Hyannis Threshold Days by Year
16 fixed thresholds counted per year at Hyannis (USC00193821): hot days, frost, tropical nights and heavy rain, with the most days in a year.
Key Facts for Hyannis Thresholds
- Hyannis: days with 10 mm (0.39 in) or more of precipitation in 92 years, most in 2019 with 54.
- Hyannis: days with 25 mm (0.98 in) or more of precipitation in 92 years, most in 2009 with 21.
- Hyannis: days with a maximum temperature at or below 0 C (32 F) in 91 years, most in 1901 with 38.
- Hyannis: nights with a minimum temperature at or below 0 C (32 F) in 91 years, most in 1965 with 142.
- 16 fixed thresholds have at least one qualifying day at Hyannis.
Days at or above 30 C (86 F)
89 years with a qualifying day| Year | Days | Decade average |
|---|---|---|
| 1893 | 15 | 15 |
| 1894 | 18 | 15 |
| 1895 | 14 | 15 |
| 1896 | 13 | 15 |
| 1900 | 12 | 3.9 |
| 1901 | 2 | 3.9 |
| 1903 | 3 | 3.9 |
| 1905 | 2 | 3.9 |
| 1906 | 1 | 3.9 |
| 1907 | 1 | 3.9 |
| 1908 | 5 | 3.9 |
| 1909 | 5 | 3.9 |
| 1910 | 2 | 2.8 |
| 1911 | 4 | 2.8 |
| 1913 | 4 | 2.8 |
| 1914 | 1 | 2.8 |
| 1931 | 11 | 2.6 |
| 1932 | 1 | 2.6 |
| 1933 | 1 | 2.6 |
| 1934 | 1 | 2.6 |
| 1935 | 1 | 2.6 |
| 1936 | 1 | 2.6 |
| 1937 | 5 | 2.6 |
| 1938 | 1 | 2.6 |
| 1939 | 1 | 2.6 |
| 1940 | 2 | 7 |
| 1941 | 2 | 7 |
| 1943 | 5 | 7 |
| 1947 | 8 | 7 |
| 1949 | 18 | 7 |
| 1950 | 1 | 8.6 |
| 1951 | 3 | 8.6 |
| 1952 | 14 | 8.6 |
| 1953 | 17 | 8.6 |
| 1954 | 3 | 8.6 |
| 1955 | 19 | 8.6 |
| 1956 | 6 | 8.6 |
| 1957 | 10 | 8.6 |
| 1958 | 1 | 8.6 |
| 1959 | 12 | 8.6 |
| 1960 | 4 | 6.4 |
| 1961 | 7 | 6.4 |
| 1962 | 2 | 6.4 |
| 1963 | 15 | 6.4 |
| 1964 | 6 | 6.4 |
| 1965 | 6 | 6.4 |
| 1966 | 5 | 6.4 |
| 1972 | 2 | 5.5 |
| 1974 | 4 | 5.5 |
| 1976 | 2 | 5.5 |
| 1977 | 13 | 5.5 |
| 1978 | 4 | 5.5 |
| 1979 | 8 | 5.5 |
| 1981 | 9 | 8.3 |
| 1982 | 8 | 8.3 |
| 1983 | 19 | 8.3 |
| 1984 | 11 | 8.3 |
| 1985 | 4 | 8.3 |
| 1986 | 3 | 8.3 |
| 1987 | 6 | 8.3 |
| 1988 | 13 | 8.3 |
| 1989 | 2 | 8.3 |
| 1990 | 7 | 7 |
| 1991 | 9 | 7 |
| 1992 | 1 | 7 |
| 1993 | 11 | 7 |
| 1995 | 8 | 7 |
| 1996 | 4 | 7 |
| 1997 | 9 | 7 |
| 2001 | 6 | 7.2 |
| 2002 | 13 | 7.2 |
| 2005 | 7 | 7.2 |
| 2008 | 7 | 7.2 |
| 2009 | 3 | 7.2 |
| 2010 | 19 | 9.6 |
| 2011 | 8 | 9.6 |
| 2012 | 10 | 9.6 |
| 2013 | 22 | 9.6 |
| 2014 | 2 | 9.6 |
| 2015 | 9 | 9.6 |
| 2016 | 15 | 9.6 |
