Portland (Cashmore Airport) Weather Records (ASN00090171)
Record envelope, standing records and threshold days for Portland (Cashmore Airport) (ASN00090171), Australia, with 45 years of record.
Key Facts for Portland (Cashmore Airport)
- Portland (Cashmore Airport) (ASN00090171) is a weather station in Australia at -38.31 latitude and 141.47 longitude, 81 m (265 ft) above sea level.
- The station reports from 1982 to 2026, 45 years of record.
- 1,464 records set at Portland (Cashmore Airport) still stand.
- Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
- Portland (Cashmore Airport) set a daily record high minimum temperature of 13.9 C (57.0 F) on 25 September 2026 (provisional).
Provisional Records
Records set in the last 60 days are provisional until they clear the revision window.
About the Station
- Location: Australia, -38.31 latitude, 141.47 longitude.
- Elevation: 81 m (265 ft).
- Period of record: 1982 to 2026, 45 years.
- Eligible elements: tmax, tmin, prcp.
Daily Record Envelope and 2026
16 days at or beyond a record| Month | Highest record high | Lowest record low | 2026 highest maximum | 2026 lowest minimum |
|---|---|---|---|---|
| Jan | 42.1 C (107.8 F) | 1.6 C (34.9 F) | 39.3 C (102.7 F) | 5.7 C (42.3 F) |
| Feb | 43.1 C (109.6 F) | 4.1 C (39.4 F) | 36.2 C (97.2 F) | 5.8 C (42.4 F) |
| Mar | 40.5 C (104.9 F) | 2.5 C (36.5 F) | 30.2 C (86.4 F) | 6.5 C (43.7 F) |
| Apr | 34.2 C (93.6 F) | 1.2 C (34.2 F) | 27.5 C (81.5 F) | 4.8 C (40.6 F) |
| May | 26.8 C (80.2 F) | 0.0 C (32.0 F) | 26.8 C (80.2 F) | 3.4 C (38.1 F) |
| Jun | 20.6 C (69.1 F) | -1.5 C (29.3 F) | 18.7 C (65.7 F) | 2.1 C (35.8 F) |
| Jul | 18.7 C (65.7 F) | -2.3 C (27.9 F) | 17.1 C (62.8 F) | 0.5 C (32.9 F) |
| Aug | 24.4 C (75.9 F) | -1.1 C (30.0 F) | 19.1 C (66.4 F) | 2.2 C (36.0 F) |
| Sep | 31.0 C (87.8 F) | -0.6 C (30.9 F) | 24.7 C (76.5 F) | 0.7 C (33.3 F) |
| Oct | 32.8 C (91.0 F) | -0.9 C (30.4 F) | 16.3 C (61.3 F) | 5.1 C (41.2 F) |
| Nov | 35.5 C (95.9 F) | 1.5 C (34.7 F) | n/a | n/a |
| Dec | 38.5 C (101.3 F) | 0.9 C (33.6 F) | n/a | n/a |
Which Years Hold Standing Records
1,464 standing records| Year set | Standing records |
|---|---|
| 1982 | 25 |
| 1983 | 36 |
| 1984 | 20 |
| 1985 | 32 |
| 1986 | 29 |
| 1987 | 50 |
| 1988 | 21 |
| 1989 | 13 |
| 1990 | 36 |
| 1991 | 24 |
| 1992 | 34 |
| 1993 | 29 |
| 1994 | 51 |
| 1995 | 40 |
| 1996 | 40 |
| 1997 | 41 |
| 1998 | 34 |
| 1999 | 32 |
| 2000 | 22 |
| 2001 | 32 |
| 2002 | 26 |
| 2003 | 27 |
| 2004 | 42 |
| 2005 | 39 |
| 2006 | 49 |
| 2007 | 35 |
| 2008 | 34 |
| 2009 | 39 |
| 2010 | 32 |
