Dortmund Threshold Days by Year (GME00121342)
12 fixed thresholds counted per year at Dortmund (GME00121342): hot days, frost, tropical nights and heavy rain, with the most days in a year.
Key Facts for Dortmund Thresholds
- Dortmund: days with 10 mm (0.39 in) or more of precipitation in 56 years, most in 1961 with 38.
- Dortmund: nights with a minimum temperature at or below 0 C (32 F) in 48 years, most in 1963 with 96.
- Dortmund: days with 25 mm (0.98 in) or more of precipitation in 47 years, most in 1952 with 5.
- Dortmund: days with a maximum temperature at or below 0 C (32 F) in 43 years, most in 1963 with 54.
- 12 fixed thresholds have at least one qualifying day at Dortmund.
Days at or above 30 C (86 F)
41 years with a qualifying day| Year | Days | Decade average |
|---|---|---|
| 1950 | 4 | 4.9 |
| 1951 | 4 | 4.9 |
| 1952 | 8 | 4.9 |
| 1953 | 4 | 4.9 |
| 1955 | 2 | 4.9 |
| 1957 | 10 | 4.9 |
| 1958 | 1 | 4.9 |
| 1959 | 6 | 4.9 |
| 1961 | 7 | 5.1 |
| 1963 | 3 | 5.1 |
| 1964 | 9 | 5.1 |
| 1966 | 3 | 5.1 |
| 1967 | 4 | 5.1 |
| 1968 | 3 | 5.1 |
| 1969 | 7 | 5.1 |
| 1970 | 1 | 4 |
| 1971 | 1 | 4 |
| 1972 | 4 | 4 |
| 1973 | 10 | 4 |
| 1974 | 3 | 4 |
| 1976 | 12 | 4 |
| 1977 | 1 | 4 |
| 1978 | 3 | 4 |
| 1979 | 1 | 4 |
| 1980 | 2 | 4.8 |
| 1981 | 4 | 4.8 |
| 1982 | 5 | 4.8 |
| 1983 | 10 | 4.8 |
| 1984 | 4 | 4.8 |
| 1985 | 2 | 4.8 |
| 1986 | 5 | 4.8 |
| 1987 | 4 | 4.8 |
| 1989 | 7 | 4.8 |
| 1990 | 6 | 8.1 |
| 1991 | 6 | 8.1 |
| 1992 | 7 | 8.1 |
| 1994 | 19 | 8.1 |
| 1995 | 13 | 8.1 |
| 1996 | 3 | 8.1 |
| 1997 | 6 | 8.1 |
| 1998 | 5 | 8.1 |
| Year | First date | Last date |
|---|---|---|
| 1950 | 1950-06-06 | 1950-08-23 |
| 1951 | 1951-07-11 | 1951-08-30 |
| 1952 | 1952-06-29 | 1952-08-12 |
| 1953 | 1953-05-19 | 1953-08-15 |
| 1955 | 1955-07-17 | 1955-07-18 |
| 1957 | 1957-06-17 | 1957-07-07 |
| 1958 | 1958-08-30 | 1958-08-30 |
| 1959 | 1959-07-08 | 1959-09-11 |
| 1961 | 1961-06-26 | 1961-09-19 |
| 1963 | 1963-07-22 | 1963-08-03 |
| 1964 | 1964-06-13 | 1964-08-28 |
| 1966 | 1966-06-17 | 1966-08-13 |
| 1967 | 1967-06-25 | 1967-08-01 |
| 1968 | 1968-04-21 | 1968-07-02 |
| 1969 | 1969-05-13 | 1969-08-02 |
| 1970 | 1970-06-27 | 1970-06-27 |
| 1971 | 1971-08-03 | 1971-08-03 |
| 1972 | 1972-07-18 | 1972-07-21 |
| 1973 | 1973-06-26 | 1973-09-06 |
| 1974 | 1974-08-14 | 1974-08-16 |
| 1976 | 1976-05-10 | 1976-07-16 |
| 1977 | 1977-06-13 | 1977-06-13 |
| 1978 | 1978-07-29 | 1978-07-31 |
| 1979 | 1979-06-03 | 1979-06-03 |
| 1980 | 1980-08-02 | 1980-08-03 |
| 1981 | 1981-06-02 | 1981-08-07 |
| 1982 | 1982-06-03 | 1982-08-02 |
| 1983 | 1983-07-10 | 1983-08-20 |
| 1984 | 1984-07-09 | 1984-07-31 |
| 1985 | 1985-07-14 | 1985-08-14 |
| 1986 | 1986-06-16 | 1986-08-04 |
| 1987 | 1987-06-29 | 1987-08-22 |
| 1989 | 1989-07-06 | 1989-08-21 |
| 1990 | 1990-07-28 | 1990-08-12 |
| 1991 | 1991-07-06 | 1991-08-22 |
| 1992 | 1992-05-14 | 1992-08-09 |
| 1994 | 1994-06-25 | 1994-08-05 |
| 1995 | 1995-07-09 | 1995-08-22 |
| 1996 | 1996-06-06 | 1996-06-08 |
| 1997 | 1997-08-10 | 1997-08-25 |
| 1998 | 1998-06-21 | 1998-08-12 |
Every Fixed Threshold
| Threshold | Years with a qualifying day | Most days in a year | Year | Latest year days |
|---|---|---|---|---|
| 30 C (86 F): Days | 41 | 19 | 1994 | 5 |
| 35 C (95 F): Days | 4 | 1 | 1952 | 1 |
| 90 F (32.2 C): Days | 24 | 6 | 1957 | 2 |
| 0 C (32 F): Ice days (max | 43 | 54 | 1963 | 6 |
| 0 C (32 F): Frost days (min | 48 | 96 | 1963 | 43 |
| -10 C (14 F): Days with min | 35 | 23 | 1985 | 8 |
| -20 C (-4 F): Days with min | 1 | 1 | 1956 | 1 |
| 20 C (68 F): Tropical nights (min | 17 | 4 | 1994 | 1 |
| 10 mm (0.39 in): Days with 10 mm or more rain | 56 | 38 | 1961 | 25 |
| 25 mm (0.98 in): Days with 25 mm or more rain | 47 | 5 | 1952 | 5 |
| 50 mm (1.97 in): Days with 50 mm or more rain | 8 | 2 | 1968 | 2 |
| 100 mm (3.94 in): Days with 100 mm or more rain | 1 | 1 | 1951 | 1 |
Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1950.
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).