Chester Threshold Days by Year (USC00041700)
17 fixed thresholds counted per year at Chester (USC00041700): hot days, frost, tropical nights and heavy rain, with the most days in a year.
Key Facts for Chester Thresholds
- Chester: days with 10 mm (0.39 in) or more of precipitation in 97 years, most in 1983 with 52.
- Chester: days with 25 mm (0.98 in) or more of precipitation in 96 years, most in 1983 with 19.
- Chester: days with 50 mm (1.97 in) or more of precipitation in 72 years, most in 1995 with 9.
- Chester: days with 10 cm (3.9 in) or more of snowfall in 68 years, most in 1952 with 34.
- 17 fixed thresholds have at least one qualifying day at Chester.
Days at or above 30 C (86 F)
60 years with a qualifying day| Year | Days | Decade average |
|---|---|---|
| 1958 | 45 | 51 |
| 1959 | 57 | 51 |
| 1960 | 59 | 45.2 |
| 1961 | 54 | 45.2 |
| 1962 | 52 | 45.2 |
| 1963 | 17 | 45.2 |
| 1965 | 19 | 45.2 |
| 1966 | 45 | 45.2 |
| 1967 | 56 | 45.2 |
| 1968 | 54 | 45.2 |
| 1969 | 51 | 45.2 |
| 1970 | 60 | 46 |
| 1971 | 49 | 46 |
| 1972 | 52 | 46 |
| 1973 | 46 | 46 |
| 1974 | 63 | 46 |
| 1975 | 38 | 46 |
| 1976 | 32 | 46 |
| 1977 | 54 | 46 |
| 1978 | 28 | 46 |
| 1979 | 38 | 46 |
| 1980 | 31 | 37.8 |
| 1981 | 60 | 37.8 |
| 1982 | 18 | 37.8 |
| 1983 | 21 | 37.8 |
| 1984 | 47 | 37.8 |
| 1985 | 47 | 37.8 |
| 1986 | 43 | 37.8 |
| 1987 | 44 | 37.8 |
| 1988 | 53 | 37.8 |
| 1989 | 14 | 37.8 |
| 1990 | 35 | 30.3 |
| 1991 | 38 | 30.3 |
| 1992 | 42 | 30.3 |
| 1993 | 20 | 30.3 |
| 1994 | 47 | 30.3 |
| 1995 | 23 | 30.3 |
| 1996 | 47 | 30.3 |
| 1997 | 21 | 30.3 |
| 1998 | 21 | 30.3 |
| 1999 | 9 | 30.3 |
| 2000 | 32 | 42.8 |
| 2001 | 36 | 42.8 |
| 2004 | 40 | 42.8 |
| 2006 | 49 | 42.8 |
| 2009 | 57 | 42.8 |
| 2010 | 48 | 47.9 |
| 2011 | 34 | 47.9 |
| 2012 | 47 | 47.9 |
| 2013 | 46 | 47.9 |
| 2014 | 50 | 47.9 |
| 2015 | 50 | 47.9 |
| 2016 | 45 | 47.9 |
| 2017 | 69 | 47.9 |
| 2018 | 57 | 47.9 |
| 2019 | 33 | 47.9 |
| 2020 | 59 | 63.8 |
| 2022 | 58 | 63.8 |
| 2024 | 107 | 63.8 |
| 2025 | 31 | 63.8 |
| Year | First date | Last date |
|---|---|---|
| 1958 | 1958-05-19 | 1958-09-07 |
| 1959 | 1959-06-18 | 1959-10-23 |
| 1960 | 1960-06-01 | 1960-09-26 |
| 1961 | 1961-06-13 | 1961-08-24 |
| 1962 | 1962-06-18 | 1962-10-02 |
| 1963 | 1963-05-19 | 1963-09-27 |
| 1965 | 1965-07-06 | 1965-08-07 |
| 1966 | 1966-06-13 | 1966-09-29 |
| 1967 | 1967-05-21 | 1967-09-28 |
| 1968 | 1968-06-16 | 1968-09-26 |
| 1969 | 1969-06-02 | 1969-09-12 |
| 1970 | 1970-06-01 | 1970-10-03 |
| 1971 | 1971-07-13 | 1971-09-17 |
| 1972 | 1972-05-27 | 1972-09-02 |
| 1973 | 1973-05-17 | 1973-09-12 |
| 1974 | 1974-05-26 | 1974-10-17 |
| 1975 | 1975-05-30 | 1975-09-24 |
| 1976 | 1976-06-18 | 1976-09-10 |
| 1977 | 1977-06-05 | 1977-09-09 |