| 2011 | 30 |
| 2012 | 24 |
| 2013 | 48 |
| 2014 | 38 |
| 2015 | 35 |
| 2016 | 23 |
| 2017 | 36 |
| 2018 | 17 |
| 2019 | 48 |
| 2020 | 38 |
| 2021 | 20 |
| 2022 | 27 |
| 2023 | 28 |
| 2024 | 34 |
| 2025 | 31 |
| 2026 | 23 |
Wettest Day of Each Month
Mar: 77.2 mm (3.0 in)| Month | Record daily precipitation (mm) | Date |
|---|---|---|
| Jan | 72.0 mm (2.8 in) | 14 January 2011 |
| Feb | 50.0 mm (2.0 in) | 25 February 2016 |
| Mar | 77.2 mm (3.0 in) | 22 March 1983 |
| Apr | 50.0 mm (2.0 in) | 2 April 1985 |
| May | 59.4 mm (2.3 in) | 27 May 2000 |
| Jun | 71.2 mm (2.8 in) | 14 June 2014 |
| Jul | 38.6 mm (1.5 in) | 3 July 2021 |
| Aug | 61.0 mm (2.4 in) | 14 August 2013 |
| Sep | 46.0 mm (1.8 in) | 9 September 2016 |
| Oct | 55.0 mm (2.2 in) | 23 October 2013 |
| Nov | 68.6 mm (2.7 in) | 26 November 2002 |
| Dec | 61.0 mm (2.4 in) | 13 December 2008 |
Period of Record Coverage
1982 to 2026| Year | Days with data | Share of year | Complete |
|---|---|---|---|
| 1982 | 205 | 56% | No |
| 1983 | 362 | 99% | Yes |
| 1984 | 366 | 100% | Yes |
| 1985 | 365 | 100% | Yes |
| 1986 | 365 | 100% | Yes |
| 1987 | 361 | 99% | Yes |
| 1988 | 365 | 100% | Yes |
| 1989 | 365 | 100% | Yes |
| 1990 | 365 | 100% | Yes |
| 1991 | 365 | 100% | Yes |
| 1992 | 366 | 100% | Yes |
| 1993 | 365 | 100% | Yes |
| 1994 | 365 | 100% | Yes |
| 1995 | 361 | 99% | Yes |
| 1996 | 363 | 99% | Yes |
| 1997 | 364 | 100% | Yes |
| 1998 | 359 | 98% | Yes |
| 1999 | 363 | 99% | Yes |
| 2000 | 361 | 99% | Yes |
| 2001 | 365 | 100% | Yes |
| 2002 | 361 | 99% | Yes |
| 2003 | 364 | 100% | Yes |
| 2004 | 364 | 99% | Yes |
| 2005 | 361 | 99% | Yes |
| 2006 | 354 | 97% | Yes |
| 2007 | 352 | 96% | Yes |
| 2008 | 360 | 98% | Yes |
| 2009 | 364 | 100% | Yes |
| 2010 | 365 | 100% | Yes |
| 2011 | 365 | 100% | Yes |
| 2012 | 365 | 100% | Yes |
| 2013 | 365 | 100% | Yes |
| 2014 | 364 | 100% | Yes |
| 2015 | 363 | 99% | Yes |
| 2016 | 366 | 100% | Yes |
| 2017 | 365 | 100% | Yes |
| 2018 | 365 | 100% | Yes |
| 2019 | 361 | 99% | Yes |
| 2020 | 365 | 100% | Yes |
| 2021 | 355 | 97% | Yes |
| 2022 | 354 | 97% | Yes |
| 2023 | 364 | 100% | Yes |
| 2024 | 362 | 99% | Yes |
| 2025 | 365 | 100% | Yes |
| 2026 | 279 | 76% | No |
Latest Records
20| Date | Station | Record | Value | Beat old record by | Old record stood | Significance |
|---|---|---|---|---|---|---|
| 25 September 2026 | Portland (Cashmore Airport), AU | daily high min (Provisional) | 13.9 C (57.0 F) | 0.9 C (1.6 F) | 12 years | 10 of 100 (Routine) |
