Rochester Gtr Intl Weather Records (USW00014768)
Record envelope, standing records and threshold days for Rochester Gtr Intl (USW00014768), New York, United States, with 101 years of record.
Key Facts for Rochester Gtr Intl
- Rochester Gtr Intl (USW00014768) is a weather station in New York, United States at 43.12 latitude and -77.68 longitude, 165 m (540 ft) above sea level.
- The station reports from 1926 to 2026, 101 years of record.
- 1,464 records set at Rochester Gtr Intl still stand.
- Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
- Rochester Gtr Intl set a daily record precipitation of 76.5 mm (3.0 in) on 18 July 2026.
About the Station
- Location: New York, United States, 43.12 latitude, -77.68 longitude.
- Elevation: 165 m (540 ft).
- Period of record: 1926 to 2026, 101 years.
- Eligible elements: tmax, tmin, prcp, snow, snwd.
Daily Record Envelope and 2026
2 days at or beyond a record| Month | Highest record high | Lowest record low | 2026 highest maximum | 2026 lowest minimum |
|---|---|---|---|---|
| Jan | 23.3 C (73.9 F) | -27.2 C (-17.0 F) | 14.4 C (57.9 F) | -21.1 C (-6.0 F) |
| Feb | 22.8 C (73.0 F) | -30.0 C (-22.0 F) | 10.0 C (50.0 F) | -22.8 C (-9.0 F) |
| Mar | 28.9 C (84.0 F) | -22.7 C (-8.9 F) | 22.8 C (73.0 F) | -12.2 C (10.0 F) |
| Apr | 33.9 C (93.0 F) | -10.6 C (12.9 F) | 25.6 C (78.1 F) | -6.1 C (21.0 F) |
| May | 34.4 C (93.9 F) | -3.3 C (26.1 F) | 31.7 C (89.1 F) | 0.6 C (33.1 F) |
| Jun | 37.8 C (100.0 F) | 1.7 C (35.1 F) | 33.3 C (91.9 F) | 6.1 C (43.0 F) |
| Jul | 38.9 C (102.0 F) | 5.6 C (42.1 F) | 34.4 C (93.9 F) | 9.4 C (48.9 F) |
| Aug | 37.2 C (99.0 F) | 2.2 C (36.0 F) | 30.6 C (87.1 F) | 9.4 C (48.9 F) |
| Sep | 37.2 C (99.0 F) | -2.2 C (28.0 F) | 29.4 C (84.9 F) | 4.4 C (39.9 F) |
| Oct | 32.8 C (91.0 F) | -6.7 C (19.9 F) | 25.6 C (78.1 F) | 2.2 C (36.0 F) |
| Nov | 27.2 C (81.0 F) | -15.5 C (4.1 F) | n/a | n/a |
| Dec | 22.2 C (72.0 F) | -26.7 C (-16.1 F) | n/a | n/a |
Which Years Hold Standing Records
1,464 standing records| Year set | Standing records |
|---|---|
| 1926 | 27 |
| 1927 | 14 |
| 1928 | 24 |
| 1929 | 16 |
| 1930 | 27 |
| 1931 | 23 |
| 1932 | 10 |
| 1933 | 27 |
| 1934 | 23 |
| 1935 | 8 |
| 1936 | 29 |
| 1937 | 9 |
| 1938 | 13 |
| 1939 | 7 |
| 1940 | 23 |
| 1941 | 11 |
| 1942 | 20 |
| 1943 | 18 |
| 1944 | 15 |
| 1945 | 28 |
| 1946 | 15 |
| 1947 | 23 |
| 1948 | 11 |
| 1949 | 28 |
| 1950 | 16 |
| 1951 | 21 |
| 1952 | 7 |
| 1953 | 19 |
| 1954 | 17 |
| 1955 | 16 |
| 1956 | 23 |
| 1957 | 22 |
| 1958 | 8 |
| 1959 | 21 |
| 1960 | 14 |
| 1961 | 10 |
| 1962 | 20 |
| 1963 | 19 |
| 1964 | 16 |
| 1965 | 22 |
| 1966 | 13 |
| 1967 | 16 |
| 1968 | 15 |
| 1969 | 9 |
| 1970 | 15 |
| 1971 | 12 |
| 1972 | 14 |
| 1973 | 14 |
| 1974 | 26 |
| 1975 | 9 |
| 1976 | 13 |
| 1977 | 20 |
| 1978 | 11 |
| 1979 | 35 |
| 1980 | 12 |
| 1981 | 15 |
| 1982 | 21 |
| 1983 | 4 |
| 1984 | 15 |
| 1985 | 10 |
| 1986 | 13 |
| 1987 | 10 |
| 1988 | 24 |
| 1989 | 12 |
| 1990 | 21 |
| 1991 | 17 |
| 1992 | 9 |
| 1993 | 19 |
| 1994 | 14 |
| 1995 | 9 |
| 1996 | 5 |
| 1997 | 6 |
| 1998 | 7 |
| 1999 | 6 |
| 2000 | 12 |
| 2001 | 11 |
| 2002 | 10 |
| 2003 | 2 |
| 2004 | 15 |
| 2005 | 5 |
| 2006 | 8 |
| 2007 | 12 |
| 2008 | 11 |
| 2009 | 3 |
| 2010 | 3 |
| 2011 | 3 |
| 2012 | 17 |
| 2013 | 10 |
| 2014 | 11 |
| 2015 | 15 |
| 2016 | 15 |
| 2017 | 15 |
| 2018 | 19 |
| 2019 | 11 |
| 2020 | 12 |
| 2021 | 10 |
| 2022 | 9 |
| 2023 | 5 |
| 2024 | 15 |
| 2025 | 8 |
| 2026 | 6 |
All-Time Record Progression
10 new records| Date | Kind | Detail |
|---|---|---|
| 1958-02-05 | Record snow depth | Record snow depth 63.5 cm (25.0 in) |
| 1958-02-18 | Record snow depth | Record snow depth 73.7 cm (29.0 in) |
| 1958-02-19 | Record snow depth | Record snow depth 83.8 cm (33.0 in) |
