Choshi Threshold Days by Year (JA000047648)
11 fixed thresholds counted per year at Choshi (JA000047648): hot days, frost, tropical nights and heavy rain, with the most days in a year.
Key Facts for Choshi Thresholds
- Choshi: nights with a minimum temperature at or below 0 C (32 F) in 72 years, most in 1945 with 41.
- Choshi: nights with a minimum temperature at or above 20 C (68 F) in 72 years, most in 2025 with 114.
- Choshi: days with a maximum temperature at or above 30 C (86 F) in 68 years, most in 2025 with 45.
- Choshi: days with 10 mm (0.39 in) or more of precipitation in 61 years, most in 1989 with 65.
- 11 fixed thresholds have at least one qualifying day at Choshi.
Days at or above 30 C (86 F)
68 years with a qualifying day| Year | Days | Decade average |
|---|---|---|
| 1931 | 11 | 10.6 |
| 1932 | 12 | 10.6 |
| 1933 | 26 | 10.6 |
| 1934 | 5 | 10.6 |
| 1935 | 3 | 10.6 |
| 1936 | 15 | 10.6 |
| 1937 | 13 | 10.6 |
| 1938 | 3 | 10.6 |
| 1939 | 7 | 10.6 |
| 1940 | 5 | 9 |
| 1941 | 3 | 9 |
| 1942 | 30 | 9 |
| 1943 | 18 | 9 |
| 1944 | 15 | 9 |
| 1945 | 1 | 9 |
| 1946 | 5 | 9 |
| 1947 | 6 | 9 |
| 1948 | 1 | 9 |
| 1949 | 6 | 9 |
| 1950 | 2 | 5.1 |
| 1951 | 7 | 5.1 |
| 1952 | 7 | 5.1 |
| 1953 | 4 | 5.1 |
| 1954 | 5 | 5.1 |
| 1955 | 7 | 5.1 |
| 1956 | 7 | 5.1 |
| 1957 | 4 | 5.1 |
| 1958 | 3 | 5.1 |
| 1959 | 5 | 5.1 |
| 1960 | 2 | 5.6 |
| 1961 | 7 | 5.6 |
| 1962 | 4 | 5.6 |
| 1963 | 1 | 5.6 |
| 1964 | 5 | 5.6 |
| 1965 | 4 | 5.6 |
| 1966 | 6 | 5.6 |
| 1967 | 17 | 5.6 |
| 1968 | 9 | 5.6 |
| 1969 | 1 | 5.6 |
| 1970 | 4 | 6.3 |
| 1971 | 9 | 6.3 |
| 1972 | 3 | 6.3 |
| 1973 | 6 | 6.3 |
| 1977 | 4 | 6.3 |
| 1978 | 11 | 6.3 |
| 1979 | 7 | 6.3 |
| 1980 | 1 | 5.1 |
| 1982 | 1 | 5.1 |
| 1983 | 10 | 5.1 |
| 1984 | 14 | 5.1 |
| 1985 | 9 | 5.1 |
| 1986 | 2 | 5.1 |
| 1987 | 7 | 5.1 |
| 1988 | 1 | 5.1 |
| 1989 | 1 | 5.1 |
| 1990 | 17 | 15.8 |
| 1991 | 11 | 15.8 |
| 1992 | 7 | 15.8 |
| 1993 | 1 | 15.8 |
| 1994 | 29 | 15.8 |
| 1995 | 21 | 15.8 |
| 1996 | 5 | 15.8 |
| 1997 | 11 | 15.8 |
| 1998 | 18 | 15.8 |
| 1999 | 38 | 15.8 |
| 2000 | 20 | 20 |
| 2025 | 45 | 31 |
| 2026 | 17 | 31 |
| Year | First date | Last date |
|---|---|---|
| 1931 | 1931-08-08 | 1931-08-24 |
| 1932 | 1932-07-22 | 1932-08-14 |
| 1933 | 1933-07-21 | 1933-09-14 |
| 1934 | 1934-08-12 | 1934-08-29 |
| 1935 | 1935-07-31 | 1935-08-28 |
| 1936 | 1936-07-26 | 1936-09-14 |
| 1937 | 1937-07-28 | 1937-09-08 |
| 1938 | 1938-07-19 | 1938-08-08 |
| 1939 | 1939-07-08 | 1939-08-01 |
| 1940 | 1940-07-23 | 1940-08-26 |
| 1941 | 1941-08-17 | 1941-09-06 |
| 1942 | 1942-07-12 | 1942-09-14 |
| 1943 | 1943-07-16 | 1943-09-01 |
| 1944 | 1944-07-16 | 1944-09-06 |
| 1945 | 1945-08-19 | 1945-08-19 |
| 1946 | 1946-07-15 | 1946-08-30 |
