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Weather & Climate in San Ernesto, Mexico
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
San Ernesto enjoys a temperate climate with an average annual temperature of 63°F (17°C). Winters average 57°F in January while summers reach 65°F in July / relatively mild seasonal variation. The area gets 349 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 14.7 inches (drier than the 38-inch national average). The city sits at an elevation of 6,693 feet.
Temperature
57°F Jan (14°C)
65°F Jul (19°C)
| Annual Average | 62.8°F |
| 16% above US avg | |
| January Average | 57°F (14°C) |
| July Average | 65°F (19°C) |
| Sunny Days | 349 days/yr |
Geography
| Elevation | 6,693 ft (2,040 m) |
| Area | 998.3 sq mi (2,585.5 km²) |
| Population Density | 1/sq mi |
| Coordinates | 21.1411°N, 100.5445°W |
| Timezone | America/Mexico_City |
Precipitation & Snow
Air Quality
Earthquake History
26 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M4.3.
| Jan 15, 2007 | San Luis Potosi-Queretaro-Guanajuato border region, Mexico | M4.3 | 131 km | 14 km |
| Apr 30, 2006 | 5 km SSE of San Diego de Alcalá, Mexico | M4.2 | 132 km | 15 km |
| Jun 25, 2011 | 6 km NE of Purísima de Arista, Mexico | M4.2 | 115 km | 10 km |
| Jun 25, 2011 | 6 km N of Landa de Matamoros, Mexico | M4.1 | 128 km | 3 km |
| May 22, 2001 | 13 km WSW of Tamápatz, Mexico | M4.1 | 145 km | 17 km |
| Jan 16, 2007 | 1 km SSW of Lagunillas, Mexico | M4.1 | 112 km | 21 km |
| Mar 11, 1998 | 12 km ESE of Santa Catarina, Mexico | M4.1 | 130 km | 5 km |
| Jul 25, 2002 | 13 km SW of Agua Zarca, Mexico | M4.1 | 142 km | 5 km |
| Mar 26, 2011 | 15 km WSW of Tamápatz, Mexico | M4.0 | 143 km | 9 km |
| Oct 11, 1990 | 8 km NW of Pinal de Amoles, Mexico | M4.0 | 89 km | 10 km |
| Jun 27, 2011 | 17 km WSW of Tamápatz, Mexico | M4.0 | 142 km | 8 km |
| Jan 25, 2008 | 12 km ESE of Rayón, Mexico | M4.0 | 128 km | 5 km |
| Jun 27, 2006 | 4 km ENE of Cuerámaro, Mexico | M3.9 | 126 km | 67 km |
| Apr 8, 1998 | 9 km NNW of Jacala, Mexico | M3.7 | 135 km | 35 km |
| Mar 11, 1998 | 12 km E of Concá, Mexico | M3.7 | 112 km | 20 km |
| Jan 29, 1998 | 3 km ENE of Laguna de Vaquerías, Mexico | M3.7 | 97 km | 5 km |
| Jun 4, 2000 | 0 km ESE of Tepetongo, Mexico | M3.7 | 144 km | 3 km |
| May 26, 2000 | 17 km W of Jacala, Mexico | M3.6 | 124 km | 85 km |
| May 15, 2000 | 9 km NW of Caltimacan, Mexico | M3.5 | 130 km | 3 km |
| Mar 24, 1999 | 15 km SSW of Jacala, Mexico | M3.5 | 139 km | 8 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Hurricane History
2 hurricanes (Category 1+) recorded within 500 km since 1980. Strongest on record: Category 1.
| Year | Name | Category | Max Wind | Closest |
| 1996 | Dolly | Category 1 | 81 mph | 299 km |
| 1993 | Gert | Category 1 | 75 mph | 233 km |
Source: NOAA IBTrACS (Category 1+, 1980–2026).
Nearby Volcanoes
2 volcanoes within 200 km. Closest: Michoacan-Guanajuato (191 km).
| Name | Type | Elevation | Last Eruption | Distance |
| Michoacan-Guanajuato | Pyroclastic cone(s) | 3,860 m (12,664 ft) | 1952 | 191 km |
| Zitacuaro-Valle de Bravo | Caldera | 3,500 m (11,483 ft) | -3050 | 196 km |
Source: Smithsonian Institution Global Volcanism Program (GVP).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 57°F (14°C) | 0.6 in | |
| February | 57°F (14°C) | 0.4 in | |
| March | 62°F (17°C) | 0.3 in | Driest |
| April | 66°F (19°C) | 0.6 in | |
| May | 69°F (20°C) | 1.4 in | Warmest |
| June | 68°F (20°C) | 3.3 in | |
| July | 65°F (19°C) | 4.1 in | Wettest |
| August | 65°F (19°C) | 3.5 in | |
| September | 64°F (18°C) | 3.0 in | |
| October | 61°F (16°C) | 1.3 in | |
| November | 58°F (15°C) | 0.3 in | |
| December | 55°F (13°C) | 0.3 in | Coldest |
San Ernesto has a seasonal temperature swing of 13°F / from 55°F in December to 69°F in May. Total annual precipitation is 18.9 inches, with July being the wettest month (4.1") and March the driest (0.3").