Grantham Threshold Days by Year (SF000912880)
4 fixed thresholds counted per year at Grantham (SF000912880): hot days, frost, tropical nights and heavy rain, with the most days in a year.
Key Facts for Grantham Thresholds
- Grantham: days with 10 mm (0.39 in) or more of precipitation in 80 years, most in 1974 with 14.
- Grantham: days with 25 mm (0.98 in) or more of precipitation in 60 years, most in 1921 with 5.
- Grantham: days with 50 mm (1.97 in) or more of precipitation in 15 years, most in 1913 with 3.
- Grantham: days with 100 mm (3.94 in) or more of precipitation in 1 years, most in 1919 with 1.
- 4 fixed thresholds have at least one qualifying day at Grantham.
Days with 10 mm (0.39 in) or more of precipitation
80 years with a qualifying day| Year | Days | Decade average |
|---|---|---|
| 1912 | 4 | 5.4 |
| 1913 | 7 | 5.4 |
| 1914 | 6 | 5.4 |
| 1915 | 4 | 5.4 |
| 1916 | 3 | 5.4 |
| 1917 | 8 | 5.4 |
| 1918 | 6 | 5.4 |
| 1919 | 5 | 5.4 |
| 1920 | 4 | 4.9 |
| 1921 | 12 | 4.9 |
| 1922 | 5 | 4.9 |
| 1923 | 3 | 4.9 |
| 1924 | 5 | 4.9 |
| 1925 | 4 | 4.9 |
| 1926 | 2 | 4.9 |
| 1927 | 4 | 4.9 |
| 1930 | 2 | 5 |
| 1931 | 9 | 5 |
| 1932 | 3 | 5 |
| 1933 | 7 | 5 |
| 1934 | 6 | 5 |
| 1935 | 4 | 5 |
| 1936 | 7 | 5 |
| 1937 | 2 | 5 |
| 1938 | 4 | 5 |
| 1939 | 6 | 5 |
| 1940 | 6 | 5 |
| 1941 | 6 | 5 |
| 1942 | 3 | 5 |
| 1943 | 7 | 5 |
| 1944 | 2 | 5 |
| 1945 | 4 | 5 |
| 1946 | 4 | 5 |
| 1947 | 8 | 5 |
| 1949 | 5 | 5 |
| 1950 | 13 | 7.5 |
| 1951 | 3 | 7.5 |
| 1952 | 9 | 7.5 |
| 1953 | 10 | 7.5 |
| 1954 | 8 | 7.5 |
| 1955 | 4 | 7.5 |
| 1956 | 8 | 7.5 |
| 1959 | 5 | 7.5 |
| 1960 | 3 | 5.3 |
| 1961 | 11 | 5.3 |
| 1962 | 3 | 5.3 |
| 1963 | 5 | 5.3 |
| 1964 | 7 | 5.3 |
| 1965 | 5 | 5.3 |
| 1966 | 4 | 5.3 |
| 1967 | 5 | 5.3 |
| 1968 | 4 | 5.3 |
| 1969 | 6 | 5.3 |
| 1970 | 6 | 8.1 |
| 1971 | 7 | 8.1 |
| 1972 | 4 | 8.1 |
| 1973 | 7 | 8.1 |
| 1974 | 14 | 8.1 |
| 1975 | 10 | 8.1 |
| 1976 | 14 | 8.1 |
| 1977 | 10 | 8.1 |
| 1978 | 5 | 8.1 |
| 1979 | 4 | 8.1 |
| 1980 | 8 | 6.7 |
| 1981 | 10 | 6.7 |
| 1982 | 7 | 6.7 |
| 1983 | 5 | 6.7 |
| 1984 | 3 | 6.7 |
| 1985 | 7 | 6.7 |
| 1986 | 5 | 6.7 |
| 1987 | 5 | 6.7 |
| 1988 | 8 | 6.7 |
| 1989 | 9 | 6.7 |
| 1990 | 8 | 6.7 |
| 1991 | 3 | 6.7 |
| 1992 | 6 | 6.7 |
| 1993 | 7 | 6.7 |
| 1994 | 9 | 6.7 |
| 1995 | 6 | 6.7 |
| 1996 | 8 | 6.7 |
| Year | First date | Last date |
|---|---|---|
| 1912 | 1912-02-27 | 1912-06-17 |
| 1913 | 1913-01-16 | 1913-10-09 |
| 1914 | 1914-04-02 | 1914-12-03 |
| 1915 | 1915-01-04 | 1915-11-02 |
| 1916 | 1916-03-02 | 1916-12-17 |
| 1917 | 1917-02-10 | 1917-11-16 |
| 1918 | 1918-01-01 | 1918-10-29 |
| 1919 | 1919-03-14 | 1919-11-22 |
| 1920 | 1920-03-22 | 1920-12-18 |
| 1921 | 1921-02-01 | 1921-12-28 |
| 1922 | 1922-01-09 | 1922-11-05 |
| 1923 | 1923-07-19 | 1923-12-26 |