| 22 September 2026 | Portland (Cashmore Airport), AU | daily low min (Provisional) | 0.7 C (33.3 F) | 2.0 C (3.6 F) | 40 years | 23 of 100 (Routine) |
| 20 September 2026 | Portland (Cashmore Airport), AU | daily high max (Provisional) | 24.7 C (76.5 F) | 2.6 C (4.7 F) | 7 years | 14 of 100 (Routine) |
| 19 September 2026 | Portland (Cashmore Airport), AU | daily high min (Provisional) | 13.7 C (56.7 F) | 0.7 C (1.3 F) | 36 years | 16 of 100 (Routine) |
| 8 September 2026 | Portland (Cashmore Airport), AU | daily low min (Provisional) | 2.1 C (35.8 F) | 0.3 C (0.5 F) | 15 years | 9 of 100 (Routine) |
| 28 July 2026 | Portland (Cashmore Airport), AU | daily high min | 10.2 C (50.4 F) | 0.6 C (1.1 F) | 20 years | 12 of 100 (Routine) |
| 19 July 2026 | Portland (Cashmore Airport), AU | daily low min | 1.8 C (35.2 F) | 0.1 C (0.2 F) | 16 years | 8 of 100 (Routine) |
| 16 July 2026 | Portland (Cashmore Airport), AU | daily high min | 11.2 C (52.2 F) | 0.1 C (0.2 F) | 12 years | 7 of 100 (Routine) |
| 15 July 2026 | Portland (Cashmore Airport), AU | daily high min | 10.7 C (51.3 F) | 0.6 C (1.1 F) | 12 years | 9 of 100 (Routine) |
| 13 July 2026 | Portland (Cashmore Airport), AU | daily high min | 10.5 C (50.9 F) | 0.3 C (0.5 F) | 27 years | 13 of 100 (Routine) |
| 12 July 2026 | Portland (Cashmore Airport), AU | daily rain | 26.2 mm (1.0 in) | 7.6 mm (0.30 in) | 5 years | 18 of 100 (Routine) |
| 18 June 2026 | Portland (Cashmore Airport), AU | daily high min | 13.9 C (57.0 F) | 3.4 C (6.1 F) | 11 years | 19 of 100 (Routine) |
| 17 June 2026 | Portland (Cashmore Airport), AU | monthly high min | 14.6 C (58.3 F) | 0.5 C (0.9 F) | 6 years | 17 of 100 (Routine) |
| 17 June 2026 | Portland (Cashmore Airport), AU | daily high max | 17.9 C (64.2 F) | 1.7 C (3.1 F) | 8 years | 15 of 100 (Routine) |
| 16 June 2026 | Portland (Cashmore Airport), AU | daily high max | 17.3 C (63.1 F) | 0.2 C (0.4 F) | 8 years | 7 of 100 (Routine) |
| 13 June 2026 | Portland (Cashmore Airport), AU | daily high min | 13.4 C (56.1 F) | 2.0 C (3.6 F) | 12 years | 14 of 100 (Routine) |
| 12 June 2026 | Portland (Cashmore Airport), AU | daily high max | 18.7 C (65.7 F) | 1.2 C (2.2 F) | 20 years | 17 of 100 (Routine) |
| 2 June 2026 | Portland (Cashmore Airport), AU | daily rain | 28.4 mm (1.1 in) | 14.0 mm (0.6 in) | 19 years | 31 of 100 (Routine) |
| 26 May 2026 | Portland (Cashmore Airport), AU | daily high min | 12.8 C (55.0 F) | 0.5 C (0.9 F) | 12 years | 8 of 100 (Routine) |
| 16 May 2026 | Portland (Cashmore Airport), AU | daily high min | 14.6 C (58.3 F) | 0.8 C (1.4 F) | 37 years | 17 of 100 (Routine) |