| 1947 | 1947-08-10 | 1947-08-27 |
| 1948 | 1948-07-25 | 1948-07-25 |
| 1949 | 1949-08-09 | 1949-08-29 |
| 1950 | 1950-08-22 | 1950-09-19 |
| 1951 | 1951-08-07 | 1951-08-20 |
| 1952 | 1952-08-20 | 1952-09-13 |
| 1953 | 1953-08-18 | 1953-09-26 |
| 1954 | 1954-08-09 | 1954-08-23 |
| 1955 | 1955-07-14 | 1955-07-30 |
| 1956 | 1956-07-30 | 1956-08-16 |
| 1957 | 1957-08-05 | 1957-08-20 |
| 1958 | 1958-08-02 | 1958-09-18 |
| 1959 | 1959-07-25 | 1959-09-02 |
| 1960 | 1960-08-01 | 1960-08-09 |
| 1961 | 1961-07-09 | 1961-09-05 |
| 1962 | 1962-08-04 | 1962-08-21 |
| 1963 | 1963-08-16 | 1963-08-16 |
| 1964 | 1964-08-10 | 1964-08-26 |
| 1965 | 1965-08-12 | 1965-08-24 |
| 1966 | 1966-06-29 | 1966-09-09 |
| 1967 | 1967-07-17 | 1967-09-13 |
| 1968 | 1968-08-04 | 1968-08-25 |
| 1969 | 1969-08-13 | 1969-08-13 |
| 1970 | 1970-08-05 | 1970-09-03 |
| 1971 | 1971-07-31 | 1971-08-15 |
| 1972 | 1972-08-04 | 1972-08-08 |
| 1973 | 1973-07-16 | 1973-08-28 |
| 1977 | 1977-08-04 | 1977-09-20 |
| 1978 | 1978-07-10 | 1978-09-17 |
| 1979 | 1979-07-31 | 1979-09-05 |
| 1980 | 1980-08-15 | 1980-08-15 |
| 1982 | 1982-08-29 | 1982-08-29 |
| 1983 | 1983-08-04 | 1983-09-13 |
| 1984 | 1984-08-04 | 1984-09-03 |
| 1985 | 1985-08-05 | 1985-08-30 |
| 1986 | 1986-08-31 | 1986-09-04 |
| 1987 | 1987-07-23 | 1987-09-09 |
| 1988 | 1988-08-23 | 1988-08-23 |
| 1989 | 1989-08-24 | 1989-08-24 |
| 1990 | 1990-06-22 | 1990-09-20 |
| 1991 | 1991-07-11 | 1991-09-07 |
| 1992 | 1992-07-29 | 1992-09-04 |
| 1993 | 1993-08-01 | 1993-08-01 |
| 1994 | 1994-07-05 | 1994-09-11 |
| 1995 | 1995-07-23 | 1995-09-11 |
| 1996 | 1996-07-11 | 1996-08-16 |
| 1997 | 1997-07-03 | 1997-09-08 |
| 1998 | 1998-06-28 | 1998-08-29 |
| 1999 | 1999-07-22 | 1999-09-25 |
| 2000 | 2000-07-08 | 2000-09-17 |
| 2025 | 2025-06-26 | 2025-09-29 |
| 2026 | 2026-07-14 | 2026-09-03 |
Every Fixed Threshold
| Threshold | Years with a qualifying day | Most days in a year | Year | Latest year days |
|---|---|---|---|---|
| 30 C (86 F): Days | 68 | 45 | 2025 | 17 |
| 35 C (95 F): Days | 2 | 1 | 1962 | 1 |
| 90 F (32.2 C): Days | 25 | 6 | 2025 | 3 |
| 0 C (32 F): Frost days (min | 72 | 41 | 1945 | 4 |
| 20 C (68 F): Tropical nights (min | 72 | 114 | 2025 | 99 |
| 25 C (77 F): Days with min | 43 | 43 | 2025 | 13 |
| 10 mm (0.39 in): Days with 10 mm or more rain | 61 | 65 | 1989 | 21 |
| 25 mm (0.98 in): Days with 25 mm or more rain | 61 | 34 | 1989 | 20 |
| 50 mm (1.97 in): Days with 50 mm or more rain | 61 | 15 | 1991 | 12 |
| 100 mm (3.94 in): Days with 100 mm or more rain | 38 | 3 | 1963 | 6 |
| 200 mm (7.87 in): Days with 200 mm or more rain | 7 | 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 1931.
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).