Portsmouth-Sciotoville Threshold Days by Year (USC00336781)
18 fixed thresholds counted per year at Portsmouth-Sciotoville (USC00336781): hot days, frost, tropical nights and heavy rain, with the most days in a year.
Key Facts for Portsmouth-Sciotoville Thresholds
- Portsmouth-Sciotoville: days with a maximum temperature at or above 30 C (86 F) in 130 years, most in 1939 with 110.
- Portsmouth-Sciotoville: days with a maximum temperature at or below 0 C (32 F) in 130 years, most in 1977 with 40.
- Portsmouth-Sciotoville: nights with a minimum temperature at or below 0 C (32 F) in 130 years, most in 1917 with 131.
- Portsmouth-Sciotoville: nights with a minimum temperature at or above 20 C (68 F) in 130 years, most in 1949 with 60.
- 18 fixed thresholds have at least one qualifying day at Portsmouth-Sciotoville.
Days at or above 30 C (86 F)
130 years with a qualifying day| Year | Days | Decade average |
|---|---|---|
| 1893 | 90 | 94 |
| 1894 | 101 | 94 |
| 1895 | 101 | 94 |
| 1896 | 102 | 94 |
| 1897 | 87 | 94 |
| 1898 | 85 | 94 |
| 1899 | 92 | 94 |
| 1900 | 102 | 61.8 |
| 1901 | 67 | 61.8 |
| 1902 | 74 | 61.8 |
| 1903 | 72 | 61.8 |
| 1904 | 50 | 61.8 |
| 1905 | 45 | 61.8 |
| 1906 | 63 | 61.8 |
| 1907 | 43 | 61.8 |
| 1908 | 63 | 61.8 |
| 1909 | 39 | 61.8 |
| 1910 | 44 | 75.5 |
| 1911 | 85 | 75.5 |
| 1912 | 53 | 75.5 |
| 1913 | 91 | 75.5 |
| 1914 | 99 | 75.5 |
| 1915 | 57 | 75.5 |
| 1916 | 91 | 75.5 |
| 1917 | 77 | 75.5 |
| 1918 | 74 | 75.5 |
| 1919 | 84 | 75.5 |
| 1920 | 68 | 79.6 |
| 1921 | 107 | 79.6 |
| 1922 | 92 | 79.6 |
| 1924 | 63 | 79.6 |
| 1925 | 89 | 79.6 |
| 1926 | 77 | 79.6 |
| 1927 | 67 | 79.6 |
| 1928 | 77 | 79.6 |
| 1929 | 76 | 79.6 |
| 1930 | 99 | 93.2 |
| 1931 | 91 | 93.2 |
| 1932 | 94 | 93.2 |
| 1933 | 88 | 93.2 |
| 1934 | 101 | 93.2 |
| 1935 | 72 | 93.2 |
| 1936 | 108 | 93.2 |
| 1937 | 84 | 93.2 |
| 1938 | 85 | 93.2 |
| 1939 | 110 | 93.2 |
| 1940 | 84 | 86.1 |
| 1941 | 108 | 86.1 |
| 1942 | 92 | 86.1 |
| 1943 | 89 | 86.1 |
| 1944 | 104 | 86.1 |
| 1945 | 80 | 86.1 |
| 1946 | 59 | 86.1 |
| 1947 | 73 | 86.1 |
| 1948 | 85 | 86.1 |
| 1949 | 87 | 86.1 |
| 1950 | 46 | 67.7 |
| 1951 | 67 | 67.7 |
| 1952 | 78 | 67.7 |
| 1953 | 77 | 67.7 |
| 1954 | 88 | 67.7 |
| 1955 | 72 | 67.7 |
| 1956 | 60 | 67.7 |
| 1957 | 74 | 67.7 |
| 1958 | 46 | 67.7 |
| 1959 | 69 | 67.7 |
| 1960 | 51 | 56.4 |
| 1961 | 51 | 56.4 |
| 1962 | 70 | 56.4 |
| 1963 | 44 | 56.4 |
