.2%
Jul+0.1%
Aug+2.6%
Sep-2.8%
Oct+11.6%
Nov-1.5%
Dec-4.1%
1995
Jan+4.6%
Feb-0.4%
Mar+3.2%
Apr+0.5%
May-4.3%
Jun+5.4%
Jul+2.4%
Aug-1.5%
Sep+0.0%
Oct+4.6%
Nov+4.7%
Dec-1.4%
1994
Jan+6.4%
Feb-0.8%
Mar-5.6%
Apr+1.5%
May-8.2%
Jun-3.3%
Jul+0.6%
Aug+2.6%
Sep+4.9%
Oct-4.9%
Nov-4.0%
Dec+2.5%
1993
Jan+6.0%
Feb+7.7%
Mar-3.6%
Apr+2.9%
May+8.5%
Jun+0.0%
Jul+7.8%
Aug+0.0%
Sep+2.4%
Oct-1.3%
Nov-3.4%
Dec-2.1%
1992
Jan+7.6%
Feb+0.0%
Mar-3.3%
Apr-6.9%
May+10.2%
Jun+1.7%
Jul+4.6%
Aug+1.6%
Sep+1.6%
Oct-5.6%
Nov-4.1%
Dec-1.1%
1991
Jan+1.9%
Feb+4.4%
Mar+1.0%
Apr+4.7%
May+1.2%
Jun-7.9%
Jul+9.4%
Aug+2.6%
Sep+2.7%
Oct+9.0%
Nov-5.1%
Dec-5.3%
1990
Jan—
Feb—
Mar—
Apr+0.0%
May+0.6%
Jun+8.7%
Jul-8.6%
Aug-2.9%
Sep+3.6%
Oct+4.4%
Nov+6.7%
Dec-1.8%
Avg
Jan+0.2%
Feb+0.5%
Mar+0.9%
Apr+1.3%
May+0.7%
Jun+1.0%
Jul+1.8%
Aug-0.6%
Sep+0.6%
Oct+2.0%
Nov+0.9%
Dec-0.3%
Median
Jan+0.8%
Feb+0.5%
Mar+1.0%
Apr+1.6%
May+1.0%
Jun+1.0%
Jul+1.8%
Aug-0.0%
Sep+1.5%
Oct+1.7%
Nov-0.3%
Dec+0.1%
Last 5Y Avg
Jan+0.6%
Feb+4.5%
Mar+1.0%
Apr-0.3%
May-2.2%
Jun-1.3%
Jul+3.4%
Aug-3.4%
Sep-2.5%
Oct+1.5%
Nov+4.2%
Dec-0.2%
Std Dev (σ)
Jan4.6%
Feb5.6%
Mar4.6%
Apr4.6%
May5.3%
Jun5.4%
Jul4.9%
Aug4.8%
Sep5.0%
Oct4.9%
Nov5.4%
Dec6.7%
Consistency (μ/σ)
Jan0.05
Feb0.08
Mar0.19
Apr0.29
May0.13
Jun0.19
Jul0.36
Aug-0.11
Sep0.11
Oct0.40
Nov0.17
Dec-0.05
Win Rate (%)
Jan58%
Feb53%
Mar53%
Apr65%
May57%
Jun57%
Jul72%
Aug47%
Sep61%
Oct61%
Nov47%
Dec50%
Winning / Losing Months
Jan▲21▼15
Feb▲19▼17
Mar▲19▼17
Apr▲24▼13
May▲21▼16
Jun▲21▼16
Jul▲26▼10
Aug▲17▼19
Sep▲22▼14
Oct▲22▼14
Nov▲17▼19
Dec▲18▼18
Longest Win / Loss Streak
Jan▲7▼5
Feb▲2▼4
Mar▲5▼4
Apr▲5▼3
May▲4▼4
Jun▲7▼3
Jul▲7▼2
Aug▲3▼6
Sep▲5▼5
Oct▲7▼4
Nov▲2▼4
Dec▲6▼4
Best
Jan+7.6%1992
Feb+13.9%2026
Mar+12.4%2021
Apr+14.6%2000
May+13.5%2022
Jun+18.0%2016
Jul+12.1%2024
Aug+11.5%2007
Sep+13.3%1998
Oct+12.2%2014
Nov+13.7%1997
Dec+13.1%2021
Worst
Jan-13.1%1998
Feb-11.2%2008
Mar-10.6%1999
Apr-6.9%1992
May-9.1%2023
Jun-13.0%2020
Jul-9.1%2007
Aug-11.3%2022
Sep-11.2%2020
Oct-6.1%2005
Nov-14.6%2002
Dec-13.7%2017
−14.6%+18.0%
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