Detroit Dam Weather Records (USC00352292)
Record envelope, standing records and threshold days for Detroit Dam (USC00352292), Oregon, United States, with 73 years of record.
Key Facts for Detroit Dam
- Detroit Dam (USC00352292) is a weather station in Oregon, United States at 44.72 latitude and -122.25 longitude, 372 m (1,220 ft) above sea level.
- The station reports from 1954 to 2026, 73 years of record.
- 1,464 records set at Detroit Dam still stand.
- Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
- Detroit Dam set a daily record high minimum temperature of 13.3 C (55.9 F) on 3 October 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, 44.72 latitude, -122.25 longitude.
- Elevation: 372 m (1,220 ft).
- Period of record: 1954 to 2026, 73 years.
- Eligible elements: tmax, tmin, prcp, snow, snwd.
Daily Record Envelope and 2026
1 days at or beyond a record| Month | Highest record high | Lowest record low | 2026 highest maximum | 2026 lowest minimum |
|---|---|---|---|---|
| Jan | 19.4 C (66.9 F) | -12.8 C (9.0 F) | 15.0 C (59.0 F) | -2.2 C (28.0 F) |
| Feb | 23.9 C (75.0 F) | -13.9 C (7.0 F) | 12.2 C (54.0 F) | 0.0 C (32.0 F) |
| Mar | 24.4 C (75.9 F) | -8.9 C (16.0 F) | 24.4 C (75.9 F) | 0.6 C (33.1 F) |
| Apr | 30.6 C (87.1 F) | -4.4 C (24.1 F) | 23.9 C (75.0 F) | 0.6 C (33.1 F) |
| May | 40.0 C (104.0 F) | -2.8 C (27.0 F) | 29.4 C (84.9 F) | 3.9 C (39.0 F) |
| Jun | 43.9 C (111.0 F) | 2.2 C (36.0 F) | 32.8 C (91.0 F) | 6.7 C (44.1 F) |
| Jul | 40.0 C (104.0 F) | 4.4 C (39.9 F) | 33.3 C (91.9 F) | 10.0 C (50.0 F) |
| Aug | 40.6 C (105.1 F) | 4.4 C (39.9 F) | 32.8 C (91.0 F) | 10.0 C (50.0 F) |
| Sep | 41.7 C (107.1 F) | 1.7 C (35.1 F) | 28.9 C (84.0 F) | 7.8 C (46.0 F) |
| Oct | 33.3 C (91.9 F) | -3.9 C (25.0 F) | 26.7 C (80.1 F) | 5.0 C (41.0 F) |
| Nov | 23.3 C (73.9 F) | -11.7 C (10.9 F) | n/a | n/a |
| Dec | 18.9 C (66.0 F) | -13.9 C (7.0 F) | n/a | n/a |
Which Years Hold Standing Records
1,464 standing records| Year set | Standing records |
|---|---|
| 1954 | 6 |
| 1955 | 48 |
| 1956 | 34 |
| 1957 | 20 |
| 1958 | 19 |
| 1959 | 15 |
| 1960 | 25 |
| 1961 | 28 |
| 1962 | 26 |
| 1963 | 26 |
| 1964 | 23 |
| 1965 | 17 |
| 1966 | 16 |
| 1967 | 16 |
| 1968 | 21 |
| 1969 | 16 |
| 1970 | 38 |
| 1971 | 25 |
| 1972 | 41 |
| 1973 | 25 |
| 1974 | 31 |
| 1975 | 19 |
| 1976 | 16 |
| 1977 | 15 |
| 1978 | 25 |
| 1979 | 19 |
| 1980 | 28 |
| 1981 | 17 |
| 1982 | 15 |
| 1983 | 22 |
| 1984 | 13 |
| 1985 | 31 |
| 1986 | 15 |
| 1987 | 33 |
| 1988 | 20 |
| 1989 | 23 |
| 1990 | 24 |
| 1991 | 22 |
| 1992 | 23 |
| 1993 | 14 |
| 1994 | 17 |
| 1995 | 19 |
| 1996 | 19 |
| 1997 | 7 |
| 1998 | 7 |
| 1999 | 5 |
| 2000 | 9 |
| 2001 | 7 |
| 2002 | 19 |
| 2003 | 27 |
| 2004 | 9 |
| 2005 | 8 |
| 2006 | 20 |
| 2007 | 10 |
| 2008 | 36 |
| 2009 | 13 |
| 2010 | 7 |
| 2011 | 31 |
| 2012 | 22 |
| 2013 | 17 |
| 2014 | 12 |
| 2015 | 25 |
| 2016 | 22 |
| 2017 | 16 |
| 2018 | 20 |
| 2019 | 21 |
| 2020 | 13 |
| 2021 | 18 |
| 2022 | 26 |
| 2023 | 19 |
| 2024 | 14 |
| 2025 | 27 |
| 2026 | 12 |
All-Time Record Progression
10 new records| Date | Kind | Detail |
|---|---|---|
| 1988-09-03 | Record high maximum temperature | Record high maximum temperature 41.7 C (107.1 F) |
