Port Huron Weather Records (USC00206680)
Record envelope, standing records and threshold days for Port Huron (USC00206680), Michigan, United States, with 94 years of record.
Key Facts for Port Huron
- Port Huron (USC00206680) is a weather station in Michigan, United States at 42.98 latitude and -82.42 longitude, 180 m (590 ft) above sea level.
- The station reports from 1933 to 2026, 94 years of record.
- 1,464 records set at Port Huron still stand.
- Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
- Port Huron set a daily record low maximum temperature of 21.1 C (70.0 F) on 2 August 2026.
About the Station
- Location: Michigan, United States, 42.98 latitude, -82.42 longitude.
- Elevation: 180 m (590 ft).
- Period of record: 1933 to 2026, 94 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 | 17.8 C (64.0 F) | -28.3 C (-18.9 F) | 13.9 C (57.0 F) | -20.0 C (-4.0 F) |
| Feb | 20.6 C (69.1 F) | -26.1 C (-15.0 F) | 9.4 C (48.9 F) | -16.1 C (3.0 F) |
| Mar | 27.8 C (82.0 F) | -21.7 C (-7.1 F) | 22.8 C (73.0 F) | -11.1 C (12.0 F) |
| Apr | 30.6 C (87.1 F) | -13.3 C (8.1 F) | 25.6 C (78.1 F) | -5.6 C (21.9 F) |
| May | 35.6 C (96.1 F) | -6.1 C (21.0 F) | 28.9 C (84.0 F) | -1.1 C (30.0 F) |
| Jun | 38.9 C (102.0 F) | 0.0 C (32.0 F) | 33.9 C (93.0 F) | 7.2 C (45.0 F) |
| Jul | 39.4 C (102.9 F) | 1.7 C (35.1 F) | 36.1 C (97.0 F) | 11.1 C (52.0 F) |
| Aug | 38.9 C (102.0 F) | 2.8 C (37.0 F) | 30.0 C (86.0 F) | 11.7 C (53.1 F) |
| Sep | 38.3 C (100.9 F) | -3.9 C (25.0 F) | 32.8 C (91.0 F) | 6.1 C (43.0 F) |
| Oct | 32.2 C (90.0 F) | -6.7 C (19.9 F) | 23.9 C (75.0 F) | 2.8 C (37.0 F) |
| Nov | 27.2 C (81.0 F) | -16.7 C (1.9 F) | n/a | n/a |
| Dec | 18.9 C (66.0 F) | -21.7 C (-7.1 F) | n/a | n/a |
Which Years Hold Standing Records
1,464 standing records| Year set | Standing records |
|---|---|
| 1933 | 21 |
| 1934 | 32 |
| 1935 | 22 |
| 1936 | 21 |
| 1937 | 18 |
| 1938 | 13 |
| 1939 | 8 |
| 1940 | 25 |
| 1941 | 29 |
| 1942 | 20 |
| 1943 | 24 |
| 1944 | 19 |
| 1945 | 34 |
| 1946 | 10 |
| 1947 | 4 |
| 1948 | 18 |
| 1949 | 26 |
| 1950 | 31 |
| 1951 | 22 |
| 1952 | 20 |
| 1953 | 25 |
| 1954 | 12 |
| 1955 | 21 |
| 1956 | 10 |
| 1957 | 11 |
| 1958 | 13 |
| 1959 | 14 |
| 1960 | 6 |
| 1961 | 8 |
| 1962 | 18 |
| 1963 | 22 |
| 1964 | 26 |
| 1965 | 14 |
| 1966 | 15 |
| 1967 | 14 |
| 1968 | 14 |
| 1969 | 5 |
| 1970 | 7 |
| 1971 | 8 |
| 1972 | 22 |
| 1973 | 15 |
| 1974 | 15 |
| 1975 | 12 |
| 1976 | 26 |
| 1977 | 27 |
| 1978 | 4 |
| 1979 | 24 |
| 1980 | 6 |
| 1981 | 12 |
| 1982 | 25 |
| 1983 | 12 |
| 1984 | 13 |
| 1985 | 12 |
| 1986 | 16 |
| 1987 | 11 |
| 1988 | 26 |
| 1989 | 20 |
| 1990 | 23 |
| 1991 | 22 |
| 1992 | 10 |
| 1993 | 3 |
| 1994 | 11 |
| 1995 | 13 |
| 1996 | 13 |
| 1997 | 8 |
| 1998 | 13 |
| 1999 | 16 |
| 2000 | 19 |
| 2001 | 11 |
| 2002 | 18 |
| 2003 | 5 |
| 2004 | 15 |
| 2005 | 13 |
| 2006 | 12 |
| 2007 | 11 |
| 2008 | 7 |
| 2009 | 4 |
| 2010 | 9 |
| 2011 | 8 |
| 2012 | 15 |
| 2013 | 12 |
| 2014 | 20 |
| 2015 | 30 |
| 2016 | 29 |
| 2017 | 22 |
| 2018 | 14 |
| 2019 | 10 |
| 2020 | 8 |
| 2021 | 14 |
| 2022 | 7 |
| 2023 | 9 |
| 2024 | 14 |
| 2025 | 12 |
| 2026 | 6 |
All-Time Record Progression
6 new records| Date | Kind | Detail |
|---|---|---|
| 1972-01-15 | Record low maximum temperature | Record low maximum temperature -19.4 C (-2.9 F) |
| 1994-01-19 | Record low minimum temperature | Record low minimum temperature -28.3 C (-18.9 F) |
| 1994-07-22 | Record daily precipitation | Record daily precipitation 94.5 mm (3.7 in) |
| 1996-09-07 | Record daily precipitation | Record daily precipitation 100.8 mm (4.0 in) |
