Brookings Threshold Days by Year (USC00351055)
12 fixed thresholds counted per year at Brookings (USC00351055): hot days, frost, tropical nights and heavy rain, with the most days in a year.
Key Facts for Brookings Thresholds
- Brookings: days with 10 mm (0.39 in) or more of precipitation in 85 years, most in 1996 with 93.
- Brookings: days with 25 mm (0.98 in) or more of precipitation in 85 years, most in 1996 with 47.
- Brookings: days with 50 mm (1.97 in) or more of precipitation in 84 years, most in 1937 with 12.
- Brookings: nights with a minimum temperature at or below 0 C (32 F) in 78 years, most in 1949 with 29.
- 12 fixed thresholds have at least one qualifying day at Brookings.
Days at or above 30 C (86 F)
77 years with a qualifying day| Year | Days | Decade average |
|---|---|---|
| 1914 | 5 | 4.6 |
| 1916 | 1 | 4.6 |
| 1917 | 3 | 4.6 |
| 1918 | 5 | 4.6 |
| 1919 | 9 | 4.6 |
| 1921 | 2 | 1.9 |
| 1922 | 4 | 1.9 |
| 1923 | 1 | 1.9 |
| 1926 | 1 | 1.9 |
| 1927 | 2 | 1.9 |
| 1928 | 2 | 1.9 |
| 1929 | 1 | 1.9 |
| 1930 | 1 | 4.6 |
| 1931 | 7 | 4.6 |
| 1932 | 1 | 4.6 |
| 1933 | 2 | 4.6 |
| 1934 | 7 | 4.6 |
| 1935 | 3 | 4.6 |
| 1936 | 8 | 4.6 |
| 1937 | 8 | 4.6 |
| 1938 | 3 | 4.6 |
| 1939 | 6 | 4.6 |
| 1940 | 2 | 5.6 |
| 1941 | 2 | 5.6 |
| 1942 | 5 | 5.6 |
| 1943 | 13 | 5.6 |
| 1944 | 2 | 5.6 |
| 1945 | 10 | 5.6 |
| 1946 | 3 | 5.6 |
| 1947 | 8 | 5.6 |
| 1948 | 5 | 5.6 |
| 1950 | 5 | 3.8 |
| 1951 | 6 | 3.8 |
| 1952 | 4 | 3.8 |
| 1954 | 2 | 3.8 |
| 1955 | 2 | 3.8 |
| 1956 | 1 | 3.8 |
| 1957 | 2 | 3.8 |
| 1958 | 9 | 3.8 |
| 1959 | 3 | 3.8 |
| 1960 | 6 | 3.4 |
| 1961 | 1 | 3.4 |
| 1962 | 2 | 3.4 |
| 1963 | 1 | 3.4 |
| 1964 | 3 | 3.4 |
| 1965 | 3 | 3.4 |
| 1966 | 8 | 3.4 |
| 1967 | 3 | 3.4 |
| 1968 | 5 | 3.4 |
| 1969 | 2 | 3.4 |
| 1970 | 4 | 3.6 |
| 1971 | 3 | 3.6 |
| 1972 | 4 | 3.6 |
| 1973 | 5 | 3.6 |
| 1974 | 3 | 3.6 |
| 1975 | 4 | 3.6 |
| 1976 | 1 | 3.6 |
| 1977 | 2 | 3.6 |
| 1978 | 6 | 3.6 |
| 1979 | 4 | 3.6 |
| 1980 | 6 | 4.9 |
| 1981 | 1 | 4.9 |
| 1982 | 4 | 4.9 |
| 1983 | 7 | 4.9 |
| 1984 | 2 | 4.9 |
| 1985 | 10 | 4.9 |
| 1986 | 4 | 4.9 |
| 1987 | 5 | 4.9 |
| 1991 | 7 | 4.3 |
| 1992 | 4 | 4.3 |
| 1993 | 9 | 4.3 |
| 1994 | 3 | 4.3 |
| 1995 | 4 | 4.3 |
| 1996 | 1 | 4.3 |
| 1999 | 2 | 4.3 |
| 2000 | 11 | 8.5 |
| 2001 | 6 | 8.5 |
| Year | First date | Last date |
|---|---|---|
| 1914 | 1914-03-18 | 1914-09-02 |
| 1916 | 1916-08-21 | 1916-08-21 |
| 1917 | 1917-08-10 | 1917-10-04 |
| 1918 | 1918-06-26 | 1918-08-23 |
| 1919 | 1919-06-03 | 1919-09-22 |
| 1921 | 1921-09-29 | 1921-10-01 |
| 1922 | 1922-05-15 | 1922-09-09 |
| 1923 | 1923-09-16 | 1923-09-16 |
| 1926 | 1926-09-03 | 1926-09-03 |
| 1927 | 1927-09-16 | 1927-09-17 |
| 1928 | 1928-08-22 | 1928-09-21 |
| 1929 | 1929-11-02 | 1929-11-02 |
| 1930 | 1930-07-21 | 1930-07-21 |
| 1931 | 1931-04-20 | 1931-09-01 |
| 1932 | 1932-09-09 | 1932-09-09 |
| 1933 | 1933-08-20 | 1933-08-21 |
| 1934 | 1934-05-12 | 1934-09-14 |
| 1935 | 1935-06-04 | 1935-10-07 |
| 1936 | 1936-08-26 | 1936-10-23 |