Climate Trend
43 complete years, 1983 to 2025| Year | Annual mean temperature | Difference from the station mean |
|---|---|---|
| 1983 | 13.3 C | -0.29 C |
| 1984 | 13.1 C | -0.42 C |
| 1985 | 13.4 C | -0.13 C |
| 1986 | 13.1 C | -0.44 C |
| 1987 | 13.2 C | -0.39 C |
| 1988 | 13.9 C | +0.36 C |
| 1989 | 13.6 C | +0.01 C |
| 1990 | 13.9 C | +0.32 C |
| 1991 | 13.2 C | -0.32 C |
| 1992 | 13.1 C | -0.43 C |
| 1993 | 13.6 C | +0.03 C |
| 1994 | 13.2 C | -0.39 C |
| 1995 | 12.8 C | -0.74 C |
| 1996 | 12.7 C | -0.86 C |
| 1997 | 13.2 C | -0.31 C |
| 1998 | 13.0 C | -0.55 C |
| 1999 | 13.8 C | +0.24 C |
| 2000 | 13.9 C | +0.32 C |
| 2001 | 13.7 C | +0.10 C |
| 2002 | 13.3 C | -0.21 C |
| 2003 | 13.2 C | -0.38 C |
| 2004 | 13.2 C | -0.37 C |
| 2005 | 13.8 C | +0.23 C |
| 2006 | 12.9 C | -0.61 C |
| 2007 | 14.0 C | +0.45 C |
| 2008 | 13.2 C | -0.32 C |
| 2009 | 13.6 C | +0.09 C |
| 2010 | 13.4 C | -0.16 C |
| 2011 | 13.8 C | +0.26 C |
| 2012 | 13.9 C | +0.35 C |
| 2013 | 14.3 C | +0.75 C |
| 2014 | 14.1 C | +0.54 C |
| 2015 | 13.8 C | +0.22 C |
| 2016 | 13.8 C | +0.27 C |
| 2017 | 14.1 C | +0.52 C |
| 2018 | 14.0 C | +0.44 C |
| 2019 | 13.7 C | +0.12 C |
| 2020 | 13.4 C | -0.11 C |
| 2021 | 13.5 C | -0.04 C |
| 2022 | 13.9 C | +0.32 C |
| 2023 | 13.9 C | +0.33 C |
| 2024 | 14.0 C | +0.44 C |
| 2025 | 14.1 C | +0.57 C |
The annual mean temperature here has risen by 0.2 C (0.1 to 0.3) per decade over 1983 to 2025. In Fahrenheit: 0.3 F (0.2 to 0.5) per decade. The slope is a straight line fitted to 43 complete years; the brackets give its 95 percent interval.
| Measure | Per decade (C) | Per decade (F) | Period | Complete years | Reading |
|---|---|---|---|---|---|
| Annual mean temperature | 0.2 C (0.1 to 0.3) per decade | 0.3 F (0.2 to 0.5) per decade | 1983 to 2025 | 43 | Rise |
| Mean daily maximum | 0.2 C (0.1 to 0.3) per decade | 0.4 F (0.2 to 0.6) per decade | 1983 to 2025 | 43 | Rise |
| Mean daily minimum | 0.12 C (0.03 to 0.21) per decade | 0.2 F (0.1 to 0.4) per decade | 1983 to 2025 | 43 | 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
1982 to 2026| Measure | Record | Year of the record | Median year | Years with a value |
|---|---|---|---|---|
| Hottest day (TXx) | 43.1 C (109.6 F) | 1983 | 39.3 C (102.7 F) | 45 |
| Coldest night (TNn) | -2.3 C (27.9 F) | 2005 | 0.2 C (32.4 F) | 45 |
| Wettest day (Rx1day) | 77.2 mm (3.0 in) | 1983 | 38.2 mm (1.5 in) | 45 |
| Wettest five days (Rx5day) | 136.2 mm (5.4 in) | 2011 | 64.8 mm (2.6 in) | 45 |
| Longest dry spell (CDD) | 40 days | 2014 | 20 days | 45 |
Hottest day (TXx)