| 2000-12-14 | Record snow depth | Record snow depth 55.9 cm (22.0 in) |
| 2006-08-01 | Record high minimum temperature | Record high minimum temperature 26.7 C (80.1 F) |
Wettest Day of Each Month
Sep: 100.8 mm (4.0 in)| Month | Record daily precipitation (mm) | Date |
|---|---|---|
| Jan | 66.0 mm (2.6 in) | 11 January 2020 |
| Feb | 45.7 mm (1.8 in) | 11 February 2009 |
| Mar | 51.8 mm (2.0 in) | 26 March 2021 |
| Apr | 58.7 mm (2.3 in) | 2 April 2025 |
| May | 86.1 mm (3.4 in) | 11 May 1943 |
| Jun | 75.7 mm (3.0 in) | 2 June 1951 |
| Jul | 94.5 mm (3.7 in) | 22 July 1994 |
| Aug | 77.2 mm (3.0 in) | 4 August 1940 |
| Sep | 100.8 mm (4.0 in) | 7 September 1996 |
| Oct | 72.9 mm (2.9 in) | 5 October 1995 |
| Nov | 77.7 mm (3.1 in) | 25 November 1950 |
| Dec | 50.8 mm (2.0 in) | 25 December 1965 |
Period of Record Coverage
1933 to 2026| Year | Days with data | Share of year | Complete |
|---|---|---|---|
| 1933 | 177 | 48% | No |
| 1934 | 352 | 96% | Yes |
| 1935 | 241 | 66% | No |
| 1936 | 229 | 63% | No |
| 1937 | 307 | 84% | No |
| 1938 | 336 | 92% | Yes |
| 1939 | 249 | 68% | No |
| 1940 | 331 | 90% | Yes |
| 1941 | 364 | 100% | Yes |
| 1942 | 363 | 99% | Yes |
| 1943 | 363 | 99% | Yes |
| 1944 | 361 | 99% | Yes |
| 1945 | 361 | 99% | Yes |
| 1946 | 326 | 89% | No |
| 1947 | 92 | 25% | No |
| 1948 | 355 | 97% | Yes |
| 1949 | 355 | 97% | Yes |
| 1950 | 360 | 99% | Yes |
| 1951 | 359 | 98% | Yes |
| 1952 | 356 | 97% | Yes |
| 1953 | 362 | 99% | Yes |
| 1954 | 363 | 99% | Yes |
| 1955 | 364 | 100% | Yes |
| 1956 | 366 | 100% | Yes |
| 1957 | 363 | 99% | Yes |
| 1958 | 365 | 100% | Yes |
| 1959 | 365 | 100% | Yes |
| 1960 | 365 | 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 | 366 | 100% | Yes |
| 1969 | 364 | 100% | Yes |
| 1970 | 365 | 100% | Yes |
| 1971 | 365 | 100% | Yes |
| 1972 | 365 | 100% | Yes |
| 1973 | 365 | 100% | Yes |
| 1974 | 362 | 99% | Yes |
| 1975 | 363 | 99% | Yes |
| 1976 | 347 | 95% | Yes |
| 1977 | 355 | 97% | Yes |
| 1978 | 355 | 97% | Yes |
| 1979 | 362 | 99% | Yes |
| 1980 | 364 | 99% | Yes |
| 1981 | 363 | 99% | Yes |
| 1982 | 359 | 98% | Yes |
| 1983 | 355 | 97% | Yes |
| 1984 | 361 | 99% | Yes |
| 1985 | 357 | 98% | Yes |
| 1986 | 362 | 99% | Yes |
| 1987 | 363 | 99% | Yes |
| 1988 | 366 | 100% | Yes |
| 1989 | 365 | 100% | Yes |
| 1990 | 365 | 100% | Yes |
| 1991 | 365 | 100% | Yes |
| 1992 | 366 | 100% | Yes |
| 1993 | 362 | 99% | Yes |
| 1994 | 364 | 100% | Yes |
| 1995 | 361 | 99% | Yes |
| 1996 | 363 | 99% | Yes |
| 1997 | 364 | 100% | Yes |
| 1998 | 362 | 99% | Yes |
| 1999 | 299 | 82% | No |
| 2000 | 363 | 99% | Yes |
| 2001 | 361 | 99% | Yes |
| 2002 | 364 | 100% | Yes |
| 2003 | 363 | 99% | Yes |
| 2004 | 366 | 100% | Yes |
| 2005 | 364 | 100% | Yes |
| 2006 | 342 | 94% | Yes |
| 2007 | 356 | 98% | Yes |
| 2008 | 362 | 99% | Yes |
| 2009 | 364 | 100% | Yes |
| 2010 | 363 | 99% | Yes |
| 2011 | 365 | 100% | Yes |
| 2012 | 366 | 100% | Yes |
| 2013 | 362 | 99% | Yes |
| 2014 | 324 | 89% | No |
| 2015 | 357 | 98% | Yes |
| 2016 | 345 | 94% | Yes |
| 2017 | 351 | 96% | Yes |
| 2018 | 364 | 100% | Yes |
| 2019 | 365 | 100% | Yes |
| 2020 | 366 | 100% | Yes |
| 2021 | 365 | 100% | Yes |
| 2022 | 365 | 100% | Yes |
| 2023 | 365 | 100% | Yes |
| 2024 | 365 | 100% | Yes |
| 2025 | 365 | 100% | Yes |
| 2026 | 253 | 69% | No |
Latest Records
20| Date | Station | Record | Value | Beat old record by | Old record stood | Significance |
|---|---|---|---|---|---|---|