| 1959-03-12 | Record daily snowfall | Record daily snowfall 44.2 cm (17.4 in) |
| 1960-02-14 | Record daily snowfall | Record daily snowfall 46.7 cm (18.4 in) |
| 1966-02-01 | Record snow depth | Record snow depth 86.4 cm (34.0 in) |
| 1974-05-16 | Record daily precipitation | Record daily precipitation 87.6 mm (3.4 in) |
| 1979-09-14 | Record daily precipitation | Record daily precipitation 88.1 mm (3.5 in) |
| 1982-01-17 | Record low maximum temperature | Record low maximum temperature -20.0 C (-4.0 F) |
| 1996-01-03 | Record daily snowfall | Record daily snowfall 58.4 cm (23.0 in) |
Wettest Day of Each Month
Sep: 88.1 mm (3.5 in)| Month | Record daily precipitation (mm) | Date |
|---|---|---|
| Jan | 45.0 mm (1.8 in) | 31 January 2002 |
| Feb | 54.6 mm (2.1 in) | 7 February 1942 |
| Mar | 56.1 mm (2.2 in) | 3 March 1942 |
| Apr | 48.5 mm (1.9 in) | 19 April 1943 |
| May | 87.6 mm (3.4 in) | 16 May 1974 |
| Jun | 80.0 mm (3.1 in) | 18 June 2025 |
| Jul | 84.6 mm (3.3 in) | 12 July 2006 |
| Aug | 84.1 mm (3.3 in) | 10 August 1938 |
| Sep | 88.1 mm (3.5 in) | 14 September 1979 |
| Oct | 74.7 mm (2.9 in) | 25 October 1980 |
| Nov | 52.6 mm (2.1 in) | 29 November 1945 |
| Dec | 37.8 mm (1.5 in) | 25 December 1978 |
Period of Record Coverage
1926 to 2026| Year | Days with data | Share of year | Complete |
|---|---|---|---|
| 1926 | 364 | 100% | Yes |
| 1927 | 365 | 100% | Yes |
| 1928 | 366 | 100% | Yes |
| 1929 | 365 | 100% | Yes |
| 1930 | 365 | 100% | Yes |
| 1931 | 365 | 100% | Yes |
| 1932 | 365 | 100% | Yes |
| 1933 | 365 | 100% | Yes |
| 1934 | 365 | 100% | Yes |
| 1935 | 365 | 100% | Yes |
| 1936 | 366 | 100% | Yes |
| 1937 | 365 | 100% | Yes |
| 1938 | 365 | 100% | Yes |
| 1939 | 365 | 100% | Yes |
| 1940 | 366 | 100% | Yes |
| 1941 | 365 | 100% | Yes |
| 1942 | 365 | 100% | Yes |
| 1943 | 364 | 100% | Yes |
| 1944 | 366 | 100% | Yes |
| 1945 | 365 | 100% | Yes |
| 1946 | 365 | 100% | Yes |
| 1947 | 365 | 100% | Yes |
| 1948 | 366 | 100% | Yes |
| 1949 | 365 | 100% | Yes |
| 1950 | 365 | 100% | Yes |
| 1951 | 365 | 100% | Yes |
| 1952 | 366 | 100% | Yes |
| 1953 | 365 | 100% | Yes |
| 1954 | 365 | 100% | Yes |
| 1955 | 365 | 100% | Yes |
| 1956 | 366 | 100% | Yes |
| 1957 | 365 | 100% | Yes |
| 1958 | 365 | 100% | Yes |
| 1959 | 365 | 100% | 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 | 366 | 100% | Yes |
| 1969 | 365 | 100% | Yes |
| 1970 | 365 | 100% | Yes |
| 1971 | 365 | 100% | Yes |
| 1972 | 366 | 100% | Yes |
| 1973 | 365 | 100% | Yes |
| 1974 | 365 | 100% | Yes |
| 1975 | 365 | 100% | Yes |
| 1976 | 366 | 100% | Yes |
| 1977 | 365 | 100% | Yes |
| 1978 | 365 | 100% | Yes |
| 1979 | 365 | 100% | Yes |
| 1980 | 366 | 100% | Yes |
| 1981 | 365 | 100% | Yes |
| 1982 | 365 | 100% | Yes |
| 1983 | 365 | 100% | Yes |
| 1984 | 366 | 100% | Yes |
| 1985 | 365 | 100% | Yes |
| 1986 | 365 | 100% | Yes |
| 1987 | 365 | 100% | Yes |
| 1988 | 366 | 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 | 365 | 100% | Yes |
| 1996 | 366 | 100% | Yes |
| 1997 | 365 | 100% | Yes |
| 1998 | 365 | 100% | Yes |
| 1999 | 365 | 100% | Yes |
| 2000 | 366 | 100% | Yes |
| 2001 | 365 | 100% | Yes |
| 2002 | 365 | 100% | Yes |
| 2003 | 365 | 100% | Yes |
| 2004 | 366 | 100% | Yes |
| 2005 | 365 | 100% | Yes |
| 2006 | 365 | 100% | Yes |
| 2007 | 365 | 100% | Yes |
| 2008 | 366 | 100% | Yes |
| 2009 | 365 | 100% | Yes |
| 2010 | 365 | 100% | Yes |
| 2011 | 365 | 100% | Yes |
| 2012 | 366 | 100% | Yes |
| 2013 | 365 | 100% | Yes |
| 2014 | 365 | 100% | Yes |
| 2015 | 365 | 100% | Yes |
| 2016 | 366 | 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 | 282 | 77% | No |
Latest Records
20| Date | Station | Record | Value | Beat old record by | Old record stood | Significance |
|---|---|---|---|---|---|---|
