Duolun Threshold Days by Year (CHM00054208)
13 fixed thresholds counted per year at Duolun (CHM00054208): hot days, frost, tropical nights and heavy rain, with the most days in a year.
Key Facts for Duolun Thresholds
- Duolun: days with a maximum temperature at or below 0 C (32 F) in 67 years, most in 1956 with 129.
- Duolun: nights with a minimum temperature at or below 0 C (32 F) in 67 years, most in 1962 with 232.
- Duolun: nights with a minimum temperature at or below -10 C (14 F) in 67 years, most in 1962 with 149.
- Duolun: nights with a minimum temperature at or below -20 C (-4 F) in 67 years, most in 1956 with 100.
- 13 fixed thresholds have at least one qualifying day at Duolun.
Days at or above 30 C (86 F)
55 years with a qualifying day| Year | Days | Decade average |
|---|---|---|
| 1952 | 3 | 6 |
| 1955 | 6 | 6 |
| 1958 | 9 | 6 |
| 1960 | 2 | 6.1 |
| 1961 | 7 | 6.1 |
| 1962 | 9 | 6.1 |
| 1963 | 8 | 6.1 |
| 1964 | 4 | 6.1 |
| 1965 | 10 | 6.1 |
| 1966 | 2 | 6.1 |
| 1968 | 8 | 6.1 |
| 1969 | 5 | 6.1 |
| 1971 | 4 | 4.9 |
| 1972 | 16 | 4.9 |
| 1973 | 3 | 4.9 |
| 1974 | 3 | 4.9 |
| 1975 | 6 | 4.9 |
| 1976 | 2 | 4.9 |
| 1978 | 4 | 4.9 |
| 1979 | 1 | 4.9 |
| 1980 | 15 | 5.9 |
| 1981 | 4 | 5.9 |
| 1983 | 3 | 5.9 |
| 1984 | 2 | 5.9 |
| 1986 | 2 | 5.9 |
| 1987 | 12 | 5.9 |
| 1988 | 4 | 5.9 |
| 1989 | 5 | 5.9 |
| 1990 | 2 | 5.8 |
| 1991 | 8 | 5.8 |
| 1993 | 1 | 5.8 |
| 1994 | 2 | 5.8 |
| 1995 | 4 | 5.8 |
| 1996 | 2 | 5.8 |
| 1997 | 15 | 5.8 |
| 1998 | 3 | 5.8 |
| 1999 | 15 | 5.8 |
| 2000 | 21 | 14 |
| 2001 | 17 | 14 |
| 2002 | 15 | 14 |
| 2004 | 6 | 14 |
| 2005 | 10 | 14 |
| 2007 | 18 | 14 |
| 2008 | 13 | 14 |
| 2009 | 12 | 14 |
| 2010 | 16 | 8.8 |
| 2011 | 8 | 8.8 |
| 2012 | 2 | 8.8 |
| 2014 | 9 | 8.8 |
| 2020 | 7 | 16.5 |
| 2021 | 5 | 16.5 |
| 2022 | 24 | 16.5 |
| 2023 | 32 | 16.5 |
| 2024 | 21 | 16.5 |
| 2025 | 10 | 16.5 |
| Year | First date | Last date |
|---|---|---|
| 1952 | 1952-05-13 | 1952-08-21 |
| 1955 | 1955-07-20 | 1955-07-25 |
| 1958 | 1958-05-27 | 1958-07-21 |
| 1960 | 1960-06-30 | 1960-07-04 |
| 1961 | 1961-06-09 | 1961-07-13 |
| 1962 | 1962-05-21 | 1962-08-20 |
| 1963 | 1963-06-12 | 1963-08-01 |
| 1964 | 1964-06-25 | 1964-06-28 |
| 1965 | 1965-06-22 | 1965-08-25 |
| 1966 | 1966-07-17 | 1966-07-18 |
| 1968 | 1968-06-04 | 1968-07-24 |
| 1969 | 1969-05-20 | 1969-07-12 |
| 1971 | 1971-05-31 | 1971-07-29 |
| 1972 | 1972-05-05 | 1972-08-11 |
