Black Hill Threshold Days by Year (ASN00024502)
4 fixed thresholds counted per year at Black Hill (ASN00024502): hot days, frost, tropical nights and heavy rain, with the most days in a year.
Key Facts for Black Hill Thresholds
- Black Hill: days with 10 mm (0.39 in) or more of precipitation in 76 years, most in 1974 with 15.
- Black Hill: days with 25 mm (0.98 in) or more of precipitation in 47 years, most in 1974 with 5.
- Black Hill: days with 50 mm (1.97 in) or more of precipitation in 11 years, most in 1941 with 1.
- Black Hill: days with 100 mm (3.94 in) or more of precipitation in 1 years, most in 1941 with 1.
- 4 fixed thresholds have at least one qualifying day at Black Hill.
Days with 10 mm (0.39 in) or more of precipitation
76 years with a qualifying day| Year | Days | Decade average |
|---|---|---|
| 1937 | 8 | 6.3 |
| 1938 | 6 | 6.3 |
| 1939 | 5 | 6.3 |
| 1940 | 4 | 6.1 |
| 1941 | 10 | 6.1 |
| 1942 | 9 | 6.1 |
| 1943 | 3 | 6.1 |
| 1945 | 3 | 6.1 |
| 1946 | 7 | 6.1 |
| 1947 | 11 | 6.1 |
| 1948 | 4 | 6.1 |
| 1949 | 4 | 6.1 |
| 1950 | 9 | 5 |
| 1951 | 4 | 5 |
| 1952 | 4 | 5 |
| 1953 | 3 | 5 |
| 1954 | 6 | 5 |
| 1955 | 11 | 5 |
| 1956 | 2 | 5 |
| 1957 | 2 | 5 |
| 1958 | 5 | 5 |
| 1959 | 4 | 5 |
| 1960 | 10 | 6.9 |
| 1961 | 9 | 6.9 |
| 1962 | 9 | 6.9 |
| 1963 | 7 | 6.9 |
| 1964 | 8 | 6.9 |
| 1965 | 6 | 6.9 |
| 1966 | 5 | 6.9 |
| 1968 | 4 | 6.9 |
| 1969 | 4 | 6.9 |
| 1970 | 6 | 7 |
| 1971 | 4 | 7 |
| 1972 | 3 | 7 |
| 1973 | 11 | 7 |
| 1974 | 15 | 7 |
| 1975 | 7 | 7 |
| 1976 | 6 | 7 |
| 1977 | 1 | 7 |
| 1978 | 7 | 7 |
| 1979 | 10 | 7 |
| 1980 | 6 | 7.3 |
| 1981 | 7 | 7.3 |
| 1982 | 3 | 7.3 |
| 1983 | 15 | 7.3 |
| 1984 | 5 | 7.3 |
| 1985 | 3 | 7.3 |
| 1986 | 8 | 7.3 |
| 1987 | 11 | 7.3 |
| 1988 | 8 | 7.3 |
| 1989 | 7 | 7.3 |
| 1990 | 6 | 5.5 |
| 1991 | 5 | 5.5 |
| 2001 | 6 | 4.3 |
| 2002 | 2 | 4.3 |
| 2003 | 4 | 4.3 |
| 2004 | 3 | 4.3 |
| 2005 | 6 | 4.3 |
| 2006 | 3 | 4.3 |
| 2007 | 8 | 4.3 |
| 2008 | 1 | 4.3 |
| 2009 | 6 | 4.3 |
| 2010 | 9 | 5.6 |
| 2014 | 6 | 5.6 |
| 2015 | 8 | 5.6 |
| 2016 | 6 | 5.6 |
| 2017 | 6 | 5.6 |
| 2018 | 2 | 5.6 |
| 2019 | 2 | 5.6 |
| 2020 | 7 | 6.1 |
| 2021 | 6 | 6.1 |
| 2022 | 9 | 6.1 |
| 2023 | 7 | 6.1 |
| 2024 | 3 | 6.1 |
| 2025 | 4 | 6.1 |
| 2026 | 7 | 6.1 |
| Year | First date | Last date |
|---|---|---|
| 1937 | 1937-01-19 | 1937-12-03 |
| 1938 | 1938-01-12 | 1938-08-24 |
| 1939 | 1939-02-25 | 1939-11-02 |
| 1940 | 1940-01-05 | 1940-12-19 |
| 1941 | 1941-01-25 | 1941-11-18 |
| 1942 | 1942-04-21 | 1942-11-21 |
| 1943 | 1943-02-17 | 1943-12-18 |
| 1945 | 1945-06-22 | 1945-10-26 |
| 1946 | 1946-01-18 | 1946-12-28 |
| 1947 | 1947-02-06 | 1947-10-20 |
| 1948 | 1948-04-11 | 1948-12-16 |
| 1949 | 1949-02-20 | 1949-10-15 |
| 1950 | 1950-02-02 | 1950-10-17 |
