Portland Kgw-Tv Weather Records (USC00356749)
Record envelope, standing records and threshold days for Portland Kgw-Tv (USC00356749), Oregon, United States, with 54 years of record.
Key Facts for Portland Kgw-Tv
- Portland Kgw-Tv (USC00356749) is a weather station in Oregon, United States at 45.52 latitude and -122.69 longitude, 49 m (159 ft) above sea level.
- The station reports from 1973 to 2026, 54 years of record.
- 1,464 records set at Portland Kgw-Tv still stand.
- Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
- Portland Kgw-Tv set a daily record low minimum temperature of 7.8 C (46.0 F) on 26 September 2026 (provisional).
Provisional Records
Records set in the last 60 days are provisional until they clear the revision window.
About the Station
- Location: Oregon, United States, 45.52 latitude, -122.69 longitude.
- Elevation: 49 m (159 ft).
- Period of record: 1973 to 2026, 54 years.
- Eligible elements: tmax, tmin, prcp, snow, snwd.
Daily Record Envelope and 2026
11 days at or beyond a record| Month | Highest record high | Lowest record low | 2026 highest maximum | 2026 lowest minimum |
|---|---|---|---|---|
| Jan | 18.3 C (64.9 F) | -11.1 C (12.0 F) | 12.8 C (55.0 F) | -2.2 C (28.0 F) |
| Feb | 21.7 C (71.1 F) | -13.3 C (8.1 F) | 15.6 C (60.1 F) | 0.6 C (33.1 F) |
| Mar | 27.8 C (82.0 F) | -4.4 C (24.1 F) | 22.2 C (72.0 F) | 1.7 C (35.1 F) |
| Apr | 32.2 C (90.0 F) | -0.6 C (30.9 F) | 27.8 C (82.0 F) | 2.8 C (37.0 F) |
| May | 39.4 C (102.9 F) | 2.2 C (36.0 F) | 32.8 C (91.0 F) | 5.0 C (41.0 F) |
| Jun | 45.6 C (114.1 F) | 4.4 C (39.9 F) | 34.4 C (93.9 F) | 8.9 C (48.0 F) |
| Jul | 40.6 C (105.1 F) | 7.2 C (45.0 F) | 36.7 C (98.1 F) | 10.6 C (51.1 F) |
| Aug | 41.1 C (106.0 F) | 7.8 C (46.0 F) | 33.9 C (93.0 F) | 11.1 C (52.0 F) |
| Sep | 39.4 C (102.9 F) | 5.0 C (41.0 F) | 30.0 C (86.0 F) | 7.8 C (46.0 F) |
| Oct | 33.3 C (91.9 F) | -0.6 C (30.9 F) | 26.7 C (80.1 F) | 11.1 C (52.0 F) |
| Nov | 21.7 C (71.1 F) | -7.2 C (19.0 F) | n/a | n/a |
| Dec | 19.4 C (66.9 F) | -12.2 C (10.0 F) | n/a | n/a |
Which Years Hold Standing Records
1,464 standing records| Year set | Standing records |
|---|---|
| 1973 | 26 |
| 1974 | 40 |
| 1975 | 52 |
| 1976 | 33 |
| 1977 | 33 |
| 1978 | 42 |
| 1979 | 21 |
| 1980 | 36 |
| 1981 | 36 |
| 1982 | 39 |
| 1983 | 27 |
| 1984 | 31 |
| 1985 | 22 |
| 1986 | 35 |
| 1987 | 23 |
| 1988 | 28 |
| 1989 | 30 |
| 1990 | 30 |
| 1991 | 28 |
| 1992 | 35 |
| 1993 | 25 |
| 1994 | 22 |
| 1995 | 26 |
| 1996 | 40 |
| 1997 | 17 |
| 1998 | 14 |
| 1999 | 20 |
| 2000 | 18 |
| 2001 | 16 |
| 2002 | 36 |
| 2003 | 34 |
| 2004 | 23 |
| 2005 | 21 |
| 2006 | 22 |
| 2007 | 12 |
| 2008 | 38 |
| 2009 | 20 |