| 1989-02-03 | Record low minimum temperature | Record low minimum temperature -13.9 C (7.0 F) |
| 1989-02-04 | Record low maximum temperature | Record low maximum temperature -12.2 C (10.0 F) |
| 1990-04-28 | Record daily precipitation | Record daily precipitation 141.2 mm (5.6 in) |
| 2014-02-14 | Record daily precipitation | Record daily precipitation 148.6 mm (5.9 in) |
| 2014-08-12 | Record high minimum temperature | Record high minimum temperature 19.4 C (66.9 F) |
| 2018-08-09 | Record high minimum temperature | Record high minimum temperature 20.0 C (68.0 F) |
| 2021-02-13 | Record daily snowfall | Record daily snowfall 40.6 cm (16.0 in) |
| 2021-06-28 | Record high minimum temperature | Record high minimum temperature 21.7 C (71.1 F) |
| 2021-06-29 | Record high maximum temperature | Record high maximum temperature 43.9 C (111.0 F) |
Wettest Day of Each Month
Feb: 148.6 mm (5.9 in)| Month | Record daily precipitation (mm) | Date |
|---|---|---|
| Jan | 129.8 mm (5.1 in) | 21 January 1972 |
| Feb | 148.6 mm (5.9 in) | 14 February 2014 |
| Mar | 91.9 mm (3.6 in) | 2 March 1972 |
| Apr | 141.2 mm (5.6 in) | 28 April 1990 |
| May | 63.5 mm (2.5 in) | 15 May 2001 |
| Jun | 68.1 mm (2.7 in) | 8 June 1981 |
| Jul | 40.1 mm (1.6 in) | 18 July 2019 |
| Aug | 35.3 mm (1.4 in) | 21 August 2008 |
| Sep | 85.1 mm (3.4 in) | 30 September 2013 |
| Oct | 104.4 mm (4.1 in) | 16 October 2016 |
| Nov | 124.5 mm (4.9 in) | 24 November 1960 |
| Dec | 143.8 mm (5.7 in) | 19 December 2025 |
Period of Record Coverage
1954 to 2026| Year | Days with data | Share of year | Complete |
|---|---|---|---|
| 1954 | 44 | 12% | No |
| 1955 | 364 | 100% | Yes |
| 1956 | 365 | 100% | Yes |
| 1957 | 365 | 100% | Yes |
| 1958 | 365 | 100% | Yes |
| 1959 | 363 | 99% | Yes |
| 1960 | 366 | 100% | Yes |
| 1961 | 365 | 100% | Yes |
| 1962 | 365 | 100% | Yes |
| 1963 | 365 | 100% | Yes |
| 1964 | 366 | 100% | Yes |
| 1965 | 365 | 100% | Yes |
| 1966 | 365 | 100% | Yes |
| 1967 | 365 | 100% | Yes |
| 1968 | 365 | 100% | Yes |
| 1969 | 365 | 100% | Yes |
| 1970 | 365 | 100% | Yes |
| 1971 | 365 | 100% | Yes |
| 1972 | 366 | 100% | Yes |
| 1973 | 363 | 99% | Yes |
| 1974 | 365 | 100% | Yes |
| 1975 | 363 | 99% | Yes |
| 1976 | 365 | 100% | Yes |
| 1977 | 363 | 99% | Yes |
| 1978 | 365 | 100% | Yes |
| 1979 | 365 | 100% | Yes |
| 1980 | 365 | 100% | Yes |
| 1981 | 365 | 100% | Yes |
| 1982 | 364 | 100% | Yes |
| 1983 | 365 | 100% | Yes |
| 1984 | 365 | 100% | Yes |
| 1985 | 365 | 100% | Yes |
| 1986 | 359 | 98% | Yes |
| 1987 | 363 | 99% | Yes |
| 1988 | 365 | 100% | Yes |
| 1989 | 331 | 91% | Yes |
| 1990 | 364 | 100% | Yes |
| 1991 | 364 | 100% | Yes |
| 1992 | 366 | 100% | Yes |
| 1993 | 364 | 100% | Yes |
| 1994 | 365 | 100% | Yes |
| 1995 | 365 | 100% | Yes |
| 1996 | 366 | 100% | Yes |
| 1997 | 365 | 100% | Yes |
| 1998 | 364 | 100% | Yes |
| 1999 | 365 | 100% | Yes |
| 2000 | 363 | 99% | Yes |
| 2001 | 364 | 100% | Yes |
| 2002 | 364 | 100% | Yes |
| 2003 | 365 | 100% | Yes |
| 2004 | 366 | 100% | Yes |
| 2005 | 365 | 100% | Yes |
| 2006 | 363 | 99% | Yes |
| 2007 | 335 | 92% | Yes |
| 2008 | 360 | 98% | Yes |
| 2009 | 333 | 91% | Yes |
| 2010 | 334 | 92% | Yes |
| 2011 | 365 | 100% | Yes |
| 2012 | 366 | 100% | Yes |
| 2013 | 361 | 99% | Yes |
