Santa Maria Chilchotla Threshold Days by Year (MXN00020029)
11 fixed thresholds counted per year at Santa Maria Chilchotla (MXN00020029): hot days, frost, tropical nights and heavy rain, with the most days in a year.
Key Facts for Santa Maria Chilchotla Thresholds
- Santa Maria Chilchotla: days with 10 mm (0.39 in) or more of precipitation in 42 years, most in 1978 with 132.
- Santa Maria Chilchotla: days with 25 mm (0.98 in) or more of precipitation in 42 years, most in 1981 with 72.
- Santa Maria Chilchotla: days with 50 mm (1.97 in) or more of precipitation in 42 years, most in 1981 with 43.
- Santa Maria Chilchotla: days with 100 mm (3.94 in) or more of precipitation in 41 years, most in 1975 with 15.
- 11 fixed thresholds have at least one qualifying day at Santa Maria Chilchotla.
Days at or above 30 C (86 F)
36 years with a qualifying day| Year | Days | Decade average |
|---|---|---|
| 1954 | 9 | 7.7 |
| 1958 | 11 | 7.7 |
| 1959 | 3 | 7.7 |
| 1960 | 10 | 10 |
| 1961 | 15 | 10 |
| 1962 | 14 | 10 |
| 1963 | 4 | 10 |
| 1965 | 5 | 10 |
| 1966 | 16 | 10 |
| 1967 | 10 | 10 |
| 1968 | 6 | 10 |
| 1970 | 13 | 17.9 |
| 1971 | 27 | 17.9 |
| 1972 | 29 | 17.9 |
| 1973 | 22 | 17.9 |
| 1974 | 12 | 17.9 |
| 1975 | 3 | 17.9 |
| 1977 | 28 | 17.9 |
| 1978 | 19 | 17.9 |
| 1979 | 8 | 17.9 |
| 1981 | 6 | 11.3 |
| 1982 | 1 | 11.3 |
| 1983 | 17 | 11.3 |
| 1984 | 21 | 11.3 |
| 1993 | 5 | 5 |
| 2000 | 11 | 15.1 |
| 2001 | 8 | 15.1 |
| 2002 | 16 | 15.1 |
| 2003 | 24 | 15.1 |
| 2004 | 6 | 15.1 |
| 2005 | 18 | 15.1 |
| 2006 | 23 | 15.1 |
| 2007 | 9 | 15.1 |
| 2008 | 20 | 15.1 |
| 2009 | 16 | 15.1 |
| 2010 | 26 | 26 |
| Year | First date | Last date |
|---|---|---|
| 1954 | 1954-03-11 | 1954-05-02 |
| 1958 | 1958-03-29 | 1958-06-17 |
| 1959 | 1959-03-14 | 1959-05-20 |
| 1960 | 1960-02-10 | 1960-05-06 |
| 1961 | 1961-03-17 | 1961-04-15 |
| 1962 | 1962-02-22 | 1962-04-30 |
| 1963 | 1963-02-18 | 1963-03-19 |
| 1965 | 1965-02-26 | 1965-04-26 |
| 1966 | 1966-01-06 | 1966-12-23 |
| 1967 | 1967-01-04 | 1967-02-24 |
| 1968 | 1968-02-29 | 1968-12-03 |
| 1970 | 1970-03-10 | 1970-04-30 |
| 1971 | 1971-02-21 | 1971-12-16 |
| 1972 | 1972-01-04 | 1972-11-18 |
| 1973 | 1973-01-31 | 1973-12-30 |
| 1974 | 1974-02-15 | 1974-06-08 |
| 1975 | 1975-03-23 | 1975-05-30 |
| 1977 | 1977-01-09 | 1977-12-05 |
| 1978 | 1978-03-02 | 1978-05-17 |
| 1979 | 1979-01-25 | 1979-05-26 |
| 1981 | 1981-03-04 | 1981-05-18 |
| 1982 | 1982-04-08 | 1982-04-08 |
| 1983 | 1983-03-05 | 1983-05-21 |
| 1984 | 1984-03-26 | 1984-05-07 |
| 1993 | 1993-03-30 | 1993-06-02 |
| 2000 | 2000-01-03 | 2000-11-08 |
| 2001 | 2001-03-11 | 2001-12-13 |
| 2002 | 2002-03-14 | 2002-06-26 |
| 2003 | 2003-03-05 | 2003-11-23 |
| 2004 | 2004-02-05 | 2004-05-30 |
| 2005 | 2005-03-25 | 2005-12-30 |
| 2006 | 2006-01-01 | 2006-10-26 |
| 2007 | 2007-03-01 | 2007-06-07 |
| 2008 | 2008-01-29 | 2008-11-29 |
| 2009 | 2009-01-06 | 2009-12-09 |
| 2010 | 2010-01-20 | 2010-12-31 |
Every Fixed Threshold
| Threshold | Years with a qualifying day | Most days in a year | Year | Latest year days |
|---|---|---|---|---|
| 30 C (86 F): Days | 36 | 29 | 1972 | 26 |
| 35 C (95 F): Days | 16 | 6 | 2010 | 6 |
| 90 F (32.2 C): Days | 28 | 11 | 1984 | 10 |
| 100 F (37.8 C): Days | 1 | 1 | 2008 | 1 |
| 20 C (68 F): Tropical nights (min | 33 | 34 | 1983 | 7 |
| 25 C (77 F): Days with min | 1 | 1 | 1984 | 1 |
| 10 mm (0.39 in): Days with 10 mm or more rain | 42 | 132 | 1978 | 90 |
| 25 mm (0.98 in): Days with 25 mm or more rain | 42 | 72 | 1981 | 55 |
| 50 mm (1.97 in): Days with 50 mm or more rain | 42 | 43 | 1981 | 27 |
| 100 mm (3.94 in): Days with 100 mm or more rain | 41 | 15 | 1975 | 7 |
| 200 mm (7.87 in): Days with 200 mm or more rain | 17 | 4 | 1960 | 2 |
Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1954.
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).