San Marcos Threshold Days by Year (MXN00018080)
12 fixed thresholds counted per year at San Marcos (MXN00018080): 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 18 years, most in 2008 with 46.
- San Marcos: days with 25 mm (0.98 in) or more of precipitation in 18 years, most in 1996 with 23.
- San Marcos: days with 50 mm (1.97 in) or more of precipitation in 16 years, most in 1996 with 12.
- San Marcos: days with a maximum temperature at or above 30 C (86 F) in 15 years, most in 2004 with 366.
- 12 fixed thresholds have at least one qualifying day at San Marcos.
Days at or above 30 C (86 F)
15 years with a qualifying day| Year | Days | Decade average |
|---|---|---|
| 1992 | 359 | 338.8 |
| 1994 | 364 | 338.8 |
| 1995 | 327 | 338.8 |
| 1996 | 339 | 338.8 |
| 1997 | 289 | 338.8 |
| 1998 | 355 | 338.8 |
| 2001 | 324 | 307 |
| 2002 | 336 | 307 |
| 2004 | 366 | 307 |
| 2005 | 363 | 307 |
| 2006 | 243 | 307 |
| 2008 | 246 | 307 |
| 2009 | 271 | 307 |
| 2011 | 204 | 225 |
| 2012 | 246 | 225 |
| Year | First date | Last date |
|---|---|---|
| 1992 | 1992-01-01 | 1992-12-31 |
| 1994 | 1994-01-01 | 1994-12-30 |
| 1995 | 1995-01-21 | 1995-12-31 |
| 1996 | 1996-01-01 | 1996-12-27 |
| 1997 | 1997-01-01 | 1997-12-31 |
| 1998 | 1998-01-01 | 1998-12-31 |
| 2001 | 2001-01-01 | 2001-12-31 |
| 2002 | 2002-01-01 | 2002-12-31 |
| 2004 | 2004-01-01 | 2004-12-31 |
| 2005 | 2005-01-01 | 2005-12-31 |
| 2006 | 2006-01-01 | 2006-12-31 |
| 2008 | 2008-01-04 | 2008-12-31 |
| 2009 | 2009-01-01 | 2009-12-26 |
| 2011 | 2011-05-01 | 2011-12-01 |
| 2012 | 2012-02-01 | 2012-12-31 |
Every Fixed Threshold
| Threshold | Years with a qualifying day | Most days in a year | Year | Latest year days |
|---|---|---|---|---|
| 30 C (86 F): Days | 15 | 366 | 2004 | 246 |
| 35 C (95 F): Days | 15 | 335 | 1994 | 84 |
| 40 C (104 F): Days | 10 | 89 | 2005 | 89 |
| 90 F (32.2 C): Days | 15 | 364 | 1994 | 141 |
| 100 F (37.8 C): Days | 11 | 177 | 1992 | 1 |
| 110 F (43.3 C): Days | 1 | 1 | 2005 | 1 |
| 20 C (68 F): Tropical nights (min | 15 | 243 | 2004 | 159 |
| 25 C (77 F): Days with min | 14 | 79 | 2002 | 47 |
| 10 mm (0.39 in): Days with 10 mm or more rain | 18 | 46 | 2008 | 25 |
| 25 mm (0.98 in): Days with 25 mm or more rain | 18 | 23 | 1996 | 6 |
| 50 mm (1.97 in): Days with 50 mm or more rain | 16 | 12 | 1996 | 3 |
| 100 mm (3.94 in): Days with 100 mm or more rain | 9 | 5 | 2002 | 2 |
Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1992.
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).