| 1978 | 1978-06-06 | 1978-08-11 |
| 1979 | 1979-06-03 | 1979-10-04 |
| 1980 | 1980-07-16 | 1980-10-05 |
| 1981 | 1981-06-19 | 1981-09-17 |
| 1982 | 1982-06-16 | 1982-09-08 |
| 1983 | 1983-05-26 | 1983-09-16 |
| 1984 | 1984-05-28 | 1984-09-18 |
| 1985 | 1985-06-11 | 1985-08-26 |
| 1986 | 1986-05-28 | 1986-09-07 |
| 1987 | 1987-06-03 | 1987-10-04 |
| 1988 | 1988-06-15 | 1988-09-30 |
| 1989 | 1989-06-22 | 1989-08-16 |
| 1990 | 1990-06-21 | 1990-09-11 |
| 1991 | 1991-06-10 | 1991-09-25 |
| 1992 | 1992-05-24 | 1992-09-21 |
| 1993 | 1993-06-25 | 1993-09-10 |
| 1994 | 1994-06-10 | 1994-09-27 |
| 1995 | 1995-06-24 | 1995-09-20 |
| 1996 | 1996-06-03 | 1996-10-09 |
| 1997 | 1997-07-07 | 1997-08-15 |
| 1998 | 1998-07-16 | 1998-09-04 |
| 1999 | 1999-06-30 | 1999-08-25 |
| 2000 | 2000-06-14 | 2000-09-20 |
| 2001 | 2001-05-22 | 2001-10-02 |
| 2004 | 2004-06-23 | 2004-09-12 |
| 2006 | 2006-05-17 | 2006-09-14 |
| 2009 | 2009-05-18 | 2009-09-28 |
| 2010 | 2010-06-27 | 2010-10-03 |
| 2011 | 2011-06-21 | 2011-09-24 |
| 2012 | 2012-06-01 | 2012-10-03 |
| 2013 | 2013-06-05 | 2013-09-15 |
| 2014 | 2014-06-06 | 2014-10-04 |
| 2015 | 2015-06-09 | 2015-10-15 |
| 2016 | 2016-06-04 | 2016-09-28 |
| 2017 | 2017-05-05 | 2017-09-12 |
| 2018 | 2018-06-13 | 2018-09-28 |
| 2019 | 2019-06-11 | 2019-09-05 |
| 2020 | 2020-05-28 | 2020-10-04 |
| 2022 | 2022-06-23 | 2022-09-11 |
| 2024 | 2024-05-18 | 2024-10-01 |
| 2025 | 2025-06-07 | 2025-08-30 |
Every Fixed Threshold
| Threshold | Years with a qualifying day | Most days in a year | Year | Latest year days |
|---|---|---|---|---|
| 30 C (86 F): Days | 60 | 107 | 2024 | 31 |
| 35 C (95 F): Days | 41 | 49 | 2024 | 3 |
| 40 C (104 F): Days | 1 | 3 | 2024 | 3 |
| 90 F (32.2 C): Days | 60 | 84 | 2024 | 15 |
| 100 F (37.8 C): Days | 7 | 7 | 2024 | 7 |
| 0 C (32 F): Ice days (max | 56 | 34 | 1998 | 2 |
| 0 C (32 F): Frost days (min | 61 | 237 | 1961 | 49 |
| -10 C (14 F): Days with min | 59 | 45 | 1990 | 10 |
| -20 C (-4 F): Days with min | 16 | 8 | 1972 | 3 |
| 20 C (68 F): Tropical nights (min | 2 | 6 | 2024 | 6 |
| 10 mm (0.39 in): Days with 10 mm or more rain | 97 | 52 | 1983 | 12 |
| 25 mm (0.98 in): Days with 25 mm or more rain | 96 | 19 | 1983 | 4 |
| 50 mm (1.97 in): Days with 50 mm or more rain | 72 | 9 | 1995 | 1 |
| 100 mm (3.94 in): Days with 100 mm or more rain | 5 | 3 | 2024 | 3 |
| 10 cm (3.9 in): Days with 10 cm or more snowfall | 68 | 34 | 1952 | 2 |
| 25 cm (9.8 in): Days with 25 cm or more snowfall | 63 | 14 | 1952 | 1 |
| 50 cm (19.7 in): Days with 50 cm or more snowfall | 19 | 3 | 1952 | 1 |
Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1958.
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 (2025-12-31).