| 2 August 2026 | Port Huron, US | daily low max | 21.1 C (70.0 F) | 1.1 C (2.0 F) | 69 years | 31 of 100 (Routine) |
| 5 July 2026 | Port Huron, US | daily rain | 49.5 mm (1.9 in) | 22.3 mm (0.9 in) | 8 years | 31 of 100 (Routine) |
| 2 July 2026 | Port Huron, US | daily high min | 23.9 C (75.0 F) | 1.1 C (2.0 F) | 68 years | 32 of 100 (Routine) |
| 1 July 2026 | Port Huron, US | daily high min | 25.0 C (77.0 F) | 1.7 C (3.1 F) | 57 years | 31 of 100 (Routine) |
| 18 May 2026 | Port Huron, US | daily high min | 18.9 C (66.0 F) | 2.2 C (4.0 F) | 68 years | 34 of 100 (Routine) |
| 13 April 2026 | Port Huron, US | daily high min | 16.1 C (61.0 F) | 0.5 C (0.9 F) | 3 years | 10 of 100 (Routine) |
| 4 April 2026 | Port Huron, US | daily rain | 45.5 mm (1.8 in) | 4.9 mm (0.19 in) | 76 years | 37 of 100 (Notable) |
| 23 January 2026 | Port Huron, US | daily low min | -20.0 C (-4.0 F) | 0.6 C (1.1 F) | 78 years | 33 of 100 (Routine) |
| 14 January 2026 | Port Huron, US | daily rain | 48.3 mm (1.9 in) | 13.2 mm (0.5 in) | 34 years | 39 of 100 (Notable) |
| 6 January 2026 | Port Huron, US | daily rain | 15.7 mm (0.6 in) | 6.6 mm (0.26 in) | 64 years | 20 of 100 (Routine) |
| 28 December 2025 | Port Huron, US | daily rain | 41.1 mm (1.6 in) | 12.7 mm (0.5 in) | 66 years | 48 of 100 (Notable) |
| 26 December 2025 | Port Huron, US | daily rain | 24.1 mm (0.9 in) | 1.0 mm (0.04 in) | 68 years | 20 of 100 (Routine) |
| 4 October 2025 | Port Huron, US | daily high max (Tie) | 30.0 C (86.0 F) | tie | 74 years | 7 of 100 (Routine) |
| 4 September 2025 | Port Huron, US | daily low max | 17.8 C (64.0 F) | 0.5 C (0.9 F) | 62 years | 28 of 100 (Routine) |
| 31 August 2025 | Port Huron, US | daily low min (Tie) | 8.9 C (48.0 F) | tie | 48 years | 5 of 100 (Routine) |
| 12 August 2025 | Port Huron, US | daily rain | 28.7 mm (1.1 in) | 11.9 mm (0.5 in) | 35 years | 29 of 100 (Routine) |
| 27 July 2025 | Port Huron, US | daily high min (Tie) | 22.8 C (73.0 F) | tie | 70 years | 7 of 100 (Routine) |
| 21 July 2025 | Port Huron, US | daily low max | 21.1 C (70.0 F) | 0.6 C (1.1 F) | 55 years | 26 of 100 (Routine) |
| 23 June 2025 | Port Huron, US | daily high min | 23.9 C (75.0 F) | 2.8 C (5.0 F) | 50 years | 30 of 100 (Routine) |
| 23 June 2025 | Port Huron, US | daily high max | 35.0 C (95.0 F) | 1.1 C (2.0 F) | 23 years | 17 of 100 (Routine) |
Climate Trend
78 complete years, 1934 to 2025| Year | Annual mean temperature | Difference from the station mean |
|---|---|---|
| 1934 | 9.0 C | -0.30 C |
| 1941 | 8.9 C | -0.40 C |
| 1943 | 7.6 C | -1.63 C |
| 1944 | 8.6 C | -0.71 C |
| 1945 | 7.9 C | -1.36 C |
| 1948 | 9.1 C | -0.17 C |
| 1949 | 10.2 C | +0.89 C |
| 1950 | 8.7 C | -0.59 C |
| 1951 | 8.9 C | -0.37 C |
| 1952 | 9.8 C | +0.57 C |
| 1953 | 10.3 C | +1.07 C |
| 1954 | 9.7 C | +0.41 C |
| 1956 | 9.2 C | -0.04 C |
| 1957 | 9.4 C | +0.11 C |
| 1958 | 8.9 C | -0.33 C |
| 1959 | 9.7 C | +0.47 C |
| 1960 | 9.0 C | -0.32 C |
| 1961 | 9.7 C | +0.46 C |
| 1962 | 9.1 C | -0.16 C |
| 1963 | 9.1 C | -0.21 C |
| 1964 | 10.1 C | +0.78 C |
| 1965 | 9.0 C | -0.30 C |
| 1966 | 9.2 C | -0.12 C |
| 1967 | 8.8 C | -0.45 C |
| 1968 | 9.3 C | +0.07 C |
| 1969 | 9.1 C | -0.18 C |
| 1970 | 8.8 C | -0.44 C |
| 1971 | 9.1 C | -0.17 C |
| 1972 | 7.5 C | -1.82 C |
| 1973 | 10.2 C | +0.92 C |
| 1974 | 8.5 C | -0.76 C |
| 1975 | 9.3 C | +0.05 C |
| 1976 | 7.9 C | -1.34 C |
| 1977 | 8.9 C | -0.42 C |
| 1978 | 8.1 C | -1.20 C |
| 1979 | 8.4 C | -0.89 C |
| 1980 | 8.1 C | -1.20 C |
| 1981 | 8.8 C | -0.52 C |
| 1982 | 8.2 C | -1.05 C |
| 1983 | 9.5 C | +0.23 C |
| 1984 | 9.0 C | -0.23 C |