| 18 July 2026 | Rochester Gtr Intl, US | daily rain | 76.5 mm (3.0 in) | 38.1 mm (1.5 in) | 11 years | 48 of 100 (Notable) |
| 22 June 2026 | Rochester Gtr Intl, US | daily low max (Tie) | 17.2 C (63.0 F) | tie | 85 years | 8 of 100 (Routine) |
| 10 June 2026 | Rochester Gtr Intl, US | daily high min | 21.1 C (70.0 F) | 0.5 C (0.9 F) | 89 years | 37 of 100 (Notable) |
| 19 May 2026 | Rochester Gtr Intl, US | daily high min | 19.4 C (66.9 F) | 0.5 C (0.9 F) | 95 years | 39 of 100 (Notable) |
| 18 May 2026 | Rochester Gtr Intl, US | daily high min | 18.3 C (64.9 F) | 0.5 C (0.9 F) | 8 years | 13 of 100 (Routine) |
| 14 May 2026 | Rochester Gtr Intl, US | daily low max (Tie) | 8.3 C (46.9 F) | tie | 24 years | 4 of 100 (Routine) |
| 15 April 2026 | Rochester Gtr Intl, US | daily rain | 22.9 mm (0.9 in) | 6.1 mm (0.24 in) | 40 years | 20 of 100 (Routine) |
| 31 March 2026 | Rochester Gtr Intl, US | daily rain | 41.9 mm (1.6 in) | 10.9 mm (0.4 in) | 8 years | 30 of 100 (Routine) |
| 26 March 2026 | Rochester Gtr Intl, US | daily rain | 20.1 mm (0.8 in) | 1.8 mm (0.07 in) | 19 years | 18 of 100 (Routine) |
| 11 March 2026 | Rochester Gtr Intl, US | daily rain | 24.1 mm (0.9 in) | 0.7 mm (0.03 in) | 89 years | 20 of 100 (Routine) |
| 10 March 2026 | Rochester Gtr Intl, US | daily high max | 20.6 C (69.1 F) | 0.6 C (1.1 F) | 48 years | 24 of 100 (Routine) |
| 7 March 2026 | Rochester Gtr Intl, US | daily high min | 10.6 C (51.1 F) | 2.3 C (4.1 F) | 52 years | 29 of 100 (Routine) |
| 7 March 2026 | Rochester Gtr Intl, US | daily high max | 22.8 C (73.0 F) | 2.8 C (5.0 F) | 13 years | 18 of 100 (Routine) |
| 18 February 2026 | Rochester Gtr Intl, US | daily rain | 15.5 mm (0.6 in) | 1.5 mm (0.06 in) | 84 years | 20 of 100 (Routine) |
| 25 January 2026 | Rochester Gtr Intl, US | daily snowfall | 21.1 cm (8.3 in) | 3.1 cm (1.2 in) | 47 years | 30 of 100 (Routine) |
| 18 December 2025 | Rochester Gtr Intl, US | daily high max | 12.8 C (55.0 F) | 0.6 C (1.1 F) | 58 years | 28 of 100 (Routine) |
| 8 December 2025 | Rochester Gtr Intl, US | daily low min (Tie) | -15.6 C (3.9 F) | tie | 48 years | 6 of 100 (Routine) |
| 10 November 2025 | Rochester Gtr Intl, US | daily low max (Tie) | -0.6 C (30.9 F) | tie | 38 years | 5 of 100 (Routine) |
| 30 October 2025 | Rochester Gtr Intl, US | daily rain | 23.6 mm (0.9 in) | 5.1 mm (0.20 in) | 55 years | 20 of 100 (Routine) |
| 6 October 2025 | Rochester Gtr Intl, US | daily high max (Tie) | 29.4 C (84.9 F) | tie | 88 years | 9 of 100 (Routine) |
Climate Trend
100 complete years, 1926 to 2025| Year | Annual mean temperature | Difference from the station mean |
|---|---|---|
| 1926 | 7.6 C | -1.55 C |
| 1927 | 9.4 C | +0.20 C |
| 1928 | 9.2 C | +0.03 C |
| 1929 | 8.9 C | -0.29 C |
| 1930 | 9.5 C | +0.37 C |
| 1931 | 10.8 C | +1.60 C |
| 1932 | 9.7 C | +0.52 C |
| 1933 | 9.8 C | +0.67 C |
| 1934 | 8.8 C | -0.34 C |
| 1935 | 8.8 C | -0.41 C |
| 1936 | 9.0 C | -0.13 C |
| 1937 | 9.4 C | +0.19 C |
| 1938 | 10.1 C | +0.96 C |
| 1939 | 9.3 C | +0.18 C |
| 1940 | 8.0 C | -1.13 C |
| 1941 | 9.1 C | -0.10 C |
| 1942 | 9.0 C | -0.21 C |
| 1943 | 8.0 C | -1.20 C |
| 1944 | 8.8 C | -0.38 C |
| 1945 | 8.5 C | -0.66 C |
| 1946 | 9.5 C | +0.36 C |
| 1947 | 9.0 C | -0.18 C |
| 1948 | 8.9 C | -0.26 C |
| 1949 | 10.1 C | +0.95 C |
| 1950 | 8.5 C | -0.68 C |
| 1951 | 8.9 C | -0.22 C |
| 1952 | 9.8 C | +0.59 C |
| 1953 | 10.2 C | +1.00 C |
| 1954 | 9.0 C | -0.19 C |
| 1955 | 9.3 C | +0.18 C |
| 1956 | 8.2 C | -0.94 C |
| 1957 | 9.0 C | -0.15 C |
| 1958 | 7.9 C | -1.27 C |
| 1959 | 9.2 C | +0.01 C |
| 1960 | 8.3 C | -0.86 C |
| 1961 | 8.9 C | -0.24 C |
| 1962 | 8.2 C | -0.93 C |
| 1963 | 8.0 C | -1.17 C |
| 1964 | 9.2 C | +0.00 C |
| 1965 | 8.4 C | -0.76 C |
| 1966 | 8.9 C | -0.31 C |
| 1967 | 8.6 C | -0.61 C |
| 1968 | 8.7 C | -0.50 C |