| 2014 | 364 | 100% | Yes |
| 2015 | 364 | 100% | Yes |
| 2016 | 366 | 100% | Yes |
| 2017 | 319 | 87% | No |
| 2018 | 342 | 94% | Yes |
| 2019 | 362 | 99% | Yes |
| 2020 | 364 | 99% | Yes |
| 2021 | 364 | 100% | Yes |
| 2022 | 365 | 100% | Yes |
| 2023 | 365 | 100% | Yes |
| 2024 | 366 | 100% | Yes |
| 2025 | 364 | 100% | Yes |
| 2026 | 285 | 78% | No |
Latest Records
20| Date | Station | Record | Value | Beat old record by | Old record stood | Significance |
|---|---|---|---|---|---|---|
| 3 October 2026 | Detroit Dam, US | daily high min (Provisional) | 13.3 C (55.9 F) | 0.5 C (0.9 F) | 45 years | 21 of 100 (Routine) |
| 14 September 2026 | Detroit Dam, US | daily low max (Tie, Provisional) | 12.8 C (55.0 F) | tie | 45 years | 5 of 100 (Routine) |
| 13 September 2026 | Detroit Dam, US | daily low max (Tie, Provisional) | 15.0 C (59.0 F) | tie | 40 years | 4 of 100 (Routine) |
| 7 September 2026 | Detroit Dam, US | daily low max (Provisional) | 13.9 C (57.0 F) | 0.5 C (0.9 F) | 48 years | 21 of 100 (Routine) |
| 22 July 2026 | Detroit Dam, US | daily high min | 20.0 C (68.0 F) | 1.1 C (2.0 F) | 45 years | 24 of 100 (Routine) |
| 21 July 2026 | Detroit Dam, US | daily high min | 18.3 C (64.9 F) | 1.1 C (2.0 F) | 55 years | 27 of 100 (Routine) |
| 28 June 2026 | Detroit Dam, US | daily rain | 31.2 mm (1.2 in) | 13.4 mm (0.5 in) | 56 years | 37 of 100 (Notable) |
| 28 June 2026 | Detroit Dam, US | daily low max | 11.7 C (53.1 F) | 1.1 C (2.0 F) | 56 years | 25 of 100 (Routine) |
| 15 June 2026 | Detroit Dam, US | daily high min | 15.6 C (60.1 F) | 0.6 C (1.1 F) | 64 years | 28 of 100 (Routine) |
| 17 May 2026 | Detroit Dam, US | daily low max | 8.3 C (46.9 F) | 0.6 C (1.1 F) | 65 years | 27 of 100 (Routine) |
| 4 May 2026 | Detroit Dam, US | daily high min (Tie) | 10.6 C (51.1 F) | tie | 8 years | 2 of 100 (Routine) |
| 11 April 2026 | Detroit Dam, US | daily high min | 9.4 C (48.9 F) | 1.1 C (2.0 F) | 33 years | 21 of 100 (Routine) |
| 2 April 2026 | Detroit Dam, US | daily rain | 39.1 mm (1.5 in) | 1.0 mm (0.04 in) | 16 years | 12 of 100 (Routine) |
| 25 March 2026 | Detroit Dam, US | daily high min | 7.8 C (46.0 F) | 1.1 C (2.0 F) | 48 years | 25 of 100 (Routine) |
| 21 March 2026 | Detroit Dam, US | daily high min | 7.2 C (45.0 F) | 0.5 C (0.9 F) | 1 year | 9 of 100 (Routine) |
| 20 March 2026 | Detroit Dam, US | monthly high max (Tie) | 24.4 C (75.9 F) | tie | 56 years | 8 of 100 (Routine) |
| 14 March 2026 | Detroit Dam, US | daily rain | 44.7 mm (1.8 in) | 2.8 mm (0.11 in) | 45 years | 22 of 100 (Routine) |
| 14 March 2026 | Detroit Dam, US | daily high min | 7.8 C (46.0 F) | 1.1 C (2.0 F) | 28 years | 19 of 100 (Routine) |
| 3 March 2026 | Detroit Dam, US | daily high min | 6.7 C (44.1 F) | 1.1 C (2.0 F) | 45 years | 24 of 100 (Routine) |
| 3 January 2026 | Detroit Dam, US | daily high min | 7.2 C (45.0 F) | 0.5 C (0.9 F) | 30 years | 17 of 100 (Routine) |
Climate Trend
65 complete years, 1955 to 2025| Year | Annual mean temperature | Difference from the station mean |
|---|---|---|
| 1955 | 9.1 C | -1.68 C |
| 1956 | 10.0 C | -0.79 C |
| 1957 | 10.3 C | -0.44 C |
| 1958 | 12.0 C | +1.26 C |
| 1959 | 10.7 C | -0.11 C |
| 1960 | 10.5 C | -0.27 C |
| 1961 | 11.0 C | +0.19 C |