| 2017 | 2 | 9.6 |
| 2018 | 6 | 9.6 |
| 2019 | 3 | 9.6 |
| 2020 | 7 | 10.8 |
| 2021 | 8 | 10.8 |
| 2022 | 18 | 10.8 |
| 2025 | 10 | 10.8 |
| 2026 | 11 | 10.8 |
| Year | First date | Last date |
|---|---|---|
| 1893 | 1893-06-05 | 1893-08-26 |
| 1894 | 1894-05-02 | 1894-07-31 |
| 1895 | 1895-05-31 | 1895-09-23 |
| 1896 | 1896-05-10 | 1896-08-13 |
| 1900 | 1900-06-21 | 1900-09-12 |
| 1901 | 1901-07-01 | 1901-07-03 |
| 1903 | 1903-07-08 | 1903-07-10 |
| 1905 | 1905-07-18 | 1905-07-19 |
| 1906 | 1906-09-16 | 1906-09-16 |
| 1907 | 1907-07-19 | 1907-07-19 |
| 1908 | 1908-07-06 | 1908-07-14 |
| 1909 | 1909-06-24 | 1909-08-08 |
| 1910 | 1910-06-23 | 1910-07-11 |
| 1911 | 1911-07-10 | 1911-07-13 |
| 1913 | 1913-06-16 | 1913-08-03 |
| 1914 | 1914-05-27 | 1914-05-27 |
| 1931 | 1931-05-29 | 1931-09-11 |
| 1932 | 1932-07-10 | 1932-07-10 |
| 1933 | 1933-08-02 | 1933-08-02 |
| 1934 | 1934-07-16 | 1934-07-16 |
| 1935 | 1935-08-18 | 1935-08-18 |
| 1936 | 1936-08-24 | 1936-08-24 |
| 1937 | 1937-07-08 | 1937-08-20 |
| 1938 | 1938-08-03 | 1938-08-03 |
| 1939 | 1939-08-01 | 1939-08-01 |
| 1940 | 1940-07-27 | 1940-07-31 |
| 1941 | 1941-06-21 | 1941-08-09 |
| 1943 | 1943-06-03 | 1943-08-02 |
| 1947 | 1947-07-02 | 1947-09-04 |
| 1949 | 1949-06-23 | 1949-08-11 |
| 1950 | 1950-07-31 | 1950-07-31 |
| 1951 | 1951-06-25 | 1951-07-27 |
| 1952 | 1952-07-13 | 1952-09-13 |
| 1953 | 1953-06-20 | 1953-09-03 |
| 1954 | 1954-07-14 | 1954-08-01 |
| 1955 | 1955-06-16 | 1955-08-21 |
| 1956 | 1956-06-13 | 1956-08-18 |
| 1957 | 1957-06-16 | 1957-08-03 |
| 1958 | 1958-07-02 | 1958-07-02 |
| 1959 | 1959-05-28 | 1959-09-07 |
| 1960 | 1960-06-27 | 1960-08-30 |
| 1961 | 1961-06-13 | 1961-09-13 |
| 1962 | 1962-06-01 | 1962-06-17 |
| 1963 | 1963-06-23 | 1963-07-29 |
| 1964 | 1964-05-23 | 1964-07-08 |
| 1965 | 1965-06-23 | 1965-08-12 |
| 1966 | 1966-07-02 | 1966-08-19 |
| 1972 | 1972-07-13 | 1972-08-25 |
| 1974 | 1974-06-11 | 1974-08-15 |
| 1976 | 1976-08-22 | 1976-08-23 |
| 1977 | 1977-05-23 | 1977-08-15 |
| 1978 | 1978-06-29 | 1978-08-16 |
| 1979 | 1979-05-11 | 1979-08-04 |
| 1981 | 1981-06-18 | 1981-08-14 |
| 1982 | 1982-07-10 | 1982-07-31 |
| 1983 | 1983-06-14 | 1983-09-21 |
| 1984 | 1984-06-09 | 1984-08-17 |
| 1985 | 1985-07-21 | 1985-08-16 |
| 1986 | 1986-05-31 | 1986-07-09 |
| 1987 | 1987-05-31 | 1987-08-19 |
