Slippery Rock 1 SSW Threshold Days by Year (USC00368184)
16 fixed thresholds counted per year at Slippery Rock 1 SSW (USC00368184): hot days, frost, tropical nights and heavy rain, with the most days in a year.
Key Facts for Slippery Rock 1 SSW Thresholds
- Slippery Rock 1 SSW: days with a maximum temperature at or above 30 C (86 F) in 73 years, most in 2012 with 69.
- Slippery Rock 1 SSW: days with a maximum temperature at or below 0 C (32 F) in 73 years, most in 1960 with 65.
- Slippery Rock 1 SSW: nights with a minimum temperature at or below 0 C (32 F) in 73 years, most in 1981 with 182.
- Slippery Rock 1 SSW: nights with a minimum temperature at or below -10 C (14 F) in 73 years, most in 1978 with 65.
- 16 fixed thresholds have at least one qualifying day at Slippery Rock 1 SSW.
Days at or above 30 C (86 F)
73 years with a qualifying day| Year | Days | Decade average |
|---|---|---|
| 1950 | 13 | 28.9 |
| 1951 | 20 | 28.9 |
| 1952 | 42 | 28.9 |
| 1953 | 37 | 28.9 |
| 1954 | 24 | 28.9 |
| 1955 | 50 | 28.9 |
| 1956 | 14 | 28.9 |
| 1957 | 28 | 28.9 |
| 1958 | 10 | 28.9 |
| 1959 | 51 | 28.9 |
| 1960 | 20 | 25.8 |
| 1961 | 33 | 25.8 |
| 1962 | 24 | 25.8 |
| 1963 | 18 | 25.8 |
| 1964 | 39 | 25.8 |
| 1965 | 27 | 25.8 |
| 1966 | 40 | 25.8 |
| 1967 | 17 | 25.8 |
| 1968 | 21 | 25.8 |
| 1969 | 19 | 25.8 |
| 1970 | 27 | 17.5 |
| 1971 | 19 | 17.5 |
| 1972 | 17 | 17.5 |
| 1973 | 27 | 17.5 |
| 1974 | 4 | 17.5 |
| 1975 | 19 | 17.5 |
| 1976 | 14 | 17.5 |
| 1977 | 17 | 17.5 |
| 1978 | 16 | 17.5 |
| 1979 | 15 | 17.5 |
| 1980 | 18 | 22.3 |
| 1981 | 9 | 22.3 |
| 1982 | 20 | 22.3 |
| 1983 | 41 | 22.3 |
| 1984 | 9 | 22.3 |
| 1985 | 12 | 22.3 |
| 1986 | 14 | 22.3 |
| 1987 | 33 | 22.3 |
| 1988 | 47 | 22.3 |
| 1989 | 20 | 22.3 |
| 1990 | 19 | 30.1 |
| 1991 | 46 | 30.1 |
| 1992 | 10 | 30.1 |
| 1993 | 30 | 30.1 |
| 1994 | 22 | 30.1 |
| 1995 | 41 | 30.1 |
| 1996 | 22 | 30.1 |
| 1997 | 24 | 30.1 |
| 1998 | 41 | 30.1 |
| 1999 | 46 | 30.1 |
| 2000 | 11 | 32.1 |
| 2001 | 40 | 32.1 |
| 2002 | 55 | 32.1 |
| 2003 | 19 | 32.1 |
| 2004 | 13 | 32.1 |
| 2005 | 49 | 32.1 |
| 2006 | 32 | 32.1 |
| 2007 | 54 | 32.1 |
| 2008 | 27 | 32.1 |
| 2009 | 21 | 32.1 |
| 2010 | 66 | 42.1 |
| 2011 | 53 | 42.1 |
| 2012 | 69 | 42.1 |
| 2013 | 39 | 42.1 |
| 2014 | 60 | 42.1 |
| 2016 | 33 | 42.1 |
| 2017 | 15 | 42.1 |
| 2018 | 24 | 42.1 |
| 2019 | 20 | 42.1 |
| 2021 | 22 | 18.3 |
| 2023 | 11 | 18.3 |
| 2025 | 25 | 18.3 |
| 2026 | 15 | 18.3 |
| Year | First date | Last date |
|---|---|---|
| 1950 | 1950-05-06 | 1950-08-29 |
| 1951 | 1951-06-02 | 1951-10-06 |
| 1952 | 1952-06-07 | 1952-09-15 |
| 1953 | 1953-05-10 | 1953-09-30 |
| 1954 | 1954-06-10 | 1954-09-29 |
| 1955 | 1955-05-27 | 1955-09-19 |
| 1956 | 1956-06-12 | 1956-09-01 |
| 1957 | 1957-06-13 | 1957-09-03 |
| 1958 | 1958-06-05 | 1958-08-13 |
| 1959 | 1959-05-06 | 1959-10-03 |
| 1960 | 1960-06-04 | 1960-09-08 |
| 1961 | 1961-06-12 | 1961-09-24 |
| 1962 | 1962-05-14 | 1962-08-31 |
| 1963 | 1963-04-03 | 1963-07-29 |
| 1964 | 1964-05-22 | 1964-09-10 |
| 1965 | 1965-05-03 | 1965-09-22 |
| 1966 | 1966-06-06 | 1966-09-03 |
| 1967 | 1967-06-09 | 1967-10-05 |