| 1962 | 10.4 C | -0.40 C |
| 1963 | 10.5 C | -0.27 C |
| 1964 | 9.7 C | -1.10 C |
| 1965 | 10.9 C | +0.09 C |
| 1966 | 10.9 C | +0.13 C |
| 1967 | 11.4 C | +0.68 C |
| 1968 | 10.8 C | -0.01 C |
| 1969 | 10.5 C | -0.24 C |
| 1970 | 11.0 C | +0.19 C |
| 1971 | 9.6 C | -1.15 C |
| 1972 | 10.4 C | -0.40 C |
| 1973 | 10.4 C | -0.33 C |
| 1974 | 10.6 C | -0.12 C |
| 1975 | 10.0 C | -0.81 C |
| 1976 | 10.2 C | -0.53 C |
| 1977 | 10.6 C | -0.20 C |
| 1978 | 10.5 C | -0.23 C |
| 1979 | 10.7 C | -0.05 C |
| 1980 | 10.4 C | -0.36 C |
| 1981 | 10.6 C | -0.12 C |
| 1982 | 10.0 C | -0.78 C |
| 1983 | 10.5 C | -0.30 C |
| 1984 | 10.1 C | -0.67 C |
| 1985 | 9.8 C | -0.93 C |
| 1986 | 11.2 C | +0.48 C |
| 1987 | 11.6 C | +0.86 C |
| 1988 | 11.3 C | +0.55 C |
| 1990 | 10.8 C | +0.06 C |
| 1991 | 11.1 C | +0.34 C |
| 1992 | 12.2 C | +1.47 C |
| 1993 | 10.3 C | -0.47 C |
| 1994 | 10.8 C | +0.08 C |
| 1995 | 11.6 C | +0.86 C |
| 1996 | 10.9 C | +0.14 C |
| 1997 | 11.4 C | +0.64 C |
| 1998 | 11.4 C | +0.64 C |
| 1999 | 10.8 C | +0.01 C |
| 2000 | 10.9 C | +0.14 C |
| 2001 | 10.9 C | +0.10 C |
| 2002 | 10.9 C | +0.13 C |
| 2003 | 11.6 C | +0.82 C |
| 2004 | 11.6 C | +0.85 C |
| 2005 | 11.0 C | +0.22 C |
| 2006 | 10.8 C | +0.05 C |
| 2008 | 9.5 C | -1.24 C |
| 2011 | 9.1 C | -1.68 C |
| 2012 | 9.7 C | -1.02 C |
| 2013 | 9.9 C | -0.84 C |
| 2014 | 11.5 C | +0.70 C |
| 2015 | 12.5 C | +1.69 C |
| 2016 | 11.4 C | +0.68 C |
| 2019 | 11.1 C | +0.34 C |
| 2020 | 11.6 C | +0.81 C |
| 2021 | 11.4 C | +0.63 C |
| 2022 | 10.7 C | -0.05 C |
| 2023 | 11.1 C | +0.31 C |
| 2024 | 11.2 C | +0.40 C |
| 2025 | 11.7 C | +0.97 C |
The annual mean temperature here has risen by 0.11 C (0.03 to 0.19) per decade over 1955 to 2025. In Fahrenheit: 0.2 F (0.1 to 0.3) per decade. The slope is a straight line fitted to 65 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 (0.03 to 0.19) per decade | 0.2 F (0.1 to 0.3) per decade | 1955 to 2025 | 65 | Rise |
| Mean daily maximum | 0.13 C (0.03 to 0.22) per decade | 0.2 F (0.1 to 0.4) per decade | 1955 to 2025 | 65 | Rise |
| Mean daily minimum | 0.10 C (0.00 to 0.20) per decade | 0.18 F (0.01 to 0.35) per decade | 1955 to 2025 | 65 | 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
1954 to 2026| Measure | Record | Year of the record | Median year | Years with a value |
|---|---|---|---|---|
| Hottest day (TXx) | 43.9 C (111.0 F) | 2021 | 36.7 C (98.1 F) | 73 |
| Coldest night (TNn) | -13.9 C (7.0 F) | 1989 | -7.2 C (19.0 F) | 73 |
| Wettest day (Rx1day) | 148.6 mm (5.9 in) | 2014 | 87.6 mm (3.4 in) | 73 |
| Wettest five days (Rx5day) | 402.6 mm (15.9 in) | 1964 | 203.7 mm (8.0 in) | 73 |
| Longest dry spell (CDD) | 70 days | 2023 | 33 days | 73 |
Hottest day (TXx)
| Year | Hottest day (TXx) |
|---|---|
| 1954 | 18.9 C (66.0 F) |
| 1955 | 38.9 C (102.0 F) |
| 1956 | 38.9 C (102.0 F) |
| 1957 | 33.9 C (93.0 F) |
| 1958 | 38.9 C (102.0 F) |
| 1959 | 36.7 C (98.1 F) |
| 1960 | 38.3 C (100.9 F) |
| 1961 | 39.4 C (102.9 F) |
| 1962 | 34.4 C (93.9 F) |
| 1963 | 35.0 C (95.0 F) |
| 1964 | 32.2 C (90.0 F) |
| 1965 | 39.4 C (102.9 F) |
| 1966 | 36.1 C (97.0 F) |
| 1967 | 36.7 C (98.1 F) |
| 1968 | 37.8 C (100.0 F) |
| 1969 | 33.3 C (91.9 F) |
| 1970 | 40.6 C (105.1 F) |