| 1985 | 8.7 C | -0.57 C |
| 1986 | 8.6 C | -0.64 C |
| 1987 | 9.6 C | +0.35 C |
| 1988 | 8.7 C | -0.55 C |
| 1989 | 7.8 C | -1.51 C |
| 1990 | 9.0 C | -0.24 C |
| 1991 | 9.4 C | +0.13 C |
| 1992 | 8.4 C | -0.86 C |
| 1993 | 8.6 C | -0.66 C |
| 1994 | 9.0 C | -0.23 C |
| 1995 | 9.0 C | -0.30 C |
| 1996 | 8.3 C | -0.97 C |
| 1997 | 8.9 C | -0.39 C |
| 1998 | 11.2 C | +1.89 C |
| 2000 | 9.8 C | +0.57 C |
| 2001 | 10.1 C | +0.78 C |
| 2002 | 9.8 C | +0.52 C |
| 2003 | 8.4 C | -0.90 C |
| 2004 | 8.9 C | -0.39 C |
| 2005 | 9.5 C | +0.27 C |
| 2007 | 9.6 C | +0.34 C |
| 2008 | 9.1 C | -0.13 C |
| 2009 | 9.0 C | -0.30 C |
| 2010 | 10.5 C | +1.21 C |
| 2011 | 9.8 C | +0.53 C |
| 2012 | 11.2 C | +1.93 C |
| 2013 | 9.2 C | -0.10 C |
| 2015 | 9.5 C | +0.24 C |
| 2016 | 12.2 C | +2.95 C |
| 2018 | 9.6 C | +0.36 C |
| 2019 | 9.5 C | +0.27 C |
| 2020 | 10.7 C | +1.41 C |
| 2021 | 11.2 C | +1.93 C |
| 2022 | 10.2 C | +0.96 C |
| 2023 | 10.9 C | +1.65 C |
| 2024 | 11.5 C | +2.23 C |
| 2025 | 9.2 C | -0.09 C |
The annual mean temperature here has risen by 0.2 C (0.1 to 0.2) per decade over 1934 to 2025. In Fahrenheit: 0.3 F (0.1 to 0.4) per decade. The slope is a straight line fitted to 78 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 0.2) per decade | 0.3 F (0.1 to 0.4) per decade | 1934 to 2025 | 78 | Rise |
| Mean daily maximum | 0.00 C (-0.09 to 0.08) per decade | -0.01 F (-0.16 to 0.14) per decade | 1934 to 2025 | 78 | Not clearly different from zero |
| Mean daily minimum | 0.3 C (0.2 to 0.4) per decade | 0.6 F (0.4 to 0.7) per decade | 1934 to 2025 | 78 | 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
1933 to 2026| Measure | Record | Year of the record | Median year | Years with a value |
|---|---|---|---|---|
| Hottest day (TXx) | 39.4 C (102.9 F) | 1936 | 35.0 C (95.0 F) | 94 |
| Coldest night (TNn) | -28.3 C (-18.9 F) | 1994 | -19.7 C (-3.5 F) | 94 |
| Wettest day (Rx1day) | 100.8 mm (4.0 in) | 1996 | 48.3 mm (1.9 in) | 94 |
| Wettest five days (Rx5day) | 151.6 mm (6.0 in) | 1996 | 72.4 mm (2.9 in) | 94 |
| Longest dry spell (CDD) | 42 days | 1969 | 18 days | 94 |
Hottest day (TXx)
| Year | Hottest day (TXx) |
|---|---|
| 1933 | 36.1 C (97.0 F) |
| 1934 | 37.8 C (100.0 F) |
| 1935 | 35.0 C (95.0 F) |
| 1936 | 39.4 C (102.9 F) |
| 1937 | 34.4 C (93.9 F) |
| 1938 | 33.3 C (91.9 F) |
| 1939 | 33.9 C (93.0 F) |
| 1940 | 36.1 C (97.0 F) |
| 1941 | 36.7 C (98.1 F) |
| 1942 | 35.0 C (95.0 F) |
| 1943 | 33.9 C (93.0 F) |
| 1944 | 37.8 C (100.0 F) |
| 1945 | 35.0 C (95.0 F) |
| 1946 | 35.6 C (96.1 F) |
| 1947 | 23.3 C (73.9 F) |
| 1948 | 36.7 C (98.1 F) |
| 1949 | 36.7 C (98.1 F) |
| 1950 | 35.6 C (96.1 F) |
| 1951 | 33.3 C (91.9 F) |
| 1952 | 37.2 C (99.0 F) |
| 1953 | 38.3 C (100.9 F) |
| 1954 | 35.0 C (95.0 F) |
| 1955 | 38.9 C (102.0 F) |
| 1956 | 35.0 C (95.0 F) |
| 1957 | 35.0 C (95.0 F) |
| 1958 | 32.8 C (91.0 F) |
| 1959 | 34.4 C (93.9 F) |
| 1960 | 33.9 C (93.0 F) |
| 1961 | 33.3 C (91.9 F) |
| 1962 | 33.9 C (93.0 F) |
| 1963 | 35.6 C (96.1 F) |
| 1964 | 35.6 C (96.1 F) |
| 1965 | 34.4 C (93.9 F) |
| 1966 | 35.6 C (96.1 F) |
| 1967 | 33.9 C (93.0 F) |
| 1968 | 35.0 C (95.0 F) |
| 1969 | 33.3 C (91.9 F) |
| 1970 | 33.3 C (91.9 F) |
| 1971 | 37.8 C (100.0 F) |
| 1972 | 34.4 C (93.9 F) |
| 1973 | 36.7 C (98.1 F) |
| 1974 | 36.1 C (97.0 F) |
| 1975 | 38.9 C (102.0 F) |
| 1976 | 34.4 C (93.9 F) |
| 1977 | 37.8 C (100.0 F) |
| 1978 | 33.9 C (93.0 F) |
| 1979 | 33.9 C (93.0 F) |
| 1980 | 33.3 C (91.9 F) |
| 1981 | 34.4 C (93.9 F) |
| 1982 | 33.3 C (91.9 F) |
| 1983 | 35.6 C (96.1 F) |