| 1964 | 69 | 56.4 |
| 1965 | 64 | 56.4 |
| 1966 | 64 | 56.4 |
| 1967 | 35 | 56.4 |
| 1968 | 51 | 56.4 |
| 1969 | 65 | 56.4 |
| 1970 | 75 | 55.7 |
| 1971 | 45 | 55.7 |
| 1972 | 41 | 55.7 |
| 1973 | 72 | 55.7 |
| 1974 | 47 | 55.7 |
| 1975 | 63 | 55.7 |
| 1976 | 48 | 55.7 |
| 1977 | 72 | 55.7 |
| 1978 | 59 | 55.7 |
| 1979 | 35 | 55.7 |
| 1980 | 64 | 70.6 |
| 1982 | 54 | 70.6 |
| 1983 | 84 | 70.6 |
| 1984 | 67 | 70.6 |
| 1985 | 54 | 70.6 |
| 1986 | 80 | 70.6 |
| 1987 | 101 | 70.6 |
| 1988 | 78 | 70.6 |
| 1989 | 53 | 70.6 |
| 1990 | 31 | 46.4 |
| 1991 | 48 | 46.4 |
| 1992 | 11 | 46.4 |
| 1993 | 43 | 46.4 |
| 1994 | 24 | 46.4 |
| 1995 | 65 | 46.4 |
| 1996 | 47 | 46.4 |
| 1997 | 42 | 46.4 |
| 1998 | 78 | 46.4 |
| 1999 | 75 | 46.4 |
| 2000 | 42 | 59.9 |
| 2001 | 55 | 59.9 |
| 2002 | 82 | 59.9 |
| 2003 | 39 | 59.9 |
| 2004 | 48 | 59.9 |
| 2005 | 75 | 59.9 |
| 2007 | 98 | 59.9 |
| 2008 | 60 | 59.9 |
| 2009 | 40 | 59.9 |
| 2010 | 92 | 70.3 |
| 2011 | 70 | 70.3 |
| 2012 | 81 | 70.3 |
| 2013 | 41 | 70.3 |
| 2014 | 49 | 70.3 |
| 2016 | 81 | 70.3 |
| 2017 | 56 | 70.3 |
| 2018 | 82 | 70.3 |
| 2019 | 81 | 70.3 |
| 2020 | 69 | 68.9 |
| 2021 | 63 | 68.9 |
| 2022 | 66 | 68.9 |
| 2023 | 51 | 68.9 |
| 2024 | 85 | 68.9 |
| 2025 | 78 | 68.9 |
| 2026 | 70 | 68.9 |
| Year | First date | Last date |
|---|---|---|
| 1893 | 1893-03-23 | 1893-10-11 |
| 1894 | 1894-03-20 | 1894-09-15 |
| 1895 | 1895-04-25 | 1895-09-25 |
| 1896 | 1896-04-11 | 1896-09-18 |
| 1897 | 1897-04-24 | 1897-10-16 |
| 1898 | 1898-05-01 | 1898-10-02 |
| 1899 | 1899-04-20 | 1899-10-14 |
| 1900 | 1900-04-24 | 1900-10-05 |
| 1901 | 1901-04-29 | 1901-09-16 |
| 1902 | 1902-04-21 | 1902-09-25 |
| 1903 | 1903-04-29 | 1903-10-04 |
| 1904 | 1904-05-24 | 1904-10-10 |
| 1905 | 1905-05-04 | 1905-09-28 |
| 1906 | 1906-04-13 | 1906-09-20 |
| 1907 | 1907-03-22 | 1907-09-21 |
| 1908 | 1908-05-14 | 1908-09-25 |
| 1909 | 1909-05-31 | 1909-09-14 |
| 1910 | 1910-03-28 | 1910-10-03 |
| 1911 | 1911-05-10 | 1911-09-27 |
| 1912 | 1912-05-03 | 1912-09-14 |
| 1913 | 1913-04-23 | 1913-10-10 |
| 1914 | 1914-04-18 | 1914-10-07 |
| 1915 | 1915-04-19 | 1915-09-25 |
| 1916 | 1916-03-25 | 1916-10-08 |
| 1917 | 1917-04-17 | 1917-10-18 |
| 1918 | 1918-05-05 | 1918-10-05 |
| 1919 | 1919-04-09 | 1919-10-03 |
| 1920 | 1920-04-22 | 1920-10-23 |
| 1921 | 1921-03-26 | 1921-09-23 |
| 1922 | 1922-04-07 | 1922-10-06 |
| 1924 | 1924-05-06 | 1924-10-19 |