| Year | Hottest day (TXx) |
|---|---|
| 1982 | 32.5 C (90.5 F) |
| 1983 | 43.1 C (109.6 F) |
| 1984 | 34.6 C (94.3 F) |
| 1985 | 40.8 C (105.4 F) |
| 1986 | 39.4 C (102.9 F) |
| 1987 | 36.4 C (97.5 F) |
| 1988 | 38.2 C (100.8 F) |
| 1989 | 37.8 C (100.0 F) |
| 1990 | 37.2 C (99.0 F) |
| 1991 | 39.6 C (103.3 F) |
| 1992 | 36.8 C (98.2 F) |
| 1993 | 38.8 C (101.8 F) |
| 1994 | 36.8 C (98.2 F) |
| 1995 | 38.2 C (100.8 F) |
| 1996 | 39.5 C (103.1 F) |
| 1997 | 41.1 C (106.0 F) |
| 1998 | 39.6 C (103.3 F) |
| 1999 | 38.9 C (102.0 F) |
| 2000 | 38.8 C (101.8 F) |
| 2001 | 39.5 C (103.1 F) |
| 2002 | 34.7 C (94.5 F) |
| 2003 | 37.5 C (99.5 F) |
| 2004 | 39.8 C (103.6 F) |
| 2005 | 39.7 C (103.5 F) |
| 2006 | 41.6 C (106.9 F) |
| 2007 | 38.2 C (100.8 F) |
| 2008 | 40.5 C (104.9 F) |
| 2009 | 39.3 C (102.7 F) |
| 2010 | 40.8 C (105.4 F) |
| 2011 | 35.4 C (95.7 F) |
| 2012 | 39.4 C (102.9 F) |
| 2013 | 42.1 C (107.8 F) |
| 2014 | 40.7 C (105.3 F) |
| 2015 | 39.9 C (103.8 F) |
| 2016 | 37.2 C (99.0 F) |
| 2017 | 36.9 C (98.4 F) |
| 2018 | 39.4 C (102.9 F) |
| 2019 | 39.5 C (103.1 F) |
| 2020 | 39.4 C (102.9 F) |
| 2021 | 38.9 C (102.0 F) |
| 2022 | 35.3 C (95.5 F) |
| 2023 | 36.2 C (97.2 F) |
| 2024 | 40.0 C (104.0 F) |
| 2025 | 37.2 C (99.0 F) |
| 2026 | 39.3 C (102.7 F) |
Coldest night (TNn)
| Year | Coldest night (TNn) |
|---|---|
| 1982 | -1.6 C (29.1 F) |
| 1983 | -0.4 C (31.3 F) |
| 1984 | -0.2 C (31.6 F) |
| 1985 | 0.5 C (32.9 F) |
| 1986 | 2.1 C (35.8 F) |
| 1987 | 1.2 C (34.2 F) |
| 1988 | 1.8 C (35.2 F) |
| 1989 | 0.2 C (32.4 F) |
| 1990 | 0.0 C (32.0 F) |
| 1991 | 1.2 C (34.2 F) |
| 1992 | 2.2 C (36.0 F) |
| 1993 | 1.2 C (34.2 F) |
| 1994 | -1.5 C (29.3 F) |
| 1995 | 0.5 C (32.9 F) |
| 1996 | -1.5 C (29.3 F) |
| 1997 | -0.7 C (30.7 F) |
| 1998 | 0.2 C (32.4 F) |
| 1999 | -0.3 C (31.5 F) |
| 2000 | 1.2 C (34.2 F) |
| 2001 | 1.3 C (34.3 F) |
| 2002 | 0.9 C (33.6 F) |
| 2003 | -0.6 C (30.9 F) |
| 2004 | 0.5 C (32.9 F) |
| 2005 | -2.3 C (27.9 F) |
| 2006 | -1.2 C (29.8 F) |
| 2007 | -0.5 C (31.1 F) |
| 2008 | -0.1 C (31.8 F) |
| 2009 | -1.5 C (29.3 F) |
| 2010 | 0.7 C (33.3 F) |
| 2011 | 0.9 C (33.6 F) |
| 2012 | -0.2 C (31.6 F) |
| 2013 | 0.7 C (33.3 F) |
| 2014 | 0.6 C (33.1 F) |
| 2015 | -1.0 C (30.2 F) |
| 2016 | 0.4 C (32.7 F) |
| 2017 | 0.0 C (32.0 F) |
| 2018 | 0.2 C (32.4 F) |
| 2019 | -0.7 C (30.7 F) |
| 2020 | 0.0 C (32.0 F) |
| 2021 | 0.1 C (32.2 F) |
| 2022 | -1.0 C (30.2 F) |
| 2023 | 2.0 C (35.6 F) |
| 2024 | -1.1 C (30.0 F) |
| 2025 | 0.3 C (32.5 F) |
| 2026 | 0.5 C (32.9 F) |
Wettest day (Rx1day)
