Hefei Threshold Days by Year (CHM00058321)
16 fixed thresholds counted per year at Hefei (CHM00058321): hot days, frost, tropical nights and heavy rain, with the most days in a year.
Key Facts for Hefei Thresholds
- Hefei: days with 10 mm (0.39 in) or more of precipitation in 67 years, most in 2003 with 50.
- Hefei: days with 25 mm (0.98 in) or more of precipitation in 67 years, most in 2010 with 19.
- Hefei: days with a maximum temperature at or above 30 C (86 F) in 62 years, most in 2000 with 100.
- Hefei: days with a maximum temperature at or above 35 C (95 F) in 62 years, most in 1967 with 45.
- 16 fixed thresholds have at least one qualifying day at Hefei.
Days at or above 30 C (86 F)
62 years with a qualifying day| Year | Days | Decade average |
|---|---|---|
| 1952 | 47 | 68.3 |
| 1953 | 86 | 68.3 |
| 1954 | 51 | 68.3 |
| 1955 | 79 | 68.3 |
| 1956 | 63 | 68.3 |
| 1957 | 54 | 68.3 |
| 1958 | 80 | 68.3 |
| 1959 | 86 | 68.3 |
| 1960 | 78 | 80.9 |
| 1961 | 95 | 80.9 |
| 1962 | 66 | 80.9 |
| 1963 | 74 | 80.9 |
| 1964 | 88 | 80.9 |
| 1965 | 76 | 80.9 |
| 1966 | 81 | 80.9 |
| 1967 | 95 | 80.9 |
| 1968 | 83 | 80.9 |
| 1969 | 73 | 80.9 |
| 1970 | 63 | 69.7 |
| 1971 | 73 | 69.7 |
| 1972 | 67 | 69.7 |
| 1973 | 68 | 69.7 |
| 1974 | 66 | 69.7 |
| 1975 | 73 | 69.7 |
| 1976 | 53 | 69.7 |
| 1977 | 60 | 69.7 |
| 1978 | 94 | 69.7 |
| 1979 | 80 | 69.7 |
| 1980 | 46 | 65.1 |
| 1981 | 76 | 65.1 |
| 1982 | 64 | 65.1 |
| 1983 | 56 | 65.1 |
| 1984 | 68 | 65.1 |
| 1985 | 77 | 65.1 |
| 1986 | 82 | 65.1 |
| 1987 | 69 | 65.1 |
| 1988 | 71 | 65.1 |
| 1989 | 42 | 65.1 |
| 1990 | 87 | 76.4 |
| 1991 | 63 | 76.4 |
| 1992 | 74 | 76.4 |
| 1993 | 61 | 76.4 |
| 1994 | 87 | 76.4 |
| 1995 | 77 | 76.4 |
| 1996 | 62 | 76.4 |
| 1997 | 96 | 76.4 |
| 1998 | 83 | 76.4 |
| 1999 | 74 | 76.4 |
| 2000 | 100 | 85.1 |
| 2001 | 84 | 85.1 |
| 2002 | 87 | 85.1 |
| 2003 | 80 | 85.1 |
| 2004 | 77 | 85.1 |
| 2005 | 81 | 85.1 |
| 2006 | 87 | 85.1 |
| 2007 | 90 | 85.1 |
| 2008 | 78 | 85.1 |
| 2009 | 87 | 85.1 |
| 2010 | 80 | 80.7 |
| 2011 | 77 | 80.7 |
| 2012 | 85 | 80.7 |
| 2025 | 73 | 73 |
| Year | First date | Last date |
|---|---|---|
| 1952 | 1952-05-17 | 1952-09-24 |
| 1953 | 1953-04-28 | 1953-09-26 |
| 1954 | 1954-06-04 | 1954-09-22 |
| 1955 | 1955-04-11 | 1955-09-17 |
| 1956 | 1956-05-04 | 1956-09-12 |
| 1957 | 1957-05-20 | 1957-08-31 |
| 1958 | 1958-04-17 | 1958-09-15 |
| 1959 | 1959-05-31 | 1959-10-10 |
| 1960 | 1960-05-02 | 1960-09-29 |
| 1961 | 1961-05-06 | 1961-09-28 |
| 1962 | 1962-05-22 | 1962-09-22 |
| 1963 | 1963-04-16 | 1963-09-16 |
| 1964 | 1964-04-18 | 1964-10-04 |
| 1965 | 1965-05-09 | 1965-09-22 |
| 1966 | 1966-05-06 | 1966-10-02 |
| 1967 | 1967-04-29 | 1967-09-10 |
| 1968 | 1968-04-24 | 1968-10-06 |