| 2010 | 16 |
| 2011 | 25 |
| 2012 | 22 |
| 2013 | 27 |
| 2014 | 37 |
| 2015 | 23 |
| 2016 | 28 |
| 2017 | 18 |
| 2018 | 28 |
| 2019 | 23 |
| 2020 | 17 |
| 2021 | 29 |
| 2022 | 25 |
| 2023 | 33 |
| 2024 | 31 |
| 2025 | 20 |
| 2026 | 11 |
All-Time Record Progression
5 new records| Date | Kind | Detail |
|---|---|---|
| 2009-07-28 | Record high minimum temperature | Record high minimum temperature 24.4 C (75.9 F) |
| 2017-01-11 | Record snow depth | Record snow depth 30.5 cm (12.0 in) |
| 2021-06-27 | Record high maximum temperature | Record high maximum temperature 43.3 C (109.9 F) |
| 2021-06-28 | Record high maximum temperature | Record high maximum temperature 45.6 C (114.1 F) |
| 2021-06-28 | Record high minimum temperature | Record high minimum temperature 25.0 C (77.0 F) |
Wettest Day of Each Month
Oct: 81.3 mm (3.2 in)| Month | Record daily precipitation (mm) | Date |
|---|---|---|
| Jan | 64.0 mm (2.5 in) | 15 January 1974 |
| Feb | 64.8 mm (2.6 in) | 28 February 2011 |
| Mar | 50.8 mm (2.0 in) | 12 March 2026 |
| Apr | 33.8 mm (1.3 in) | 11 April 2022 |
| May | 38.1 mm (1.5 in) | 31 May 1997 |
| Jun | 41.9 mm (1.6 in) | 20 June 1991 |
| Jul | 32.3 mm (1.3 in) | 8 July 1974 |
| Aug | 34.5 mm (1.4 in) | 25 August 1977 |
| Sep | 45.5 mm (1.8 in) | 27 September 2021 |
| Oct | 81.3 mm (3.2 in) | 27 October 1994 |
| Nov | 81.3 mm (3.2 in) | 19 November 1996 |
| Dec | 78.2 mm (3.1 in) | 3 December 2007 |
Period of Record Coverage
1973 to 2026| Year | Days with data | Share of year | Complete |
|---|---|---|---|
| 1973 | 153 | 42% | No |
| 1974 | 365 | 100% | Yes |
| 1975 | 365 | 100% | Yes |
| 1976 | 366 | 100% | Yes |
| 1977 | 334 | 92% | Yes |
| 1978 | 359 | 98% | Yes |
| 1979 | 268 | 73% | No |
| 1980 | 366 | 100% | Yes |
| 1981 | 365 | 100% | Yes |
| 1982 | 365 | 100% | Yes |
| 1983 | 365 | 100% | Yes |
| 1984 | 364 | 99% | Yes |
| 1985 | 306 | 84% | No |
| 1986 | 363 | 99% | Yes |
| 1987 | 364 | 100% | Yes |
| 1988 | 366 | 100% | Yes |
| 1989 | 365 | 100% | Yes |
| 1990 | 334 | 92% | Yes |
| 1991 | 365 | 100% | Yes |
| 1992 | 366 | 100% | Yes |
| 1993 | 365 | 100% | Yes |
| 1994 | 364 | 100% | Yes |
| 1995 | 363 | 99% | Yes |
| 1996 | 359 | 98% | Yes |
| 1997 | 364 | 100% | Yes |
| 1998 | 364 | 100% | Yes |
| 1999 | 328 | 90% | No |
| 2000 | 359 | 98% | Yes |
| 2001 | 360 | 99% | Yes |
| 2002 | 363 | 99% | Yes |
| 2003 | 359 | 98% | Yes |
| 2004 | 356 | 97% | Yes |
| 2005 | 347 | 95% | Yes |
| 2006 | 319 | 87% | No |
| 2007 | 354 | 97% | Yes |
| 2008 | 316 | 86% | No |
| 2009 | 363 | 99% | Yes |
| 2010 | 357 | 98% | Yes |
| 2011 | 363 | 99% | Yes |
| 2012 | 365 | 100% | Yes |
| 2013 | 361 | 99% | Yes |
| 2014 | 364 | 100% | Yes |
