Rochester Ferry Threshold Days by Year (USC00156882)
16 fixed thresholds counted per year at Rochester Ferry (USC00156882): hot days, frost, tropical nights and heavy rain, with the most days in a year.
Key Facts for Rochester Ferry Thresholds
- Rochester Ferry: days with 10 mm (0.39 in) or more of precipitation in 64 years, most in 2019 with 56.
- Rochester Ferry: days with 25 mm (0.98 in) or more of precipitation in 64 years, most in 2019 with 25.
- Rochester Ferry: days with 50 mm (1.97 in) or more of precipitation in 60 years, most in 1957 with 9.
- Rochester Ferry: days with a maximum temperature at or above 30 C (86 F) in 44 years, most in 2007 with 127.
- 16 fixed thresholds have at least one qualifying day at Rochester Ferry.
Days at or above 30 C (86 F)
44 years with a qualifying day| Year | Days | Decade average |
|---|---|---|
| 1965 | 77 | 59.6 |
| 1966 | 60 | 59.6 |
| 1967 | 33 | 59.6 |
| 1968 | 58 | 59.6 |
| 1969 | 70 | 59.6 |
| 1971 | 53 | 59.5 |
| 1972 | 58 | 59.5 |
| 1973 | 62 | 59.5 |
| 1974 | 41 | 59.5 |
| 1975 | 75 | 59.5 |
| 1976 | 35 | 59.5 |
| 1977 | 76 | 59.5 |
| 1978 | 76 | 59.5 |
| 1983 | 90 | 87.5 |
| 1984 | 79 | 87.5 |
| 1985 | 78 | 87.5 |
| 1986 | 86 | 87.5 |
| 1987 | 110 | 87.5 |
| 1988 | 82 | 87.5 |
| 1990 | 65 | 79.9 |
| 1991 | 81 | 79.9 |
| 1992 | 53 | 79.9 |
| 1993 | 90 | 79.9 |
| 1994 | 80 | 79.9 |
| 1995 | 94 | 79.9 |
| 1996 | 69 | 79.9 |
| 1997 | 66 | 79.9 |
| 1998 | 107 | 79.9 |
| 1999 | 94 | 79.9 |
| 2000 | 59 | 86.7 |
| 2001 | 79 | 86.7 |
| 2002 | 107 | 86.7 |
| 2003 | 60 | 86.7 |
| 2004 | 64 | 86.7 |
| 2005 | 106 | 86.7 |
| 2006 | 85 | 86.7 |
| 2007 | 127 | 86.7 |
| 2008 | 93 | 86.7 |
| 2015 | 56 | 79.8 |
| 2017 | 63 | 79.8 |
| 2018 | 102 | 79.8 |
| 2019 | 98 | 79.8 |
| 2020 | 66 | 75.5 |
| 2022 | 85 | 75.5 |
| Year | First date | Last date |
|---|---|---|
| 1965 | 1965-04-23 | 1965-09-22 |
| 1966 | 1966-05-09 | 1966-09-11 |
| 1967 | 1967-04-17 | 1967-09-21 |
| 1968 | 1968-06-06 | 1968-09-24 |
| 1969 | 1969-05-06 | 1969-09-07 |
| 1971 | 1971-04-20 | 1971-10-02 |
| 1972 | 1972-05-23 | 1972-09-22 |
| 1973 | 1973-06-04 | 1973-10-05 |
| 1974 | 1974-05-19 | 1974-08-29 |
| 1975 | 1975-05-21 | 1975-09-06 |
| 1976 | 1976-06-10 | 1976-08-29 |
| 1977 | 1977-04-16 | 1977-09-10 |
| 1978 | 1978-04-10 | 1978-09-22 |
| 1983 | 1983-06-10 | 1983-10-04 |
| 1984 | 1984-06-03 | 1984-09-23 |
| 1985 | 1985-04-19 | 1985-10-14 |
| 1986 | 1986-04-26 | 1986-10-04 |
| 1987 | 1987-04-21 | 1987-09-28 |
| 1988 | 1988-04-05 | 1988-09-24 |
| 1990 | 1990-04-25 | 1990-09-30 |
| 1991 | 1991-05-16 | 1991-09-17 |
| 1992 | 1992-04-15 | 1992-10-24 |
| 1993 | 1993-05-07 | 1993-09-15 |
| 1994 | 1994-04-26 | 1994-09-21 |
| 1995 | 1995-04-11 | 1995-09-15 |
| 1996 | 1996-05-10 | 1996-09-09 |
| 1997 | 1997-06-20 | 1997-10-06 |
| 1998 | 1998-03-30 | 1998-10-01 |
| 1999 | 1999-05-18 | 1999-09-29 |
| 2000 | 2000-05-13 | 2000-09-23 |
| 2001 | 2001-04-08 | 2001-09-10 |
| 2002 | 2002-04-17 | 2002-10-04 |
| 2003 | 2003-05-10 | 2003-09-18 |
| 2004 | 2004-05-07 | 2004-09-25 |
| 2005 | 2005-05-09 | 2005-10-20 |
| 2006 | 2006-04-14 | 2006-10-05 |
| 2007 | 2007-03-26 | 2007-10-09 |
| 2008 | 2008-05-26 | 2008-10-13 |
| 2015 | 2015-05-09 | 2015-09-19 |
| 2017 | 2017-04-30 | 2017-09-28 |
| 2018 | 2018-05-05 | 2018-10-10 |
| 2019 | 2019-05-17 | 2019-10-06 |
| 2020 | 2020-05-24 | 2020-09-13 |
| 2022 | 2022-04-24 | 2022-09-21 |
Every Fixed Threshold
| Threshold | Years with a qualifying day | Most days in a year | Year | Latest year days |
|---|---|---|---|---|
| 30 C (86 F): Days | 44 | 127 | 2007 | 85 |
| 35 C (95 F): Days | 39 | 31 | 2007 | 23 |
| 40 C (104 F): Days | 2 | 2 | 1988 | 2 |
| 90 F (32.2 C): Days | 44 | 77 | 2007 | 48 |
| 100 F (37.8 C): Days | 9 | 9 | 2007 | 9 |
| 0 C (32 F): Ice days (max | 43 | 33 | 1977 | 7 |
| 0 C (32 F): Frost days (min | 31 | 124 | 1966 | 64 |
| -10 C (14 F): Days with min | 30 | 38 | 1977 | 8 |
| -20 C (-4 F): Days with min | 13 | 9 | 1977 | 2 |
| 20 C (68 F): Tropical nights (min | 31 | 58 | 1977 | 35 |
| 25 C (77 F): Days with min | 3 | 1 | 1969 | 1 |
| 10 mm (0.39 in): Days with 10 mm or more rain | 64 | 56 | 2019 | 27 |
| 25 mm (0.98 in): Days with 25 mm or more rain | 64 | 25 | 2019 | 15 |
| 50 mm (1.97 in): Days with 50 mm or more rain | 60 | 9 | 1957 | 4 |
| 100 mm (3.94 in): Days with 100 mm or more rain | 16 | 2 | 2025 | 2 |
| 10 cm (3.9 in): Days with 10 cm or more snowfall | 5 | 2 | 1963 | 1 |
Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1965.
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 2026-10-17 (17 October 2026). Threshold counts are computed by this site.
Data as of . Last revised (2026-10-12).