| 1984 | 35.0 C (95.0 F) |
| 1985 | 33.3 C (91.9 F) |
| 1986 | 36.1 C (97.0 F) |
| 1987 | 35.0 C (95.0 F) |
| 1988 | 38.9 C (102.0 F) |
| 1989 | 33.9 C (93.0 F) |
| 1990 | 36.7 C (98.1 F) |
| 1991 | 35.6 C (96.1 F) |
| 1992 | 33.9 C (93.0 F) |
| 1993 | 34.4 C (93.9 F) |
| 1994 | 36.7 C (98.1 F) |
| 1995 | 38.3 C (100.9 F) |
| 1996 | 35.0 C (95.0 F) |
| 1997 | 35.0 C (95.0 F) |
| 1998 | 35.6 C (96.1 F) |
| 1999 | 35.0 C (95.0 F) |
| 2000 | 33.3 C (91.9 F) |
| 2001 | 38.9 C (102.0 F) |
| 2002 | 36.1 C (97.0 F) |
| 2003 | 33.9 C (93.0 F) |
| 2004 | 33.3 C (91.9 F) |
| 2005 | 34.4 C (93.9 F) |
| 2006 | 35.6 C (96.1 F) |
| 2007 | 35.6 C (96.1 F) |
| 2008 | 32.8 C (91.0 F) |
| 2009 | 33.9 C (93.0 F) |
| 2010 | 36.1 C (97.0 F) |
| 2011 | 37.2 C (99.0 F) |
| 2012 | 37.8 C (100.0 F) |
| 2013 | 36.1 C (97.0 F) |
| 2014 | 32.2 C (90.0 F) |
| 2015 | 32.8 C (91.0 F) |
| 2016 | 35.6 C (96.1 F) |
| 2017 | 33.9 C (93.0 F) |
| 2018 | 35.6 C (96.1 F) |
| 2019 | 35.0 C (95.0 F) |
| 2020 | 36.1 C (97.0 F) |
| 2021 | 33.9 C (93.0 F) |
| 2022 | 33.9 C (93.0 F) |
| 2023 | 32.8 C (91.0 F) |
| 2024 | 33.9 C (93.0 F) |
| 2025 | 35.0 C (95.0 F) |
| 2026 | 36.1 C (97.0 F) |
Coldest night (TNn)
| Year | Coldest night (TNn) |
|---|---|
| 1933 | -19.4 C (-2.9 F) |
| 1934 | -26.1 C (-15.0 F) |
| 1935 | -18.3 C (-0.9 F) |
| 1936 | -14.4 C (6.1 F) |
| 1937 | -16.7 C (1.9 F) |
| 1938 | -19.4 C (-2.9 F) |
| 1939 | -18.9 C (-2.0 F) |
| 1940 | -21.7 C (-7.1 F) |
| 1941 | -17.8 C (0.0 F) |
| 1942 | -21.7 C (-7.1 F) |
| 1943 | -22.8 C (-9.0 F) |
| 1944 | -18.9 C (-2.0 F) |
| 1945 | -21.1 C (-6.0 F) |
| 1946 | -15.6 C (3.9 F) |
| 1947 | -13.3 C (8.1 F) |
| 1948 | -22.2 C (-8.0 F) |
| 1949 | -17.8 C (0.0 F) |
| 1950 | -20.6 C (-5.1 F) |
| 1951 | -23.3 C (-9.9 F) |
| 1952 | -16.7 C (1.9 F) |
| 1953 | -15.6 C (3.9 F) |
| 1954 | -17.2 C (1.0 F) |
| 1955 | -18.9 C (-2.0 F) |
| 1956 | -16.1 C (3.0 F) |
| 1957 | -20.6 C (-5.1 F) |
| 1958 | -22.2 C (-8.0 F) |
| 1959 | -20.0 C (-4.0 F) |
| 1960 | -20.6 C (-5.1 F) |
| 1961 | -22.2 C (-8.0 F) |
| 1962 | -21.1 C (-6.0 F) |
| 1963 | -25.0 C (-13.0 F) |
| 1964 | -17.2 C (1.0 F) |
| 1965 | -19.4 C (-2.9 F) |
| 1966 | -21.7 C (-7.1 F) |
| 1967 | -20.6 C (-5.1 F) |
| 1968 | -20.6 C (-5.1 F) |
| 1969 | -20.0 C (-4.0 F) |
| 1970 | -20.6 C (-5.1 F) |
| 1971 | -21.7 C (-7.1 F) |
| 1972 | -23.9 C (-11.0 F) |
| 1973 | -17.8 C (0.0 F) |
| 1974 | -18.9 C (-2.0 F) |
| 1975 | -17.8 C (0.0 F) |
| 1976 | -23.9 C (-11.0 F) |
| 1977 | -21.7 C (-7.1 F) |
| 1978 | -18.9 C (-2.0 F) |
| 1979 | -21.7 C (-7.1 F) |
| 1980 | -18.3 C (-0.9 F) |
| 1981 | -22.8 C (-9.0 F) |
| 1982 | -26.1 C (-15.0 F) |
| 1983 | -21.7 C (-7.1 F) |
| 1984 | -23.9 C (-11.0 F) |
| 1985 | -24.4 C (-11.9 F) |
| 1986 | -21.7 C (-7.1 F) |
| 1987 | -21.7 C (-7.1 F) |
| 1988 | -18.9 C (-2.0 F) |
| 1989 | -21.7 C (-7.1 F) |
| 1990 | -21.1 C (-6.0 F) |
| 1991 | -21.7 C (-7.1 F) |
| 1992 | -21.1 C (-6.0 F) |
| 1993 | -17.8 C (0.0 F) |
| 1994 | -28.3 C (-18.9 F) |
| 1995 | -21.7 C (-7.1 F) |
| 1996 | -22.2 C (-8.0 F) |
| 1997 | -21.7 C (-7.1 F) |
| 1998 | -13.9 C (7.0 F) |
| 1999 | -13.3 C (8.1 F) |
| 2000 | -19.4 C (-2.9 F) |
| 2001 | -14.4 C (6.1 F) |
| 2002 | -12.8 C (9.0 F) |
| 2003 | -21.7 C (-7.1 F) |
| 2004 | -19.4 C (-2.9 F) |
| 2005 | -17.8 C (0.0 F) |
| 2006 | -16.1 C (3.0 F) |
| 2007 | -20.0 C (-4.0 F) |
| 2008 | -18.9 C (-2.0 F) |
| 2009 | -21.1 C (-6.0 F) |
| 2010 | -15.6 C (3.9 F) |
| 2011 | -17.8 C (0.0 F) |
| 2012 | -15.0 C (5.0 F) |
| 2013 | -17.8 C (0.0 F) |
| 2014 | -25.6 C (-14.1 F) |
| 2015 | -25.6 C (-14.1 F) |