| 2015 | 364 | 100% | Yes |
| 2016 | 365 | 100% | Yes |
| 2017 | 365 | 100% | Yes |
| 2018 | 365 | 100% | Yes |
| 2019 | 365 | 100% | Yes |
| 2020 | 366 | 100% | Yes |
| 2021 | 365 | 100% | Yes |
| 2022 | 365 | 100% | Yes |
| 2023 | 365 | 100% | Yes |
| 2024 | 366 | 100% | Yes |
| 2025 | 365 | 100% | Yes |
| 2026 | 278 | 76% | No |
Latest Records
20| Date | Station | Record | Value | Beat old record by | Old record stood | Significance |
|---|---|---|---|---|---|---|
| 26 September 2026 | Portland Kgw-Tv, US | daily low min (Provisional) | 7.8 C (46.0 F) | 0.5 C (0.9 F) | 25 years | 14 of 100 (Routine) |
| 3 September 2026 | Portland Kgw-Tv, US | daily low max (Provisional) | 16.7 C (62.1 F) | 2.2 C (4.0 F) | 11 years | 12 of 100 (Routine) |
| 22 July 2026 | Portland Kgw-Tv, US | daily high min | 22.2 C (72.0 F) | 1.6 C (2.9 F) | 32 years | 20 of 100 (Routine) |
| 16 June 2026 | Portland Kgw-Tv, US | daily high min (Tie) | 14.4 C (57.9 F) | tie | 27 years | 3 of 100 (Routine) |
| 15 June 2026 | Portland Kgw-Tv, US | daily high min | 18.3 C (64.9 F) | 2.2 C (4.0 F) | 11 years | 16 of 100 (Routine) |
| 15 June 2026 | Portland Kgw-Tv, US | daily high max | 34.4 C (93.9 F) | 2.7 C (4.9 F) | 11 years | 13 of 100 (Routine) |
| 14 June 2026 | Portland Kgw-Tv, US | daily high min | 18.3 C (64.9 F) | 2.2 C (4.0 F) | 37 years | 24 of 100 (Routine) |
| 14 June 2026 | Portland Kgw-Tv, US | daily high max | 33.9 C (93.0 F) | 0.6 C (1.1 F) | 37 years | 17 of 100 (Routine) |
| 31 May 2026 | Portland Kgw-Tv, US | daily low min | 6.7 C (44.1 F) | 0.5 C (0.9 F) | 49 years | 20 of 100 (Routine) |
| 30 May 2026 | Portland Kgw-Tv, US | daily low min (Tie) | 6.7 C (44.1 F) | tie | 27 years | 3 of 100 (Routine) |
| 3 May 2026 | Portland Kgw-Tv, US | daily high max | 32.8 C (91.0 F) | 0.6 C (1.1 F) | 33 years | 16 of 100 (Routine) |
| 19 March 2026 | Portland Kgw-Tv, US | daily high min (Tie) | 11.7 C (53.1 F) | tie | 28 years | 3 of 100 (Routine) |
| 17 March 2026 | Portland Kgw-Tv, US | daily high min | 10.6 C (51.1 F) | 0.6 C (1.1 F) | 36 years | 17 of 100 (Routine) |
| 12 March 2026 | Portland Kgw-Tv, US | monthly rain | 50.8 mm (2.0 in) | 8.6 mm (0.34 in) | 10 years | 30 of 100 (Routine) |
| 4 February 2026 | Portland Kgw-Tv, US | daily high max (Tie) | 15.6 C (60.1 F) | tie | 19 years | 2 of 100 (Routine) |
| 3 February 2026 | Portland Kgw-Tv, US | daily high max (Tie) | 15.6 C (60.1 F) | tie | 34 years | 3 of 100 (Routine) |
| 2 February 2026 | Portland Kgw-Tv, US | daily high max | 15.0 C (59.0 F) | 0.6 C (1.1 F) | 11 years | 9 of 100 (Routine) |
| 25 January 2026 | Portland Kgw-Tv, US | daily low min | -2.2 C (28.0 F) | 1.1 C (2.0 F) | 50 years | 23 of 100 (Routine) |