| Year | Wettest day (Rx1day) |
|---|---|
| 1982 | 24.0 mm (0.9 in) |
| 1983 | 77.2 mm (3.0 in) |
| 1984 | 34.0 mm (1.3 in) |
| 1985 | 50.0 mm (2.0 in) |
| 1986 | 42.2 mm (1.7 in) |
| 1987 | 28.0 mm (1.1 in) |
| 1988 | 34.2 mm (1.3 in) |
| 1989 | 38.2 mm (1.5 in) |
| 1990 | 30.4 mm (1.2 in) |
| 1991 | 42.2 mm (1.7 in) |
| 1992 | 50.0 mm (2.0 in) |
| 1993 | 37.0 mm (1.5 in) |
| 1994 | 45.0 mm (1.8 in) |
| 1995 | 29.0 mm (1.1 in) |
| 1996 | 32.6 mm (1.3 in) |
| 1997 | 53.6 mm (2.1 in) |
| 1998 | 36.8 mm (1.4 in) |
| 1999 | 36.4 mm (1.4 in) |
| 2000 | 59.4 mm (2.3 in) |
| 2001 | 39.0 mm (1.5 in) |
| 2002 | 68.6 mm (2.7 in) |
| 2003 | 45.4 mm (1.8 in) |
| 2004 | 34.4 mm (1.4 in) |
| 2005 | 33.2 mm (1.3 in) |
| 2006 | 34.2 mm (1.3 in) |
| 2007 | 65.0 mm (2.6 in) |
| 2008 | 61.0 mm (2.4 in) |
| 2009 | 31.2 mm (1.2 in) |
| 2010 | 26.2 mm (1.0 in) |
| 2011 | 72.0 mm (2.8 in) |
| 2012 | 38.8 mm (1.5 in) |
| 2013 | 61.0 mm (2.4 in) |
| 2014 | 71.2 mm (2.8 in) |
| 2015 | 25.8 mm (1.0 in) |
| 2016 | 50.0 mm (2.0 in) |
| 2017 | 43.6 mm (1.7 in) |
| 2018 | 31.0 mm (1.2 in) |
| 2019 | 26.4 mm (1.0 in) |
| 2020 | 40.4 mm (1.6 in) |
| 2021 | 53.6 mm (2.1 in) |
| 2022 | 25.8 mm (1.0 in) |
| 2023 | 24.0 mm (0.9 in) |
| 2024 | 58.8 mm (2.3 in) |
| 2025 | 30.8 mm (1.2 in) |
| 2026 | 28.4 mm (1.1 in) |
Wettest five days (Rx5day)
| Year | Wettest five days (Rx5day) |
|---|---|
| 1982 | 40.2 mm (1.6 in) |
| 1983 | 131.6 mm (5.2 in) |
| 1984 | 56.4 mm (2.2 in) |
| 1985 | 66.0 mm (2.6 in) |
| 1986 | 62.8 mm (2.5 in) |
| 1987 | 50.4 mm (2.0 in) |
| 1988 | 65.8 mm (2.6 in) |
| 1989 | 63.6 mm (2.5 in) |
| 1990 | 62.8 mm (2.5 in) |
| 1991 | 79.6 mm (3.1 in) |
| 1992 | 69.4 mm (2.7 in) |
| 1993 | 64.4 mm (2.5 in) |
| 1994 | 56.0 mm (2.2 in) |
| 1995 | 52.2 mm (2.1 in) |
| 1996 | 74.0 mm (2.9 in) |
| 1997 | 62.0 mm (2.4 in) |
| 1998 | 51.2 mm (2.0 in) |
| 1999 | 48.2 mm (1.9 in) |
| 2000 | 101.4 mm (4.0 in) |
| 2001 | 62.6 mm (2.5 in) |
| 2002 | 72.0 mm (2.8 in) |
| 2003 | 84.4 mm (3.3 in) |
| 2004 | 68.0 mm (2.7 in) |
| 2005 | 70.2 mm (2.8 in) |
| 2006 | 38.8 mm (1.5 in) |
| 2007 | 93.4 mm (3.7 in) |
| 2008 | 69.8 mm (2.7 in) |
| 2009 | 63.6 mm (2.5 in) |
| 2010 | 53.4 mm (2.1 in) |
| 2011 | 136.2 mm (5.4 in) |
| 2012 | 62.8 mm (2.5 in) |
| 2013 | 90.4 mm (3.6 in) |
| 2014 | 89.6 mm (3.5 in) |
| 2015 | 57.8 mm (2.3 in) |
| 2016 | 70.2 mm (2.8 in) |
| 2017 | 63.4 mm (2.5 in) |
| 2018 | 72.6 mm (2.9 in) |
| 2019 | 51.8 mm (2.0 in) |
| 2020 | 89.0 mm (3.5 in) |
| 2021 | 78.4 mm (3.1 in) |
| 2022 | 51.4 mm (2.0 in) |
| 2023 | 44.2 mm (1.7 in) |