| 1951 | 1951-05-13 | 1951-10-09 |
| 1952 | 1952-01-25 | 1952-10-01 |
| 1953 | 1953-04-14 | 1953-11-04 |
| 1954 | 1954-01-27 | 1954-12-12 |
| 1955 | 1955-02-09 | 1955-12-03 |
| 1956 | 1956-05-16 | 1956-07-06 |
| 1957 | 1957-06-21 | 1957-10-23 |
| 1958 | 1958-03-27 | 1958-11-23 |
| 1959 | 1959-03-31 | 1959-10-29 |
| 1960 | 1960-02-02 | 1960-11-12 |
| 1961 | 1961-02-08 | 1961-12-15 |
| 1962 | 1962-01-17 | 1962-12-28 |
| 1963 | 1963-05-15 | 1963-10-27 |
| 1964 | 1964-02-06 | 1964-12-22 |
| 1965 | 1965-05-08 | 1965-11-25 |
| 1966 | 1966-02-16 | 1966-12-04 |
| 1968 | 1968-01-20 | 1968-10-01 |
| 1969 | 1969-02-09 | 1969-12-01 |
| 1970 | 1970-04-10 | 1970-12-11 |
| 1971 | 1971-04-15 | 1971-11-07 |
| 1972 | 1972-01-07 | 1972-11-03 |
| 1973 | 1973-02-05 | 1973-12-30 |
| 1974 | 1974-01-14 | 1974-10-16 |
| 1975 | 1975-01-08 | 1975-10-24 |
| 1976 | 1976-01-12 | 1976-12-15 |
| 1977 | 1977-11-29 | 1977-11-29 |
| 1978 | 1978-06-11 | 1978-11-19 |
| 1979 | 1979-01-17 | 1979-11-15 |
| 1980 | 1980-04-18 | 1980-10-23 |
| 1981 | 1981-04-03 | 1981-11-28 |
| 1982 | 1982-01-25 | 1982-09-27 |
| 1983 | 1983-03-03 | 1983-12-31 |
| 1984 | 1984-01-01 | 1984-07-16 |
| 1985 | 1985-03-16 | 1985-08-22 |
| 1986 | 1986-05-08 | 1986-11-18 |
| 1987 | 1987-01-25 | 1987-12-02 |
| 1988 | 1988-01-24 | 1988-12-21 |
| 1989 | 1989-03-21 | 1989-12-02 |
| 1990 | 1990-01-11 | 1990-09-25 |
| 1991 | 1991-01-04 | 1991-11-02 |
| 2001 | 2001-01-26 | 2001-11-23 |
| 2002 | 2002-05-19 | 2002-12-31 |
| 2003 | 2003-08-21 | 2003-12-21 |
| 2004 | 2004-03-09 | 2004-12-09 |
| 2005 | 2005-01-04 | 2005-11-07 |
| 2006 | 2006-01-02 | 2006-12-22 |
| 2007 | 2007-01-19 | 2007-12-22 |
| 2008 | 2008-06-09 | 2008-06-09 |
| 2009 | 2009-04-24 | 2009-12-21 |
| 2010 | 2010-03-29 | 2010-12-08 |
| 2014 | 2014-02-14 | 2014-12-11 |
| 2015 | 2015-01-08 | 2015-11-04 |
| 2016 | 2016-03-10 | 2016-09-29 |
| 2017 | 2017-01-20 | 2017-11-16 |
| 2018 | 2018-08-03 | 2018-12-16 |
| 2019 | 2019-05-10 | 2019-06-12 |
| 2020 | 2020-02-01 | 2020-10-08 |
| 2021 | 2021-06-18 | 2021-11-25 |
| 2022 | 2022-05-30 | 2022-11-19 |
| 2023 | 2023-05-26 | 2023-12-10 |
| 2024 | 2024-01-07 | 2024-10-18 |
| 2025 | 2025-03-12 | 2025-11-29 |
| 2026 | 2026-03-01 | 2026-08-25 |
Every Fixed Threshold
| Threshold | Years with a qualifying day | Most days in a year | Year | Latest year days |
|---|---|---|---|---|
| 10 mm (0.39 in): Days with 10 mm or more rain | 76 | 15 | 1974 | 7 |
| 25 mm (0.98 in): Days with 25 mm or more rain | 47 | 5 | 1974 | 1 |
| 50 mm (1.97 in): Days with 50 mm or more rain | 11 | 1 | 1941 | 1 |
| 100 mm (3.94 in): Days with 100 mm or more rain | 1 | 1 | 1941 | 1 |
Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1937.
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).