| 24 January 2026 | Portland Kgw-Tv, US | daily low min | -1.7 C (28.9 F) | 0.6 C (1.1 F) | 46 years | 19 of 100 (Routine) |
| 18 December 2025 | Portland Kgw-Tv, US | daily rain | 50.3 mm (2.0 in) | 25.7 mm (1.0 in) | 4 years | 30 of 100 (Routine) |
Climate Trend
45 complete years, 1974 to 2025| Year | Annual mean temperature | Difference from the station mean |
|---|---|---|
| 1974 | 12.4 C | -0.17 C |
| 1975 | 11.8 C | -0.81 C |
| 1976 | 12.2 C | -0.46 C |
| 1978 | 12.5 C | -0.09 C |
| 1980 | 12.3 C | -0.36 C |
| 1981 | 12.8 C | +0.22 C |
| 1982 | 11.8 C | -0.82 C |
| 1983 | 12.4 C | -0.22 C |
| 1984 | 11.9 C | -0.75 C |
| 1986 | 12.8 C | +0.20 C |
| 1987 | 13.2 C | +0.62 C |
| 1988 | 12.5 C | -0.15 C |
| 1989 | 12.1 C | -0.55 C |
| 1991 | 12.6 C | -0.06 C |
| 1992 | 13.8 C | +1.23 C |
| 1993 | 11.8 C | -0.77 C |
| 1994 | 12.6 C | +0.01 C |
| 1995 | 13.1 C | +0.52 C |
| 1996 | 12.2 C | -0.40 C |
| 1997 | 12.9 C | +0.24 C |
| 1998 | 13.0 C | +0.35 C |
| 2000 | 12.2 C | -0.39 C |
| 2001 | 12.3 C | -0.27 C |
| 2002 | 12.6 C | +0.01 C |
| 2003 | 13.2 C | +0.57 C |
| 2004 | 13.2 C | +0.56 C |
| 2005 | 12.8 C | +0.18 C |
| 2007 | 12.3 C | -0.34 C |
| 2009 | 12.4 C | -0.20 C |
| 2010 | 12.6 C | -0.06 C |
| 2011 | 11.6 C | -1.06 C |
| 2012 | 12.3 C | -0.36 C |
| 2013 | 12.2 C | -0.43 C |
| 2014 | 13.2 C | +0.58 C |
| 2015 | 14.0 C | +1.35 C |
| 2016 | 13.2 C | +0.55 C |
| 2017 | 12.2 C | -0.38 C |
| 2018 | 13.1 C | +0.51 C |
| 2019 | 12.2 C | -0.38 C |
| 2020 | 13.0 C | +0.35 C |
| 2021 | 13.0 C | +0.38 C |
| 2022 | 12.6 C | -0.02 C |
| 2023 | 12.9 C | +0.26 C |
| 2024 | 12.8 C | +0.20 C |
| 2025 | 13.4 C | +0.74 C |
The annual mean temperature here has risen by 0.11 C (0.01 to 0.21) per decade over 1974 to 2025. In Fahrenheit: 0.20 F (0.02 to 0.38) per decade. The slope is a straight line fitted to 45 complete years; the brackets give its 95 percent interval.
| Measure | Per decade (C) | Per decade (F) | Period | Complete years | Reading |
|---|---|---|---|---|---|
| Annual mean temperature | 0.11 C (0.01 to 0.21) per decade | 0.20 F (0.02 to 0.38) per decade | 1974 to 2025 | 45 | Rise |
| Mean daily maximum | 0.1 C (-0.1 to 0.2) per decade | 0.1 F (-0.1 to 0.3) per decade | 1974 to 2025 | 45 | Not clearly different from zero |
| Mean daily minimum | 0.2 C (0.1 to 0.3) per decade | 0.3 F (0.1 to 0.5) per decade | 1974 to 2025 | 45 | Rise |
A year is complete when all 12 months have at least 20 days of both daily maximum and daily minimum readings. The annual mean is the mean of the monthly means. The trend describes this one station over this period; it does not say what caused the change.