| 1971 | 36.1 C (97.0 F) |
| 1972 | 40.0 C (104.0 F) |
| 1973 | 36.1 C (97.0 F) |
| 1974 | 34.4 C (93.9 F) |
| 1975 | 35.0 C (95.0 F) |
| 1976 | 31.1 C (88.0 F) |
| 1977 | 38.3 C (100.9 F) |
| 1978 | 37.2 C (99.0 F) |
| 1979 | 37.2 C (99.0 F) |
| 1980 | 34.4 C (93.9 F) |
| 1981 | 40.0 C (104.0 F) |
| 1982 | 36.1 C (97.0 F) |
| 1983 | 40.0 C (104.0 F) |
| 1984 | 35.6 C (96.1 F) |
| 1985 | 36.1 C (97.0 F) |
| 1986 | 35.0 C (95.0 F) |
| 1987 | 37.2 C (99.0 F) |
| 1988 | 41.7 C (107.1 F) |
| 1989 | 34.4 C (93.9 F) |
| 1990 | 37.2 C (99.0 F) |
| 1991 | 36.1 C (97.0 F) |
| 1992 | 39.4 C (102.9 F) |
| 1993 | 35.6 C (96.1 F) |
| 1994 | 37.8 C (100.0 F) |
| 1995 | 35.6 C (96.1 F) |
| 1996 | 36.7 C (98.1 F) |
| 1997 | 33.3 C (91.9 F) |
| 1998 | 37.2 C (99.0 F) |
| 1999 | 33.9 C (93.0 F) |
| 2000 | 35.0 C (95.0 F) |
| 2001 | 35.0 C (95.0 F) |
| 2002 | 40.0 C (104.0 F) |
| 2003 | 38.9 C (102.0 F) |
| 2004 | 40.0 C (104.0 F) |
| 2005 | 35.6 C (96.1 F) |
| 2006 | 39.4 C (102.9 F) |
| 2007 | 39.4 C (102.9 F) |
| 2008 | 38.9 C (102.0 F) |
| 2009 | 39.4 C (102.9 F) |
| 2010 | 37.2 C (99.0 F) |
| 2011 | 34.4 C (93.9 F) |
| 2012 | 37.8 C (100.0 F) |
| 2013 | 33.3 C (91.9 F) |
| 2014 | 35.0 C (95.0 F) |
| 2015 | 37.8 C (100.0 F) |
| 2016 | 36.1 C (97.0 F) |
| 2017 | 38.9 C (102.0 F) |
| 2018 | 36.1 C (97.0 F) |
| 2019 | 36.7 C (98.1 F) |
| 2020 | 38.9 C (102.0 F) |
| 2021 | 43.9 C (111.0 F) |
| 2022 | 36.7 C (98.1 F) |
| 2023 | 37.2 C (99.0 F) |
| 2024 | 36.7 C (98.1 F) |
| 2025 | 36.7 C (98.1 F) |
| 2026 | 33.3 C (91.9 F) |
Coldest night (TNn)
| Year | Coldest night (TNn) |
|---|---|
| 1954 | -5.6 C (21.9 F) |
| 1955 | -11.7 C (10.9 F) |
| 1956 | -11.7 C (10.9 F) |
| 1957 | -12.8 C (9.0 F) |
| 1958 | -2.8 C (27.0 F) |
| 1959 | -7.8 C (18.0 F) |
| 1960 | -7.2 C (19.0 F) |
| 1961 | -7.8 C (18.0 F) |
| 1962 | -10.6 C (12.9 F) |
| 1963 | -11.7 C (10.9 F) |
| 1964 | -12.8 C (9.0 F) |
| 1965 | -5.6 C (21.9 F) |
| 1966 | -4.4 C (24.1 F) |
| 1967 | -5.6 C (21.9 F) |
| 1968 | -10.6 C (12.9 F) |
| 1969 | -10.6 C (12.9 F) |
| 1970 | -5.6 C (21.9 F) |
| 1971 | -7.8 C (18.0 F) |
| 1972 | -12.2 C (10.0 F) |
| 1973 | -12.2 C (10.0 F) |
| 1974 | -10.0 C (14.0 F) |
| 1975 | -4.4 C (24.1 F) |
| 1976 | -5.6 C (21.9 F) |
| 1977 | -5.6 C (21.9 F) |
| 1978 | -11.1 C (12.0 F) |
| 1979 | -10.6 C (12.9 F) |
| 1980 | -11.1 C (12.0 F) |
| 1981 | -1.7 C (28.9 F) |
| 1982 | -7.2 C (19.0 F) |
| 1983 | -12.2 C (10.0 F) |
| 1984 | -7.2 C (19.0 F) |
| 1985 | -11.1 C (12.0 F) |
| 1986 | -1.1 C (30.0 F) |
| 1987 | -6.7 C (19.9 F) |
| 1988 | -6.7 C (19.9 F) |
| 1989 | -13.9 C (7.0 F) |
| 1990 | -13.9 C (7.0 F) |
| 1991 | -5.6 C (21.9 F) |
| 1992 | -3.9 C (25.0 F) |
| 1993 | -8.3 C (17.1 F) |
| 1994 | -4.4 C (24.1 F) |
| 1995 | -5.6 C (21.9 F) |
| 1996 | -10.0 C (14.0 F) |
| 1997 | -4.4 C (24.1 F) |
| 1998 | -11.7 C (10.9 F) |
| 1999 | -1.7 C (28.9 F) |
| 2000 | -1.7 C (28.9 F) |
| 2001 | -2.2 C (28.0 F) |
| 2002 | -3.9 C (25.0 F) |
| 2003 | -5.6 C (21.9 F) |
| 2004 | -7.8 C (18.0 F) |
| 2005 | -7.8 C (18.0 F) |
| 2006 | -7.8 C (18.0 F) |
| 2007 | -8.3 C (17.1 F) |
| 2008 | -11.1 C (12.0 F) |
| 2009 | -12.8 C (9.0 F) |
| 2010 | -7.8 C (18.0 F) |
| 2011 | -12.2 C (10.0 F) |
| 2012 | -4.4 C (24.1 F) |
| 2013 | -9.4 C (15.1 F) |
