Chaco Canyon Natl Mon Threshold Days by Year (USC00291647)
17 fixed thresholds counted per year at Chaco Canyon Natl Mon (USC00291647): hot days, frost, tropical nights and heavy rain, with the most days in a year.
Key Facts for Chaco Canyon Natl Mon Thresholds
- Chaco Canyon Natl Mon: days with 10 mm (0.39 in) or more of precipitation in 71 years, most in 1986 with 13.
- Chaco Canyon Natl Mon: nights with a minimum temperature at or below 0 C (32 F) in 70 years, most in 1968 with 226.
- Chaco Canyon Natl Mon: nights with a minimum temperature at or below -10 C (14 F) in 70 years, most in 1976 with 98.
- Chaco Canyon Natl Mon: days with a maximum temperature at or above 30 C (86 F) in 61 years, most in 1937 with 104.
- 17 fixed thresholds have at least one qualifying day at Chaco Canyon Natl Mon.
Days at or above 30 C (86 F)
61 years with a qualifying day| Year | Days | Decade average |
|---|---|---|
| 1933 | 79 | 73.3 |
| 1934 | 52 | 73.3 |
| 1935 | 39 | 73.3 |
| 1936 | 73 | 73.3 |
| 1937 | 104 | 73.3 |
| 1938 | 78 | 73.3 |
| 1939 | 88 | 73.3 |
| 1941 | 64 | 83.9 |
| 1942 | 97 | 83.9 |
| 1945 | 91 | 83.9 |
| 1946 | 87 | 83.9 |
| 1947 | 69 | 83.9 |
| 1948 | 96 | 83.9 |
| 1949 | 83 | 83.9 |
| 1950 | 89 | 79.9 |
| 1951 | 81 | 79.9 |
| 1952 | 87 | 79.9 |
| 1953 | 92 | 79.9 |
| 1954 | 67 | 79.9 |
| 1955 | 73 | 79.9 |
| 1956 | 85 | 79.9 |
| 1957 | 63 | 79.9 |
| 1958 | 82 | 79.9 |
| 1960 | 88 | 69.4 |
| 1961 | 73 | 69.4 |
| 1962 | 83 | 69.4 |
| 1963 | 66 | 69.4 |
| 1964 | 61 | 69.4 |
| 1965 | 54 | 69.4 |
| 1966 | 73 | 69.4 |
| 1967 | 58 | 69.4 |
| 1968 | 61 | 69.4 |
| 1969 | 77 | 69.4 |
| 1970 | 49 | 73.9 |
| 1971 | 84 | 73.9 |
| 1972 | 68 | 73.9 |
| 1974 | 82 | 73.9 |
| 1975 | 65 | 73.9 |
| 1976 | 79 | 73.9 |
| 1977 | 76 | 73.9 |
| 1978 | 84 | 73.9 |
| 1979 | 78 | 73.9 |
| 1983 | 61 | 67.1 |
| 1984 | 86 | 67.1 |
| 1985 | 69 | 67.1 |
| 1986 | 61 | 67.1 |
| 1987 | 65 | 67.1 |
| 1988 | 65 | 67.1 |
| 1989 | 63 | 67.1 |
| 1990 | 71 | 65.4 |
| 1991 | 58 | 65.4 |
| 1992 | 53 | 65.4 |
| 1993 | 63 | 65.4 |
| 1996 | 82 | 65.4 |
| 2008 | 76 | 71.5 |
| 2009 | 67 | 71.5 |
| 2010 | 84 | 78 |
| 2011 | 94 | 78 |
| 2014 | 84 | 78 |
| 2015 | 62 | 78 |
| 2017 | 66 | 78 |
| Year | First date | Last date |
|---|---|---|
| 1933 | 1933-05-31 | 1933-09-30 |
| 1934 | 1934-05-07 | 1934-09-04 |
| 1935 | 1935-06-10 | 1935-09-21 |
| 1936 | 1936-06-12 | 1936-09-16 |
| 1937 | 1937-05-14 | 1937-10-01 |
| 1938 | 1938-05-15 | 1938-09-27 |
| 1939 | 1939-05-28 | 1939-09-24 |
| 1941 | 1941-06-16 | 1941-09-12 |
| 1942 | 1942-05-26 | 1942-10-09 |
| 1945 | 1945-05-26 | 1945-10-05 |
| 1946 | 1946-06-03 | 1946-09-13 |
| 1947 | 1947-05-02 | 1947-10-04 |
| 1948 | 1948-05-16 | 1948-09-15 |
| 1949 | 1949-05-25 | 1949-10-04 |
| 1950 | 1950-05-30 | 1950-10-13 |
| 1951 | 1951-05-26 | 1951-09-20 |