| 1937 | 1937-06-02 | 1937-09-25 |
| 1938 | 1938-09-09 | 1938-09-11 |
| 1939 | 1939-05-07 | 1939-10-11 |
| 1940 | 1940-06-08 | 1940-08-15 |
| 1941 | 1941-05-10 | 1941-09-08 |
| 1942 | 1942-08-12 | 1942-10-22 |
| 1943 | 1943-05-23 | 1943-09-23 |
| 1944 | 1944-07-13 | 1944-09-26 |
| 1945 | 1945-06-16 | 1945-10-06 |
| 1946 | 1946-09-22 | 1946-10-11 |
| 1947 | 1947-05-19 | 1947-09-21 |
| 1948 | 1948-07-14 | 1948-09-07 |
| 1950 | 1950-05-30 | 1950-07-30 |
| 1951 | 1951-04-09 | 1951-09-12 |
| 1952 | 1952-07-02 | 1952-10-01 |
| 1954 | 1954-08-22 | 1954-10-14 |
| 1955 | 1955-06-05 | 1955-09-25 |
| 1956 | 1956-10-06 | 1956-10-06 |
| 1957 | 1957-09-08 | 1957-09-19 |
| 1958 | 1958-06-15 | 1958-10-02 |
| 1959 | 1959-07-28 | 1959-09-08 |
| 1960 | 1960-06-01 | 1960-08-17 |
| 1961 | 1961-09-26 | 1961-09-26 |
| 1962 | 1962-08-22 | 1962-09-08 |
| 1963 | 1963-09-18 | 1963-09-18 |
| 1964 | 1964-09-22 | 1964-09-24 |
| 1965 | 1965-08-28 | 1965-10-23 |
| 1966 | 1966-05-18 | 1966-10-09 |
| 1967 | 1967-09-12 | 1967-09-20 |
| 1968 | 1968-08-29 | 1968-09-28 |
| 1969 | 1969-05-06 | 1969-06-01 |
| 1970 | 1970-07-13 | 1970-09-26 |
| 1971 | 1971-09-13 | 1971-09-15 |
| 1972 | 1972-07-01 | 1972-10-07 |
| 1973 | 1973-07-12 | 1973-09-26 |
| 1974 | 1974-06-29 | 1974-09-12 |
| 1975 | 1975-05-30 | 1975-06-13 |
| 1976 | 1976-09-08 | 1976-09-08 |
| 1977 | 1977-06-27 | 1977-06-29 |
| 1978 | 1978-05-31 | 1978-10-13 |
| 1979 | 1979-05-31 | 1979-09-13 |
| 1980 | 1980-07-19 | 1980-09-24 |
| 1981 | 1981-07-25 | 1981-07-25 |
| 1982 | 1982-05-05 | 1982-10-09 |
| 1983 | 1983-05-19 | 1983-09-20 |
| 1984 | 1984-07-01 | 1984-07-02 |
| 1985 | 1985-06-15 | 1985-10-03 |
| 1986 | 1986-06-09 | 1986-09-02 |
| 1987 | 1987-08-17 | 1987-10-05 |
| 1991 | 1991-08-10 | 1991-10-20 |
| 1992 | 1992-06-20 | 1992-10-09 |
| 1993 | 1993-06-17 | 1993-10-28 |
| 1994 | 1994-09-20 | 1994-10-02 |
| 1995 | 1995-06-25 | 1995-08-19 |
| 1996 | 1996-09-01 | 1996-09-01 |
| 1999 | 1999-09-28 | 1999-10-16 |
| 2000 | 2000-04-01 | 2000-09-20 |
| 2001 | 2001-05-19 | 2001-09-07 |
Every Fixed Threshold
| Threshold | Years with a qualifying day | Most days in a year | Year | Latest year days |
|---|---|---|---|---|
| 30 C (86 F): Days | 77 | 13 | 1943 | 6 |
| 35 C (95 F): Days | 30 | 5 | 2000 | 2 |
| 90 F (32.2 C): Days | 62 | 8 | 1919 | 3 |
| 100 F (37.8 C): Days | 7 | 2 | 1918 | 1 |
| 0 C (32 F): Frost days (min | 78 | 29 | 1949 | 6 |
| 20 C (68 F): Tropical nights (min | 4 | 1 | 1918 | 1 |
| 10 mm (0.39 in): Days with 10 mm or more rain | 85 | 93 | 1996 | 25 |
| 25 mm (0.98 in): Days with 25 mm or more rain | 85 | 47 | 1996 | 6 |
| 50 mm (1.97 in): Days with 50 mm or more rain | 84 | 12 | 1937 | 2 |
| 100 mm (3.94 in): Days with 100 mm or more rain | 31 | 4 | 1937 | 1 |
| 200 mm (7.87 in): Days with 200 mm or more rain | 1 | 1 | 1932 | 1 |
| 10 cm (3.9 in): Days with 10 cm or more snowfall | 1 | 1 | 1972 | 1 |
Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1914.
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).