| 1924 | 1924-01-10 | 1924-12-05 |
| 1925 | 1925-02-23 | 1925-12-21 |
| 1926 | 1926-05-03 | 1926-11-17 |
| 1927 | 1927-02-14 | 1927-11-21 |
| 1930 | 1930-02-13 | 1930-02-24 |
| 1931 | 1931-01-09 | 1931-12-31 |
| 1932 | 1932-02-27 | 1932-11-07 |
| 1933 | 1933-03-03 | 1933-12-21 |
| 1934 | 1934-01-01 | 1934-12-21 |
| 1935 | 1935-02-28 | 1935-09-09 |
| 1936 | 1936-02-25 | 1936-10-28 |
| 1937 | 1937-02-25 | 1937-12-17 |
| 1938 | 1938-02-16 | 1938-11-08 |
| 1939 | 1939-02-01 | 1939-08-31 |
| 1940 | 1940-02-03 | 1940-09-12 |
| 1941 | 1941-01-30 | 1941-10-30 |
| 1942 | 1942-03-05 | 1942-10-10 |
| 1943 | 1943-02-22 | 1943-11-30 |
| 1944 | 1944-01-04 | 1944-02-18 |
| 1945 | 1945-02-01 | 1945-06-21 |
| 1946 | 1946-02-12 | 1946-10-12 |
| 1947 | 1947-01-13 | 1947-12-05 |
| 1949 | 1949-05-10 | 1949-11-17 |
| 1950 | 1950-03-09 | 1950-11-29 |
| 1951 | 1951-01-11 | 1951-02-15 |
| 1952 | 1952-02-19 | 1952-11-15 |
| 1953 | 1953-02-22 | 1953-12-20 |
| 1954 | 1954-01-21 | 1954-11-05 |
| 1955 | 1955-03-07 | 1955-11-29 |
| 1956 | 1956-01-24 | 1956-12-07 |
| 1959 | 1959-02-12 | 1959-10-08 |
| 1960 | 1960-08-19 | 1960-12-21 |
| 1961 | 1961-03-11 | 1961-11-12 |
| 1962 | 1962-02-23 | 1962-11-21 |
| 1963 | 1963-01-16 | 1963-11-18 |
| 1964 | 1964-02-01 | 1964-11-05 |
| 1965 | 1965-03-23 | 1965-11-05 |
| 1966 | 1966-01-21 | 1966-05-11 |
| 1967 | 1967-02-15 | 1967-07-12 |
| 1968 | 1968-03-31 | 1968-10-15 |
| 1969 | 1969-02-24 | 1969-11-21 |
| 1970 | 1970-05-01 | 1970-12-24 |
| 1971 | 1971-01-23 | 1971-08-22 |
| 1972 | 1972-01-05 | 1972-12-16 |
| 1973 | 1973-02-18 | 1973-12-02 |
| 1974 | 1974-01-16 | 1974-11-29 |
| 1975 | 1975-01-31 | 1975-12-22 |
| 1976 | 1976-01-03 | 1976-11-05 |
| 1977 | 1977-02-12 | 1977-12-31 |
| 1978 | 1978-08-24 | 1978-12-09 |
| 1979 | 1979-05-11 | 1979-11-17 |
| 1980 | 1980-02-05 | 1980-12-14 |
| 1981 | 1981-01-23 | 1981-10-15 |
| 1982 | 1982-04-04 | 1982-11-22 |
| 1983 | 1983-06-16 | 1983-11-02 |
| 1984 | 1984-03-11 | 1984-10-10 |
| 1985 | 1985-01-13 | 1985-12-18 |
| 1986 | 1986-02-03 | 1986-10-30 |
| 1987 | 1987-02-12 | 1987-11-12 |
| 1988 | 1988-02-16 | 1988-12-28 |
| 1989 | 1989-01-29 | 1989-11-15 |
| 1990 | 1990-01-17 | 1990-11-26 |
| 1991 | 1991-09-26 | 1991-10-13 |
| 1992 | 1992-01-01 | 1992-08-07 |
| 1993 | 1993-02-10 | 1993-11-10 |
| 1994 | 1994-01-05 | 1994-10-21 |
| 1995 | 1995-03-25 | 1995-12-17 |
| 1996 | 1996-01-18 | 1996-11-21 |
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 | 80 | 14 | 1974 | 8 |
| 25 mm (0.98 in): Days with 25 mm or more rain | 60 | 5 | 1921 | 1 |
| 50 mm (1.97 in): Days with 50 mm or more rain | 15 | 3 | 1913 | 2 |
| 100 mm (3.94 in): Days with 100 mm or more rain | 1 | 1 | 1919 | 1 |
Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1912.
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 (2025-12-31).