| 2016 | -17.2 C (1.0 F) |
| 2017 | -18.9 C (-2.0 F) |
| 2018 | -19.4 C (-2.9 F) |
| 2019 | -23.3 C (-9.9 F) |
| 2020 | -15.6 C (3.9 F) |
| 2021 | -16.1 C (3.0 F) |
| 2022 | -15.6 C (3.9 F) |
| 2023 | -15.0 C (5.0 F) |
| 2024 | -17.8 C (0.0 F) |
| 2025 | -18.3 C (-0.9 F) |
| 2026 | -20.0 C (-4.0 F) |
Wettest day (Rx1day)
| Year | Wettest day (Rx1day) |
|---|---|
| 1933 | 34.5 mm (1.4 in) |
| 1934 | 51.6 mm (2.0 in) |
| 1935 | 38.1 mm (1.5 in) |
| 1936 | 31.0 mm (1.2 in) |
| 1937 | 40.6 mm (1.6 in) |
| 1938 | 32.5 mm (1.3 in) |
| 1939 | 40.6 mm (1.6 in) |
| 1940 | 77.2 mm (3.0 in) |
| 1941 | 43.4 mm (1.7 in) |
| 1942 | 40.6 mm (1.6 in) |
| 1943 | 86.1 mm (3.4 in) |
| 1944 | 34.3 mm (1.4 in) |
| 1945 | 40.4 mm (1.6 in) |
| 1946 | 53.6 mm (2.1 in) |
| 1947 | 30.5 mm (1.2 in) |
| 1948 | 62.5 mm (2.5 in) |
| 1949 | 57.4 mm (2.3 in) |
| 1950 | 77.7 mm (3.1 in) |
| 1951 | 75.7 mm (3.0 in) |
| 1952 | 48.3 mm (1.9 in) |
| 1953 | 39.6 mm (1.6 in) |
| 1954 | 56.9 mm (2.2 in) |
| 1955 | 43.7 mm (1.7 in) |
| 1956 | 74.4 mm (2.9 in) |
| 1957 | 42.7 mm (1.7 in) |
| 1958 | 38.4 mm (1.5 in) |
| 1959 | 56.1 mm (2.2 in) |
| 1960 | 58.4 mm (2.3 in) |
| 1961 | 30.5 mm (1.2 in) |
| 1962 | 57.4 mm (2.3 in) |
| 1963 | 36.3 mm (1.4 in) |
| 1964 | 39.4 mm (1.6 in) |
| 1965 | 50.8 mm (2.0 in) |
| 1966 | 52.6 mm (2.1 in) |
| 1967 | 39.6 mm (1.6 in) |
| 1968 | 50.5 mm (2.0 in) |
| 1969 | 39.6 mm (1.6 in) |
| 1970 | 31.8 mm (1.3 in) |
| 1971 | 57.9 mm (2.3 in) |
| 1972 | 36.1 mm (1.4 in) |
| 1973 | 36.6 mm (1.4 in) |
| 1974 | 45.7 mm (1.8 in) |
| 1975 | 48.3 mm (1.9 in) |
| 1976 | 48.3 mm (1.9 in) |
| 1977 | 38.1 mm (1.5 in) |
| 1978 | 42.7 mm (1.7 in) |
| 1979 | 35.6 mm (1.4 in) |
| 1980 | 38.1 mm (1.5 in) |
| 1981 | 50.8 mm (2.0 in) |
| 1982 | 47.0 mm (1.9 in) |
| 1983 | 37.3 mm (1.5 in) |
| 1984 | 66.3 mm (2.6 in) |
| 1985 | 45.5 mm (1.8 in) |
| 1986 | 61.2 mm (2.4 in) |
| 1987 | 46.7 mm (1.8 in) |
| 1988 | 73.7 mm (2.9 in) |
| 1989 | 48.0 mm (1.9 in) |
| 1990 | 39.6 mm (1.6 in) |
| 1991 | 42.9 mm (1.7 in) |
| 1992 | 50.8 mm (2.0 in) |
| 1993 | 45.7 mm (1.8 in) |
| 1994 | 94.5 mm (3.7 in) |
| 1995 | 72.9 mm (2.9 in) |
| 1996 | 100.8 mm (4.0 in) |
| 1997 | 39.1 mm (1.5 in) |
| 1998 | 50.5 mm (2.0 in) |
| 1999 | 36.1 mm (1.4 in) |
| 2000 | 49.5 mm (1.9 in) |
| 2001 | 32.8 mm (1.3 in) |
| 2002 | 22.6 mm (0.9 in) |
| 2003 | 49.3 mm (1.9 in) |
| 2004 | 75.7 mm (3.0 in) |
| 2005 | 90.7 mm (3.6 in) |
| 2006 | 44.5 mm (1.8 in) |
| 2007 | 69.6 mm (2.7 in) |
| 2008 | 50.5 mm (2.0 in) |
| 2009 | 48.5 mm (1.9 in) |
| 2010 | 56.9 mm (2.2 in) |
| 2011 | 68.3 mm (2.7 in) |
| 2012 | 47.2 mm (1.9 in) |
| 2013 | 61.5 mm (2.4 in) |
| 2014 | 45.7 mm (1.8 in) |
| 2015 | 51.8 mm (2.0 in) |
| 2016 | 56.1 mm (2.2 in) |
| 2017 | 50.3 mm (2.0 in) |
| 2018 | 43.7 mm (1.7 in) |
| 2019 | 58.4 mm (2.3 in) |
| 2020 | 66.0 mm (2.6 in) |
| 2021 | 57.9 mm (2.3 in) |
| 2022 | 47.2 mm (1.9 in) |
| 2023 | 49.3 mm (1.9 in) |
| 2024 | 71.1 mm (2.8 in) |
| 2025 | 58.7 mm (2.3 in) |
| 2026 | 49.5 mm (1.9 in) |
Wettest five days (Rx5day)
| Year | Wettest five days (Rx5day) |
|---|---|
| 1933 | 48.5 mm (1.9 in) |
| 1934 | 55.7 mm (2.2 in) |
| 1935 | 56.9 mm (2.2 in) |
| 1936 | 42.5 mm (1.7 in) |
| 1937 | 73.4 mm (2.9 in) |
| 1938 | 37.1 mm (1.5 in) |
| 1939 | 51.1 mm (2.0 in) |
| 1940 | 86.1 mm (3.4 in) |
| 1941 | 67.5 mm (2.7 in) |
| 1942 | 55.0 mm (2.2 in) |
| 1943 | 108.7 mm (4.3 in) |
| 1944 | 66.8 mm (2.6 in) |
| 1945 | 111.3 mm (4.4 in) |
| 1946 | 85.6 mm (3.4 in) |
| 1947 | 62.7 mm (2.5 in) |
| 1948 | 114.4 mm (4.5 in) |
| 1949 | 109.8 mm (4.3 in) |