| 2014 | -7.2 C (19.0 F) |
| 2015 | -7.2 C (19.0 F) |
| 2016 | -5.0 C (23.0 F) |
| 2017 | -10.0 C (14.0 F) |
| 2018 | -2.8 C (27.0 F) |
| 2019 | -5.0 C (23.0 F) |
| 2020 | -2.2 C (28.0 F) |
| 2021 | -5.0 C (23.0 F) |
| 2022 | -6.1 C (21.0 F) |
| 2023 | -6.1 C (21.0 F) |
| 2024 | -9.4 C (15.1 F) |
| 2025 | -6.7 C (19.9 F) |
| 2026 | -2.2 C (28.0 F) |
Wettest day (Rx1day)
| Year | Wettest day (Rx1day) |
|---|---|
| 1954 | 49.3 mm (1.9 in) |
| 1955 | 102.4 mm (4.0 in) |
| 1956 | 90.7 mm (3.6 in) |
| 1957 | 98.0 mm (3.9 in) |
| 1958 | 97.5 mm (3.8 in) |
| 1959 | 78.7 mm (3.1 in) |
| 1960 | 124.5 mm (4.9 in) |
| 1961 | 114.3 mm (4.5 in) |
| 1962 | 82.8 mm (3.3 in) |
| 1963 | 100.3 mm (3.9 in) |
| 1964 | 137.4 mm (5.4 in) |
| 1965 | 119.9 mm (4.7 in) |
| 1966 | 88.6 mm (3.5 in) |
| 1967 | 68.1 mm (2.7 in) |
| 1968 | 69.3 mm (2.7 in) |
| 1969 | 73.7 mm (2.9 in) |
| 1970 | 73.9 mm (2.9 in) |
| 1971 | 87.6 mm (3.4 in) |
| 1972 | 129.8 mm (5.1 in) |
| 1973 | 68.1 mm (2.7 in) |
| 1974 | 102.4 mm (4.0 in) |
| 1975 | 88.9 mm (3.5 in) |
| 1976 | 64.8 mm (2.6 in) |
| 1977 | 91.4 mm (3.6 in) |
| 1978 | 53.3 mm (2.1 in) |
| 1979 | 66.5 mm (2.6 in) |
| 1980 | 87.1 mm (3.4 in) |
| 1981 | 114.3 mm (4.5 in) |
| 1982 | 82.6 mm (3.3 in) |
| 1983 | 87.4 mm (3.4 in) |
| 1984 | 108.5 mm (4.3 in) |
| 1985 | 73.9 mm (2.9 in) |
| 1986 | 82.6 mm (3.3 in) |
| 1987 | 90.7 mm (3.6 in) |
| 1988 | 83.8 mm (3.3 in) |
| 1989 | 107.7 mm (4.2 in) |
| 1990 | 141.2 mm (5.6 in) |
| 1991 | 73.9 mm (2.9 in) |
| 1992 | 82.6 mm (3.3 in) |
| 1993 | 70.1 mm (2.8 in) |
| 1994 | 101.3 mm (4.0 in) |
| 1995 | 87.4 mm (3.4 in) |
| 1996 | 121.9 mm (4.8 in) |
| 1997 | 80.3 mm (3.2 in) |
| 1998 | 128.3 mm (5.1 in) |
| 1999 | 114.6 mm (4.5 in) |
| 2000 | 80.8 mm (3.2 in) |
| 2001 | 93.7 mm (3.7 in) |
| 2002 | 78.2 mm (3.1 in) |
| 2003 | 95.5 mm (3.8 in) |
| 2004 | 60.5 mm (2.4 in) |
| 2005 | 86.6 mm (3.4 in) |
| 2006 | 92.2 mm (3.6 in) |
| 2007 | 90.2 mm (3.6 in) |
| 2008 | 65.3 mm (2.6 in) |
| 2009 | 66.0 mm (2.6 in) |
| 2010 | 62.2 mm (2.4 in) |
| 2011 | 98.8 mm (3.9 in) |
| 2012 | 129.5 mm (5.1 in) |
| 2013 | 85.1 mm (3.4 in) |
| 2014 | 148.6 mm (5.9 in) |
| 2015 | 120.9 mm (4.8 in) |
| 2016 | 104.4 mm (4.1 in) |
| 2017 | 91.9 mm (3.6 in) |
| 2018 | 62.7 mm (2.5 in) |
| 2019 | 82.6 mm (3.3 in) |
| 2020 | 65.3 mm (2.6 in) |
| 2021 | 95.0 mm (3.7 in) |
| 2022 | 96.0 mm (3.8 in) |
| 2023 | 73.9 mm (2.9 in) |
| 2024 | 84.1 mm (3.3 in) |
| 2025 | 143.8 mm (5.7 in) |
| 2026 | 51.6 mm (2.0 in) |
Wettest five days (Rx5day)
| Year | Wettest five days (Rx5day) |
|---|---|
| 1954 | 115.6 mm (4.6 in) |
| 1955 | 286.8 mm (11.3 in) |
| 1956 | 195.1 mm (7.7 in) |
| 1957 | 242.0 mm (9.5 in) |
| 1958 | 179.7 mm (7.1 in) |
| 1959 | 166.6 mm (6.6 in) |
| 1960 | 287.3 mm (11.3 in) |
| 1961 | 276.4 mm (10.9 in) |
| 1962 | 168.2 mm (6.6 in) |
| 1963 | 182.1 mm (7.2 in) |
| 1964 | 402.6 mm (15.9 in) |
| 1965 | 257.6 mm (10.1 in) |
| 1966 | 264.8 mm (10.4 in) |
| 1967 | 169.2 mm (6.7 in) |
| 1968 | 207.2 mm (8.2 in) |
| 1969 | 177.1 mm (7.0 in) |
| 1970 | 228.0 mm (9.0 in) |
| 1971 | 214.3 mm (8.4 in) |
| 1972 | 290.6 mm (11.4 in) |
| 1973 | 201.4 mm (7.9 in) |
| 1974 | 333.5 mm (13.1 in) |
| 1975 | 196.1 mm (7.7 in) |
| 1976 | 170.3 mm (6.7 in) |
