Grundy Threshold Days by Year (USC00443640)
15 fixed thresholds counted per year at Grundy (USC00443640): hot days, frost, tropical nights and heavy rain, with the most days in a year.
Key Facts for Grundy Thresholds
- Grundy: days with 10 mm (0.39 in) or more of precipitation in 63 years, most in 1971 with 52.
- Grundy: days with 25 mm (0.98 in) or more of precipitation in 63 years, most in 1994 with 17.
- Grundy: days with a maximum temperature at or above 30 C (86 F) in 58 years, most in 1969 with 120.
- Grundy: days with a maximum temperature at or below 0 C (32 F) in 58 years, most in 2010 with 40.
- 15 fixed thresholds have at least one qualifying day at Grundy.
Days at or above 30 C (86 F)
58 years with a qualifying day| Year | Days | Decade average |
|---|---|---|
| 1961 | 67 | 92.2 |
| 1962 | 101 | 92.2 |
| 1963 | 86 | 92.2 |
| 1967 | 87 | 92.2 |
| 1969 | 120 | 92.2 |
| 1971 | 61 | 50.6 |
| 1972 | 42 | 50.6 |
| 1975 | 47 | 50.6 |
| 1976 | 45 | 50.6 |
| 1977 | 63 | 50.6 |
| 1978 | 61 | 50.6 |
| 1979 | 35 | 50.6 |
| 1980 | 67 | 61.9 |
| 1981 | 52 | 61.9 |
| 1982 | 42 | 61.9 |
| 1983 | 70 | 61.9 |
| 1984 | 56 | 61.9 |
| 1985 | 55 | 61.9 |
| 1986 | 73 | 61.9 |
| 1987 | 64 | 61.9 |
| 1988 | 77 | 61.9 |
| 1989 | 63 | 61.9 |
| 1990 | 70 | 82.3 |
| 1991 | 92 | 82.3 |
| 1992 | 63 | 82.3 |
| 1993 | 88 | 82.3 |
| 1994 | 75 | 82.3 |
| 1995 | 98 | 82.3 |
| 1996 | 73 | 82.3 |
| 1997 | 70 | 82.3 |
| 1998 | 103 | 82.3 |
| 1999 | 91 | 82.3 |
| 2000 | 68 | 34.3 |
| 2001 | 65 | 34.3 |
| 2002 | 30 | 34.3 |
| 2003 | 11 | 34.3 |
| 2004 | 16 | 34.3 |
| 2005 | 30 | 34.3 |
| 2006 | 23 | 34.3 |
| 2007 | 64 | 34.3 |
| 2008 | 29 | 34.3 |
| 2009 | 7 | 34.3 |
| 2010 | 44 | 29.1 |
| 2011 | 21 | 29.1 |
| 2012 | 15 | 29.1 |
| 2013 | 7 | 29.1 |
| 2014 | 18 | 29.1 |
| 2015 | 18 | 29.1 |
| 2016 | 58 | 29.1 |
| 2017 | 32 | 29.1 |
| 2018 | 36 | 29.1 |
| 2019 | 42 | 29.1 |
| 2021 | 18 | 36.5 |
| 2022 | 42 | 36.5 |
| 2023 | 26 | 36.5 |
| 2024 | 51 | 36.5 |
| 2025 | 40 | 36.5 |
| 2026 | 42 | 36.5 |
| Year | First date | Last date |
|---|---|---|
| 1961 | 1961-04-24 | 1961-09-25 |
| 1962 | 1962-04-25 | 1962-10-13 |
| 1963 | 1963-03-30 | 1963-10-24 |
| 1967 | 1967-03-13 | 1967-10-05 |
| 1969 | 1969-04-16 | 1969-10-13 |
| 1971 | 1971-05-19 | 1971-09-30 |
| 1972 | 1972-05-26 | 1972-09-17 |
| 1975 | 1975-05-22 | 1975-09-11 |
| 1976 | 1976-04-16 | 1976-09-10 |
| 1977 | 1977-04-19 | 1977-09-10 |
| 1978 | 1978-05-21 | 1978-09-22 |
| 1979 | 1979-05-09 | 1979-09-12 |
| 1980 | 1980-04-03 | 1980-09-17 |
| 1981 | 1981-04-14 | 1981-09-15 |
| 1982 | 1982-05-07 | 1982-09-13 |
| 1983 | 1983-05-08 | 1983-09-20 |