| 1952 | 1952-06-06 | 1952-09-19 |
| 1953 | 1953-05-26 | 1953-10-01 |
| 1954 | 1954-05-20 | 1954-09-04 |
| 1955 | 1955-06-07 | 1955-09-14 |
| 1956 | 1956-05-18 | 1956-09-27 |
| 1957 | 1957-06-03 | 1957-09-30 |
| 1958 | 1958-05-24 | 1958-09-11 |
| 1960 | 1960-05-12 | 1960-09-17 |
| 1961 | 1961-05-19 | 1961-08-28 |
| 1962 | 1962-05-11 | 1962-09-19 |
| 1963 | 1963-05-29 | 1963-09-18 |
| 1964 | 1964-05-16 | 1964-09-08 |
| 1965 | 1965-06-15 | 1965-08-28 |
| 1966 | 1966-05-29 | 1966-09-23 |
| 1967 | 1967-05-22 | 1967-09-05 |
| 1968 | 1968-05-29 | 1968-09-11 |
| 1969 | 1969-05-20 | 1969-09-27 |
| 1970 | 1970-05-17 | 1970-09-11 |
| 1971 | 1971-06-04 | 1971-09-15 |
| 1972 | 1972-06-01 | 1972-09-06 |
| 1974 | 1974-05-09 | 1974-09-12 |
| 1975 | 1975-06-02 | 1975-09-03 |
| 1976 | 1976-05-30 | 1976-09-13 |
| 1977 | 1977-05-31 | 1977-09-09 |
| 1978 | 1978-05-14 | 1978-09-25 |
| 1979 | 1979-06-06 | 1979-09-25 |
| 1983 | 1983-05-27 | 1983-09-18 |
| 1984 | 1984-05-12 | 1984-09-15 |
| 1985 | 1985-06-06 | 1985-09-06 |
| 1986 | 1986-06-05 | 1986-09-07 |
| 1987 | 1987-05-16 | 1987-09-02 |
| 1988 | 1988-05-16 | 1988-09-11 |
| 1989 | 1989-05-07 | 1989-09-07 |
| 1990 | 1990-05-22 | 1990-09-14 |
| 1991 | 1991-06-18 | 1991-09-03 |
| 1992 | 1992-06-14 | 1992-09-12 |
| 1993 | 1993-05-31 | 1993-09-23 |
| 1996 | 1996-04-25 | 1996-09-04 |
| 2008 | 2008-05-19 | 2008-09-16 |
| 2009 | 2009-05-08 | 2009-09-04 |
| 2010 | 2010-05-26 | 2010-09-30 |
| 2011 | 2011-05-27 | 2011-09-30 |
| 2014 | 2014-05-28 | 2014-09-25 |
| 2015 | 2015-06-04 | 2015-10-01 |
| 2017 | 2017-06-03 | 2017-09-13 |
Every Fixed Threshold
| Threshold | Years with a qualifying day | Most days in a year | Year | Latest year days |
|---|---|---|---|---|
| 30 C (86 F): Days | 61 | 104 | 1937 | 66 |
| 35 C (95 F): Days | 60 | 43 | 1945 | 11 |
| 40 C (104 F): Days | 3 | 1 | 1942 | 1 |
| 90 F (32.2 C): Days | 61 | 72 | 1950 | 42 |
| 100 F (37.8 C): Days | 14 | 5 | 1942 | 1 |
| 0 C (32 F): Ice days (max | 61 | 28 | 1935 | 5 |
| 0 C (32 F): Frost days (min | 70 | 226 | 1968 | 164 |
| -10 C (14 F): Days with min | 70 | 98 | 1976 | 25 |
| -20 C (-4 F): Days with min | 57 | 16 | 1963 | 2 |
| -30 C (-22 F): Days with min | 11 | 4 | 1971 | 1 |
| 20 C (68 F): Tropical nights (min | 17 | 3 | 2010 | 3 |
| 25 C (77 F): Days with min | 1 | 0 | n/a | 1 |
| 10 mm (0.39 in): Days with 10 mm or more rain | 71 | 13 | 1986 | 3 |
| 25 mm (0.98 in): Days with 25 mm or more rain | 26 | 3 | 1978 | 1 |
| 50 mm (1.97 in): Days with 50 mm or more rain | 1 | 0 | n/a | 1 |
| 10 cm (3.9 in): Days with 10 cm or more snowfall | 34 | 4 | 1991 | 1 |
| 25 cm (9.8 in): Days with 25 cm or more snowfall | 1 | 1 | 1949 | 1 |
Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1933.
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).