| 1969 | 8.8 C | -0.39 C |
| 1970 | 8.8 C | -0.34 C |
| 1971 | 8.7 C | -0.51 C |
| 1972 | 8.7 C | -0.45 C |
| 1973 | 10.3 C | +1.12 C |
| 1974 | 8.7 C | -0.50 C |
| 1975 | 9.5 C | +0.29 C |
| 1976 | 8.6 C | -0.61 C |
| 1977 | 9.1 C | -0.11 C |
| 1978 | 8.5 C | -0.62 C |
| 1979 | 8.4 C | -0.72 C |
| 1980 | 8.6 C | -0.56 C |
| 1981 | 8.7 C | -0.47 C |
| 1982 | 8.8 C | -0.34 C |
| 1983 | 9.3 C | +0.15 C |
| 1984 | 9.1 C | -0.09 C |
| 1985 | 8.7 C | -0.43 C |
| 1986 | 8.7 C | -0.51 C |
| 1987 | 9.3 C | +0.15 C |
| 1988 | 8.8 C | -0.38 C |
| 1989 | 8.2 C | -0.95 C |
| 1990 | 10.0 C | +0.84 C |
| 1991 | 9.9 C | +0.77 C |
| 1992 | 8.0 C | -1.14 C |
| 1993 | 8.3 C | -0.87 C |
| 1994 | 8.9 C | -0.28 C |
| 1995 | 9.3 C | +0.14 C |
| 1996 | 8.3 C | -0.91 C |
| 1997 | 8.1 C | -1.03 C |
| 1998 | 10.4 C | +1.21 C |
| 1999 | 9.6 C | +0.40 C |
| 2000 | 8.8 C | -0.41 C |
| 2001 | 9.9 C | +0.69 C |
| 2002 | 10.1 C | +0.91 C |
| 2003 | 8.3 C | -0.89 C |
| 2004 | 8.5 C | -0.66 C |
| 2005 | 9.2 C | +0.02 C |
| 2006 | 10.8 C | +1.64 C |
| 2007 | 9.6 C | +0.43 C |
| 2008 | 9.4 C | +0.25 C |
| 2009 | 8.4 C | -0.78 C |
| 2010 | 9.7 C | +0.49 C |
| 2011 | 9.7 C | +0.55 C |
| 2012 | 11.0 C | +1.85 C |
| 2013 | 9.4 C | +0.26 C |
| 2014 | 8.7 C | -0.44 C |
| 2015 | 9.4 C | +0.27 C |
| 2016 | 10.7 C | +1.49 C |
| 2017 | 10.3 C | +1.11 C |
| 2018 | 10.1 C | +0.93 C |
| 2019 | 9.3 C | +0.13 C |
| 2020 | 10.2 C | +0.99 C |
| 2021 | 10.4 C | +1.25 C |
| 2022 | 9.6 C | +0.42 C |
| 2023 | 10.6 C | +1.40 C |
| 2024 | 11.5 C | +2.30 C |
| 2025 | 9.6 C | +0.40 C |
The annual mean temperature here has risen by 0.08 C (0.03 to 0.13) per decade over 1926 to 2025. In Fahrenheit: 0.1 F (0.1 to 0.2) per decade. The slope is a straight line fitted to 100 complete years; the brackets give its 95 percent interval.
| Measure | Per decade (C) | Per decade (F) | Period | Complete years | Reading |
|---|---|---|---|---|---|
| Annual mean temperature | 0.08 C (0.03 to 0.13) per decade | 0.1 F (0.1 to 0.2) per decade | 1926 to 2025 | 100 | Rise |
| Mean daily maximum | 0.1 C (0.1 to 0.2) per decade | 0.2 F (0.1 to 0.3) per decade | 1926 to 2025 | 100 | Rise |
| Mean daily minimum | 0.06 C (0.00 to 0.11) per decade | 0.10 F (-0.01 to 0.20) per decade | 1926 to 2025 | 100 | Not clearly different from zero |
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
1926 to 2026| Measure | Record | Year of the record | Median year | Years with a value |
|---|---|---|---|---|
| Hottest day (TXx) | 38.9 C (102.0 F) | 1936 | 34.4 C (93.9 F) | 101 |
| Coldest night (TNn) | -30.0 C (-22.0 F) | 1934 | -20.6 C (-5.1 F) | 101 |
| Wettest day (Rx1day) | 88.1 mm (3.5 in) | 1979 | 43.9 mm (1.7 in) | 101 |
| Wettest five days (Rx5day) | 122.2 mm (4.8 in) | 1998 | 70.8 mm (2.8 in) | 101 |
| Longest dry spell (CDD) | 27 days | 1966 | 16 days | 101 |
Hottest day (TXx)
| Year | Hottest day (TXx) |
|---|---|
| 1926 | 33.3 C (91.9 F) |
| 1927 | 34.4 C (93.9 F) |
| 1928 | 34.4 C (93.9 F) |
| 1929 | 34.4 C (93.9 F) |
| 1930 | 35.6 C (96.1 F) |
| 1931 | 37.2 C (99.0 F) |
| 1932 | 35.0 C (95.0 F) |
| 1933 | 37.2 C (99.0 F) |
| 1934 | 35.6 C (96.1 F) |
| 1935 | 34.4 C (93.9 F) |
| 1936 | 38.9 C (102.0 F) |
| 1937 | 33.9 C (93.0 F) |
| 1938 | 34.4 C (93.9 F) |
| 1939 | 36.1 C (97.0 F) |
| 1940 | 34.4 C (93.9 F) |
| 1941 | 36.7 C (98.1 F) |
| 1942 | 35.0 C (95.0 F) |
| 1943 | 34.4 C (93.9 F) |
| 1944 | 36.7 C (98.1 F) |
| 1945 | 34.4 C (93.9 F) |
| 1946 | 34.4 C (93.9 F) |
| 1947 | 35.6 C (96.1 F) |
| 1948 | 37.2 C (99.0 F) |
| 1949 | 36.7 C (98.1 F) |
| 1950 | 33.3 C (91.9 F) |
| 1951 | 34.4 C (93.9 F) |
| 1952 | 36.7 C (98.1 F) |
| 1953 | 37.8 C (100.0 F) |
| 1954 | 33.3 C (91.9 F) |
| 1955 | 36.1 C (97.0 F) |
| 1956 | 33.3 C (91.9 F) |
| 1957 | 36.1 C (97.0 F) |
| 1958 | 32.8 C (91.0 F) |