| 1977 | 273.9 mm (10.8 in) |
| 1978 | 141.4 mm (5.6 in) |
| 1979 | 148.8 mm (5.9 in) |
| 1980 | 197.4 mm (7.8 in) |
| 1981 | 223.3 mm (8.8 in) |
| 1982 | 216.3 mm (8.5 in) |
| 1983 | 244.9 mm (9.6 in) |
| 1984 | 190.7 mm (7.5 in) |
| 1985 | 184.9 mm (7.3 in) |
| 1986 | 195.6 mm (7.7 in) |
| 1987 | 177.6 mm (7.0 in) |
| 1988 | 231.2 mm (9.1 in) |
| 1989 | 159.8 mm (6.3 in) |
| 1990 | 228.8 mm (9.0 in) |
| 1991 | 162.9 mm (6.4 in) |
| 1992 | 170.2 mm (6.7 in) |
| 1993 | 175.2 mm (6.9 in) |
| 1994 | 222.7 mm (8.8 in) |
| 1995 | 204.5 mm (8.1 in) |
| 1996 | 348.3 mm (13.7 in) |
| 1997 | 244.4 mm (9.6 in) |
| 1998 | 282.2 mm (11.1 in) |
| 1999 | 249.7 mm (9.8 in) |
| 2000 | 185.5 mm (7.3 in) |
| 2001 | 210.3 mm (8.3 in) |
| 2002 | 189.2 mm (7.4 in) |
| 2003 | 203.7 mm (8.0 in) |
| 2004 | 147.6 mm (5.8 in) |
| 2005 | 259.0 mm (10.2 in) |
| 2006 | 274.2 mm (10.8 in) |
| 2007 | 199.9 mm (7.9 in) |
| 2008 | 181.2 mm (7.1 in) |
| 2009 | 160.5 mm (6.3 in) |
| 2010 | 180.6 mm (7.1 in) |
| 2011 | 272.7 mm (10.7 in) |
| 2012 | 297.6 mm (11.7 in) |
| 2013 | 198.7 mm (7.8 in) |
| 2014 | 336.3 mm (13.2 in) |
| 2015 | 207.7 mm (8.2 in) |
| 2016 | 394.5 mm (15.5 in) |
| 2017 | 220.7 mm (8.7 in) |
| 2018 | 152.8 mm (6.0 in) |
| 2019 | 254.2 mm (10.0 in) |
| 2020 | 168.6 mm (6.6 in) |
| 2021 | 160.3 mm (6.3 in) |
| 2022 | 205.3 mm (8.1 in) |
| 2023 | 182.4 mm (7.2 in) |
| 2024 | 183.9 mm (7.2 in) |
| 2025 | 217.5 mm (8.6 in) |
| 2026 | 118.6 mm (4.7 in) |
Longest dry spell (CDD)
| Year | Longest dry spell (CDD) |
|---|---|
| 1954 | 5 days |
| 1955 | 48 days |
| 1956 | 22 days |
| 1957 | 39 days |
| 1958 | 59 days |
| 1959 | 34 days |
| 1960 | 55 days |
| 1961 | 29 days |
| 1962 | 37 days |
| 1963 | 20 days |
| 1964 | 15 days |
| 1965 | 25 days |
| 1966 | 42 days |
| 1967 | 66 days |
| 1968 | 24 days |
| 1969 | 32 days |
| 1970 | 34 days |
| 1971 | 20 days |
| 1972 | 52 days |
| 1973 | 58 days |
| 1974 | 32 days |
| 1975 | 32 days |
| 1976 | 25 days |
| 1977 | 36 days |
| 1978 | 19 days |
| 1979 | 34 days |
| 1980 | 43 days |
| 1981 | 47 days |
| 1982 | 26 days |
| 1983 | 14 days |
| 1984 | 61 days |
| 1985 | 52 days |
| 1986 | 43 days |
| 1987 | 34 days |
| 1988 | 64 days |
| 1989 | 23 days |
| 1990 | 24 days |
| 1991 | 32 days |
| 1992 | 22 days |
| 1993 | 43 days |
| 1994 | 45 days |
| 1995 | 27 days |
| 1996 | 21 days |
| 1997 | 40 days |
| 1998 | 30 days |
| 1999 | 23 days |
| 2000 | 43 days |
| 2001 | 33 days |
| 2002 | 32 days |
| 2003 | 23 days |
| 2004 | 28 days |
| 2005 | 36 days |
| 2006 | 25 days |
| 2007 | 28 days |
| 2008 | 29 days |
| 2009 | 21 days |
| 2010 | 58 days |
| 2011 | 59 days |
| 2012 | 35 days |
| 2013 | 27 days |
| 2014 | 20 days |
| 2015 | 17 days |
| 2016 | 28 days |
| 2017 | 57 days |
| 2018 | 54 days |
| 2019 | 30 days |
| 2020 | 44 days |
| 2021 | 52 days |
| 2022 | 33 days |
| 2023 | 70 days |
| 2024 | 32 days |
| 2025 | 45 days |
| 2026 | 41 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
64 years with a frostAcross 64 years with a frost, the median last spring frost at Detroit Dam falls on 29 March and the median first autumn frost on 25 November, which leaves a median of 240 days between them.
In 1990 to 2024 the median growing season was 252 days. That is 14 days more than in 1955 to 1984.