| 1973 | 1973-06-23 | 1973-08-05 |
| 1974 | 1974-05-26 | 1974-06-14 |
| 1975 | 1975-06-13 | 1975-08-20 |
| 1976 | 1976-06-26 | 1976-06-27 |
| 1978 | 1978-06-23 | 1978-08-22 |
| 1979 | 1979-08-08 | 1979-08-08 |
| 1980 | 1980-05-28 | 1980-07-30 |
| 1981 | 1981-06-07 | 1981-07-21 |
| 1983 | 1983-05-29 | 1983-08-02 |
| 1984 | 1984-08-05 | 1984-08-07 |
| 1986 | 1986-06-07 | 1986-06-08 |
| 1987 | 1987-06-04 | 1987-08-04 |
| 1988 | 1988-06-13 | 1988-07-20 |
| 1989 | 1989-07-29 | 1989-08-14 |
| 1990 | 1990-05-08 | 1990-07-23 |
| 1991 | 1991-05-19 | 1991-08-22 |
| 1993 | 1993-06-20 | 1993-06-20 |
| 1994 | 1994-06-17 | 1994-07-19 |
| 1995 | 1995-07-06 | 1995-07-09 |
| 1996 | 1996-05-30 | 1996-07-04 |
| 1997 | 1997-06-23 | 1997-09-08 |
| 1998 | 1998-06-25 | 1998-09-09 |
| 1999 | 1999-05-11 | 1999-08-16 |
| 2000 | 2000-05-23 | 2000-08-06 |
| 2001 | 2001-05-19 | 2001-07-23 |
| 2002 | 2002-06-03 | 2002-09-01 |
| 2004 | 2004-05-24 | 2004-08-08 |
| 2005 | 2005-06-12 | 2005-09-09 |
| 2007 | 2007-06-02 | 2007-08-20 |
| 2008 | 2008-05-26 | 2008-08-05 |
| 2009 | 2009-05-06 | 2009-08-15 |
| 2010 | 2010-06-26 | 2010-08-12 |
| 2011 | 2011-06-20 | 2011-08-13 |
| 2012 | 2012-07-19 | 2012-08-30 |
| 2014 | 2014-05-30 | 2014-07-31 |
| 2020 | 2020-05-01 | 2020-06-22 |
| 2021 | 2021-06-12 | 2021-07-12 |
| 2022 | 2022-06-02 | 2022-09-09 |
| 2023 | 2023-06-14 | 2023-08-21 |
| 2024 | 2024-05-22 | 2024-08-09 |
| 2025 | 2025-05-20 | 2025-07-05 |
Every Fixed Threshold
| Threshold | Years with a qualifying day | Most days in a year | Year | Latest year days |
|---|---|---|---|---|
| 30 C (86 F): Days | 55 | 32 | 2023 | 10 |
| 35 C (95 F): Days | 5 | 2 | 2000 | 2 |
| 90 F (32.2 C): Days | 27 | 11 | 2000 | 3 |
| 0 C (32 F): Ice days (max | 67 | 129 | 1956 | 54 |
| 0 C (32 F): Frost days (min | 67 | 232 | 1962 | 121 |
| -10 C (14 F): Days with min | 67 | 149 | 1962 | 72 |
| -20 C (-4 F): Days with min | 67 | 100 | 1956 | 39 |
| -30 C (-22 F): Days with min | 57 | 35 | 1957 | 6 |
| 20 C (68 F): Tropical nights (min | 4 | 4 | 2010 | 4 |
| 10 mm (0.39 in): Days with 10 mm or more rain | 67 | 19 | 2021 | 12 |
| 25 mm (0.98 in): Days with 25 mm or more rain | 61 | 5 | 1979 | 3 |
| 50 mm (1.97 in): Days with 50 mm or more rain | 17 | 2 | 2006 | 1 |
| 100 mm (3.94 in): Days with 100 mm or more rain | 3 | 1 | 1983 | 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).