Extremes by Year
1973 to 2026| Measure | Record | Year of the record | Median year | Years with a value |
|---|---|---|---|---|
| Hottest day (TXx) | 45.6 C (114.1 F) | 2021 | 37.8 C (100.0 F) | 54 |
| Coldest night (TNn) | -13.3 C (8.1 F) | 1989 | -5.0 C (23.0 F) | 54 |
| Wettest day (Rx1day) | 81.3 mm (3.2 in) | 1994 | 47.4 mm (1.9 in) | 54 |
| Wettest five days (Rx5day) | 211.5 mm (8.3 in) | 1996 | 106.3 mm (4.2 in) | 54 |
| Longest dry spell (CDD) | 94 days | 2021 | 36 days | 54 |
Hottest day (TXx)
| Year | Hottest day (TXx) |
|---|---|
| 1973 | 36.1 C (97.0 F) |
| 1974 | 35.6 C (96.1 F) |
| 1975 | 35.0 C (95.0 F) |
| 1976 | 34.4 C (93.9 F) |
| 1977 | 40.6 C (105.1 F) |
| 1978 | 40.6 C (105.1 F) |
| 1979 | 40.0 C (104.0 F) |
| 1980 | 38.3 C (100.9 F) |
| 1981 | 41.1 C (106.0 F) |
| 1982 | 38.3 C (100.9 F) |
| 1983 | 39.4 C (102.9 F) |
| 1984 | 35.0 C (95.0 F) |
| 1985 | 37.8 C (100.0 F) |
| 1986 | 36.7 C (98.1 F) |
| 1987 | 38.3 C (100.9 F) |
| 1988 | 39.4 C (102.9 F) |
| 1989 | 33.9 C (93.0 F) |
| 1990 | 38.3 C (100.9 F) |
| 1991 | 37.8 C (100.0 F) |
| 1992 | 38.9 C (102.0 F) |
| 1993 | 37.2 C (99.0 F) |
| 1994 | 38.3 C (100.9 F) |
| 1995 | 36.7 C (98.1 F) |
| 1996 | 36.7 C (98.1 F) |
| 1997 | 35.6 C (96.1 F) |
| 1998 | 37.8 C (100.0 F) |
| 1999 | 33.9 C (93.0 F) |
| 2000 | 36.7 C (98.1 F) |
| 2001 | 37.2 C (99.0 F) |
| 2002 | 37.8 C (100.0 F) |
| 2003 | 37.2 C (99.0 F) |
| 2004 | 38.9 C (102.0 F) |
| 2005 | 36.1 C (97.0 F) |
| 2006 | 40.0 C (104.0 F) |
| 2007 | 37.8 C (100.0 F) |
| 2008 | 38.9 C (102.0 F) |
| 2009 | 40.6 C (105.1 F) |
| 2010 | 36.7 C (98.1 F) |
| 2011 | 34.4 C (93.9 F) |
| 2012 | 37.8 C (100.0 F) |
| 2013 | 35.0 C (95.0 F) |
| 2014 | 36.7 C (98.1 F) |
| 2015 | 38.3 C (100.9 F) |
| 2016 | 36.7 C (98.1 F) |
| 2017 | 39.4 C (102.9 F) |
| 2018 | 36.1 C (97.0 F) |
| 2019 | 36.1 C (97.0 F) |
| 2020 | 37.2 C (99.0 F) |
| 2021 | 45.6 C (114.1 F) |
| 2022 | 38.3 C (100.9 F) |
| 2023 | 40.0 C (104.0 F) |
| 2024 | 37.8 C (100.0 F) |
| 2025 | 37.2 C (99.0 F) |
| 2026 | 36.7 C (98.1 F) |
Coldest night (TNn)
| Year | Coldest night (TNn) |
|---|---|
| 1973 | 0.0 C (32.0 F) |
| 1974 | -9.4 C (15.1 F) |
| 1975 | -3.9 C (25.0 F) |
| 1976 | -2.8 C (27.0 F) |
| 1977 | -6.1 C (21.0 F) |
| 1978 | -10.0 C (14.0 F) |
| 1979 | -11.1 C (12.0 F) |
| 1980 | -8.9 C (16.0 F) |
| 1981 | -2.2 C (28.0 F) |
| 1982 | -7.8 C (18.0 F) |
| 1983 | -12.2 C (10.0 F) |
| 1984 | -7.8 C (18.0 F) |
| 1985 | -7.2 C (19.0 F) |
| 1986 | -1.1 C (30.0 F) |
| 1987 | -4.4 C (24.1 F) |
| 1988 | -5.0 C (23.0 F) |
| 1989 | -13.3 C (8.1 F) |
| 1990 | -11.7 C (10.9 F) |
| 1991 | -2.8 C (27.0 F) |
| 1992 | -2.8 C (27.0 F) |
| 1993 | -5.0 C (23.0 F) |
| 1994 | -3.9 C (25.0 F) |