| 1925 | 1925-04-23 | 1925-09-20 |
| 1926 | 1926-05-01 | 1926-10-04 |
| 1927 | 1927-04-19 | 1927-10-30 |
| 1928 | 1928-05-03 | 1928-10-17 |
| 1929 | 1929-03-24 | 1929-09-28 |
| 1930 | 1930-04-11 | 1930-10-15 |
| 1931 | 1931-04-19 | 1931-10-04 |
| 1932 | 1932-05-04 | 1932-09-14 |
| 1933 | 1933-04-30 | 1933-10-21 |
| 1934 | 1934-04-03 | 1934-10-11 |
| 1935 | 1935-04-26 | 1935-10-14 |
| 1936 | 1936-05-01 | 1936-09-27 |
| 1937 | 1937-04-23 | 1937-10-06 |
| 1938 | 1938-04-19 | 1938-10-18 |
| 1939 | 1939-04-24 | 1939-10-10 |
| 1940 | 1940-05-06 | 1940-10-14 |
| 1941 | 1941-04-13 | 1941-10-07 |
| 1942 | 1942-04-24 | 1942-10-03 |
| 1943 | 1943-05-06 | 1943-10-01 |
| 1944 | 1944-04-22 | 1944-09-21 |
| 1945 | 1945-03-16 | 1945-09-28 |
| 1946 | 1946-04-22 | 1946-10-05 |
| 1947 | 1947-04-05 | 1947-10-16 |
| 1948 | 1948-04-24 | 1948-09-21 |
| 1949 | 1949-05-03 | 1949-10-11 |
| 1950 | 1950-03-27 | 1950-08-28 |
| 1951 | 1951-05-02 | 1951-10-06 |
| 1952 | 1952-04-22 | 1952-10-02 |
| 1953 | 1953-05-11 | 1953-10-21 |
| 1954 | 1954-04-08 | 1954-10-13 |
| 1955 | 1955-04-19 | 1955-09-22 |
| 1956 | 1956-04-28 | 1956-09-24 |
| 1957 | 1957-04-21 | 1957-09-22 |
| 1958 | 1958-05-16 | 1958-09-27 |
| 1959 | 1959-05-03 | 1959-10-06 |
| 1960 | 1960-04-14 | 1960-09-09 |
| 1961 | 1961-05-09 | 1961-09-26 |
| 1962 | 1962-04-27 | 1962-10-16 |
| 1963 | 1963-04-22 | 1963-09-21 |
| 1964 | 1964-05-07 | 1964-09-17 |
| 1965 | 1965-05-02 | 1965-09-23 |
| 1966 | 1966-05-09 | 1966-09-04 |
| 1967 | 1967-05-28 | 1967-09-19 |
| 1968 | 1968-05-04 | 1968-09-25 |
| 1969 | 1969-04-18 | 1969-10-14 |
| 1970 | 1970-04-30 | 1970-09-27 |
| 1971 | 1971-05-19 | 1971-10-02 |
| 1972 | 1972-05-23 | 1972-09-14 |
| 1973 | 1973-04-22 | 1973-10-05 |
| 1974 | 1974-04-29 | 1974-08-28 |
| 1975 | 1975-05-21 | 1975-09-06 |
| 1976 | 1976-04-18 | 1976-09-14 |
| 1977 | 1977-04-13 | 1977-09-19 |
| 1978 | 1978-05-20 | 1978-09-22 |
| 1979 | 1979-05-08 | 1979-10-22 |
| 1980 | 1980-05-13 | 1980-09-22 |
| 1982 | 1982-05-06 | 1982-09-16 |
| 1983 | 1983-06-11 | 1983-10-04 |
| 1984 | 1984-04-27 | 1984-09-24 |
| 1985 | 1985-04-21 | 1985-10-13 |
| 1986 | 1986-04-01 | 1986-10-02 |
| 1987 | 1987-04-22 | 1987-09-28 |
| 1988 | 1988-05-09 | 1988-10-01 |
| 1989 | 1989-05-26 | 1989-09-22 |
| 1990 | 1990-04-27 | 1990-09-08 |
| 1991 | 1991-05-16 | 1991-09-17 |
| 1992 | 1992-06-18 | 1992-08-27 |
| 1993 | 1993-05-11 | 1993-09-15 |
| 1994 | 1994-05-24 | 1994-08-14 |