| 1959 | 36.7 C (98.1 F) |
| 1960 | 35.0 C (95.0 F) |
| 1961 | 32.8 C (91.0 F) |
| 1962 | 34.4 C (93.9 F) |
| 1963 | 35.0 C (95.0 F) |
| 1964 | 36.7 C (98.1 F) |
| 1965 | 35.6 C (96.1 F) |
| 1966 | 36.7 C (98.1 F) |
| 1967 | 32.8 C (91.0 F) |
| 1968 | 33.3 C (91.9 F) |
| 1969 | 35.0 C (95.0 F) |
| 1970 | 33.9 C (93.0 F) |
| 1971 | 33.9 C (93.0 F) |
| 1972 | 34.4 C (93.9 F) |
| 1973 | 35.0 C (95.0 F) |
| 1974 | 34.4 C (93.9 F) |
| 1975 | 35.0 C (95.0 F) |
| 1976 | 32.8 C (91.0 F) |
| 1977 | 35.0 C (95.0 F) |
| 1978 | 36.7 C (98.1 F) |
| 1979 | 35.0 C (95.0 F) |
| 1980 | 34.4 C (93.9 F) |
| 1981 | 33.3 C (91.9 F) |
| 1982 | 35.0 C (95.0 F) |
| 1983 | 35.6 C (96.1 F) |
| 1984 | 32.2 C (90.0 F) |
| 1985 | 32.8 C (91.0 F) |
| 1986 | 31.7 C (89.1 F) |
| 1987 | 34.4 C (93.9 F) |
| 1988 | 36.7 C (98.1 F) |
| 1989 | 34.4 C (93.9 F) |
| 1990 | 33.9 C (93.0 F) |
| 1991 | 35.6 C (96.1 F) |
| 1992 | 31.1 C (88.0 F) |
| 1993 | 36.7 C (98.1 F) |
| 1994 | 36.1 C (97.0 F) |
| 1995 | 33.9 C (93.0 F) |
| 1996 | 33.3 C (91.9 F) |
| 1997 | 32.2 C (90.0 F) |
| 1998 | 31.7 C (89.1 F) |
| 1999 | 34.4 C (93.9 F) |
| 2000 | 31.1 C (88.0 F) |
| 2001 | 35.6 C (96.1 F) |
| 2002 | 36.1 C (97.0 F) |
| 2003 | 32.2 C (90.0 F) |
| 2004 | 31.7 C (89.1 F) |
| 2005 | 34.4 C (93.9 F) |
| 2006 | 34.4 C (93.9 F) |
| 2007 | 35.6 C (96.1 F) |
| 2008 | 33.9 C (93.0 F) |
| 2009 | 32.2 C (90.0 F) |
| 2010 | 34.4 C (93.9 F) |
| 2011 | 36.7 C (98.1 F) |
| 2012 | 36.1 C (97.0 F) |
| 2013 | 33.9 C (93.0 F) |
| 2014 | 33.3 C (91.9 F) |
| 2015 | 33.3 C (91.9 F) |
| 2016 | 35.6 C (96.1 F) |
| 2017 | 32.8 C (91.0 F) |
| 2018 | 35.6 C (96.1 F) |
| 2019 | 33.3 C (91.9 F) |
| 2020 | 36.1 C (97.0 F) |
| 2021 | 34.4 C (93.9 F) |
| 2022 | 33.9 C (93.0 F) |
| 2023 | 33.3 C (91.9 F) |
| 2024 | 34.4 C (93.9 F) |
| 2025 | 33.9 C (93.0 F) |
| 2026 | 34.4 C (93.9 F) |
Coldest night (TNn)
| Year | Coldest night (TNn) |
|---|---|
| 1926 | -17.8 C (0.0 F) |
| 1927 | -21.7 C (-7.1 F) |
| 1928 | -16.7 C (1.9 F) |
| 1929 | -18.3 C (-0.9 F) |
| 1930 | -16.7 C (1.9 F) |
| 1931 | -15.6 C (3.9 F) |
| 1932 | -13.3 C (8.1 F) |
| 1933 | -21.7 C (-7.1 F) |
| 1934 | -30.0 C (-22.0 F) |
| 1935 | -18.9 C (-2.0 F) |
| 1936 | -18.9 C (-2.0 F) |
| 1937 | -11.1 C (12.0 F) |
| 1938 | -20.6 C (-5.1 F) |
| 1939 | -17.8 C (0.0 F) |
| 1940 | -19.4 C (-2.9 F) |
| 1941 | -20.0 C (-4.0 F) |
| 1942 | -26.7 C (-16.1 F) |
| 1943 | -25.6 C (-14.1 F) |
| 1944 | -21.7 C (-7.1 F) |
| 1945 | -21.7 C (-7.1 F) |
| 1946 | -21.7 C (-7.1 F) |
| 1947 | -16.7 C (1.9 F) |
| 1948 | -23.3 C (-9.9 F) |
| 1949 | -15.6 C (3.9 F) |
| 1950 | -20.0 C (-4.0 F) |
| 1951 | -23.9 C (-11.0 F) |
| 1952 | -18.3 C (-0.9 F) |
| 1953 | -15.0 C (5.0 F) |
| 1954 | -18.3 C (-0.9 F) |
| 1955 | -20.6 C (-5.1 F) |
| 1956 | -17.8 C (0.0 F) |
| 1957 | -26.7 C (-16.1 F) |
| 1958 | -20.6 C (-5.1 F) |
| 1959 | -18.9 C (-2.0 F) |
| 1960 | -21.7 C (-7.1 F) |
| 1961 | -26.7 C (-16.1 F) |
| 1962 | -23.3 C (-9.9 F) |
| 1963 | -23.3 C (-9.9 F) |
| 1964 | -21.1 C (-6.0 F) |
| 1965 | -21.1 C (-6.0 F) |
| 1966 | -22.2 C (-8.0 F) |
| 1967 | -21.7 C (-7.1 F) |
| 1968 | -23.9 C (-11.0 F) |
| 1969 | -20.6 C (-5.1 F) |
| 1970 | -22.2 C (-8.0 F) |
| 1971 | -20.6 C (-5.1 F) |
| 1972 | -19.4 C (-2.9 F) |
| 1973 | -20.0 C (-4.0 F) |
| 1974 | -19.4 C (-2.9 F) |
| 1975 | -20.0 C (-4.0 F) |
| 1976 | -25.6 C (-14.1 F) |
| 1977 | -21.1 C (-6.0 F) |
| 1978 | -23.9 C (-11.0 F) |
| 1979 | -28.3 C (-18.9 F) |
| 1980 | -24.4 C (-11.9 F) |
| 1981 | -26.1 C (-15.0 F) |
| 1982 | -26.1 C (-15.0 F) |
| 1983 | -18.3 C (-0.9 F) |
| 1984 | -24.4 C (-11.9 F) |
| 1985 | -22.8 C (-9.0 F) |
| 1986 | -20.0 C (-4.0 F) |
| 1987 | -19.4 C (-2.9 F) |
| 1988 | -22.2 C (-8.0 F) |
| 1989 | -20.0 C (-4.0 F) |
| 1990 | -17.8 C (0.0 F) |
| 1991 | -16.7 C (1.9 F) |
| 1992 | -17.2 C (1.0 F) |
