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Weather & Climate in Santo Tomas, Mexico
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Santo Tomas experiences four distinct seasons with an average annual temperature of 55°F (13°C). Winters average 50°F in January while summers reach 56°F in July / relatively mild seasonal variation. The area gets 347 sunny days per year, well above the U.S. average of 205 / making it one of the sunnier locations in the country. Annual precipitation totals 32.4 inches. The city sits at an elevation of 8,711 feet.
Temperature
50°F Jan (10°C)
56°F Jul (13°C)
| Annual Average | 54.7°F |
| 1% above US avg | |
| January Average | 50°F (10°C) |
| July Average | 56°F (13°C) |
| Sunny Days | 347 days/yr |
Geography
| Elevation | 8,711 ft (2,655 m) |
| Area | 59.5 sq mi (154.1 km²) |
| Population Density | 36/sq mi |
| Coordinates | 19.9036°N, 98.5688°W |
| Timezone | America/Mexico_City |
Precipitation & Snow
Air Quality
Earthquake History
148 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M4.7.
| Feb 8, 2016 | 5 km WSW of Atecax, Mexico | M4.7 | 123 km | 10 km |
| Mar 4, 2000 | 3 km NE of Tulcingo, Mexico | M4.1 | 116 km | 0 km |
| Mar 12, 2000 | 1 km SE of Teocalco, Mexico | M4.1 | 76 km | 5 km |
| Apr 21, 1998 | central Mexico | M4.1 | 95 km | 0 km |
| May 6, 2013 | 12 km NW of San Pedro Benito Juárez, Mexico | M4.1 | 98 km | 1 km |
| Mar 21, 1998 | 8 km W of San Mateo Ozolco, Mexico | M4.1 | 88 km | 5 km |
| Feb 4, 2003 | Puebla region, Mexico | M4.1 | 109 km | 1 km |
| Apr 17, 2010 | 5 km SSE of Pozuelos, Mexico | M4.0 | 78 km | 2 km |
| Sep 23, 2013 | 2 km ENE of Chilcuautla, Mexico | M4.0 | 82 km | 5 km |
| Apr 27, 1998 | 4 km SW of San Nicolás de los Ranchos, Mexico | M4.0 | 96 km | 1 km |
| Nov 3, 2002 | 8 km SW of José María Morelos, Mexico | M4.0 | 91 km | 5 km |
| Aug 7, 2005 | 2 km W of San Isidro, Mexico | M4.0 | 14 km | 5 km |
| Sep 22, 1998 | 3 km WNW of Xalitzintla, Mexico | M4.0 | 91 km | 1 km |
| May 30, 2007 | 4 km SSW of Lomas de Tepemecatl, Mexico | M4.0 | 107 km | 15 km |
| Sep 21, 1998 | 1 km W of San Mateo Ozolco, Mexico | M4.0 | 89 km | 1 km |
| Mar 19, 2000 | 3 km E of San Antonio Virreyes, Mexico | M3.9 | 115 km | 9 km |
| May 20, 2010 | 3 km N of La Estancia, Mexico | M3.9 | 61 km | 5 km |
| Jul 4, 2005 | 1 km S of Pisaflores, Mexico | M3.9 | 149 km | 16 km |
| Feb 11, 1998 | 0 km WNW of La Magdalena Yancuitlalpan, Mexico | M3.9 | 110 km | 0 km |
| Sep 23, 1998 | 1 km NW of Xalitzintla, Mexico | M3.9 | 91 km | 3 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Hurricane History
11 hurricanes (Category 1+) recorded within 500 km since 1980. Strongest on record: Category 3.
| Year | Name | Category | Max Wind | Closest |
| 2021 | Grace | Category 3 | 121 mph | 112 km |
| 2017 | Katia | Category 2 | 104 mph | 172 km |
| 2017 | Franklin | Category 1 | 81 mph | 206 km |
| 2010 | Karl | Category 3 | 127 mph | 217 km |
| 2007 | Dean | Category 2 | 98 mph | 148 km |
| 2007 | Lorenzo | Category 1 | 81 mph | 167 km |
| 2000 | Keith | Category 1 | 92 mph | 267 km |
| 1996 | Dolly | Category 1 | 81 mph | 209 km |
| 1993 | Gert | Category 2 | 98 mph | 136 km |
| 1990 | Diana | Category 2 | 98 mph | 165 km |
| 1988 | Debby | Category 1 | 75 mph | 159 km |
Source: NOAA IBTrACS (Category 1+, 1980–2026).
Nearby Volcanoes
13 volcanoes within 200 km. Closest: Papayo (68 km).
| Name | Type | Elevation | Last Eruption | Distance |
| Papayo | Lava dome | 3,600 m (11,811 ft) | Unknown | 68 km |
| Iztaccihuatl | Stratovolcano | 5,230 m (17,159 ft) | Unknown | 81 km |
| Popocatepetl | Stratovolcano(es) | 5,393 m (17,694 ft) | 2020 | 98 km |
| Chichinautzin | Volcanic field | 3,930 m (12,894 ft) | 400 | 109 km |
| Humeros, Los | Caldera(s) | 3,150 m (10,335 ft) | -4470 | 120 km |
| Serdan-Oriental | Tuff cone(s) | 3,485 m (11,434 ft) | Unknown | 135 km |
| Gloria, La | Volcanic field | 3,500 m (11,483 ft) | Unknown | 152 km |
| Toluca, Nevado de | Stratovolcano | 4,680 m (15,354 ft) | -1350 | 153 km |
| Cofre de Perote | Shield(s) | 4,282 m (14,049 ft) | 1150 | 155 km |
| Cumbres, Las | Stratovolcano | 3,940 m (12,927 ft) | -3920 | 160 km |
| Orizaba, Pico de | Stratovolcano | 5,564 m (18,255 ft) | 1846 | 167 km |
| Zitacuaro-Valle de Bravo | Caldera | 3,500 m (11,483 ft) | -3050 | 185 km |
| Naolinco Volcanic Field | Pyroclastic cone(s) | 2,000 m (6,562 ft) | -1200 | 192 km |
Source: Smithsonian Institution Global Volcanism Program (GVP).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 50°F (10°C) | 0.4 in | Coldest |
| February | 53°F (12°C) | 0.5 in | |
| March | 57°F (14°C) | 0.7 in | |
| April | 60°F (15°C) | 1.3 in | |
| May | 61°F (16°C) | 2.4 in | Warmest |
| June | 60°F (15°C) | 3.9 in | |
| July | 56°F (13°C) | 4.2 in | Wettest |
| August | 58°F (15°C) | 3.5 in | |
| September | 58°F (15°C) | 3.7 in | |
| October | 56°F (13°C) | 2.0 in | |
| November | 54°F (12°C) | 0.6 in | |
| December | 52°F (11°C) | 0.4 in | Driest |
Santo Tomas has a seasonal temperature swing of 11°F / from 50°F in January to 61°F in May. Total annual precipitation is 23.6 inches, with July being the wettest month (4.2") and December the driest (0.4").