Santiago Undameo Threshold Days by Year (MXN00016120)
9 fixed thresholds counted per year at Santiago Undameo (MXN00016120): hot days, frost, tropical nights and heavy rain, with the most days in a year.
Key Facts for Santiago Undameo Thresholds
- Santiago Undameo: nights with a minimum temperature at or below 0 C (32 F) in 50 years, most in 2000 with 57.
- Santiago Undameo: days with 10 mm (0.39 in) or more of precipitation in 49 years, most in 1958 with 44.
- Santiago Undameo: days with a maximum temperature at or above 30 C (86 F) in 48 years, most in 1998 with 111.
- Santiago Undameo: days with 25 mm (0.98 in) or more of precipitation in 48 years, most in 1958 with 10.
- 9 fixed thresholds have at least one qualifying day at Santiago Undameo.
Days at or above 30 C (86 F)
48 years with a qualifying day| Year | Days | Decade average |
|---|---|---|
| 1954 | 16 | 10 |
| 1955 | 22 | 10 |
| 1956 | 6 | 10 |
| 1957 | 2 | 10 |
| 1958 | 4 | 10 |
| 1960 | 1 | 14.1 |
| 1961 | 11 | 14.1 |
| 1962 | 5 | 14.1 |
| 1963 | 26 | 14.1 |
| 1964 | 22 | 14.1 |
| 1965 | 15 | 14.1 |
| 1966 | 6 | 14.1 |
| 1967 | 13 | 14.1 |
| 1968 | 9 | 14.1 |
| 1969 | 33 | 14.1 |
| 1970 | 77 | 26.2 |
| 1971 | 60 | 26.2 |
| 1972 | 32 | 26.2 |
| 1973 | 16 | 26.2 |
| 1974 | 11 | 26.2 |
| 1975 | 29 | 26.2 |
| 1976 | 1 | 26.2 |
| 1978 | 7 | 26.2 |
| 1979 | 3 | 26.2 |
| 1980 | 25 | 35.9 |
| 1981 | 25 | 35.9 |
| 1982 | 69 | 35.9 |
| 1983 | 52 | 35.9 |
| 1984 | 28 | 35.9 |
| 1985 | 16 | 35.9 |
| 1986 | 26 | 35.9 |
| 1987 | 60 | 35.9 |
| 1988 | 16 | 35.9 |
| 1989 | 42 | 35.9 |
| 1990 | 35 | 65.6 |
| 1991 | 89 | 65.6 |
| 1992 | 23 | 65.6 |
| 1993 | 61 | 65.6 |
| 1994 | 66 | 65.6 |
| 1995 | 88 | 65.6 |
| 1996 | 65 | 65.6 |
| 1997 | 42 | 65.6 |
| 1998 | 111 | 65.6 |
| 1999 | 76 | 65.6 |
| 2000 | 74 | 62 |
| 2001 | 68 | 62 |
| 2004 | 22 | 62 |
| 2005 | 84 | 62 |
| Year | First date | Last date |
|---|---|---|
| 1954 | 1954-03-21 | 1954-06-03 |
| 1955 | 1955-04-06 | 1955-05-28 |
| 1956 | 1956-04-05 | 1956-04-17 |
| 1957 | 1957-05-23 | 1957-05-24 |
| 1958 | 1958-04-05 | 1958-04-30 |
| 1960 | 1960-05-20 | 1960-05-20 |
| 1961 | 1961-04-15 | 1961-05-08 |
| 1962 | 1962-05-22 | 1962-06-02 |
| 1963 | 1963-04-10 | 1963-06-09 |
| 1964 | 1964-04-01 | 1964-05-09 |
| 1965 | 1965-05-08 | 1965-06-09 |
| 1966 | 1966-05-11 | 1966-06-06 |
| 1967 | 1967-04-15 | 1967-05-12 |
| 1968 | 1968-04-14 | 1968-06-09 |
| 1969 | 1969-04-04 | 1969-06-19 |
| 1970 | 1970-03-15 | 1970-06-19 |
| 1971 | 1971-03-01 | 1971-06-10 |
| 1972 | 1972-04-07 | 1972-05-24 |
| 1973 | 1973-03-27 | 1973-06-04 |
| 1974 | 1974-04-21 | 1974-05-21 |
| 1975 | 1975-03-22 | 1975-05-09 |
| 1976 | 1976-05-26 | 1976-05-26 |
| 1978 | 1978-04-18 | 1978-05-10 |
| 1979 | 1979-04-09 | 1979-07-20 |
| 1980 | 1980-03-09 | 1980-06-16 |
| 1981 | 1981-03-31 | 1981-06-09 |
| 1982 | 1982-03-13 | 1982-06-20 |
| 1983 | 1983-03-21 | 1983-06-19 |
| 1984 | 1984-03-28 | 1984-05-23 |
| 1985 | 1985-04-06 | 1985-06-01 |
| 1986 | 1986-04-02 | 1986-05-18 |
| 1987 | 1987-03-10 | 1987-06-27 |
| 1988 | 1988-03-25 | 1988-06-11 |
| 1989 | 1989-03-30 | 1989-06-13 |
| 1990 | 1990-03-07 | 1990-06-01 |
| 1991 | 1991-03-01 | 1991-06-14 |
| 1992 | 1992-03-20 | 1992-07-02 |
| 1993 | 1993-02-18 | 1993-06-19 |
| 1994 | 1994-03-05 | 1994-06-08 |
| 1995 | 1995-03-14 | 1995-06-25 |
| 1996 | 1996-02-20 | 1996-06-01 |
| 1997 | 1997-02-23 | 1997-06-17 |
| 1998 | 1998-02-19 | 1998-06-25 |
| 1999 | 1999-03-05 | 1999-06-09 |
| 2000 | 2000-03-01 | 2000-05-26 |
| 2001 | 2001-03-09 | 2001-08-23 |
| 2004 | 2004-03-07 | 2004-06-01 |
| 2005 | 2005-02-10 | 2005-06-26 |
Every Fixed Threshold
| Threshold | Years with a qualifying day | Most days in a year | Year | Latest year days |
|---|---|---|---|---|
| 30 C (86 F): Days | 48 | 111 | 1998 | 84 |
| 35 C (95 F): Days | 9 | 23 | 1998 | 21 |
| 40 C (104 F): Days | 1 | 1 | 1995 | 1 |
| 90 F (32.2 C): Days | 29 | 66 | 1998 | 55 |
| 100 F (37.8 C): Days | 2 | 2 | 1995 | 2 |
| 0 C (32 F): Frost days (min | 50 | 57 | 2000 | 17 |
| 10 mm (0.39 in): Days with 10 mm or more rain | 49 | 44 | 1958 | 29 |
| 25 mm (0.98 in): Days with 25 mm or more rain | 48 | 10 | 1958 | 10 |
| 50 mm (1.97 in): Days with 50 mm or more rain | 16 | 2 | 1956 | 1 |
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).