Fitted over all years, the growing season changes by +0.3 days per decade at this station.
| Measure | Median, all years | Earliest period (1955 to 1984) | Recent period (1990 to 2024) | Recent against earliest | Fitted trend |
|---|---|---|---|---|---|
| Last spring frost | 29 March | 7 April | 26 March | 12 days earlier | -0.4 days per decade |
| First autumn frost | 25 November | 23 November | 23 November | no change | -0.1 days per decade |
| Growing days | 240 days | 238 days | 252 days | 14 days more | +0.3 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
70 years, 1955 to 2025A day with at least 88.8 mm (3.5 in) of rain is expected about once in 2 years. A day with at least 161.5 mm (6.4 in) of rain is expected about once in 100 years.
| Expected about once in | A day with at least | Note |
|---|---|---|
| 2 years | 88.8 mm (3.5 in) | |
| 5 years | 109.0 mm (4.3 in) | |
| 10 years | 122.1 mm (4.8 in) | |
| 25 years | 138.3 mm (5.4 in) | |
| 50 years | 150.0 mm (5.9 in) | |
| 100 years | 161.5 mm (6.4 in) | Longer than the 70 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, 70 years of values from 1955 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: 148.6 mm (5.9 in) in 2014; 143.8 mm (5.7 in) in 2025; 141.2 mm (5.6 in) in 1990.
Station Changes
1 suspectedOne change was suspected in the annual mean temperature of Detroit Dam, at 2011. Each is measured against neighbouring stations.
- Relative to 5 neighbouring stations, the station's annual mean temperature from 2011 ran 0.2 C (0.4 F) lower than in the years before (possible change).
| Year | Shift (C) | Shift (F) | Strength | Neighbours |
|---|---|---|---|---|
| 2011 | -0.2 | -0.4 | possible | 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.
Climate Twins
2006 to 2025 against 1961 to 1990Over 2006 to 2025, Detroit Dam had a mean temperature of 10.9 C (51.6 F) and 2,349.8 mm (92.5 in) of rain a year. The 3 stations whose 1961 to 1990 climate was closest to that are Cushman Powerhouse #2 (United States, 302 km away), Strawberry Valley 2 (United States, 584 km away) and Pitt Polder (Canada, 508 km away).
| Twin station | Country | Distance away | Mean temperature, 1961-1990 | Rain a year, 1961-1990 | Climate difference |
|---|---|---|---|---|---|
| Cushman Powerhouse #2 | United States | 302 km (188 mi) | 10.7 C (51.2 F) | 2,175.0 mm (85.6 in) | 1.41 |
| Strawberry Valley 2 | United States | 584 km (363 mi) | 10.9 C (51.7 F) | 1,985.4 mm (78.2 in) | 1.58 |
| Pitt Polder | Canada | 508 km (316 mi) | 9.5 C (49.1 F) | 2,375.6 mm (93.5 in) | 1.71 |
Twins are stations, not cities. A twin is one of the three stations at least 100 km away whose earlier climate is closest to this station's recent one, so a close match does not mean the two places look alike in other ways. A station move or a gap in a record can change that station's averages. The list describes past climate; it is not a forecast and does not say what caused any change. How twins are found, and a search for any station.
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 2026-10-14 (14 October 2026). Records are computed by this site and are not official.
Data as of . Last revised (2026-10-14).