| 1968 | 1968-06-08 | 1968-09-05 |
| 1969 | 1969-05-30 | 1969-09-02 |
| 1970 | 1970-05-01 | 1970-09-25 |
| 1971 | 1971-05-19 | 1971-09-11 |
| 1972 | 1972-05-25 | 1972-09-03 |
| 1973 | 1973-06-11 | 1973-09-06 |
| 1974 | 1974-06-09 | 1974-07-08 |
| 1975 | 1975-05-22 | 1975-08-27 |
| 1976 | 1976-04-19 | 1976-09-10 |
| 1977 | 1977-05-18 | 1977-09-02 |
| 1978 | 1978-05-28 | 1978-09-21 |
| 1979 | 1979-05-09 | 1979-09-05 |
| 1980 | 1980-05-31 | 1980-09-05 |
| 1981 | 1981-06-15 | 1981-07-20 |
| 1982 | 1982-05-18 | 1982-09-13 |
| 1983 | 1983-06-09 | 1983-09-19 |
| 1984 | 1984-06-08 | 1984-07-23 |
| 1985 | 1985-04-23 | 1985-09-09 |
| 1986 | 1986-04-28 | 1986-09-29 |
| 1987 | 1987-05-28 | 1987-08-17 |
| 1988 | 1988-05-29 | 1988-08-17 |
| 1989 | 1989-06-24 | 1989-09-09 |
| 1990 | 1990-04-25 | 1990-08-28 |
| 1991 | 1991-05-15 | 1991-09-16 |
| 1992 | 1992-06-14 | 1992-08-26 |
| 1993 | 1993-06-18 | 1993-09-02 |
| 1994 | 1994-06-14 | 1994-08-22 |
| 1995 | 1995-06-18 | 1995-09-06 |
| 1996 | 1996-05-18 | 1996-09-03 |
| 1997 | 1997-06-20 | 1997-08-12 |
| 1998 | 1998-05-15 | 1998-09-26 |
| 1999 | 1999-05-12 | 1999-09-27 |
| 2000 | 2000-05-07 | 2000-09-20 |
| 2001 | 2001-05-03 | 2001-09-10 |
| 2002 | 2002-04-16 | 2002-09-21 |
| 2003 | 2003-06-23 | 2003-08-29 |
| 2004 | 2004-05-13 | 2004-08-28 |
| 2005 | 2005-06-05 | 2005-09-15 |
| 2006 | 2006-05-28 | 2006-08-26 |
| 2007 | 2007-05-15 | 2007-10-08 |
| 2008 | 2008-06-06 | 2008-09-14 |
| 2009 | 2009-04-25 | 2009-09-20 |
| 2010 | 2010-04-02 | 2010-10-10 |
| 2011 | 2011-05-13 | 2011-10-10 |
| 2012 | 2012-03-24 | 2012-10-26 |
| 2013 | 2013-05-19 | 2013-10-03 |
| 2014 | 2014-05-09 | 2014-10-03 |
| 2016 | 2016-05-29 | 2016-09-24 |
| 2017 | 2017-06-12 | 2017-09-28 |
| 2018 | 2018-05-29 | 2018-09-22 |
| 2019 | 2019-06-28 | 2019-10-04 |
| 2021 | 2021-05-26 | 2021-08-30 |
| 2023 | 2023-05-16 | 2023-09-07 |
| 2025 | 2025-06-23 | 2025-08-17 |
| 2026 | 2026-05-19 | 2026-09-10 |
Every Fixed Threshold
| Threshold | Years with a qualifying day | Most days in a year | Year | Latest year days |
|---|---|---|---|---|
| 30 C (86 F): Days | 73 | 69 | 2012 | 15 |
| 35 C (95 F): Days | 16 | 11 | 1988 | 1 |
| 90 F (32.2 C): Days | 66 | 34 | 1988 | 6 |
| 100 F (37.8 C): Days | 4 | 3 | 1988 | 1 |
| 0 C (32 F): Ice days (max | 73 | 65 | 1960 | 32 |
| 0 C (32 F): Frost days (min | 73 | 182 | 1981 | 84 |
| -10 C (14 F): Days with min | 73 | 65 | 1978 | 33 |
| -20 C (-4 F): Days with min | 56 | 20 | 1979 | 13 |
| -30 C (-22 F): Days with min | 3 | 3 | 1994 | 2 |
| 20 C (68 F): Tropical nights (min | 53 | 20 | 1959 | 13 |
| 10 mm (0.39 in): Days with 10 mm or more rain | 73 | 52 | 2019 | 34 |
| 25 mm (0.98 in): Days with 25 mm or more rain | 73 | 18 | 2003 | 8 |
| 50 mm (1.97 in): Days with 50 mm or more rain | 43 | 4 | 1980 | 3 |
| 100 mm (3.94 in): Days with 100 mm or more rain | 2 | 1 | 2004 | 1 |
| 10 cm (3.9 in): Days with 10 cm or more snowfall | 45 | 7 | 1960 | 2 |
| 25 cm (9.8 in): Days with 25 cm or more snowfall | 8 | 1 | 1950 | 1 |
Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1950.
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 (2026-10-17).