| 1995 | 1995-06-09 | 1995-09-15 |
| 1996 | 1996-05-19 | 1996-09-10 |
| 1997 | 1997-05-20 | 1997-10-14 |
| 1998 | 1998-05-15 | 1998-10-01 |
| 1999 | 1999-05-12 | 1999-09-29 |
| 2000 | 2000-05-06 | 2000-08-31 |
| 2001 | 2001-04-12 | 2001-09-14 |
| 2002 | 2002-04-17 | 2002-10-05 |
| 2003 | 2003-06-24 | 2003-09-23 |
| 2004 | 2004-05-10 | 2004-09-24 |
| 2005 | 2005-05-12 | 2005-10-07 |
| 2007 | 2007-05-01 | 2007-10-09 |
| 2008 | 2008-06-02 | 2008-09-15 |
| 2009 | 2009-04-27 | 2009-09-24 |
| 2010 | 2010-04-03 | 2010-10-12 |
| 2011 | 2011-05-13 | 2011-09-06 |
| 2012 | 2012-03-21 | 2012-09-15 |
| 2013 | 2013-05-22 | 2013-10-03 |
| 2014 | 2014-05-08 | 2014-10-03 |
| 2016 | 2016-05-28 | 2016-10-19 |
| 2017 | 2017-05-01 | 2017-10-08 |
| 2018 | 2018-05-14 | 2018-10-09 |
| 2019 | 2019-05-18 | 2019-10-04 |
| 2020 | 2020-05-25 | 2020-09-11 |
| 2021 | 2021-05-22 | 2021-09-20 |
| 2022 | 2022-04-24 | 2022-09-22 |
| 2023 | 2023-04-06 | 2023-10-05 |
| 2024 | 2024-04-16 | 2024-10-08 |
| 2025 | 2025-06-04 | 2025-09-30 |
| 2026 | 2026-05-17 | 2026-10-14 |
Every Fixed Threshold
| Threshold | Years with a qualifying day | Most days in a year | Year | Latest year days |
|---|---|---|---|---|
| 30 C (86 F): Days | 130 | 110 | 1939 | 70 |
| 35 C (95 F): Days | 103 | 46 | 1936 | 7 |
| 40 C (104 F): Days | 8 | 3 | 1930 | 3 |
| 90 F (32.2 C): Days | 129 | 86 | 1936 | 27 |
| 100 F (37.8 C): Days | 38 | 17 | 1936 | 3 |
| 0 C (32 F): Ice days (max | 130 | 40 | 1977 | 22 |
| 0 C (32 F): Frost days (min | 130 | 131 | 1917 | 72 |
| -10 C (14 F): Days with min | 129 | 39 | 1985 | 18 |
| -20 C (-4 F): Days with min | 38 | 9 | 1918 | 3 |
| -30 C (-22 F): Days with min | 1 | 2 | 1994 | 2 |
| 20 C (68 F): Tropical nights (min | 130 | 60 | 1949 | 45 |
| 25 C (77 F): Days with min | 20 | 4 | 1934 | 1 |
| 10 mm (0.39 in): Days with 10 mm or more rain | 126 | 55 | 2018 | 29 |
| 25 mm (0.98 in): Days with 25 mm or more rain | 126 | 19 | 1945 | 7 |
| 50 mm (1.97 in): Days with 50 mm or more rain | 95 | 5 | 1979 | 2 |
| 100 mm (3.94 in): Days with 100 mm or more rain | 5 | 1 | 1938 | 1 |
| 10 cm (3.9 in): Days with 10 cm or more snowfall | 32 | 4 | 1960 | 1 |
| 25 cm (9.8 in): Days with 25 cm or more snowfall | 3 | 1 | 1960 | 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 2026-10-17 (17 October 2026). Threshold counts are computed by this site.
Data as of . Last revised (2026-10-17).