| 1984 | 1984-04-27 | 1984-09-26 |
| 1985 | 1985-03-31 | 1985-09-24 |
| 1986 | 1986-04-27 | 1986-09-30 |
| 1987 | 1987-04-23 | 1987-09-11 |
| 1988 | 1988-04-06 | 1988-09-24 |
| 1989 | 1989-03-29 | 1989-10-16 |
| 1990 | 1990-03-15 | 1990-10-10 |
| 1991 | 1991-04-19 | 1991-10-26 |
| 1992 | 1992-04-24 | 1992-10-15 |
| 1993 | 1993-05-10 | 1993-09-16 |
| 1994 | 1994-04-20 | 1994-10-02 |
| 1995 | 1995-04-10 | 1995-10-07 |
| 1996 | 1996-04-30 | 1996-10-16 |
| 1997 | 1997-05-19 | 1997-10-14 |
| 1998 | 1998-03-28 | 1998-10-18 |
| 1999 | 1999-04-04 | 1999-10-08 |
| 2000 | 2000-05-04 | 2000-10-06 |
| 2001 | 2001-04-09 | 2001-09-24 |
| 2002 | 2002-04-17 | 2002-10-05 |
| 2003 | 2003-06-27 | 2003-08-29 |
| 2004 | 2004-04-19 | 2004-08-29 |
| 2005 | 2005-06-07 | 2005-09-25 |
| 2006 | 2006-04-15 | 2006-08-20 |
| 2007 | 2007-05-01 | 2007-10-09 |
| 2008 | 2008-06-05 | 2008-09-15 |
| 2009 | 2009-04-25 | 2009-08-11 |
| 2010 | 2010-04-03 | 2010-09-25 |
| 2011 | 2011-05-30 | 2011-09-04 |
| 2012 | 2012-05-03 | 2012-09-02 |
| 2013 | 2013-04-11 | 2013-09-01 |
| 2014 | 2014-05-07 | 2014-09-07 |
| 2015 | 2015-05-12 | 2015-09-05 |
| 2016 | 2016-06-12 | 2016-09-25 |
| 2017 | 2017-04-29 | 2017-08-18 |
| 2018 | 2018-05-04 | 2018-09-08 |
| 2019 | 2019-05-02 | 2019-10-04 |
| 2021 | 2021-04-28 | 2021-08-30 |
| 2022 | 2022-04-24 | 2022-08-30 |
| 2023 | 2023-04-14 | 2023-09-07 |
| 2024 | 2024-04-29 | 2024-09-23 |
| 2025 | 2025-04-19 | 2025-10-19 |
| 2026 | 2026-03-23 | 2026-09-18 |
Every Fixed Threshold
| Threshold | Years with a qualifying day | Most days in a year | Year | Latest year days |
|---|---|---|---|---|
| 30 C (86 F): Days | 58 | 120 | 1969 | 42 |
| 35 C (95 F): Days | 26 | 29 | 1995 | 2 |
| 90 F (32.2 C): Days | 52 | 90 | 1969 | 10 |
| 100 F (37.8 C): Days | 4 | 4 | 1969 | 1 |
| 0 C (32 F): Ice days (max | 58 | 40 | 2010 | 18 |
| 0 C (32 F): Frost days (min | 44 | 127 | 2013 | 66 |
| -10 C (14 F): Days with min | 42 | 39 | 1977 | 15 |
| -20 C (-4 F): Days with min | 9 | 4 | 1982 | 2 |
| 20 C (68 F): Tropical nights (min | 42 | 27 | 1980 | 10 |
| 10 mm (0.39 in): Days with 10 mm or more rain | 63 | 52 | 1971 | 31 |
| 25 mm (0.98 in): Days with 25 mm or more rain | 63 | 17 | 1994 | 8 |
| 50 mm (1.97 in): Days with 50 mm or more rain | 44 | 4 | 2021 | 1 |
| 100 mm (3.94 in): Days with 100 mm or more rain | 3 | 1 | 1979 | 1 |
| 10 cm (3.9 in): Days with 10 cm or more snowfall | 29 | 6 | 1987 | 2 |
| 25 cm (9.8 in): Days with 25 cm or more snowfall | 6 | 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 1961.
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).