| 1993 | -21.1 C (-6.0 F) |
| 1994 | -27.2 C (-17.0 F) |
| 1995 | -17.8 C (0.0 F) |
| 1996 | -22.2 C (-8.0 F) |
| 1997 | -22.2 C (-8.0 F) |
| 1998 | -14.4 C (6.1 F) |
| 1999 | -21.7 C (-7.1 F) |
| 2000 | -20.6 C (-5.1 F) |
| 2001 | -14.4 C (6.1 F) |
| 2002 | -16.7 C (1.9 F) |
| 2003 | -22.2 C (-8.0 F) |
| 2004 | -24.4 C (-11.9 F) |
| 2005 | -23.3 C (-9.9 F) |
| 2006 | -15.0 C (5.0 F) |
| 2007 | -17.8 C (0.0 F) |
| 2008 | -17.8 C (0.0 F) |
| 2009 | -17.8 C (0.0 F) |
| 2010 | -20.0 C (-4.0 F) |
| 2011 | -22.2 C (-8.0 F) |
| 2012 | -16.7 C (1.9 F) |
| 2013 | -19.9 C (-3.8 F) |
| 2014 | -22.7 C (-8.9 F) |
| 2015 | -23.8 C (-10.8 F) |
| 2016 | -24.3 C (-11.7 F) |
| 2017 | -17.1 C (1.2 F) |
| 2018 | -21.0 C (-5.8 F) |
| 2019 | -18.8 C (-1.8 F) |
| 2020 | -16.6 C (2.1 F) |
| 2021 | -16.6 C (2.1 F) |
| 2022 | -21.6 C (-6.9 F) |
| 2023 | -22.1 C (-7.8 F) |
| 2024 | -17.7 C (0.1 F) |
| 2025 | -18.8 C (-1.8 F) |
| 2026 | -22.8 C (-9.0 F) |
Wettest day (Rx1day)
| Year | Wettest day (Rx1day) |
|---|---|
| 1926 | 35.6 mm (1.4 in) |
| 1927 | 40.6 mm (1.6 in) |
| 1928 | 42.2 mm (1.7 in) |
| 1929 | 56.1 mm (2.2 in) |
| 1930 | 41.7 mm (1.6 in) |
| 1931 | 37.8 mm (1.5 in) |
| 1932 | 29.0 mm (1.1 in) |
| 1933 | 44.7 mm (1.8 in) |
| 1934 | 28.2 mm (1.1 in) |
| 1935 | 54.1 mm (2.1 in) |
| 1936 | 48.0 mm (1.9 in) |
| 1937 | 79.2 mm (3.1 in) |
| 1938 | 84.1 mm (3.3 in) |
| 1939 | 29.7 mm (1.2 in) |
| 1940 | 32.8 mm (1.3 in) |
| 1941 | 34.0 mm (1.3 in) |
| 1942 | 56.1 mm (2.2 in) |
| 1943 | 48.5 mm (1.9 in) |
| 1944 | 36.6 mm (1.4 in) |
| 1945 | 61.5 mm (2.4 in) |
| 1946 | 43.2 mm (1.7 in) |
| 1947 | 55.6 mm (2.2 in) |
| 1948 | 30.5 mm (1.2 in) |
| 1949 | 34.3 mm (1.4 in) |
| 1950 | 65.0 mm (2.6 in) |
| 1951 | 41.1 mm (1.6 in) |
| 1952 | 33.0 mm (1.3 in) |
| 1953 | 47.0 mm (1.9 in) |
| 1954 | 38.1 mm (1.5 in) |
| 1955 | 59.7 mm (2.4 in) |
| 1956 | 23.9 mm (0.9 in) |
| 1957 | 29.2 mm (1.1 in) |
| 1958 | 47.2 mm (1.9 in) |
| 1959 | 43.9 mm (1.7 in) |
| 1960 | 38.6 mm (1.5 in) |
| 1961 | 36.6 mm (1.4 in) |
| 1962 | 49.5 mm (1.9 in) |
| 1963 | 40.6 mm (1.6 in) |
| 1964 | 27.2 mm (1.1 in) |
| 1965 | 36.1 mm (1.4 in) |
| 1966 | 49.3 mm (1.9 in) |
| 1967 | 37.1 mm (1.5 in) |
| 1968 | 36.1 mm (1.4 in) |
| 1969 | 32.5 mm (1.3 in) |
| 1970 | 45.5 mm (1.8 in) |
| 1971 | 57.2 mm (2.3 in) |
| 1972 | 54.6 mm (2.1 in) |
| 1973 | 38.9 mm (1.5 in) |
| 1974 | 87.6 mm (3.4 in) |
| 1975 | 30.2 mm (1.2 in) |
| 1976 | 48.5 mm (1.9 in) |
| 1977 | 34.3 mm (1.4 in) |
| 1978 | 37.8 mm (1.5 in) |
| 1979 | 88.1 mm (3.5 in) |
| 1980 | 74.7 mm (2.9 in) |
| 1981 | 58.9 mm (2.3 in) |
| 1982 | 35.8 mm (1.4 in) |
| 1983 | 57.9 mm (2.3 in) |
| 1984 | 40.4 mm (1.6 in) |
| 1985 | 45.0 mm (1.8 in) |
| 1986 | 39.9 mm (1.6 in) |
| 1987 | 82.6 mm (3.3 in) |
| 1988 | 43.7 mm (1.7 in) |
| 1989 | 37.6 mm (1.5 in) |
| 1990 | 41.1 mm (1.6 in) |
| 1991 | 45.5 mm (1.8 in) |
| 1992 | 32.5 mm (1.3 in) |
| 1993 | 26.2 mm (1.0 in) |
| 1994 | 46.5 mm (1.8 in) |
| 1995 | 58.9 mm (2.3 in) |
| 1996 | 72.4 mm (2.9 in) |
| 1997 | 48.8 mm (1.9 in) |
| 1998 | 66.3 mm (2.6 in) |
| 1999 | 38.1 mm (1.5 in) |
| 2000 | 59.9 mm (2.4 in) |
| 2001 | 40.6 mm (1.6 in) |
| 2002 | 53.8 mm (2.1 in) |
| 2003 | 26.7 mm (1.1 in) |
| 2004 | 55.4 mm (2.2 in) |
| 2005 | 78.2 mm (3.1 in) |
| 2006 | 84.6 mm (3.3 in) |
| 2007 | 31.5 mm (1.2 in) |
| 2008 | 33.5 mm (1.3 in) |
| 2009 | 43.9 mm (1.7 in) |
| 2010 | 48.0 mm (1.9 in) |
| 2011 | 36.6 mm (1.4 in) |
| 2012 | 67.1 mm (2.6 in) |
| 2013 | 60.2 mm (2.4 in) |
| 2014 | 61.5 mm (2.4 in) |
| 2015 | 60.5 mm (2.4 in) |
| 2016 | 64.3 mm (2.5 in) |
| 2017 | 60.7 mm (2.4 in) |
| 2018 | 34.0 mm (1.3 in) |
| 2019 | 33.0 mm (1.3 in) |
| 2020 | 80.8 mm (3.2 in) |
| 2021 | 77.0 mm (3.0 in) |
| 2022 | 42.9 mm (1.7 in) |
| 2023 | 55.1 mm (2.2 in) |
| 2024 | 36.6 mm (1.4 in) |