| 1995 | -7.8 C (18.0 F) |
| 1996 | -8.9 C (16.0 F) |
| 1997 | -2.2 C (28.0 F) |
| 1998 | -8.3 C (17.1 F) |
| 1999 | 0.0 C (32.0 F) |
| 2000 | -2.2 C (28.0 F) |
| 2001 | -2.2 C (28.0 F) |
| 2002 | -1.1 C (30.0 F) |
| 2003 | -2.2 C (28.0 F) |
| 2004 | -9.4 C (15.1 F) |
| 2005 | -3.3 C (26.1 F) |
| 2006 | -4.4 C (24.1 F) |
| 2007 | -5.0 C (23.0 F) |
| 2008 | -7.8 C (18.0 F) |
| 2009 | -7.8 C (18.0 F) |
| 2010 | -7.2 C (19.0 F) |
| 2011 | -7.2 C (19.0 F) |
| 2012 | -1.7 C (28.9 F) |
| 2013 | -10.0 C (14.0 F) |
| 2014 | -8.3 C (17.1 F) |
| 2015 | -3.3 C (26.1 F) |
| 2016 | -3.9 C (25.0 F) |
| 2017 | -7.2 C (19.0 F) |
| 2018 | -5.0 C (23.0 F) |
| 2019 | -3.9 C (25.0 F) |
| 2020 | -1.7 C (28.9 F) |
| 2021 | -5.6 C (21.9 F) |
| 2022 | -8.9 C (16.0 F) |
| 2023 | -6.7 C (19.9 F) |
| 2024 | -11.1 C (12.0 F) |
| 2025 | -4.4 C (24.1 F) |
| 2026 | -2.2 C (28.0 F) |
Wettest day (Rx1day)
| Year | Wettest day (Rx1day) |
|---|---|
| 1973 | 70.4 mm (2.8 in) |
| 1974 | 64.0 mm (2.5 in) |
| 1975 | 47.0 mm (1.9 in) |
| 1976 | 30.7 mm (1.2 in) |
| 1977 | 34.5 mm (1.4 in) |
| 1978 | 27.9 mm (1.1 in) |
| 1979 | 31.8 mm (1.3 in) |
| 1980 | 48.3 mm (1.9 in) |
| 1981 | 50.8 mm (2.0 in) |
| 1982 | 52.8 mm (2.1 in) |
| 1983 | 56.4 mm (2.2 in) |
| 1984 | 48.5 mm (1.9 in) |
| 1985 | 29.5 mm (1.2 in) |
| 1986 | 27.9 mm (1.1 in) |
| 1987 | 45.2 mm (1.8 in) |
| 1988 | 45.2 mm (1.8 in) |
| 1989 | 34.0 mm (1.3 in) |
| 1990 | 38.9 mm (1.5 in) |
| 1991 | 42.4 mm (1.7 in) |
| 1992 | 41.1 mm (1.6 in) |
| 1993 | 31.5 mm (1.2 in) |
| 1994 | 81.3 mm (3.2 in) |
| 1995 | 51.1 mm (2.0 in) |
| 1996 | 81.3 mm (3.2 in) |
| 1997 | 58.4 mm (2.3 in) |
| 1998 | 52.6 mm (2.1 in) |
| 1999 | 39.9 mm (1.6 in) |
| 2000 | 38.9 mm (1.5 in) |
| 2001 | 41.9 mm (1.6 in) |
| 2002 | 36.6 mm (1.4 in) |
| 2003 | 64.0 mm (2.5 in) |
| 2004 | 26.2 mm (1.0 in) |
| 2005 | 46.0 mm (1.8 in) |
| 2006 | 36.1 mm (1.4 in) |
| 2007 | 78.2 mm (3.1 in) |
| 2008 | 39.1 mm (1.5 in) |
| 2009 | 48.5 mm (1.9 in) |
| 2010 | 54.4 mm (2.1 in) |
| 2011 | 66.5 mm (2.6 in) |
| 2012 | 56.4 mm (2.2 in) |
| 2013 | 41.9 mm (1.6 in) |
| 2014 | 47.8 mm (1.9 in) |
| 2015 | 71.4 mm (2.8 in) |
| 2016 | 51.1 mm (2.0 in) |
| 2017 | 63.2 mm (2.5 in) |
| 2018 | 31.2 mm (1.2 in) |
| 2019 | 32.3 mm (1.3 in) |
| 2020 | 38.4 mm (1.5 in) |
| 2021 | 54.9 mm (2.2 in) |
| 2022 | 53.6 mm (2.1 in) |
| 2023 | 49.3 mm (1.9 in) |
| 2024 | 38.9 mm (1.5 in) |
| 2025 | 50.3 mm (2.0 in) |
| 2026 | 50.8 mm (2.0 in) |
Wettest five days (Rx5day)
| Year | Wettest five days (Rx5day) |
|---|---|
| 1973 | 135.9 mm (5.4 in) |
| 1974 | 146.0 mm (5.7 in) |
| 1975 | 87.6 mm (3.4 in) |
| 1976 | 85.6 mm (3.4 in) |
| 1977 | 79.0 mm (3.1 in) |
| 1978 | 63.2 mm (2.5 in) |