| 1950 | 97.8 mm (3.9 in) |
| 1951 | 75.7 mm (3.0 in) |
| 1952 | 73.6 mm (2.9 in) |
| 1953 | 62.5 mm (2.5 in) |
| 1954 | 88.7 mm (3.5 in) |
| 1955 | 49.7 mm (2.0 in) |
| 1956 | 95.2 mm (3.7 in) |
| 1957 | 90.7 mm (3.6 in) |
| 1958 | 60.5 mm (2.4 in) |
| 1959 | 88.0 mm (3.5 in) |
| 1960 | 61.7 mm (2.4 in) |
| 1961 | 57.6 mm (2.3 in) |
| 1962 | 87.7 mm (3.5 in) |
| 1963 | 39.3 mm (1.5 in) |
| 1964 | 53.3 mm (2.1 in) |
| 1965 | 62.0 mm (2.4 in) |
| 1966 | 72.1 mm (2.8 in) |
| 1967 | 62.9 mm (2.5 in) |
| 1968 | 85.9 mm (3.4 in) |
| 1969 | 55.9 mm (2.2 in) |
| 1970 | 69.3 mm (2.7 in) |
| 1971 | 57.9 mm (2.3 in) |
| 1972 | 80.0 mm (3.1 in) |
| 1973 | 74.2 mm (2.9 in) |
| 1974 | 66.6 mm (2.6 in) |
| 1975 | 70.1 mm (2.8 in) |
| 1976 | 68.2 mm (2.7 in) |
| 1977 | 55.7 mm (2.2 in) |
| 1978 | 76.0 mm (3.0 in) |
| 1979 | 57.8 mm (2.3 in) |
| 1980 | 50.3 mm (2.0 in) |
| 1981 | 80.0 mm (3.1 in) |
| 1982 | 77.7 mm (3.1 in) |
| 1983 | 57.4 mm (2.3 in) |
| 1984 | 93.8 mm (3.7 in) |
| 1985 | 67.3 mm (2.6 in) |
| 1986 | 85.9 mm (3.4 in) |
| 1987 | 56.4 mm (2.2 in) |
| 1988 | 90.2 mm (3.6 in) |
| 1989 | 97.6 mm (3.8 in) |
| 1990 | 65.1 mm (2.6 in) |
| 1991 | 62.0 mm (2.4 in) |
| 1992 | 57.5 mm (2.3 in) |
| 1993 | 107.4 mm (4.2 in) |
| 1994 | 111.3 mm (4.4 in) |
| 1995 | 97.5 mm (3.8 in) |
| 1996 | 151.6 mm (6.0 in) |
| 1997 | 61.6 mm (2.4 in) |
| 1998 | 65.9 mm (2.6 in) |
| 1999 | 53.6 mm (2.1 in) |
| 2000 | 71.4 mm (2.8 in) |
| 2001 | 55.9 mm (2.2 in) |
| 2002 | 45.5 mm (1.8 in) |
| 2003 | 80.5 mm (3.2 in) |
| 2004 | 119.6 mm (4.7 in) |
| 2005 | 103.9 mm (4.1 in) |
| 2006 | 80.3 mm (3.2 in) |
| 2007 | 85.6 mm (3.4 in) |
| 2008 | 107.2 mm (4.2 in) |
| 2009 | 75.8 mm (3.0 in) |
| 2010 | 78.0 mm (3.1 in) |
| 2011 | 101.3 mm (4.0 in) |
| 2012 | 90.7 mm (3.6 in) |
| 2013 | 103.4 mm (4.1 in) |
| 2014 | 53.6 mm (2.1 in) |
| 2015 | 87.9 mm (3.5 in) |
| 2016 | 88.4 mm (3.5 in) |
| 2017 | 62.0 mm (2.4 in) |
| 2018 | 80.8 mm (3.2 in) |
| 2019 | 66.5 mm (2.6 in) |
| 2020 | 94.5 mm (3.7 in) |
| 2021 | 145.1 mm (5.7 in) |
| 2022 | 70.6 mm (2.8 in) |
| 2023 | 89.0 mm (3.5 in) |
| 2024 | 71.1 mm (2.8 in) |
| 2025 | 72.7 mm (2.9 in) |
| 2026 | 71.3 mm (2.8 in) |
Longest dry spell (CDD)
| Year | Longest dry spell (CDD) |
|---|---|
| 1933 | 26 days |
| 1934 | 27 days |
| 1935 | 19 days |
| 1936 | 25 days |
| 1937 | 13 days |
| 1938 | 23 days |
| 1939 | 20 days |
| 1940 | 20 days |
| 1941 | 23 days |
| 1942 | 22 days |
| 1943 | 25 days |
| 1944 | 15 days |
| 1945 | 16 days |
| 1946 | 27 days |
| 1947 | 5 days |
| 1948 | 20 days |
| 1949 | 19 days |
| 1950 | 12 days |
| 1951 | 11 days |
| 1952 | 21 days |
| 1953 | 13 days |
| 1954 | 21 days |
| 1955 | 17 days |
| 1956 | 24 days |
| 1957 | 22 days |
| 1958 | 30 days |
| 1959 | 12 days |
| 1960 | 12 days |
| 1961 | 25 days |
| 1962 | 22 days |
| 1963 | 29 days |
| 1964 | 17 days |
| 1965 | 14 days |
| 1966 | 19 days |
| 1967 | 20 days |
| 1968 | 25 days |
| 1969 | 42 days |
| 1970 | 18 days |
| 1971 | 16 days |
| 1972 | 14 days |
| 1973 | 27 days |
| 1974 | 9 days |
| 1975 | 16 days |
| 1976 | 25 days |
| 1977 | 18 days |
| 1978 | 21 days |
| 1979 | 19 days |
| 1980 | 20 days |
| 1981 | 21 days |
| 1982 | 15 days |
| 1983 | 16 days |
| 1984 | 13 days |
| 1985 | 13 days |
| 1986 | 18 days |
| 1987 | 23 days |
| 1988 | 30 days |
| 1989 | 21 days |
| 1990 | 16 days |
| 1991 | 18 days |
| 1992 | 21 days |
| 1993 | 11 days |
| 1994 | 14 days |
| 1995 | 20 days |
| 1996 | 14 days |
| 1997 | 12 days |
| 1998 | 13 days |
| 1999 | 27 days |
| 2000 | 11 days |