| 1988 | 1988-06-14 | 1988-08-16 |
| 1989 | 1989-09-10 | 1989-09-11 |
| 1990 | 1990-04-29 | 1990-08-05 |
| 1991 | 1991-06-30 | 1991-08-29 |
| 1992 | 1992-07-14 | 1992-07-14 |
| 1993 | 1993-06-20 | 1993-08-28 |
| 1995 | 1995-07-15 | 1995-08-22 |
| 1996 | 1996-05-21 | 1996-05-24 |
| 1997 | 1997-06-12 | 1997-08-02 |
| 2001 | 2001-05-04 | 2001-08-09 |
| 2002 | 2002-04-17 | 2002-08-17 |
| 2005 | 2005-07-12 | 2005-08-23 |
| 2008 | 2008-06-09 | 2008-07-29 |
| 2009 | 2009-08-11 | 2009-08-19 |
| 2010 | 2010-05-27 | 2010-09-03 |
| 2011 | 2011-06-09 | 2011-08-03 |
| 2012 | 2012-06-21 | 2012-08-07 |
| 2013 | 2013-06-01 | 2013-08-26 |
| 2014 | 2014-06-19 | 2014-07-13 |
| 2015 | 2015-07-21 | 2015-09-09 |
| 2016 | 2016-07-07 | 2016-09-10 |
| 2017 | 2017-06-13 | 2017-06-14 |
| 2018 | 2018-07-02 | 2018-09-05 |
| 2019 | 2019-07-15 | 2019-07-22 |
| 2020 | 2020-07-22 | 2020-08-26 |
| 2021 | 2021-06-07 | 2021-08-28 |
| 2022 | 2022-07-14 | 2022-08-27 |
| 2025 | 2025-06-25 | 2025-08-13 |
| 2026 | 2026-06-13 | 2026-08-15 |
Every Fixed Threshold
| Threshold | Years with a qualifying day | Most days in a year | Year | Latest year days |
|---|---|---|---|---|
| 30 C (86 F): Days | 89 | 22 | 2013 | 11 |
| 35 C (95 F): Days | 12 | 3 | 1949 | 2 |
| 90 F (32.2 C): Days | 60 | 12 | 1963 | 3 |
| 0 C (32 F): Ice days (max | 91 | 38 | 1901 | 22 |
| 0 C (32 F): Frost days (min | 91 | 142 | 1965 | 82 |
| -10 C (14 F): Days with min | 91 | 35 | 1977 | 23 |
| -20 C (-4 F): Days with min | 19 | 3 | 1961 | 2 |
| 20 C (68 F): Tropical nights (min | 91 | 37 | 2016 | 18 |
| 25 C (77 F): Days with min | 6 | 1 | 1896 | 1 |
| 10 mm (0.39 in): Days with 10 mm or more rain | 92 | 54 | 2019 | 26 |
| 25 mm (0.98 in): Days with 25 mm or more rain | 92 | 21 | 2009 | 10 |
| 50 mm (1.97 in): Days with 50 mm or more rain | 80 | 7 | 1984 | 2 |
| 100 mm (3.94 in): Days with 100 mm or more rain | 14 | 3 | 2017 | 1 |
| 10 cm (3.9 in): Days with 10 cm or more snowfall | 34 | 5 | 1982 | 3 |
| 25 cm (9.8 in): Days with 25 cm or more snowfall | 13 | 2 | 2005 | 2 |
| 50 cm (19.7 in): Days with 50 cm or more snowfall | 1 | 1 | 2005 | 1 |
Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1893.
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 2026-10-14 (14 October 2026). Threshold counts are computed by this site.
Data as of . Last revised (2026-10-14).