| 2024 | 77.4 mm (3.0 in) |
| 2025 | 69.4 mm (2.7 in) |
| 2026 | 64.8 mm (2.6 in) |
Longest dry spell (CDD)
| Year | Longest dry spell (CDD) |
|---|---|
| 1982 | 18 days |
| 1983 | 21 days |
| 1984 | 15 days |
| 1985 | 16 days |
| 1986 | 19 days |
| 1987 | 29 days |
| 1988 | 31 days |
| 1989 | 24 days |
| 1990 | 18 days |
| 1991 | 32 days |
| 1992 | 37 days |
| 1993 | 18 days |
| 1994 | 20 days |
| 1995 | 18 days |
| 1996 | 21 days |
| 1997 | 15 days |
| 1998 | 14 days |
| 1999 | 28 days |
| 2000 | 21 days |
| 2001 | 26 days |
| 2002 | 21 days |
| 2003 | 23 days |
| 2004 | 19 days |
| 2005 | 14 days |
| 2006 | 36 days |
| 2007 | 24 days |
| 2008 | 14 days |
| 2009 | 20 days |
| 2010 | 16 days |
| 2011 | 11 days |
| 2012 | 19 days |
| 2013 | 33 days |
| 2014 | 40 days |
| 2015 | 27 days |
| 2016 | 15 days |
| 2017 | 20 days |
| 2018 | 16 days |
| 2019 | 30 days |
| 2020 | 11 days |
| 2021 | 12 days |
| 2022 | 19 days |
| 2023 | 21 days |
| 2024 | 40 days |
| 2025 | 37 days |
| 2026 | 19 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.
Rainfall Return Levels
43 years, 1983 to 2025A day with at least 40.0 mm (1.6 in) of rain is expected about once in 2 years. A day with at least 94.4 mm (3.7 in) of rain is expected about once in 100 years.
| Expected about once in | A day with at least | Note |
|---|---|---|
| 2 years | 40.0 mm (1.6 in) | |
| 5 years | 53.2 mm (2.1 in) | |
| 10 years | 62.4 mm (2.5 in) | |
| 25 years | 74.8 mm (2.9 in) | |
| 50 years | 84.4 mm (3.3 in) | Longer than the 43 years of record |
| 100 years | 94.4 mm (3.7 in) | Longer than the 43 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, 43 years of values from 1983 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: 77.2 mm (3.0 in) in 1983; 72.0 mm (2.8 in) in 2011; 71.2 mm (2.8 in) in 2014.
Station Changes
1 suspectedOne change was suspected in the annual mean temperature of Portland (Cashmore Airport), at 1995. Each is measured against neighbouring stations.
- Relative to 5 neighbouring stations, the station's annual mean temperature from 1995 ran 0.2 C (0.3 F) lower than in the years before (likely change).
| Year | Shift (C) | Shift (F) | Strength | Neighbours |
|---|---|---|---|---|
| 1995 | -0.2 | -0.3 | likely | 5 |
Possible change at the station (a move, a new instrument or a new site); the record is kept as measured. A "likely" change has a larger test statistic than a "possible" one. Neither says why the station differs from its neighbours. How changes are found, and the largest ones.
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).