| 2001 | 16 days |
| 2002 | 16 days |
| 2003 | 14 days |
| 2004 | 21 days |
| 2005 | 16 days |
| 2006 | 15 days |
| 2007 | 16 days |
| 2008 | 13 days |
| 2009 | 17 days |
| 2010 | 16 days |
| 2011 | 17 days |
| 2012 | 15 days |
| 2013 | 21 days |
| 2014 | 15 days |
| 2015 | 21 days |
| 2016 | 18 days |
| 2017 | 10 days |
| 2018 | 13 days |
| 2019 | 18 days |
| 2020 | 12 days |
| 2021 | 25 days |
| 2022 | 20 days |
| 2023 | 22 days |
| 2024 | 25 days |
| 2025 | 16 days |
| 2026 | 12 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
78 years with a frostAcross 78 years with a frost, the median last spring frost at Port Huron falls on 26 April and the median first autumn frost on 22 October, which leaves a median of 180 days between them.
In 1992 to 2025 the median growing season was 196 days. That is 28 days more than in 1934 to 1973.
Fitted over all years, the growing season changes by +4.9 days per decade at this station.
| Measure | Median, all years | Earliest period (1934 to 1973) | Recent period (1992 to 2025) | Recent against earliest | Fitted trend |
|---|---|---|---|---|---|
| Last spring frost | 26 April | 30 April | 23 April | 7 days earlier | -1.9 days per decade |
| First autumn frost | 22 October | 19 October | 3 November | 15 days later | +3.0 days per decade |
| Growing days | 180 days | 168 days | 196 days | 28 days more | +4.9 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
84 years, 1934 to 2025A day with at least 49.2 mm (1.9 in) of rain is expected about once in 2 years. A day with at least 102.3 mm (4.0 in) of rain is expected about once in 100 years.
| Expected about once in | A day with at least | Note |
|---|---|---|
| 2 years | 49.2 mm (1.9 in) | |
| 5 years | 62.3 mm (2.5 in) | |
| 10 years | 71.4 mm (2.8 in) | |
| 25 years | 83.5 mm (3.3 in) | |
| 50 years | 92.7 mm (3.6 in) | |
| 100 years | 102.3 mm (4.0 in) | Longer than the 84 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, 84 years of values from 1934 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: 100.8 mm (4.0 in) in 1996; 94.5 mm (3.7 in) in 1994; 90.7 mm (3.6 in) in 2005.
Station Changes
1 suspectedOne change was suspected in the annual mean temperature of Port Huron, at 1970. Each is measured against neighbouring stations.
- Relative to 5 neighbouring stations, the station's annual mean temperature from 1970 ran 0.3 C (0.5 F) lower than in the years before (likely change).
| Year | Shift (C) | Shift (F) | Strength | Neighbours |
|---|---|---|---|---|
| 1970 | -0.3 | -0.5 | 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.
Climate Twins
2009 to 2025 against 1961 to 1990Over 2009 to 2025, Port Huron had a mean temperature of 10.3 C (50.5 F) and 880.7 mm (34.7 in) of rain a year. The 3 stations whose 1961 to 1990 climate was closest to that are Painesville 4 NW (United States, 164 km away), Elyria 3 E (United States, 180 km away) and Put-In-Bay (United States, 151 km away).
| Twin station | Country | Distance away | Mean temperature, 1961-1990 | Rain a year, 1961-1990 | Climate difference |
|---|---|---|---|---|---|
| Painesville 4 NW | United States | 164 km (102 mi) | 10.2 C (50.4 F) | 923.0 mm (36.3 in) | 0.62 |
| Elyria 3 E | United States | 180 km (112 mi) | 10.3 C (50.5 F) | 913.6 mm (36.0 in) | 0.67 |
| Put-In-Bay | United States | 151 km (94 mi) | 10.4 C (50.6 F) | 800.3 mm (31.5 in) | 0.74 |
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 2026-10-15 (15 October 2026). Records are computed by this site and are not official.
Data as of . Last revised (2026-10-12).