| 2025 | 80.0 mm (3.1 in) |
| 2026 | 76.5 mm (3.0 in) |
Wettest five days (Rx5day)
| Year | Wettest five days (Rx5day) |
|---|---|
| 1926 | 55.2 mm (2.2 in) |
| 1927 | 77.0 mm (3.0 in) |
| 1928 | 79.0 mm (3.1 in) |
| 1929 | 78.8 mm (3.1 in) |
| 1930 | 65.2 mm (2.6 in) |
| 1931 | 57.7 mm (2.3 in) |
| 1932 | 51.3 mm (2.0 in) |
| 1933 | 57.2 mm (2.3 in) |
| 1934 | 74.4 mm (2.9 in) |
| 1935 | 61.4 mm (2.4 in) |
| 1936 | 82.6 mm (3.3 in) |
| 1937 | 102.4 mm (4.0 in) |
| 1938 | 85.1 mm (3.4 in) |
| 1939 | 43.9 mm (1.7 in) |
| 1940 | 40.3 mm (1.6 in) |
| 1941 | 49.0 mm (1.9 in) |
| 1942 | 76.9 mm (3.0 in) |
| 1943 | 65.3 mm (2.6 in) |
| 1944 | 79.3 mm (3.1 in) |
| 1945 | 98.1 mm (3.9 in) |
| 1946 | 48.6 mm (1.9 in) |
| 1947 | 96.7 mm (3.8 in) |
| 1948 | 46.8 mm (1.8 in) |
| 1949 | 55.3 mm (2.2 in) |
| 1950 | 80.6 mm (3.2 in) |
| 1951 | 50.7 mm (2.0 in) |
| 1952 | 54.7 mm (2.2 in) |
| 1953 | 61.7 mm (2.4 in) |
| 1954 | 57.5 mm (2.3 in) |
| 1955 | 99.4 mm (3.9 in) |
| 1956 | 79.8 mm (3.1 in) |
| 1957 | 54.8 mm (2.2 in) |
| 1958 | 68.5 mm (2.7 in) |
| 1959 | 76.9 mm (3.0 in) |
| 1960 | 58.9 mm (2.3 in) |
| 1961 | 55.4 mm (2.2 in) |
| 1962 | 61.0 mm (2.4 in) |
| 1963 | 56.8 mm (2.2 in) |
| 1964 | 46.5 mm (1.8 in) |
| 1965 | 45.5 mm (1.8 in) |
| 1966 | 58.7 mm (2.3 in) |
| 1967 | 73.7 mm (2.9 in) |
| 1968 | 76.7 mm (3.0 in) |
| 1969 | 50.5 mm (2.0 in) |
| 1970 | 67.1 mm (2.6 in) |
| 1971 | 63.8 mm (2.5 in) |
| 1972 | 106.1 mm (4.2 in) |
| 1973 | 52.2 mm (2.1 in) |
| 1974 | 109.4 mm (4.3 in) |
| 1975 | 55.7 mm (2.2 in) |
| 1976 | 74.7 mm (2.9 in) |
| 1977 | 59.2 mm (2.3 in) |
| 1978 | 58.6 mm (2.3 in) |
| 1979 | 98.3 mm (3.9 in) |
| 1980 | 112.8 mm (4.4 in) |
| 1981 | 63.2 mm (2.5 in) |
| 1982 | 71.8 mm (2.8 in) |
| 1983 | 71.8 mm (2.8 in) |
| 1984 | 59.2 mm (2.3 in) |
| 1985 | 88.5 mm (3.5 in) |
| 1986 | 76.2 mm (3.0 in) |
| 1987 | 97.3 mm (3.8 in) |
| 1988 | 66.8 mm (2.6 in) |
| 1989 | 73.9 mm (2.9 in) |
| 1990 | 71.6 mm (2.8 in) |
| 1991 | 68.7 mm (2.7 in) |
| 1992 | 65.0 mm (2.6 in) |
| 1993 | 58.5 mm (2.3 in) |
| 1994 | 68.9 mm (2.7 in) |
| 1995 | 80.3 mm (3.2 in) |
| 1996 | 95.0 mm (3.7 in) |
| 1997 | 69.4 mm (2.7 in) |
| 1998 | 122.2 mm (4.8 in) |
| 1999 | 74.1 mm (2.9 in) |
| 2000 | 81.5 mm (3.2 in) |
| 2001 | 71.4 mm (2.8 in) |
| 2002 | 70.8 mm (2.8 in) |
| 2003 | 52.8 mm (2.1 in) |
| 2004 | 104.6 mm (4.1 in) |
| 2005 | 80.2 mm (3.2 in) |
| 2006 | 107.7 mm (4.2 in) |
| 2007 | 55.1 mm (2.2 in) |
| 2008 | 70.6 mm (2.8 in) |
| 2009 | 72.6 mm (2.9 in) |
| 2010 | 105.4 mm (4.1 in) |
| 2011 | 62.6 mm (2.5 in) |
| 2012 | 73.8 mm (2.9 in) |
| 2013 | 81.3 mm (3.2 in) |
| 2014 | 102.5 mm (4.0 in) |
| 2015 | 68.5 mm (2.7 in) |
| 2016 | 98.6 mm (3.9 in) |
| 2017 | 77.7 mm (3.1 in) |
| 2018 | 61.3 mm (2.4 in) |
| 2019 | 49.2 mm (1.9 in) |
| 2020 | 81.6 mm (3.2 in) |
| 2021 | 98.4 mm (3.9 in) |
| 2022 | 64.3 mm (2.5 in) |
| 2023 | 80.8 mm (3.2 in) |
| 2024 | 62.0 mm (2.4 in) |
| 2025 | 88.7 mm (3.5 in) |
| 2026 | 81.8 mm (3.2 in) |
Longest dry spell (CDD)
| Year | Longest dry spell (CDD) |
|---|---|
| 1926 | 10 days |
| 1927 | 25 days |
| 1928 | 17 days |
| 1929 | 16 days |
| 1930 | 19 days |
| 1931 | 17 days |
| 1932 | 18 days |
| 1933 | 18 days |
| 1934 | 22 days |
| 1935 | 18 days |
| 1936 | 25 days |
| 1937 | 22 days |
| 1938 | 14 days |
| 1939 | 22 days |
| 1940 | 12 days |
| 1941 | 15 days |
| 1942 | 23 days |
| 1943 | 12 days |
| 1944 | 17 days |
| 1945 | 17 days |
| 1946 | 14 days |
| 1947 | 18 days |
| 1948 | 20 days |
| 1949 | 26 days |
| 1950 | 14 days |
| 1951 | 18 days |
| 1952 | 26 days |
| 1953 | 20 days |
| 1954 | 17 days |
| 1955 | 24 days |
| 1956 | 15 days |
| 1957 | 15 days |
| 1958 | 16 days |
| 1959 | 19 days |
| 1960 | 20 days |
| 1961 | 11 days |
| 1962 | 14 days |
| 1963 | 23 days |
| 1964 | 13 days |
