San Marcos Threshold Days by Year (MXN00012071)
14 fixed thresholds counted per year at San Marcos (MXN00012071): hot days, frost, tropical nights and heavy rain, with the most days in a year.
Key Facts for San Marcos Thresholds
- San Marcos: days with 10 mm (0.39 in) or more of precipitation in 47 years, most in 1973 with 47.
- San Marcos: days with 25 mm (0.98 in) or more of precipitation in 47 years, most in 2004 with 30.
- San Marcos: days with 50 mm (1.97 in) or more of precipitation in 47 years, most in 1969 with 14.
- San Marcos: days with a maximum temperature at or above 30 C (86 F) in 41 years, most in 1968 with 366.
- 14 fixed thresholds have at least one qualifying day at San Marcos.
Days at or above 30 C (86 F)
41 years with a qualifying day| Year | Days | Decade average |
|---|---|---|
| 1962 | 365 | 362 |
| 1963 | 365 | 362 |
| 1964 | 364 | 362 |
| 1965 | 356 | 362 |
| 1966 | 362 | 362 |
| 1968 | 366 | 362 |
| 1969 | 356 | 362 |
| 1972 | 366 | 357.1 |
| 1973 | 362 | 357.1 |
| 1974 | 349 | 357.1 |
| 1975 | 351 | 357.1 |
| 1976 | 349 | 357.1 |
| 1977 | 356 | 357.1 |
| 1978 | 361 | 357.1 |
| 1979 | 363 | 357.1 |
| 1980 | 361 | 348.7 |
| 1981 | 363 | 348.7 |
| 1982 | 359 | 348.7 |
| 1983 | 348 | 348.7 |
| 1984 | 347 | 348.7 |
| 1985 | 355 | 348.7 |
| 1986 | 361 | 348.7 |
| 1987 | 347 | 348.7 |
| 1988 | 325 | 348.7 |
| 1989 | 321 | 348.7 |
| 1990 | 365 | 360 |
| 1991 | 362 | 360 |
| 1992 | 352 | 360 |
| 1993 | 364 | 360 |
| 1994 | 345 | 360 |
| 1995 | 364 | 360 |
| 1996 | 366 | 360 |
| 1997 | 362 | 360 |
| 2001 | 341 | 332.5 |
| 2003 | 363 | 332.5 |
| 2004 | 361 | 332.5 |
| 2006 | 336 | 332.5 |
| 2008 | 266 | 332.5 |
| 2009 | 328 | 332.5 |
| 2010 | 314 | 312.5 |
| 2011 | 311 | 312.5 |
| Year | First date | Last date |
|---|---|---|
| 1962 | 1962-01-01 | 1962-12-31 |
| 1963 | 1963-01-01 | 1963-12-31 |
| 1964 | 1964-01-01 | 1964-12-31 |
| 1965 | 1965-01-01 | 1965-12-31 |
| 1966 | 1966-01-01 | 1966-12-31 |
| 1968 | 1968-01-01 | 1968-12-31 |
| 1969 | 1969-01-10 | 1969-12-31 |
| 1972 | 1972-01-01 | 1972-12-31 |
| 1973 | 1973-01-01 | 1973-12-31 |
| 1974 | 1974-01-01 | 1974-12-31 |
| 1975 | 1975-01-01 | 1975-12-31 |
| 1976 | 1976-01-01 | 1976-12-31 |
| 1977 | 1977-01-01 | 1977-12-31 |
| 1978 | 1978-01-01 | 1978-12-31 |
| 1979 | 1979-01-01 | 1979-12-31 |
| 1980 | 1980-01-01 | 1980-12-31 |
| 1981 | 1981-01-01 | 1981-12-31 |
| 1982 | 1982-01-01 | 1982-12-31 |
| 1983 | 1983-01-01 | 1983-12-31 |
| 1984 | 1984-01-01 | 1984-12-31 |
| 1985 | 1985-01-01 | 1985-12-31 |
| 1986 | 1986-01-01 | 1986-12-31 |
| 1987 | 1987-01-01 | 1987-12-31 |
| 1988 | 1988-01-01 | 1988-11-30 |
| 1989 | 1989-01-01 | 1989-11-30 |
| 1990 | 1990-01-01 | 1990-12-31 |
| 1991 | 1991-01-01 | 1991-12-31 |
| 1992 | 1992-01-01 | 1992-12-31 |
| 1993 | 1993-01-01 | 1993-12-31 |
| 1994 | 1994-01-01 | 1994-12-31 |
| 1995 | 1995-01-01 | 1995-12-31 |
| 1996 | 1996-01-01 | 1996-12-31 |
| 1997 | 1997-01-01 | 1997-12-31 |
| 2001 | 2001-01-01 | 2001-12-31 |
| 2003 | 2003-01-01 | 2003-12-31 |
| 2004 | 2004-01-01 | 2004-12-31 |
| 2006 | 2006-01-01 | 2006-12-31 |
| 2008 | 2008-01-01 | 2008-11-05 |
| 2009 | 2009-01-01 | 2009-12-31 |
| 2010 | 2010-01-01 | 2010-12-31 |
| 2011 | 2011-01-01 | 2011-12-31 |
Every Fixed Threshold
| Threshold | Years with a qualifying day | Most days in a year | Year | Latest year days |
|---|---|---|---|---|
| 30 C (86 F): Days | 41 | 366 | 1968 | 311 |
| 35 C (95 F): Days | 41 | 338 | 1979 | 167 |
| 40 C (104 F): Days | 9 | 71 | 1979 | 4 |
| 45 C (113 F): Days | 1 | 2 | 1979 | 2 |
| 90 F (32.2 C): Days | 41 | 366 | 1968 | 232 |
| 100 F (37.8 C): Days | 20 | 231 | 1979 | 93 |
| 110 F (43.3 C): Days | 3 | 3 | 1979 | 1 |
| 20 C (68 F): Tropical nights (min | 35 | 340 | 1994 | 16 |
| 25 C (77 F): Days with min | 24 | 27 | 1980 | 3 |
| 10 mm (0.39 in): Days with 10 mm or more rain | 47 | 47 | 1973 | 20 |
| 25 mm (0.98 in): Days with 25 mm or more rain | 47 | 30 | 2004 | 8 |
| 50 mm (1.97 in): Days with 50 mm or more rain | 47 | 14 | 1969 | 2 |
| 100 mm (3.94 in): Days with 100 mm or more rain | 27 | 7 | 1974 | 2 |
| 200 mm (7.87 in): Days with 200 mm or more rain | 6 | 3 | 1974 | 1 |
Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1962.
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).