| 1969 | 1969-05-03 | 1969-09-23 |
| 1970 | 1970-05-20 | 1970-09-08 |
| 1971 | 1971-06-02 | 1971-09-08 |
| 1972 | 1972-04-17 | 1972-09-19 |
| 1973 | 1973-06-07 | 1973-08-31 |
| 1974 | 1974-04-17 | 1974-09-28 |
| 1975 | 1975-05-29 | 1975-09-19 |
| 1976 | 1976-04-27 | 1976-09-06 |
| 1977 | 1977-04-23 | 1977-09-07 |
| 1978 | 1978-04-12 | 1978-10-02 |
| 1979 | 1979-05-22 | 1979-09-20 |
| 1980 | 1980-05-13 | 1980-09-15 |
| 1981 | 1981-05-01 | 1981-09-20 |
| 1982 | 1982-05-08 | 1982-09-02 |
| 1983 | 1983-05-08 | 1983-10-03 |
| 1984 | 1984-05-09 | 1984-09-24 |
| 1985 | 1985-04-30 | 1985-10-09 |
| 1986 | 1986-04-24 | 1986-10-16 |
| 1987 | 1987-04-19 | 1987-10-07 |
| 1988 | 1988-04-30 | 1988-09-18 |
| 1989 | 1989-06-01 | 1989-09-24 |
| 1990 | 1990-05-08 | 1990-09-21 |
| 1991 | 1991-05-16 | 1991-09-10 |
| 1992 | 1992-05-05 | 1992-10-02 |
| 1993 | 1993-04-22 | 1993-09-27 |
| 1994 | 1994-04-29 | 1994-10-15 |
| 1995 | 1995-05-07 | 1995-10-02 |
| 1996 | 1996-05-20 | 1996-09-25 |
| 1997 | 1997-05-02 | 1997-10-23 |
| 1998 | 1998-04-19 | 1998-10-02 |
| 1999 | 1999-05-13 | 1999-10-01 |
| 2000 | 2000-05-03 | 2000-10-10 |
| 2001 | 2001-05-12 | 2001-09-17 |
| 2002 | 2002-05-24 | 2002-10-16 |
| 2003 | 2003-05-19 | 2003-11-02 |
| 2004 | 2004-04-20 | 2004-09-19 |
| 2005 | 2005-04-08 | 2005-09-29 |
| 2006 | 2006-05-04 | 2006-09-04 |
| 2007 | 2007-03-29 | 2007-10-06 |
| 2008 | 2008-04-25 | 2008-09-23 |
| 2009 | 2009-05-07 | 2009-10-06 |
| 2010 | 2010-05-02 | 2010-09-21 |
| 2011 | 2011-04-25 | 2011-09-28 |
| 2012 | 2012-04-23 | 2012-09-07 |
| 2025 | 2025-03-25 | 2025-08-24 |
Every Fixed Threshold
| Threshold | Years with a qualifying day | Most days in a year | Year | Latest year days |
|---|---|---|---|---|
| 30 C (86 F): Days | 62 | 100 | 2000 | 73 |
| 35 C (95 F): Days | 62 | 45 | 1967 | 36 |
| 40 C (104 F): Days | 3 | 2 | 1959 | 1 |
| 90 F (32.2 C): Days | 62 | 71 | 1967 | 62 |
| 100 F (37.8 C): Days | 25 | 13 | 1959 | 10 |
| 0 C (32 F): Ice days (max | 40 | 16 | 1969 | 1 |
| 0 C (32 F): Frost days (min | 62 | 76 | 1969 | 46 |
| -10 C (14 F): Days with min | 14 | 12 | 1955 | 1 |
| -20 C (-4 F): Days with min | 1 | 1 | 1955 | 1 |
| 20 C (68 F): Tropical nights (min | 62 | 126 | 2007 | 65 |
| 25 C (77 F): Days with min | 62 | 62 | 1978 | 34 |
| 10 mm (0.39 in): Days with 10 mm or more rain | 67 | 50 | 2003 | 21 |
| 25 mm (0.98 in): Days with 25 mm or more rain | 67 | 19 | 2010 | 9 |
| 50 mm (1.97 in): Days with 50 mm or more rain | 61 | 9 | 1991 | 3 |
| 100 mm (3.94 in): Days with 100 mm or more rain | 20 | 2 | 2005 | 2 |
| 200 mm (7.87 in): Days with 200 mm or more rain | 1 | 1 | 1984 | 1 |
Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1952.
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).