| 1979 | 68.0 mm (2.7 in) |
| 1980 | 138.7 mm (5.5 in) |
| 1981 | 97.0 mm (3.8 in) |
| 1982 | 108.0 mm (4.3 in) |
| 1983 | 94.9 mm (3.7 in) |
| 1984 | 85.4 mm (3.4 in) |
| 1985 | 59.9 mm (2.4 in) |
| 1986 | 92.2 mm (3.6 in) |
| 1987 | 136.8 mm (5.4 in) |
| 1988 | 85.3 mm (3.4 in) |
| 1989 | 66.1 mm (2.6 in) |
| 1990 | 88.8 mm (3.5 in) |
| 1991 | 69.7 mm (2.7 in) |
| 1992 | 76.7 mm (3.0 in) |
| 1993 | 101.4 mm (4.0 in) |
| 1994 | 163.1 mm (6.4 in) |
| 1995 | 131.5 mm (5.2 in) |
| 1996 | 211.5 mm (8.3 in) |
| 1997 | 140.1 mm (5.5 in) |
| 1998 | 141.8 mm (5.6 in) |
| 1999 | 115.8 mm (4.6 in) |
| 2000 | 94.2 mm (3.7 in) |
| 2001 | 104.6 mm (4.1 in) |
| 2002 | 99.3 mm (3.9 in) |
| 2003 | 116.3 mm (4.6 in) |
| 2004 | 63.1 mm (2.5 in) |
| 2005 | 131.6 mm (5.2 in) |
| 2006 | 113.3 mm (4.5 in) |
| 2007 | 137.6 mm (5.4 in) |
| 2008 | 64.3 mm (2.5 in) |
| 2009 | 122.9 mm (4.8 in) |
| 2010 | 115.1 mm (4.5 in) |
| 2011 | 113.0 mm (4.4 in) |
| 2012 | 143.3 mm (5.6 in) |
| 2013 | 109.5 mm (4.3 in) |
| 2014 | 81.8 mm (3.2 in) |
| 2015 | 168.7 mm (6.6 in) |
| 2016 | 107.8 mm (4.2 in) |
| 2017 | 135.8 mm (5.3 in) |
| 2018 | 63.8 mm (2.5 in) |
| 2019 | 73.4 mm (2.9 in) |
| 2020 | 67.4 mm (2.7 in) |
| 2021 | 108.0 mm (4.3 in) |
| 2022 | 138.7 mm (5.5 in) |
| 2023 | 137.0 mm (5.4 in) |
| 2024 | 81.5 mm (3.2 in) |
| 2025 | 104.8 mm (4.1 in) |
| 2026 | 110.1 mm (4.3 in) |
Longest dry spell (CDD)
| Year | Longest dry spell (CDD) |
|---|---|
| 1973 | 11 days |
| 1974 | 30 days |
| 1975 | 33 days |
| 1976 | 26 days |
| 1977 | 28 days |
| 1978 | 32 days |
| 1979 | 22 days |
| 1980 | 57 days |
| 1981 | 67 days |
| 1982 | 16 days |
| 1983 | 30 days |
| 1984 | 62 days |
| 1985 | 52 days |
| 1986 | 44 days |
| 1987 | 35 days |
| 1988 | 35 days |
| 1989 | 24 days |
| 1990 | 42 days |
| 1991 | 32 days |
| 1992 | 39 days |
| 1993 | 43 days |
| 1994 | 32 days |
| 1995 | 27 days |
| 1996 | 31 days |
| 1997 | 42 days |
| 1998 | 48 days |
| 1999 | 27 days |
| 2000 | 45 days |
| 2001 | 33 days |
| 2002 | 69 days |
| 2003 | 51 days |
| 2004 | 56 days |
| 2005 | 37 days |
| 2006 | 48 days |
| 2007 | 31 days |
| 2008 | 43 days |
| 2009 | 29 days |
| 2010 | 54 days |
| 2011 | 34 days |
| 2012 | 88 days |
| 2013 | 53 days |
| 2014 | 20 days |
| 2015 | 39 days |
| 2016 | 23 days |
| 2017 | 57 days |
| 2018 | 80 days |
| 2019 | 25 days |
| 2020 | 29 days |
| 2021 | 94 days |
| 2022 | 83 days |
| 2023 | 66 days |
| 2024 | 24 days |
| 2025 | 23 days |
| 2026 | 47 days |
Each chart shows one value per year; the dot marks the record year. TXx is the hottest daily maximum, TNn the coldest daily minimum, Rx1day and Rx5day the largest one-day and five-day rain totals, and CDD the longest run of days with less than 1 mm of rain. A year with missing days can understate an extreme.