| 1965 | 20 days |
| 1966 | 27 days |
| 1967 | 16 days |
| 1968 | 13 days |
| 1969 | 20 days |
| 1970 | 17 days |
| 1971 | 20 days |
| 1972 | 14 days |
| 1973 | 17 days |
| 1974 | 20 days |
| 1975 | 17 days |
| 1976 | 17 days |
| 1977 | 23 days |
| 1978 | 17 days |
| 1979 | 10 days |
| 1980 | 14 days |
| 1981 | 10 days |
| 1982 | 11 days |
| 1983 | 16 days |
| 1984 | 18 days |
| 1985 | 13 days |
| 1986 | 13 days |
| 1987 | 21 days |
| 1988 | 20 days |
| 1989 | 11 days |
| 1990 | 9 days |
| 1991 | 18 days |
| 1992 | 11 days |
| 1993 | 10 days |
| 1994 | 14 days |
| 1995 | 14 days |
| 1996 | 14 days |
| 1997 | 15 days |
| 1998 | 13 days |
| 1999 | 14 days |
| 2000 | 16 days |
| 2001 | 16 days |
| 2002 | 16 days |
| 2003 | 15 days |
| 2004 | 14 days |
| 2005 | 17 days |
| 2006 | 16 days |
| 2007 | 17 days |
| 2008 | 12 days |
| 2009 | 23 days |
| 2010 | 15 days |
| 2011 | 17 days |
| 2012 | 17 days |
| 2013 | 12 days |
| 2014 | 14 days |
| 2015 | 19 days |
| 2016 | 13 days |
| 2017 | 22 days |
| 2018 | 11 days |
| 2019 | 14 days |
| 2020 | 15 days |
| 2021 | 16 days |
| 2022 | 11 days |
| 2023 | 22 days |
| 2024 | 14 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
100 years with a frostAcross 100 years with a frost, the median last spring frost at Rochester Gtr Intl falls on 29 April and the median first autumn frost on 17 October, which leaves a median of 171 days between them.
In 1996 to 2025 the median growing season was 176 days. That is 1 day fewer than in 1926 to 1955.
Fitted over all years, the growing season changes by +0.1 days per decade at this station.
| Measure | Median, all years | Earliest period (1926 to 1955) | Recent period (1996 to 2025) | Recent against earliest | Fitted trend |
|---|---|---|---|---|---|
| Last spring frost | 29 April | 27 April | 29 April | 2 days later | +0.3 days per decade |
| First autumn frost | 17 October | 17 October | 27 October | 10 days later | +0.4 days per decade |
| Growing days | 171 days | 177 days | 176 days | 1 day fewer | +0.1 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
100 years, 1926 to 2025A day with at least 45.0 mm (1.8 in) of rain is expected about once in 2 years. A day with at least 103.9 mm (4.1 in) of rain is expected about once in 100 years.
| Expected about once in | A day with at least | Note |
|---|---|---|
| 2 years | 45.0 mm (1.8 in) | |
| 5 years | 59.4 mm (2.3 in) | |
| 10 years | 69.5 mm (2.7 in) | |
| 25 years | 82.9 mm (3.3 in) | |
| 50 years | 93.2 mm (3.7 in) | |
| 100 years | 103.9 mm (4.1 in) |
The levels come from a generalised extreme value (GEV) distribution fitted by L-moments to the wettest-day total of each year, 100 years of values from 1926 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: 88.1 mm (3.5 in) in 1979; 87.6 mm (3.4 in) in 1974; 84.6 mm (3.3 in) in 2006.
Station Changes
No change in the annual mean temperature of this station was found against its neighbours.
Climate Twins
2011 to 2025 against 1961 to 1990Over 2011 to 2025, Rochester Gtr Intl had a mean temperature of 10.0 C (50.0 F) and 896.6 mm (35.3 in) of rain a year. The 3 stations whose 1961 to 1990 climate was closest to that are Painesville 4 NW (United States, 334 km away), Cleveland (United States, 393 km away) and Berwick (United States, 257 km away).
| Twin station | Country | Distance away | Mean temperature, 1961-1990 | Rain a year, 1961-1990 | Climate difference |
|---|---|---|---|---|---|
| Painesville 4 NW | United States | 334 km (208 mi) | 10.2 C (50.4 F) | 923.0 mm (36.3 in) | 0.60 |
| Cleveland | United States | 393 km (244 mi) | 9.8 C (49.6 F) | 931.3 mm (36.7 in) | 0.67 |
| Berwick | United States | 257 km (160 mi) | 10.1 C (50.1 F) | 933.9 mm (36.8 in) | 0.69 |
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).