Frost Dates and Growing Season
41 years with a frostAcross 41 years with a frost, the median last spring frost at Portland Kgw-Tv falls on 2 March and the median first autumn frost on 26 November, which leaves a median of 274 days between them.
Fitted over all years, the growing season changes by -3.8 days per decade at this station.
| Measure | Median, all years | Earliest period | Recent period (1988 to 2024) | Recent against earliest | Fitted trend |
|---|---|---|---|---|---|
| Last spring frost | 2 March | n/a | 3 March | n/a | +2.4 days per decade |
| First autumn frost | 26 November | n/a | 24 November | n/a | -1.3 days per decade |
| Growing days | 274 days | n/a | 271 days | n/a | -3.8 days per decade |
A frost day is a day with a daily minimum at or below 0 C (32 F). The last spring frost and the first autumn frost are the last and first such days of the cold season, and growing days are the days between them. A negative trend for the last spring frost means it comes earlier.
Rainfall Return Levels
49 years, 1974 to 2025A day with at least 46.2 mm (1.8 in) of rain is expected about once in 2 years. A day with at least 88.0 mm (3.5 in) of rain is expected about once in 100 years.
| Expected about once in | A day with at least | Note |
|---|---|---|
| 2 years | 46.2 mm (1.8 in) | |
| 5 years | 58.6 mm (2.3 in) | |
| 10 years | 66.3 mm (2.6 in) | |
| 25 years | 75.4 mm (3.0 in) | |
| 50 years | 81.9 mm (3.2 in) | Longer than the 49 years of record |
| 100 years | 88.0 mm (3.5 in) | Longer than the 49 years of record |
The levels come from a generalised extreme value (GEV) distribution fitted by L-moments to the wettest-day total of each year, 49 years of values from 1974 to 2025.
A return level is an estimate. It is least reliable for the long periods, 50 and 100 years, and for any period longer than the record behind the fit, where the fit has to reach past the largest day actually observed. It is not a forecast.
The largest wettest-day totals in the fit: 81.3 mm (3.2 in) in 1994; 81.3 mm (3.2 in) in 1996; 78.2 mm (3.1 in) in 2007.
Station Changes
No change in the annual mean temperature of this station was found against its neighbours.
Download the Data
Source: NOAA National Centers for Environmental Information, Global Historical Climatology Network Daily (GHCN-Daily). Records are computed by World Extreme Weather Monitor and are not official NOAA products. (US Government open data (NOAA NCEI)) Data as of 2026-10-13 (13 October 2026). Records are computed by this site and are not official.
Data as of . Last revised (2026-10-13).